CN109612909A - Grout transformation Rock And Soil permeance property intelligent measure experimental rig and test method - Google Patents
Grout transformation Rock And Soil permeance property intelligent measure experimental rig and test method Download PDFInfo
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- CN109612909A CN109612909A CN201910123747.9A CN201910123747A CN109612909A CN 109612909 A CN109612909 A CN 109612909A CN 201910123747 A CN201910123747 A CN 201910123747A CN 109612909 A CN109612909 A CN 109612909A
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- 239000002689 soil Substances 0.000 title claims abstract description 27
- 239000011435 rock Substances 0.000 title claims abstract description 25
- 239000011440 grout Substances 0.000 title claims abstract description 19
- 230000009466 transformation Effects 0.000 title claims abstract description 18
- 238000010998 test method Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 118
- 238000012360 testing method Methods 0.000 claims abstract description 84
- 238000007789 sealing Methods 0.000 claims abstract description 32
- 229910052751 metal Inorganic materials 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 24
- 230000003014 reinforcing effect Effects 0.000 claims description 43
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 30
- 239000004568 cement Substances 0.000 claims description 24
- 239000002002 slurry Substances 0.000 claims description 17
- 230000035699 permeability Effects 0.000 claims description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 14
- 230000008595 infiltration Effects 0.000 claims description 13
- 238000001764 infiltration Methods 0.000 claims description 13
- 238000005259 measurement Methods 0.000 claims description 12
- 238000007569 slipcasting Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 7
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- 239000000654 additive Substances 0.000 claims description 6
- 230000000996 additive effect Effects 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 claims description 2
- 238000005452 bending Methods 0.000 claims description 2
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 2
- 229940043237 diethanolamine Drugs 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229940031098 ethanolamine Drugs 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229940099259 vaseline Drugs 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of grout transformation Rock And Soil permeance property intelligent measure experimental rigs, including test cylinder, the test cylinder includes the cylinder of upper and lower opening, the cylinder is made of three identical valve connections, cylinder top and the bottom are respectively arranged with top cover and bottom cover, the opening being connected with external water feed apparatus is provided in the middle part of the top cover, bottom cover is circular ring shape, the center round mouth lower part of bottom cover is correspondingly arranged on funnel, top cover, multiple bolts hole are correspondingly arranged on the top edge of bottom cover and funnel, sealing bolt passes through aforementioned bolt hole for top cover, bottom cover, cylinder and funnel are fixed together；The outlet of the funnel connects outlet conduit, and metal pipe float flow meter is connected on outlet conduit, and outlet conduit outlet is correspondingly arranged on beaker；It is provided with pressure controller on the external water feed apparatus, pressure controller and metal pipe float flow meter pass through wireless module and be connected with control device.The present invention also discloses the test methods using the device.
Description
Technical field
The present invention relates to a kind of During Geotechnical Tests technology, especially a kind of grout transformation Rock And Soil permeance property intelligent measure examination
Experiment device and test method.
Background technique
Permeability is the important hydraulic parameter of Rock And Soil, has been largely fixed the property such as intensity, deformation of Rock And Soil
Matter, it is most important to engineering design, and influence the stability of engineering construction.When engineering construction encounters the preferable ground of permeability
Layer causes heavy personnel's property loss if construction wrong easily causes the prominent mud disaster of gushing water.
Slurry injection technique is commonly used to weaken the permeability of Rock And Soil, improves Rock And Soil intensity, to reach water blockoff, enhancing Rock And Soil
The purpose of stability.To evaluate slip casting effect, regular sample can be processed, is carried out using indoor mechanical test instrument by sampling
Mechanical test carries out strength test.And by the permeability of note medium and grouting and reinforcing body, i.e., testing permeability need to compare before slip casting
Compare slip casting front and back by the variation of note medium osmosis coefficient.
How accurately and rapidly to measure the infiltration coefficient of grouting and reinforcing body is a problem for evaluating slip casting effect, at present
There are bigger difficulty for grouting and reinforcing body testing permeability:
First is that there are irregular annular space between reinforcing body sample and test apparatus, water and other streams during test
Body will generate advantage seepage flow in annular space, cause test result bigger than normal, and there are biggish errors；
Second is that weak cementing rock mass grouting and reinforcing body have low-intensity (read up the literature and learn, part reinforcing body uniaxial compressive strength
Less than 1.0MPa) and the characteristics of low-permeability, if increasing the modes such as rubber case by outside fastens sample, it be easy to cause sample broken
It is bad, lead to test failure；
Third is that the test period is long, and efficiency is lower when conventional soil mechanics test method, constant head or varying head are tested, consumption
Take manpower.
