CN108562648A - Device and method for judging fragmented rock body integrity degree - Google Patents
Device and method for judging fragmented rock body integrity degree Download PDFInfo
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- CN108562648A CN108562648A CN201810509084.XA CN201810509084A CN108562648A CN 108562648 A CN108562648 A CN 108562648A CN 201810509084 A CN201810509084 A CN 201810509084A CN 108562648 A CN108562648 A CN 108562648A
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- 239000011435 rock Substances 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000012360 testing method Methods 0.000 claims abstract description 57
- 239000000463 material Substances 0.000 claims abstract description 5
- 230000005284 excitation Effects 0.000 claims description 6
- 230000002463 transducing effect Effects 0.000 claims 1
- 238000011160 research Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004088 simulation Methods 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009471 action Effects 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
- 235000014121 butter Nutrition 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/07—Analysing solids by measuring propagation velocity or propagation time of acoustic waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/01—Indexing codes associated with the measuring variable
- G01N2291/011—Velocity or travel time
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Abstract
The invention discloses the device and methods for judging fragmented rock body integrity degree, it solves fragmented rock body in the prior art and can not sample, the problem that can not be determined by the fragmented rock body models integrity of equivalent material simulating, with a kind of integrated degree sorting technique of proposition, the advantageous effect of reference frame is provided for the indoor model mechanical test research of fragmented rock body, scheme is as follows：Device for judging fragmented rock body integrity degree includes the test platform for placing fragmented rock body；Angle-style baffle is vertically arranged relative to test platform to be limited to fragmented rock body；Supporting rack is arranged across test platform, and supporting rack is connect with vertical press member to apply normal pressure to fragmented rock body, and supporting rack is connect with the first lateral press member；Side frame, side frame are connect with the second lateral press member, and the first lateral press member is with the second lateral press member to apply confining pressure to fragmented rock body；Wave velocity testing instrument is set to test platform side.
Description
Technical field
The present invention relates to fragmented rock body fields, more particularly to the device and method for judging fragmented rock body integrity degree.
Background technology
Fragmented rock body is made of many joints, crack and structural plane, and continuity is very poor, internal structure easily disturbed and
It destroys, physico-mechanical properties are extremely complex.Become to the live Integrity Assessment technology of fragmented rock body in Practical Project
Maturation has complete understanding to its true physical state, but very tired in view of the acquisition of natural fragmented rock body sample
Difficulty, fragmented rock body can not sample, and cause further carry out it deep mechanical property research.
Therefore, it is necessary to for judging that the device of fragmented rock body integrity degree carries out research and design.
Invention content
For overcome the deficiencies in the prior art, the present invention provides the devices for judging fragmented rock body integrity degree, use
Normal concrete pour into a mould module, module is accumulated to form broken basement rock physical model realize to be crushed basement rock equivalent simulation,
The device can be realized to the fragmented rock body vertically load with horizontal direction power, convenient to rock mass data by wave velocity testing instrument
It obtains, to classify to fragmented rock body integrated degree, quickly and effectively.
Concrete scheme for judging the device of fragmented rock body integrity degree is as follows：
Device for judging fragmented rock body integrity degree, including：
Test platform for placing physical model；
Angle-style baffle is vertically arranged relative to test platform to be limited to physical model；
Supporting rack is arranged across test platform, and supporting rack is connect with vertical press member to apply normal direction to physical model
Pressure, supporting rack are connect with the first lateral press member；
Side frame, side frame connects with the second lateral press member, the first lateral press member and the second transverse direction press member with
Apply confining pressure to physical model；It is for the gap between compacted module to apply confining pressure and normal pressure, and preferably simulation is broken
ROCK MASS JOINT feature；
Wave velocity testing instrument is set to test platform side.
In above-mentioned apparatus, physical model is formed using concreting, first, normal concrete under natural conditions
Basement rock has mechanical property similitude, pertinent literature research highly developed；Secondly, inside broken basement rock under natural conditions
There are many joint fissures, this feature is by between module and module in the basement rock physical model of modularization concrete
Contact trace realize that modules are poured by concrete in mold in physical model, and physical model passes through each
Module is assembled.
