CN207850876U - A kind of bentonite waterproof blanket test specimen tube and the apparatus for measuring permeability coefficient containing the test specimen tube - Google Patents
A kind of bentonite waterproof blanket test specimen tube and the apparatus for measuring permeability coefficient containing the test specimen tube Download PDFInfo
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- CN207850876U CN207850876U CN201820136661.0U CN201820136661U CN207850876U CN 207850876 U CN207850876 U CN 207850876U CN 201820136661 U CN201820136661 U CN 201820136661U CN 207850876 U CN207850876 U CN 207850876U
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- waterproof blanket
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- pedestal
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Abstract
A kind of bentonite waterproof blanket test specimen tube and the apparatus for measuring permeability coefficient containing the test specimen tube are related to bentonite waterproof blanket performance test field.The utility model is to solve the problems, such as to be also easy to produce disturbance in Frozen-thawed cycled device and osmotic coefficient investigating device to bentonite waterproof blanket.The utility model cylinder bottom end is sealed by pedestal, and pedestal is built-in with water-permeable pipe and cooling tube, and the upper surface of pedestal is provided with multiple osculums, and the port of water-permeable pipe is stretched out from the periphery of pedestal.Under Frozen-thawed cycled state, freezing liquid is filled in cooling tube and temperature control top plate, main control unit connects temperature controller, main control unit connects data acquisition unit, temperature sensor acquires the temperature of sample, displacement sensor acquires the frost heaving amount of bentonite waterproof blanket sample, and temperature controller adjusts the temperature of freezing liquid in cooling tube and temperature control top plate；Under gas permeability measurement state, permeates on top plate and be provided with air bleeding valve and inlet opening, the water inlet of falling head permeameter and the water outlet of water tank are connected to the inlet opening.
Description
Technical field
The utility model belongs to bentonite waterproof blanket performance test field.
Background technology
Bentonite waterproof blanket, i.e., clamp bentonite clay particle or powder, utilize bentonite between two layers of geosynthetics
Dilatancy achieve the purpose that antiseepage, pavement structure is carried and formed using geotextile.Bentonite after research Frozen-thawed cycled
Waterproof blanket infiltration coefficient applies bentonite waterproof blanket in cold district seepage control project and is of great significance.
Currently, domestic in osmotic coefficient investigating experiment after bentonite waterproof blanket Frozen-thawed cycled, being followed using freeze thawing
Sample is manually taken out after ring, then is placed in gas permeability measurement experimental rig, when sampling can be to the bentonite after Frozen-thawed cycled
Waterproof blanket sample generates disturbance, to influence science and accuracy when osmotic coefficient investigating after Frozen-thawed cycled, causes to swollen
Permeance property is grasped inaccurate after the native waterproof blanket Frozen-thawed cycled of profit, to have an adverse effect to engineering design and application.
Utility model content
The utility model is to solve existing to fill bentonite waterproof blanket in Frozen-thawed cycled device and osmotic coefficient investigating
Set it is middle tested respectively, be easy to generate disturbance to bentonite waterproof blanket sample during experiment, and then lead to test result not
Accurate problem now provides a kind of bentonite waterproof blanket test specimen tube and the apparatus for measuring permeability coefficient containing the test specimen tube.
A kind of bentonite waterproof blanket test specimen tube, cylinder 1 are the tubular construction of both ends open, and the bottom end of cylinder 1 passes through bottom
Seat 4 seals, and is to be detachably connected between cylinder 1 and pedestal 4；
Pedestal 4 is disc, and pedestal 4 is built-in with water-permeable pipe 42 and the cooling tube 41 of snakelike arrangement, the both ends of cooling tube 41
It is stretched out respectively from the periphery of pedestal 4, the upper surface of pedestal 4 is provided with multiple osculums 43, and multiple osculums 43 are and water-permeable pipe
The port of 42 connections, water-permeable pipe 42 is stretched out from the periphery of pedestal 4.