Urgently study a kind of intelligent experimental rig and test method for the measurement minimum grouting and reinforcing body of infiltration coefficient.
109060631 A of Chinese patent application CN discloses measuring system and the measurement side of a kind of varying head infiltration coefficient
Method, the system include liquid-storage system, pilot system, control system and data processing system, pass through the cooperation reality of this four systems
Existing automatic measurement infiltration coefficient simultaneously greatly shortens the test period.And during gas permeability measurement, on the outside of sample with
Seepage channel strong influence between the test cylinder accuracy of result, the patent take vaseline to seal this channel, seal
Effect shortcoming.
105866337 A of Chinese patent application CN discloses slurry shield excavation face mud film forming and mud under a kind of high pressure
Film test device for air tightness and method, device include pneumatic supply, the slurry penetration room, backpressure device and the collection that are placed in insulating box
Water installations；Slurry penetration room is steel die type tube structure.The main purpose of this patent is to develop a kind of grouting test device, simulation
Diffusion forms mud membrane process to mud in the earth formation, then passes through the airtightness and resistance to pressure energy of charged pressure gas detection mud film
Power cannot carry out testing permeability to the conventional reinforcing body sample that grouting test obtains, evaluate grouting consolidation effect.
101893617 B of Chinese patent CN discloses a kind of test limit row tunnel grouting circle hydraulic pressure reduction rule resistant to pressure
Experimental rig, including pressure chamber, simulation tunnel, pressurized equipment and measurement equipment are mainly used for Grouting Circle hydraulic pressure reduction rule
Test, wherein Grouting Circle is substituted using the uniform analog material of human configuration, it is difficult to be reflected under the conditions of true slip casting and be reinforced
Body state is only capable of block-water performance variation caused by reflection Grouting Circle thickness changes.
Summary of the invention
The purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of grout transformation Rock And Soil permeance property
Intelligent measure experimental rig and test method, the device is simple and easy to operate, occupies little space, and test method is clear, test result
Accurately, the infiltration coefficient of weak cement rock Stabilizing Grout body can be accurately measured by this experimental rig.
To achieve the above object, the present invention adopts the following technical solutions:
A kind of grout transformation Rock And Soil permeance property intelligent measure experimental rig, including test cylinder, the test cylinder include
The cylinder of upper and lower opening, the cylinder are made of three identical valve connections, and cylinder top and the bottom are respectively arranged with top lid and bottom
Lid, is provided with the opening being connected with outside water feed apparatus in the middle part of the top cover, and bottom cover is circular ring shape, under the center round mouth of bottom cover
Portion is correspondingly arranged on funnel, multiple bolts hole is correspondingly arranged on the top edge of top cover, bottom cover and funnel, before sealing bolt passes through
Bolt hole is stated to be fixed together top cover, bottom cover, cylinder and funnel；
The outlet of the funnel connects outlet conduit, is connected with metal pipe float flow meter, outlet conduit on outlet conduit
Outlet is correspondingly arranged on beaker；
It is provided with pressure controller on the external water feed apparatus, pressure controller and metal pipe float flow meter pass through
Wireless module is connected with control device.
The test cylinder top cover intermediate thin, periphery is thick, close at being provided with one at reversing concave, with cylinder upper-end contact
Seal ring guarantees leakproofness.
The cap edge is symmetrical arranged there are two downward bending fixed ear, set at the top of cylinder there are two with fixed ear phase
The corresponding ear slot fallen in inner barrel, fixed ear and ear slot cooperation facilitate top cover and cylinder to positive installation, play positioning and
Position-limiting action.
The opening of the top cover is circular hole, is provided with hollow screw in circular hole.
The external water feed apparatus includes water feeding tank, there is water in water feeding tank, water feeding tank be equipped with its it is internal be connected into
Port and water outlet, water outlet are connected by the hollow screw of upper hose and top cover, realize the connection of water feeding tank and test cylinder, on
Second pressure controller is provided on water pipe；Air inlet is connected to by air-pressure duct with nitrogen cylinder, provides water feeding tank by nitrogen cylinder
Upper water pressure, be connected with first pressure controller on air-pressure duct.
