CN207408280U - A kind of soil body penetration deformation testing device collapsed for covered karst area - Google Patents
A kind of soil body penetration deformation testing device collapsed for covered karst area Download PDFInfo
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- CN207408280U CN207408280U CN201721401824.5U CN201721401824U CN207408280U CN 207408280 U CN207408280 U CN 207408280U CN 201721401824 U CN201721401824 U CN 201721401824U CN 207408280 U CN207408280 U CN 207408280U
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Abstract
The utility model discloses a kind of soil body penetration deformation testing device collapsed for covered karst area, including main body casing, water drainage-supply system, Atmospheric precipitation system and monitoring monitoring system；The main body casing is used to place sample and connects other systems；The water drainage-supply system is connected in the main body casing, and the critical hydraulic pressure force value that seepage deformation destroys occurs for simulating the soil body under the conditions of different hydrodynamic；The Atmospheric precipitation system is used to the soil body occur the influence that seepage deformation destroys in the case of simulated atmosphere precipitation infiltration；The monitoring monitoring system is used to monitor the whole process that seepage deformation destruction occurs for the soil body in real time.The soil body penetration deformation that the device can combine heterogeneity soil layer and different structure is tested, and the pore water pressure situation of change in soil layer at different position can be monitored in real time, automation collection data are simultaneously handled, and can be also used for monitoring the developmental morphology of soil cave in given actual hydraulic pressure power and soil layer in real time.
Description
Technical field
The utility model belongs to the technical fields such as hazards control, geotechnical engineering, hydraulic engineering, and in particular to Yi Zhongyong
In the soil body penetration deformation testing device that covered karst area collapses.
Background technology
The soil body occur under seepage action of ground water and submarine erosion action destroy be covered karst (soil cave) collapse to be formed it is main
Reason.Since this collapse can cause more serious consequence, it is therefore desirable to growth course is formed to it and mechanism is goed deep into
Research.For now, people carry out indoor soil by taking the method that undisturbed or indoors artificial prepare disturbance sample at the scene
Body seepage deformation test.
Existing soil body penetration deformation test instrument generally directed to ambient stress it is relatively low in the case of soil body penetration deformation characteristic
It tests and designs, it is impossible to meet the requirement of soil body penetration deformation characteristic test in the case of different ambient stresses, it can not be comprehensive
Reflection acts on influence of the stress to seepage deformation characteristic on the soil body, it is impossible to reasonably determine that the soil body occurs seepage deformation and breaks
The water pressure of bad when, i.e. critical pressure.
Utility model content
For the above-mentioned problems in the prior art, the utility model provides one kind and is collapsed for covered karst area
Soil body penetration deformation testing device, which can deform feelings to the soil body penetration that heterogeneity soil layer and different structure combine
Condition is tested, and can monitor the pore water pressure situation of change in soil layer at different position, automation collection data in real time
And handled, it can be also used for monitoring the developmental morphology of soil cave in given actual hydraulic pressure power and soil layer in real time.
For this purpose, the utility model employs following technical scheme：
A kind of soil body penetration deformation testing device collapsed for covered karst area, including main body casing, supply and discharge water system
System, Atmospheric precipitation system and monitoring monitoring system；The main body casing is used to place sample and connects other systems；The supply and discharge
Water system is connected in the main body casing, and the critical of seepage deformation destruction occurs for simulating the soil body under the conditions of different hydrodynamic
Hydraulic pressure force value；The Atmospheric precipitation system is used to the soil body occur the shadow that seepage deformation destroys in the case of simulated atmosphere precipitation infiltration
It rings；The monitoring monitoring system is used to monitor the whole process that seepage deformation destruction occurs for the soil body in real time.
Further, the cross section of the main body casing is trapezoidal shape, and angle of release is 70 °, and test height 700cm is divided into
Upper, middle, and lower part；Top is dismountable poly (methyl methacrylate) plate, can be sealed, for preventing that Water hydraulic static pressure loading is excessive, causing to push up
Portion's pressure release；The sample of filling is in middle part, hole that is embedded and being mounted with different size in sample and on front and rear poly (methyl methacrylate) plate
Water pressure gauge；The bottom of lower part is equipped with opening, and bottom opening simulates the karst of a diameter 7cm.
Further, the lower part of the bottom opening connects the homemade graduated batch box of band with plastic pipe, for facing
When the latent erosion of storage coating, later stage drying is facilitated to weigh；The plastic pipe of the batch box front end is equipped with valve.