Basement rock physical model is fixed with test platform in device, plays position-limiting action；Apply the confining pressure of setting to physical model
And Normal stress, it is to make module be contacted in-between closely with module, final purpose is to simulate joint under natural conditions
The broken basement rock that crack is well combined.
Further, the vertical press member is connected with vertical bearing plate to contact setting with physical model, is existed in this way
When needing to apply longitudinal pressure to physical model, vertical bearing plate is passed downwardly through to be applied to physical model by vertical press member
Pressure, ensures the harmony of pressure.
Further, the described first lateral press member connects with a vertical bearing plate respectively with the second lateral press member
It connects, the two vertical rectangular structure settings of bearing plate, such two pieces vertical bearing plates are centered around physical model with angle-style baffle fit
Surrounding, vertical bearing plate setting effect be to make physical model surface uniform force.
Further, support frame as described above is door type structure, and the structure is across set on the middle part of test platform, supporting rack bottom
Portion is fixed with test platform.
Further, the fixation to wave velocity testing instrument for convenience, the angle-style baffle plate setting trepanning.
Further, the angle-style baffle is welded to connect with the test platform, and angular baffle is equivalent to horizontal direction
Reaction plate, it is therefore desirable to weld angle-style baffle and test platform.
Further, the vertical press member is jack；
Alternatively, the described first lateral press member, the second lateral press member are respectively jack.
Further, the wave velocity testing instrument includes piezoelectric-type ultrasonic wave-exciting device, receives energy converter and full-wave train sound wave
Logging instrument, ultrasonic excitation device are respectively arranged on the opposition both sides of fragmented rock body with energy converter is received, and receive energy converter and full-wave train
Acoustic logging instrument connects, wherein ultrasonic excitation device is set in trepanning.
For overcome the deficiencies in the prior art, alternative plan provided by the invention is：
Fragmented rock body model integrated degree sorting technique based on modularization concrete, including it is described for judging brokenly
The device of detritus body integrity degree.
Fragmented rock body model integrated degree sorting technique based on modularization concrete, is as follows：
1) it carries out cube using concrete material and mold and tri-prismoid module pours, after conserving setting time, heap
Product, which is formed, is crushed basement rock physical model, then by the longitudinal elastic wave speed of wave velocity testing platform test physical model, and records
Data νpm；
2) concrete material and cylinder mold is utilized to pour into a mould sillar model, by opening wave velocity testing instrument, to sillar mould
Type carries out longitudinal elastic wave velocity test, and records data νpr；
3) ν obtained according to step 1)pmThe ν obtained with step 2)prData, by the complete of formula (1) computational physics model
Whole property coefficient Kv；
Kv=(υpm/υpr)2 (1)
4) physical model is extended into unit volume model, the joint group number and item number of statistical unit strata model, by public affairs
The volume joint number J of formula (2) computational physics modelv：
Jv=S1+S2+······+Sn (2)
In formula：SnFor the item number on the every meter long survey line in n-th group joint；
5) according to integrity factor KvWith volume joint number JvValue, divides the integrated degree of physical model.
In the above-mentioned methods, fragmented rock body physical model carries out equivalent simulation using modularization concrete, by mixed
Each physical model, is finally piled into the fragmented rock body model of setting scale by the cast and maintenance for coagulating soil.
Specifically, integrated degree is determined according to such as following table content in step 5)：
Rock Mass Integrality divides the table of comparisons
Compared with prior art, the beneficial effects of the invention are as follows：
1) present invention can effectively carry out physical model by the setting of structure, simulation of the physical model to fragmented rock body
Clamping, then the measurement by wave velocity testing instrument to velocity of wave, you can determine rock mass completeness.
2) test method of the present invention provides, and can get integrated degree sorting technique, is the indoor model power of fragmented rock body
It learns experimental study and reference frame is provided.
3) existing boring coring technology can not obtain original state and be crushed basement rock sample, be taken using chisel is excavated, in broken basement rock
When buried depth is very big, cost price is high, and therefore, the present invention carries out modular simulation；The integrity degree of true basement rock is commented in engineering
Valence carries out wave velocity testing and core Joint Statistics generally by pouring water into borehole, obtains integrity degree index and divided, and this
Invention is obtained by indoor wave velocity testing platform test, advantage be more succinctly, accurately and rapidly obtain division result, cost
It spends lower.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, the application's
Illustrative embodiments and their description do not constitute the improper restriction to the application for explaining the application.