Described upper hose one end extend into bottom in water feeding tank.
The test cylinder is set on truncated cone-shaped bracket, and truncated cone-shaped bracket is welded by stainless steel.
The control device is computer.
The test cylinder and funnel are made of organic glass.
The test cylinder top cover is made of transparent plastic.
A kind of test method using grout transformation Rock And Soil permeance property intelligent measure experimental rig, including following step
It is rapid:
Step 1) processes grouting and reinforcing body: if according to test specimen made of soil test standard: diameter 48-52mm is high
Degree is 98-100mm, then does not need to process；If the aliquot taken out from other grouting test reinforcing bodies then needs to be processed into
Above-mentioned standard；
Step 2) experimental rig tentatively assembles: first connecting bottom cover with funnel, four sealing screw rods are passed through bolt hole, are put
It sets on truncated cone-shaped bracket, three valve test cylinders is sealed and are installed；Metal pipe float flow meter, outlet pipe are installed on outlet conduit
Road connects funnel bottom；Nitrogen cylinder is connected with air-pressure duct, in first pressure controller indirectly, then air-pressure duct and water feeding tank
On air inlet be connected, water feeding tank water outlet connects upper hose, and second pressure controller is connected on upper hose, and upper hose reconnects
The opening of top cap central, so far, experimental rig is tentatively completed；
Step 3) places sample and injects complex cement slurries: the reinforcing body sample processed being placed on bottom cover, artificially
Fixed reinforcing body sample；So far, test cylinder and reinforcing body test specimen form annular space, inject in this annular space impervious
Height, the short complex cement slurries of gel time guarantee the slurries gel barrier layer good at impermeability in a short time；Complex cement
Include water, ordinary cement and additive in slurries, three's mass ratio is 0.6:1:0.005, and additive is that mass ratio is 0.05:
Triethanolamine, diethanol amine and the sodium chloride of 0.05:1；
Step 4) sealing device: it stands, top cover before complex cement slurries do not solidify will be close on funnel, top cover
Envelope nut is tightened, and sealed environment is formed；So far, experimental rig all assembles and sealing finishes；
Step 5) carries out gas permeability measurement test: topped up with water in water feeding tank passes through control device control after cement final set
First pressure controller processed makes nitrogen cylinder provide pressure, and the water of water feeding tank enters test cylinder by upper hose, passes through second pressure
Controller clearly upper water pressure on control device；It needs to exclude the air in reinforcing body completely before the formal beginning of test: first
Water flowing under a certain pressure is completed to stability of flow final vacuum process；It is flowed out from funnel when water flow passes through reinforcing body sample,
Metal pipe float flow meter measures the accumulated water volume in time period, and is wirelessly sent to control device, and the water of outflow is finally arranged
Enter in beaker；After exhaust, the uninterrupted measured by metal pipe float flow meter is tracked using control device；One section of record
The accumulative reading of flowmeter in time；It is then shut off first pressure controller and stops water filling, be then turned off second pressure controller；
Step 6) achievement calculates: upper water pressure P0It is measured by second pressure controller, water injection time t is (after waterflow stabilization
1min), accumulated water volume w is measured by metal pipe float flow meter, specimen finish D and specimen height L are measured by vernier caliper, can be counted
Calculate specimen cross section product A；The relationship of water velocity v and hydraulic gradient i is v=ki in Darcy's law, therefore infiltration coefficient
Because
And because
It can be derived from
In formula, h indicates that the water-column that water pressure is converted into, calculating formula take g=10m/s2, the density of water takes 1000kg/
m3, then have formula h=100P0；
Then control device calculation permeability coefficient k is directly utilized；
Step 7) reinforcing body-complex cement mixture demoulding: after the test, the nut of sealing screw rod or more, sled are unscrewed
Lower top cover, bottom cover；Three valve screws are unscrewed, three valves are pried open, grouting and reinforcing body-complex cement mixture demoulding is completed.
Step 8) Analysis on Results: by the variation of note medium osmosis coefficient before and after comparison slip casting, slip casting effect is evaluated.
The beneficial effects of the present invention are:
1, the present invention can accurately measure reinforcing body infiltration coefficient, be suitable for extreme environment, carry out indoor and outdoor test work
Make.