Apparatus for measuring permeability coefficient containing said sample cylinder includes bentonite waterproof blanket test specimen tube, main control unit 91,
Data acquisition unit 92, temperature controller 93, temperature sensor 94, displacement sensor 95, temperature control top plate 5, water tank 6, infiltration top
Plate 7 and falling head permeameter 8；
Described device includes Frozen-thawed cycled state and gas permeability measurement state,
Under Frozen-thawed cycled state, temperature control top plate 5 is located on the bentonite waterproof blanket sample 2 in cylinder 1, cooling tube 41 and temperature
It controls and is filled with freezing liquid in top plate 5, the water outlet of water tank 6 is connected to the port of water-permeable pipe 42,
The temperature control signals input terminal of the temperature control signals connection temperature controller 93 of main control unit 91, main control unit
The acquisition signal output end of 91 signal acquisition terminal connection data acquisition unit 92, temperature sensor 94 is for acquiring bentonite
The temperature signal of the temperature of waterproof blanket sample 2, the temperature signal output end connection data acquisition unit 92 of temperature sensor 94 is defeated
Enter end, displacement sensor 95 is used to acquire the frost heaving amount of bentonite waterproof blanket sample 2, the displacement signal output of displacement sensor 95
The displacement signal input terminal of end connection data acquisition unit 92, temperature controller 93 is for adjusting cooling tube 41 and temperature control top plate 5
The temperature of interior freezing liquid；
Under gas permeability measurement state, the end sealing of cylinder 1, infiltration top plate 7 are equipped with air bleeding valve 71 by infiltration top plate 7
And inlet opening, the water inlet of falling head permeameter 8 and the water outlet of water tank 6 are connected to the inlet opening.
Compared with prior art, the utility model has the following advantages：
The utility model experimental rig can consider that bentonite waterproof blanket sample freezing and thawing test is tried with infiltration coefficient simultaneously
The continuity tested can be reduced to greatest extent to the perturbation after bentonite waterproof blanket sample freezing and thawing test, can be more acurrate
Ground measures bentonite waterproof blanket infiltration coefficient after Frozen-thawed cycled.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of bentonite waterproof blanket test specimen tube；
Fig. 2 is the overhead sectional view of bottom plate；
Fig. 3 is the front sectional view of bottom plate；
Fig. 4 is the structural schematic diagram of test specimen tube under Frozen-thawed cycled state；
Fig. 5 is the structural schematic diagram of test specimen tube under gas permeability measurement state；
Fig. 6 is the electrical schematic diagram of apparatus for measuring permeability coefficient.
Specific implementation mode
Specific implementation mode one：Present embodiment is illustrated referring to figs. 1 to Fig. 3, one kind described in present embodiment is swollen
The native waterproof blanket test specimen tube of profit, cylinder 1 is the tubular construction of both ends open, and the bottom end of cylinder 1 is sealed by pedestal 4, and cylinder 1
It is to be detachably connected between pedestal 4.
Pedestal 4 is disc, and pedestal 4 is built-in with water-permeable pipe 42 and the cooling tube 41 of snakelike arrangement, the both ends of cooling tube 41
It is stretched out respectively from the periphery of pedestal 4, the upper surface of pedestal 4 is provided with multiple osculums 43, and multiple osculums 43 are and water-permeable pipe
The port of 42 connections, water-permeable pipe 42 is stretched out from the periphery of pedestal 4.
In practical application, bentonite waterproof blanket sample 2 and permeable stone 3 are both placed in cylinder 1, according to different tests need
It asks and connects different experiment equipments, achieve the purpose that different.Present embodiment is only before experiment by bentonite waterproof blanket sample 2
It is put into cylinder 1, subsequently no longer needs to move bentonite waterproof blanket sample 2, reduce the error of mobile generation so that real
It is more accurate with measurement result to test.
The outer diameter of above-mentioned cylinder 1 is 12cm, wall thickness 1cm, is highly 20cm.And cylinder 1 is plexiglass cylinder.