Fig. 1 (a) (vertical bearing plate) is device lateral sectional view of the present invention for judging fragmented rock body integrity degree.
Fig. 1 (b) is device longitudinal sectional drawing of the present invention for judging fragmented rock body integrity degree.
Fig. 1 (c) is the wave velocity testing structure top view of device of the present invention for judging fragmented rock body integrity degree.
Fig. 2 (a) (vertical bearing plate) is the strata model front view in horizontal quadrature crack.
Fig. 2 (b) is horizontal quadrature crack rock model side view.
Fig. 2 (c) is horizontal quadrature crack rock model vertical view.
Fig. 3 is the strata model front view of horizontal quadrature and monocline to crack, the same to Fig. 2 (b) of side view, vertical view, figure
2(c)。
Fig. 4 is horizontal quadrature and the strata model front view in oblique orthogonal crack, and side view, vertical view be same and Fig. 2
(b), Fig. 2 (c) is identical.
Fig. 5 (a) (vertical bearing plate) is the module casting mold of the orthogonal crack rock model of production technique.
Fig. 5 (b) is the module casting mold for making oblique crack rock model.
Fig. 6 (a) (vertical bearing plate) is that apparatus of the present invention do not place fragmented rock body front view.
Fig. 6 (b) is that apparatus of the present invention do not place fragmented rock body side view.
Fig. 6 (c) is that apparatus of the present invention do not place fragmented rock body vertical view.
Fig. 7 is the first lateral bearing plate plan view.
Fig. 8 is vertical bearing plate plan view.
Fig. 9 is orthogonal joint basement model wave velocity testing arrangement of measuring-line figure.
Figure 10 is oblique joint basement model wave velocity testing arrangement of measuring-line figure.
Wherein：1. mold, 2. sheet plastics, 3. modules, 4. angular baffles, 5. first lateral bearing plates, 6. second laterally
Bearing plate, 7. horizontal direction jack, 8 vertically to jack, 9. vertical bearing plates, 10. supporting racks, 11. side frames, and 12. tests are flat
Platform, 13. apertures, 14. cross-braces, 15. piezoelectric ultrasonics excite energy converter, 16. piezoelectric ultrasonics to receive energy converter,
17. survey line.
Specific implementation mode
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless
Otherwise indicated, all technical and scientific terms used herein has and the application person of an ordinary skill in the technical field
Normally understood identical meanings.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular shape
Formula is also intended to include plural form, additionally, it should be understood that, when in the present specification use term "comprising" and/or
When " comprising ", existing characteristics, step, operation, device, component and/or combination thereof are indicated.
As background technology is introduced, the deficiencies in the prior art, in order to solve technical problem as above, this
Application proposes the device for judging fragmented rock body integrity degree.
In a kind of typical embodiment of the application, as shown in Fig. 2, the device for judging fragmented rock body integrity degree,
It include the test platform for placing physical model；Angle-style baffle 4, is vertically arranged relative to test platform with to physical model
Limit；Supporting rack is arranged across test platform 12, and supporting rack is connect with vertical press member to apply normal direction to physical model
Pressure, supporting rack are connect with the first lateral press member；Side frame, side frame are connect with the second lateral press member, and first laterally applies
Splenium part and the second lateral press member to physical model to apply confining pressure；Wave velocity testing instrument is set to test platform side, angle
Type baffle 4 and the 5 and second lateral bearing plate of the first lateral bearing plate of opposition are provided with multiple apertures 13, on a horizontal line
Keyhole formation survey line 17.
Vertical press member is connected with vertical bearing plate 9 to contact setting with physical model, is being needed in this way to physics mould
When type applies longitudinal pressure, vertical bearing plate 9 is passed downwardly through with to physical model or fragmented rock body model by vertical press member
Pressure, ensures the harmony of pressure.
First lateral press member is connect with a lateral bearing plate respectively with the second lateral press member, two vertical pressure-bearings
The rectangular structure setting of plate, such two pieces vertical bearing plates fit around physical model or fragmented rock body with angle-style baffle 4
The surrounding of model.