2, the reinforcing body infiltration coefficient intelligence experimental rig that the present invention designs is using high-strength bolt, multi-sealed mode, dress
Set good airproof performance, high reliablity.And test cylinder uses three valves, is convenient in demoulding and keeps experiment equipment service life more long
Long, cyclic utilization rate greatly improves.
3, present invention design reduces manpower and material resources by computer long-distance control, improves data accuracy, greatlys improve number
According to the speed of processing.
4, short using gel time, impervious high to answer present invention eliminates various drawbacks of original gas permeability measurement
Cement carries out peripheral seal, prevents water flow from flowing out along reinforcing body periphery gap, realizes more comprehensively reinforcing body infiltration system
Number measurement work, the research for grouting and reinforcing theory provide powerful support.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is capping top view of the present invention；
Fig. 3 is top cover side view of the present invention；
Fig. 4 is bottom cover top view of the present invention；
Fig. 5 is three valve test cylinder schematic diagrames of the invention；
Fig. 6 is funnel schematic diagram of the present invention；
Fig. 7 is water feeding tank schematic diagram of the present invention；
Fig. 8 is infiltration coefficient intelligent measure test method schematic diagram of the present invention；
Wherein, 1-1: top cover, 1-2: water injection hole, 1-3: water injection hole fastening nut, the 1-4: the first control position hole, 1-5: control position hole
Fastening nut, 1-6: ring type seal, 1-7: fixed ear, 2-1: three valve test cylinders, 2-2: three valve orifice extensions, 2-
3 three valve fastening nuts, 2-4: sealing screw rod；2-5: ear slot；3-1 bottom cover, the 3-2: the second control position hole, 4-1: funnel, 4-2: the
Three control position holes, 4-3: funnel circular extent, 5-1: truncated cone-shaped bracket, 6-1: upper hose, 6-2-1: first pressure controller, 6-
2-2: second pressure controller, 6-3: water feeding tank, 6-3-1: apopore, 6-3-2: air inlet, 6-4: pneumatic tube, 6-5: nitrogen
Bottle, 6-6: outlet pipe, 6-7: metal pipe float flow meter, 6-8: beaker, 7-1: computer, 8-1: grouting and reinforcing body sample, 9-
1: complex cement slurries；
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
This specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to cooperate specification revealed interior
Hold, so that those skilled in the art understands and reads, is not intended to limit the invention enforceable qualifications, therefore does not have skill
Essential meaning in art, the modification of any structure, the change of proportionate relationship or the adjustment of size can be produced not influencing the present invention
Under raw effect and the purpose that can reach, should all still it fall in the range of disclosed technology contents obtain and can cover.
Meanwhile cited such as "upper" in this specification, "lower", "left", "right", " centre " and " one " term, be merely convenient to
Narration is illustrated, rather than to limit the scope of the invention, relativeness is altered or modified, without substantive change
Under technology contents, when being also considered as the enforceable scope of the present invention.
As shown in figs. 1-7, grout transformation Rock And Soil permeance property intelligent measure experimental rig includes test generating device, examination
Test transacter, experimental data processing device.Testing generating device includes nitrogen cylinder 6-5, pressure controller, water feeding tank 6-
3, test cylinder 2-1, top cover 1-1, four sealing screw rod 2-4 and corresponding matched eight fastening nuts, funnel 4-1, round table-like branch
Frame 5-1, all kinds of connecting tubes.Nitrogen cylinder 6-5 is connected into first pressure controller 6-2-1 using pipeline, reconnects water feeding tank 6-3,
Second pressure controller 6-2-2, last joint test cylinder top cover 1-1 are connected using pipeline, seals screw rod 2-4 for test cylinder 2-1
It is closely connect with top cover 1-1.
Test data collection device is made of outlet pipe 6-6, metal pipe float flow meter 6-7, beaker 6-8.Test cylinder 2-1
It is connected to metal pipe float flow meter 6-7 on bottom funnel 4-1 connection outlet pipe 6-6, outlet pipe 6-6, the water of outflow is discharged into beaker
6-8.Metal pipe float flow meter 6-7 is the instrument that accurate can measure unit time water flow, passes through RS485 wireless module and meter
Calculation machine 7-1 is remotely connected, and is controlled by computer remote terminal.Beaker 6-8 is made of GG-17 high-boron-silicon glass.