Specific implementation mode two：Present embodiment is illustrated with reference to fig. 4 to fig. 6, contains tool described in present embodiment
The apparatus for measuring permeability coefficient of test specimen tube described in body embodiment one, including bentonite waterproof blanket test specimen tube, main control unit 91,
Data acquisition unit 92, temperature controller 93, temperature sensor 94, displacement sensor 95, temperature control top plate 5, water tank 6, infiltration top
Plate 7 and falling head permeameter 8；
Described device includes Frozen-thawed cycled state and gas permeability measurement state,
Under Frozen-thawed cycled state, temperature control top plate 5 is located on the bentonite waterproof blanket sample 2 in cylinder 1, cooling tube 41 and temperature
It controls and is filled with freezing liquid in top plate 5, the water outlet of water tank 6 is connected to the port of water-permeable pipe 42,
The temperature control signals input terminal of the temperature control signals connection temperature controller 93 of main control unit 91, main control unit
The acquisition signal output end of 91 signal acquisition terminal connection data acquisition unit 92, temperature sensor 94 is for acquiring bentonite
The temperature signal of the temperature of waterproof blanket sample 2, the temperature signal output end connection data acquisition unit 92 of temperature sensor 94 is defeated
Enter end, displacement sensor 95 is used to acquire the frost heaving amount of bentonite waterproof blanket sample 2, the displacement signal output of displacement sensor 95
The displacement signal input terminal of end connection data acquisition unit 92, temperature controller 93 is for adjusting cooling tube 41 and temperature control top plate 5
The temperature of interior freezing liquid；
Under gas permeability measurement state, the end sealing of cylinder 1, infiltration top plate 7 are equipped with air bleeding valve 71 by infiltration top plate 7
And inlet opening, the water inlet of falling head permeameter 8 and the water outlet of water tank 6 are connected to the inlet opening.
In practical application, being first attached device according to the structure under Frozen-thawed cycled state, and bentonite is prevented
Water blanket sample 2 is placed in cylinder 1, to carry out freeze-thaw cycle experiment.After experiment, the device being connect with cylinder 1 is removed,
Then it is attached according to the structure under gas permeability measurement state, and then completes gas permeability measurement.In above process, exist
Mobile sample is just no longer needed to after having placed sample, prevents from generating disturbance to sample, reaches swollen after more accurately measuring Frozen-thawed cycled
The purpose of the native waterproof blanket infiltration coefficient of profit.
In application, falling head permeameter 8 and water tank 6 are connected to by water pipe with the inlet opening on infiltration top plate 7 respectively, become water
Head permeameter 8 and the access and water tank 6 of infiltration top plate 7 are respectively equipped with valve on the access of infiltration top plate 7.
Temperature control top plate 5 is equipped with inlet opening and fluid hole, and inlet opening is connected to freezing liquid inlet tube, fluid hole and freezing liquid
Outlet tube is connected to.
Claims (6)
1. a kind of bentonite waterproof blanket test specimen tube, which is characterized in that cylinder (1) is the tubular construction of both ends open, cylinder (1)
Bottom end by pedestal (4) seal, and between cylinder (1) and pedestal (4) be detachably connected；
Pedestal (4) is disc, and pedestal (4) is built-in with water-permeable pipe (42) and the cooling tube (41) of snakelike arrangement, cooling tube (41)
Both ends respectively from the periphery of pedestal (4) stretch out, the upper surface of pedestal (4) is provided with multiple osculums (43), multiple osculums
(43) it is connected to water-permeable pipe (42), the port of water-permeable pipe (42) is stretched out from the periphery of pedestal (4).
2. a kind of bentonite waterproof blanket test specimen tube according to claim 1, which is characterized in that the outer diameter of cylinder (1) is
12cm, wall thickness 1cm, highly it is 20cm.
3. a kind of bentonite waterproof blanket test specimen tube according to claim 1, which is characterized in that cylinder (1) is organic glass
Glass cylinder.