Further, the water drainage-supply system includes being equipped in the upper and lower, left and right side of main body casing each respectively mutually
Independent confession and drainage system；Main body casing left and right side is symmetrically respectively equipped with a drain valve, inlet valve and hydraulic gage；Into
Water valve connects stabilizing hydraulic pressure device, can be needed to set different hydraulic pressure values according to experiment；Hydraulic gage supplies water for monitoring babinet in real time
Both sides actual hydraulic pressure value.
Further, the Atmospheric precipitation system is included in main body casing top plate and sets there are one inlet valve；Inlet valve connects
Stabilizing hydraulic pressure device can need to set different hydraulic pressure values according to experiment.
Further, the monitoring monitoring system includes monitoring system and monitoring system two subsystems；The monitoring system
System includes two parts, and a part is provided at the hydraulic gage of organic glass wooden partition and the pore pressure gauge being embedded in sample, separately
A part is automation hydraulic pressure stable-pressure device reading；The monitoring system includes two high-definition cameras, respectively positioned at main body case
Body foreboard middle position and main body casing bottom karst opening.
Compared with prior art, the beneficial effects of the utility model are：
(1) the soil body penetration deformation that can be combined to heterogeneity soil layer and different structure is tested, and tests model
It encloses extensively, it is adaptable.
(2) the pore water pressure situation of change in soil layer at different position can be monitored in real time, and automation collection data are simultaneously
It is handled.
(3) it can be used for the actual hydraulic pressure power that monitoring is given in real time, can reasonably determine critical pressure.
(4) developmental morphology of soil cave in soil layer can be monitored in real time, and technical support is provided for science decision.
Description of the drawings
Fig. 1 is a kind of soil body penetration deformation testing device collapsed for covered karst area provided by the utility model
Tomograph.
Fig. 2 is a kind of soil body penetration deformation testing device collapsed for covered karst area provided by the utility model
Front view.
Fig. 3 is a kind of soil body penetration deformation testing device collapsed for covered karst area provided by the utility model
Left side poly (methyl methacrylate) plate floor map.
Reference sign：1st, main body casing；2nd, water drainage-supply system；3rd, Atmospheric precipitation system；4th, monitoring system is monitored；4-
1st, pore pressure gauge；4-2, hydraulic gage；5th, batch box；6th, valve.Length unit：cm.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment is described in detail the utility model, and embodiment therein and explanation be only used for
It explains the utility model, but is not intended to limit the scope of the present invention.
As depicted in figs. 1 and 2, the utility model discloses a kind of soil body penetration deformations collapsed for covered karst area
Experimental rig, including main body casing 1, water drainage-supply system 2, Atmospheric precipitation system 3 and monitoring monitoring system 4；The main body casing 1
For placing sample and connecting other systems；The water drainage-supply system 2 is connected in the main body casing, for simulating different water
The critical hydraulic pressure force value that seepage deformation destroys occurs for the soil body under dynamic condition；The Atmospheric precipitation system 3 drops for simulated atmosphere
In the case of infiltrating the soil body occurs for water the influence that seepage deformation destroys；The monitoring monitoring system 4 is sent out for monitoring the soil body in real time
The whole process that raw seepage deformation destroys.
The cross section of the main body casing 1 is trapezoidal shape, and angle of release is 70 °, and test height 700cm is divided into upper, middle and lower
Three parts；Top is dismountable poly (methyl methacrylate) plate, can be sealed, for preventing that Water hydraulic static pressure loading is excessive, causing top pressure release；In
The sample of filling is in portion, pore pressure gauge 4- that is embedded and being mounted with different size in sample and on front and rear poly (methyl methacrylate) plate
1；The bottom of lower part is equipped with opening, and bottom opening simulates the karst of a diameter 7cm.
The lower part of the bottom opening connects the homemade graduated batch box 5 of band with plastic pipe, latent for storing temporarily
The coating of erosion facilitates later stage drying to weigh, while can read experiment beginning to soil body generation seepage deformation and destroy this mistake
The total amount of outflow water in journey；The plastic pipe of 5 front end of batch box is equipped with valve 6.
The water drainage-supply system 2 includes being equipped with the confession being each independently of the others in the upper and lower, left and right side of main body casing 1 respectively
And drainage system；1 left and right side of main body casing is symmetrically respectively equipped with a drain valve, inlet valve and hydraulic gage；Inlet valve connects
Stabilizing hydraulic pressure device can need to set different hydraulic pressure values according to experiment；Hydraulic gage is actual for monitoring babinet water supply both sides in real time
Hydraulic pressure value.