Data processing equipment is computer 7-1, can remotely control pressure controller and metal pipe float flow meter 6-
7, and finally acquire the infiltration coefficient of sample.
As shown in Figure 1 and Figure 2, top cover 1-1 is processed into Φ 200 (i.e. diameter 200mm) disk by transparent plastic, and the center point is bored
If Φ 10mm circle water injection hole 1-2, fixed water injection hole fastening nut 1-3 connects Φ 25mm upper hose 6-1；Top cover 1-1 is in Φ
It is drilled with 4 equally distributed Φ 20mm first in 90 ° of interval on 170mm circumference and controls position hole 1-4, passes through sealing screw rod 2-4, the bottom of with
Four openings of lid are conllinear, and for being connected across sealing screw rod with test cylinder bottom, screw rod is furnished with fastening nut on the outside of top cover,
For fit sealing screw rod.Top cover 1-1 symmetrically locates there are two 30*20*30mm (i.e. long 30mm, wide 20mm, high 30mm) fixed ear
1-7。
As shown in Figure 1, Figure 3, top cover 1-1 Φ 100mm circumference have Φ 100*80*15mm (i.e. outside diameter 100mm, it is interior
Circular diameter 80mm, high 15mm) ring type seal 1-6, ring type seal is processed by transparent plastic.Top cover 1-1 Φ 200mm to Φ
It is processed at 160mm with a thickness of 10mm, is processed into Φ 160mm to the center point with a thickness of 5mm.The intermediate thin of top cover 1-1, edge
Thickness, at undercut shape, inside adds a ring type seal 1-6 again, guarantees leakproofness, middle part is connected with reinforcing body test specimen, can store
Water, guarantee discharge section area are reinforcing body test specimen area of section.
As Figure 1 and Figure 4, bottom cover 3-1 by organic glass is processed into Φ 250*100*10mm (i.e. outside diameter is
250mm, interior circular diameter 100mm, high 10mm) annulus, 4 intervals, 90 ° of equally distributed Φ 20mm the are drilled on 170mm circumference
Two control position hole 3-2, pass through sealing screw rod 2-4, conllinear with four openings of top cover, for across sealing screw rod and test cylinder bottom
Portion is connected, and screw rod is furnished with sealing nut on the outside of top cover, is used for fit sealing screw rod.Bottom cover lower part connects funnel.
As shown in Figure 1, shown in Figure 5, three valve test cylinder 2-1 are made of organic glass, and three valves respectively account for 120 °, constitute Φ
The test cylinder 2-1 of 190*180*250mm (i.e. outside diameter 190mm, interior circular diameter 180mm, high 250mm), each three valves shape
At two 20*5*250mm (i.e. long 20mm, wide 5mm, high 250mm), three valve orifice extension 2-2.Away from top 75mm, 130mm
Place is respectively drilled with Φ 20mm fixation hole, passes through three valve fastening nut 2-3, detachably, top, bottom-open pass through top cover, bottom
Lid, sealing screw rod are attached, seal.30*20*30mm (i.e. long 30mm, wide 20mm, high 30mm) is provided at the top of test cylinder 2-1
Ear slot 2-5 is fixed for fixed ear 1-7.
As shown in Fig. 1, Fig. 6, funnel 4-1 is made of organic glass, and it is (i.e. outer that top extends outward into Φ 250*150*10mm
Circular diameter is 250mm, interior circular diameter 100mm, high 5mm) circular extent 4-3,4 intervals are drilled on Φ 170mm circumference
The 90 ° of equally distributed third control position Φ 20mm hole 4-2, it is conllinear with bottom cover four openings, for across sealing screw rod, screw rod to prolong
Extending portion bottom side is furnished with sealing nut, is used for fit sealing screw rod, passes through sealing screw rod 2-4.The high 145mm of lower taper, bottom
There are 20mm openings, process long 30mm interface.
As shown in Figure 1, Figure 7 shows, water feeding tank 6-3 is processed into 140*50*50mm (i.e. long 140mm, wide 50mm, height by stainless steel
50mm) cuboid.It is stamped the apopore 6-3-1 of Φ 20mm on water feeding tank 6-3, connects the hollow screw of Φ 23mm, reconnects
Φ 25mm upper hose；It is separately provided with the Φ 15mm air inlet 6-3-2 apart from apopore 20mm, connects the hollow screw of 18mm, then connect
Connect 20mm pneumatic tube.Have a large amount of water in water feeding tank 6-3, top cover is opened there are two circular port, be respectively intended to connection water supply pipeline and
Air-pressure duct, upper hose protrude into water feeding tank bottom, and pneumatic tube connects nitrogen cylinder, provides water pressure.