4. the apparatus for measuring permeability coefficient containing any test specimen tube of claims 1 to 3, which is characterized in that including bentonite
Waterproof blanket test specimen tube, main control unit (91), data acquisition unit (92), temperature controller (93), temperature sensor (94), position
Displacement sensor (95), temperature control top plate (5), water tank (6), infiltration top plate (7) and falling head permeameter (8)；
Described device includes Frozen-thawed cycled state and gas permeability measurement state,
Under Frozen-thawed cycled state, temperature control top plate (5) is located on the bentonite waterproof blanket sample (2) in cylinder (1), cooling tube (41)
With freezing liquid is filled in temperature control top plate (5), the water outlet of water tank (6) is connected to the port of water-permeable pipe (42)；
The temperature control signals input terminal of the temperature control signals connection temperature controller (93) of main control unit (91), main control unit
(91) the acquisition signal output end of signal acquisition terminal connection data acquisition unit (92), temperature sensor (94) are swollen for acquiring
The temperature of the native waterproof blanket sample (2) of profit, the temperature signal output end connection data acquisition unit (92) of temperature sensor (94)
Temperature signal input, displacement sensor (95) are used to acquire the frost heaving amount of bentonite waterproof blanket sample (2), displacement sensor
(95) the displacement signal input terminal of displacement signal output end connection data acquisition unit (92), temperature controller (93) is for adjusting
The temperature of whole cooling tube (41) and temperature control top plate (5) interior freezing liquid；
Under gas permeability measurement state, the end sealing of cylinder (1), infiltration top plate (7) are equipped with air bleeding valve by infiltration top plate (7)
(71) it is connected to the inlet opening with inlet opening, the water inlet of falling head permeameter (8) and the water outlet of water tank (6).
5. apparatus for measuring permeability coefficient according to claim 4, which is characterized in that falling head permeameter (8) and water tank (6)
Be connected to respectively with the inlet opening in infiltration top plate (7) by water pipe, falling head permeameter (8) and the access for permeating top plate (7) and
Water tank (6) is respectively equipped with valve on the access of infiltration top plate (7).
6. apparatus for measuring permeability coefficient according to claim 4, which is characterized in that temperature control top plate (5) is equipped with inlet opening
And fluid hole, inlet opening are connected to freezing liquid inlet tube, fluid hole is connected to freezing liquid outlet tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820136661.0U CN207850876U (en) | 2018-01-26 | 2018-01-26 | A kind of bentonite waterproof blanket test specimen tube and the apparatus for measuring permeability coefficient containing the test specimen tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820136661.0U CN207850876U (en) | 2018-01-26 | 2018-01-26 | A kind of bentonite waterproof blanket test specimen tube and the apparatus for measuring permeability coefficient containing the test specimen tube |
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| Publication Number | Publication Date |
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| CN207850876U true CN207850876U (en) | 2018-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820136661.0U Expired - Fee Related CN207850876U (en) | 2018-01-26 | 2018-01-26 | A kind of bentonite waterproof blanket test specimen tube and the apparatus for measuring permeability coefficient containing the test specimen tube |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108226009A (en) * | 2018-01-26 | 2018-06-29 | 黑龙江省水利科学研究院 | A kind of bentonite waterproof blanket test specimen tube and the apparatus for measuring permeability coefficient containing the test specimen tube |
| CN109253941A (en) * | 2018-11-12 | 2019-01-22 | 东北大学 | A kind of unsaturated soil freezing-thawing test device |
-
2018
- 2018-01-26 CN CN201820136661.0U patent/CN207850876U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108226009A (en) * | 2018-01-26 | 2018-06-29 | 黑龙江省水利科学研究院 | A kind of bentonite waterproof blanket test specimen tube and the apparatus for measuring permeability coefficient containing the test specimen tube |
| CN109253941A (en) * | 2018-11-12 | 2019-01-22 | 东北大学 | A kind of unsaturated soil freezing-thawing test device |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180911 Termination date: 20210126 |
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| CF01 | Termination of patent right due to non-payment of annual fee |