Supporting rack 10 is door type structure, and supporting rack includes two vertical frames of side frame 11 and connection set on 12 both sides of test platform
Channel steel cross beam, the structure across set on the middle part of test platform 12, with test platform fix by support frame bottom.
Fixation to wave velocity testing instrument for convenience, lateral the 5, the second lateral bearing plate 6 of bearing plate of angle-style baffle 4, first
It is respectively provided with trepanning.
Angle-style baffle 4 is welded to connect with the test platform 12, and angular baffle 4 is equivalent to horizontal direction reaction plate, because
This needs to weld on angle-style baffle and test platform.
Vertical press member is vertical jack；First lateral press member, the second lateral press member are respectively
Lateral jack.
Wave velocity testing instrument includes the piezoelectric-type ultrasonic wave-exciting device of 100kHz, receives energy converter and XG- Π full-wave train sound waves
Logging instrument, ultrasonic excitation device are respectively arranged on the opposition both sides of fragmented rock body with energy converter is received, and receive energy converter and full-wave train
Acoustic logging instrument connects, wherein ultrasonic excitation device receives energy converter to being erected in the trepanning of both sides.
For overcome the deficiencies in the prior art, alternative plan provided by the invention is：
Broken basement model integrated degree sorting technique based on modularization concrete, including it is described for judging brokenly
The device of detritus body integrity degree.
Fragmented rock body model integrated degree sorting technique based on modularization concrete, is as follows：
1) several physical models 1 are deposited on the inside of test platform angle-style baffle, place above physical model and vertically holds
Then pressing plate 9 vertical jack is arranged between vertical bearing plate 9 and channel steel cross beam, applying setting pressure makes vertical pressure-bearing
Plate 9 is fixed, the 7 and second lateral bearing plate 6 of the first lateral bearing plate of setting in 1 both sides of physical model, two lateral bearing plates with
It is respectively provided with a lateral jack between side frame, finally uses butter as couplant, piezoelectric ultrasonic is received into 16 He of energy converter
The aperture 13 that piezoelectric ultrasonic excitation energy converter 15 penetrates survey line 17 is connected to be tightly attached to 1 surface of physical model with conducting wire
XG- Π full wave train acustic logging instrument is connect, after the confining pressure and the normal pressure that apply setting, by opening wave velocity testing instrument, to rock mass
Longitudinal elastic wave speed is tested, and records data νpm；
2) it uses specification to pour into a mould fragmented rock body module 1 for the cylinder mold of 50 × 100mm of φ and forms fragmented rock body mould
Type after conserving setting time, receives energy converter 16 by piezoelectric ultrasonic and piezoelectric ultrasonic excites energy converter 15, use
Conducting wire connects XG- Π full wave train acustic logging instrument, tests the longitudinal elastic wave speed of fragmented rock body model, and records data νpr；
3) ν obtained according to step 1)pmThe ν obtained with step 2)prData calculate fragmented rock body model by formula (1)
Integrity factor Kv；
Kv=(υpm/υpr)2 (1)
4) strata model is extended into unit volume model, the joint group number and item number of statistical unit strata model, by public affairs
Formula (2) calculates the volume joint number J of fragmented rock body modelv：
Jv=S1+S2+······+Sn (2)
In formula：SnFor the item number on the every meter long survey line in n-th group joint；
5) according to the integrity factor K of fragmented rock body modelvWith the volume joint number J of fragmented rock body modelvValue divides broken
The integrated degree of detritus body Model.
Specifically, integrated degree is determined according to such as following table content in step 5)：
Rock Mass Integrality divides the table of comparisons
Wherein, in order to protrude the researching value of fragmented rock body model, fragmented rock body model pour middle specification using 100 ×
Other specifications of 100 × 100mm or smaller can diagonally insert one piece of plastic board 4 in mold when simulating oblique joint,
Since ultrasonic propagation is apart from limited, the length of side of fragmented rock body model is 400~500mm.