As shown in Figure 1, sealing screw rod 2-4 is Φ 16mm high-strength bolt.Funnel 4-1 bottom end opening connects 25 outlet pipe 6- of Φ
Metal pipe float flow meter 6-7 is connected among 6, outlet pipe 6-6, the water of outflow is discharged into beaker 6-8.
As shown in Figure 1, truncated cone-shaped bracket 5-1 is made of stainless steel welded, for fixed support test cylinder 2-1, top is
Φ 250*10 annulus, lower part are Φ 300*10 annulus, and upper and lower annulus is welded using the high-strength alloy of long 100mm.
As shown in Figure 1, being connected to first pressure controller 6-2-1 among water inlet pipe 6-1, hydraulic pressure force value can be artificially provided,
Hydraulic pressure force value can also be read, for calculating water velocity, then connects water feeding tank 6-3.The second pressure is connected among pneumatic tube 6-4
Force controller 6-2-2 then connects nitrogen cylinder 6-5, provides suitable and controllable air pressure.
As shown in Figure 1, first pressure controller 6-2-1, second pressure controller 6-2-2 and metal pipe float flow meter
6-7 is wirelessly connected by RS485 module and computer 7-1, is controlled by computer remote terminal.
As Figure 1-Figure 8, grouting and reinforcing body gas permeability measurement is carried out using gas permeability measurement intelligence experimental rig
Test method are as follows:
If step 1) is according to test specimen made of soil test standard: diameter 48-52mm is highly 98-100mm, then
It does not need to process；If the aliquot taken out from other grouting test reinforcing bodies then needs to be processed into above-mentioned standard；
Bottom cover 3-1 is first connect by step 2) with funnel 4-1, and four sealing screw rod 2-4 are passed through the control of the 3rd 4-2 and second position
Hole 3-2 is placed on truncated cone-shaped bracket 5-1, and three valve test cylinder 2-1 are sealed using three valve fastening nut 2-3.Separately
Metal pipe float flow meter 6-7 is connected with outlet pipe 6-6, the bottom outlet conduit 6-6 connection funnel 4-1.Nitrogen cylinder 6-5 and air pressure
Pipe 6-4 is connected, and centre is connected to first pressure controller 6-2-2, then pneumatic tube 6-4 and water feeding tank 6-3 air inlet 6-3-2 phase
Even, water feeding tank 6-3 water outlet 6-3-1 connection upper hose 6-1, is connected to second pressure controller 6-2-1, and upper hose 6-1 is reconnected
The inlet opening 1-2 at the center top cover 1-1, so far, experimental rig is tentatively completed；
The reinforcing body sample 8-1 processed is placed on bottom cover by step 3), artificial fixed reinforcing body sample.So far, it tries
It tests cylinder and reinforcing body test specimen forms annular space, complex cement slurries 9-1, including water, light water are injected in this annular space
Mud and additive, three's mass ratio be 0.6:1:0.005, additive be mass ratio be 0.05:0.05:1 triethanolamine, two
Ethanol amine and sodium chloride；
Step 4) is stood, and top cover 1-1 before complex cement slurries 9-1 does not solidify will be on funnel 4-1, top cover 1-1
Sealing nut 4-2 and 1-5 are tightened, and form sealed environment.So far, experimental rig all assembles and sealing finishes；
Topped up with water in step 5) water feeding tank 6-3 remotely controls first pressure by computer 7-1 after cement 9-1 final set
Controller 6-2-1 makes nitrogen cylinder 6-5 provide pressure, and the water of water feeding tank 6-3 enters test cylinder 2-1 by upper hose 6-1, by the
Two pressure controller 6-2-2 can clearly go up water pressure on computer 7-1.It needs to exclude reinforcing body completely before the formal beginning of test
In air: water flowing under a certain pressure first, to stability of flow final vacuum process complete.When water flow passes through reinforcing body sample
8-1 is flowed out from funnel 4-1, and metal pipe float flow meter 6-7 can measure the accumulated water volume in time period, and wirelessly be sent to
Computer 7-1 terminal, the water of outflow are ultimately discharged into beaker 6-8.After exhaust, tracked using computer 7-1 by metal tube
The uninterrupted of suspended body flowmeter 6-7 measurement.Record the accumulative reading of flowmeter 6-7 in a period of time.It is then shut off second pressure
Controller 6-2-2 stops water filling, is then turned off first pressure controller 6-2-1；
Step 6) achievement calculates: upper water pressure P0It is measured by second pressure controller 6-2-2, water injection time t is by artificially advising
Determine 1min, accumulated water volume w is measured by metal pipe float flow meter 6-7, specimen finish D and specimen height L are measured by vernier caliper,
Specimen cross section product A can be calculated；The relationship of water velocity v and hydraulic gradient i is v=ki in Darcy's law, therefore infiltration coefficient
Because
And because
It can be derived from
H indicates that the water-column that water pressure is converted into, calculating formula take g=10m/s2, the density of water takes 1000kg/m3, then have
Formula h=100P0；
When learning above-mentioned parameter, computer calculation permeability coefficient can be directly utilized；
Step 7) reinforcing body-complex cement mixture demoulding: after the test, the fastening of sealing screw rod 2-4 or more is unscrewed
Nut 1-5 prizes lower top cover 1-1, bottom cover 3-1；Three valve screw 2-3 are unscrewed, three valves are pried open.Grouting and reinforcing body-complex cement
Mixture demoulding is completed；
Step 8) Analysis on Results: by the variation of note medium osmosis coefficient before and after comparison slip casting, slip casting effect is evaluated.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (10)
1. a kind of grout transformation Rock And Soil permeance property intelligent measure experimental rig, characterized in that including test cylinder, the test
Cylinder includes the cylinder of upper and lower opening, and the cylinder is made of three identical valve connections, and cylinder top and the bottom are respectively arranged with top
Lid and bottom lid, the top cover middle part are provided with the opening being connected with external water feed apparatus, and bottom cover is circular ring shape, the center of bottom cover
Round mouth lower part is correspondingly arranged on funnel, and multiple bolts hole, sealing bolt are correspondingly arranged on the top edge of top cover, bottom cover and funnel
Top cover, bottom cover, cylinder and funnel are fixed together across aforementioned bolt hole；
The outlet of the funnel connects outlet conduit, and metal pipe float flow meter, outlet conduit outlet are connected on outlet conduit
It is correspondingly arranged on beaker；
It is provided with pressure controller on the external water feed apparatus, pressure controller and metal pipe float flow meter pass through wirelessly
Module is connected with control device.
2. grout transformation Rock And Soil permeance property intelligent measure experimental rig as described in claim 1, characterized in that the examination
A top cover intermediate thin is tested, periphery is thick, at a sealing ring is provided at undercut shape, with cylinder upper-end contact, guarantees leakproofness.
3. grout transformation Rock And Soil permeance property intelligent measure experimental rig as described in claim 1, characterized in that the top
Lid edge is symmetrical arranged there are two downward bending fixed ear, sets that there are two corresponding with fixed ear to inner barrel at the top of cylinder
The ear slot fallen in, fixed ear and ear slot cooperation, facilitate top cover and cylinder to positive installation, play positioning and position-limiting action.
4. grout transformation Rock And Soil permeance property intelligent measure experimental rig as described in claim 1, characterized in that the top
The opening of lid is circular hole, is provided with hollow screw in circular hole.
5. grout transformation Rock And Soil permeance property intelligent measure experimental rig as claimed in claim 4, characterized in that described outer
Portion's water feed apparatus includes water feeding tank, there is water in water feeding tank, and water feeding tank is equipped with the air inlet and water outlet being connected to its inside, out
The mouth of a river is connected by the hollow screw of upper hose and top cover, realizes the connection of water feeding tank and test cylinder, and the is provided on upper hose
Two pressure controllers；Air inlet is connected to by air-pressure duct with nitrogen cylinder, provides the upper water pressure of water feeding tank, air pressure by nitrogen cylinder
First pressure controller is connected on pipeline.
6. grout transformation Rock And Soil permeance property intelligent measure experimental rig as claimed in claim 5, characterized in that on described
Water pipe one end extend into bottom in water feeding tank.