The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for the skill of this field
For art personnel, the application can have various modifications and variations.Within the spirit and principles of this application, any made by
Modification, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. the device for judging fragmented rock body integrity degree, which is characterized in that including：
Test platform for placing physical model；
Angle-style baffle is vertically arranged relative to test platform to be limited to physical model；
Supporting rack is arranged across test platform, and supporting rack is connect with vertical press member to apply normal pressure to physical model,
Supporting rack is connect with the first lateral press member；
Side frame, side frame connects with the second lateral press member, and the first lateral press member and the second transverse direction press member are with to object
It manages model and applies confining pressure；
Wave velocity testing instrument is set to test platform side.
2. the device according to claim 1 for judging fragmented rock body integrity degree, which is characterized in that the vertical pressure
Component is connected with vertical bearing plate to contact setting with physical model.
3. the device according to claim 1 for judging fragmented rock body integrity degree, which is characterized in that described first laterally
Press member is connect with a vertical bearing plate respectively with the second lateral press member, the two vertical rectangular structure settings of bearing plate.
4. according to claim 1 for judging the device of fragmented rock body integrity degree, which is characterized in that support frame as described above is
Door type structure.
5. the device according to claim 1 for judging fragmented rock body integrity degree, which is characterized in that the angle-style baffle
Trepanning is set.
6. the device according to claim 1 for judging fragmented rock body integrity degree, which is characterized in that the angle-style baffle
It is welded to connect with the test platform.
7. the device according to claim 1 for judging fragmented rock body integrity degree, which is characterized in that the vertical pressure
Component is jack；
Alternatively, the described first lateral press member, the second lateral press member are respectively jack.
8. the device according to claim 3 for judging fragmented rock body integrity degree, which is characterized in that the wave velocity testing
Instrument includes piezoelectric-type ultrasonic wave-exciting device, receives energy converter and full wave train acustic logging instrument, ultrasonic excitation device and reception transducing
Device is respectively arranged on the opposition both sides of fragmented rock body, receives energy converter and is connect with full wave train acustic logging instrument.
9. the fragmented rock body model integrated degree sorting technique based on modularization concrete, which is characterized in that including according to right
It is required that the device for judging fragmented rock body integrity degree described in any one of 1-8.
10. the fragmented rock body model integrated degree sorting technique according to claim 9 based on modularization concrete, special
Sign is, is as follows：
1) it carries out cube using concrete material and mold and tri-prismoid module pours, after conserving setting time, accumulate shape
At broken basement rock physical model, then by the longitudinal elastic wave speed of wave velocity testing platform test physical model, and data are recorded
νpm；
2) utilize concrete material and cylinder mold to pour into a mould sillar model, by opening wave velocity testing instrument, to sillar model into
Row longitudinal elastic wave velocity test, and record data νpr；
3) ν obtained according to step 1)pmThe ν obtained with step 2)prData, by the integrality system of formula (1) computational physics model
Number Kv；
Kv=(υpm/υpr)2 (1)
4) physical model is extended into unit volume model, the joint group number and item number of statistical unit strata model, by formula (2)
The volume joint number J of computational physics modelv：
Jv=S1+S2+······+Sn (2)
In formula：SnFor the item number on the every meter long survey line in n-th group joint；
5) according to integrity factor KvWith volume joint number JvValue, divides the integrated degree of physical model.
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| CN201810509084.XA CN108562648B (en) | 2018-05-24 | 2018-05-24 | Device and method for judging integrity of broken rock mass |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN201810509084.XA CN108562648B (en) | 2018-05-24 | 2018-05-24 | Device and method for judging integrity of broken rock mass |
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| CN108562648B CN108562648B (en) | 2024-02-02 |
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| CN111929426A (en) * | 2020-09-17 | 2020-11-13 | 常州市建筑科学研究院集团股份有限公司 | Method for judging integrity degree of underground buried rock mass by using rock core |
| CN113109176A (en) * | 2021-03-12 | 2021-07-13 | 中国电建集团西北勘测设计研究院有限公司 | Jointed rock in-situ shear testing device and method for relaxation process detection |
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| CN113109176A (en) * | 2021-03-12 | 2021-07-13 | 中国电建集团西北勘测设计研究院有限公司 | Jointed rock in-situ shear testing device and method for relaxation process detection |
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