7. grout transformation Rock And Soil permeance property intelligent measure experimental rig as described in claim 1, characterized in that the examination
It tests cylinder to be set on truncated cone-shaped bracket, truncated cone-shaped bracket is welded by stainless steel.
8. grout transformation Rock And Soil permeance property intelligent measure experimental rig as described in claim 1, characterized in that the control
Device processed is computer.
9. grout transformation Rock And Soil permeance property intelligent measure experimental rig as described in claim 1, characterized in that the examination
It tests cylinder and funnel is made of organic glass, the test cylinder top cover is made of transparent plastic.
10. a kind of test method using grout transformation Rock And Soil permeance property intelligent measure experimental rig, characterized in that including
Following steps:
Step 1) processes grouting and reinforcing body: if according to test specimen made of soil test standard: diameter 48-52mm is highly
98-100mm does not need then to process；If the aliquot taken out from other grouting test reinforcing bodies then needs to be processed into above-mentioned
Standard；
Step 2) experimental rig tentatively assembles: first connecting bottom cover with funnel, four sealing screw rods are passed through bolt hole, are placed on
On truncated cone-shaped bracket, three valve test cylinders are sealed and are installed；Metal pipe float flow meter is installed, outlet conduit connects on outlet conduit
Connect funnel bottom；Nitrogen cylinder is connected with air-pressure duct, in first pressure controller indirectly, then on air-pressure duct and water feeding tank
Air inlet is connected, and water feeding tank water outlet connects upper hose, and second pressure controller is connected on upper hose, and upper hose reconnects top cover
The opening at center, so far, experimental rig is tentatively completed；
Step 3) places sample and injects complex cement slurries: the reinforcing body sample processed is placed on bottom cover, it is artificial fixed
Reinforcing body sample；So far, test cylinder and reinforcing body test specimen form annular space, and impervious height is injected in this annular space, is coagulated
Glue time short complex cement slurries, guarantee slurries in a short time gel at impervious good barrier layer；Complex cement slurries
In include water, ordinary cement and additive, three's mass ratio be 0.6:1:0.005, additive is that mass ratio is 0.05:
Triethanolamine, diethanol amine and the sodium chloride of 0.05:1；
Step 4) sealing device: it stands, top cover before complex cement slurries do not solidify, by the sealing spiral shell on funnel, top cover
Mother tightens, and forms sealed environment；So far, experimental rig all assembles and sealing finishes；
Step 5) carries out gas permeability measurement test: topped up with water in water feeding tank, after cement final set, passes through control device control the
One pressure controller makes nitrogen cylinder provide pressure, and the water of water feeding tank enters test cylinder by upper hose, controlled by second pressure
Device clearly upper water pressure on control device；It needs to exclude the air in reinforcing body completely before the formal beginning of test: first one
Water flowing under constant-pressure is completed to stability of flow final vacuum process；It is flowed out from funnel when water flow passes through reinforcing body sample, metal
Pipe suspended body flowmeter measures the accumulated water volume in time period, and is wirelessly sent to control device, and the water of outflow is ultimately discharged into burning
In cup；After exhaust, the uninterrupted measured by metal pipe float flow meter is tracked using control device；Record a period of time
The accumulative reading of interior flowmeter；It is then shut off first pressure controller and stops water filling, be then turned off second pressure controller；
Step 6) achievement calculates: upper water pressure P0It is measured by second pressure controller, water injection time t, accumulated water volume w are by metal tube
Suspended body flowmeter measures, specimen finish D and specimen height L are measured by vernier caliper, can calculate specimen cross section product A；Darcy is fixed
The relationship of water velocity v and hydraulic gradient i is v=ki in rule, therefore infiltration coefficient
Because
And because
It can be derived from
In formula, h indicates that the water-column that water pressure is converted into, calculating formula take g=10m/s2, the density of water takes 1000kg/m3, then
There is formula h=100P0；
Then control device calculation permeability coefficient is directly utilized；
Step 7) reinforcing body-complex cement mixture demoulding: after the test, unscrewing the nut of sealing screw rod or more, prizes lower top
Lid, bottom cover；Three valve screws are unscrewed, three valves are pried open, grouting and reinforcing body-complex cement mixture demoulding is completed；
Step 8) Analysis on Results: by the variation of note medium osmosis coefficient before and after comparison slip casting, slip casting effect is evaluated.
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