The Atmospheric precipitation system 3 is included in main body casing top plate and sets there are one inlet valve and an air bleeding valve；Inlet valve
Connect stabilizing hydraulic pressure device, can be needed to set different hydraulic pressure values according to experiment, in the case of simulated atmosphere precipitation infiltration to soil
The influence that seepage deformation destroys occurs for body.
The monitoring monitoring system 4 includes monitoring system and monitoring system two subsystems；The monitoring system includes two
Part, the pore pressure gauge 4-1 that a part is provided at the hydraulic gage 4-2 of organic glass wooden partition and is embedded in sample are another
Part is automation hydraulic pressure stable-pressure device reading；The monitoring system includes two high-definition cameras, respectively positioned at main body casing
For monitoring the soil body in real time the whole of seepage deformation destruction occurs for foreboard middle position and main body casing bottom karst opening
A process.
Embodiment
Soil body penetration deformation test process and step：By changing external condition, (coating, hydrodynamic condition, precipitation are strong
Degree etc.) it is tested, the research soil body occurs seepage deformation and destroys threshold limit value.It is as follows：
(1) experimental rig is assembled, fills single structure (or multi-factor structure) overlying soil (being usually manipulated soil), manipulated soil
Preparation method usually first take workspace Representative soil sample, after drying pulverizes sieving, banket by certain dry density layering,
Since bottom, native thickness 15cm is spread for upward every layer successively, to ensure the uniformity banketed.Sensor is buried by design when banketing,
Start to test after everything in readiness.
(2) left side inlet valve is opened, water filling is carried out to left side water tank with appropriate hydraulic pressure using stabilizing hydraulic pressure device
(while paying attention to being vented) controls water intake velocity, makes the completely full water of sample, until water level reaches predetermined altitude, and it is total to record water filling
Amount, water injection time.
(3) monitoring system for unlocking, and record its initial reading；Monitoring system is opened, prepares to record.Recording should be from experiment opening
It is recorded during the beginning, high-definition camera is set in main body casing foreboard middle position and main body casing bottom karst opening respectively
Head, for monitoring the whole process that the soil body occurs seepage deformation and destroys in real time.
(4) on-test, is run.The situation of change of the main body casing bottom karst exit soil body is observed and recorded, is set
The Sensor monitorings data such as continuous time interval automatic collection processing pore pressure gauge, hydraulic gage, to obtain each parameter at any time
Between change curve；When each parameter changes over time curve appearance substantially variation, and current substantially become muddy at sometime point
When turbid, it is believed that seepage deformation destruction takes place in the soil body at this time, and the reading for remembering hydraulic gage at left side water feeding tank at this time is to face
Boundary's hydraulic pressure force value.
(5) continue experiment a period of time, after soil body penetration deformation failure tends towards stability, given again using stabilizing hydraulic pressure device
Left side water feeding tank loading next stage hydraulic pressure, continues to observe and record the situation of change of the main body casing bottom karst exit soil body
And water yield.
(6) hydraulic pressure is loaded to left side water feeding tank step by step, repeated (5), until foring seepage flow predominant pathway, left side in native case
There is bust in hydraulic gage reading at water feeding tank, at this time it is believed that off-test.The reading of record self-control metering liquid within the cartridge, and receive
The soil of latent eating away, weighs record during the experiment of collection hopper bottom deposit after drying.
(7) this after the test, closes the inlet valve of left side water tank, by 3 kinds of different depths, same depth in native case
Degree respectively takes 2 groups of soil samples, and totally 6 groups of experiment soil samples carry out the routine test of soil, obtains the basic physical property of the coating after experiment
Index (moisture content, unit weight, density, porosity etc.).After this test operation terminates, remaining overlying soil need to take in native case
Go out, carry out recycling storage again after shining dry-cure, the raw material that can be prepared when next time tests as manipulated soil.Monitor in native case
Device need to be cleaned and shady place storage is positioned over after drying, in case next time uses.
(8) experimental condition is changed：Such as increase Atmospheric precipitation system, left and right side water feeding tank pressurize simultaneously (differential water pressures) or
Soil of different nature is replaced, multi-factor structure coating etc. is changed to from single structure；Above-mentioned experiment process is repeated, obtains different operating modes
Under the conditions of the soil body occur seepage deformation destroy threshold limit value.
(9) off-test.Repairing experiment data simultaneously carry out Quantitative Study, last induction and conclusion conclusion (of pressure testing).
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Any modification, equivalent substitution and improvement made within the spirit and spirit of utility model etc., should be included in this reality
Within new protection domain.
Claims (6)
1. a kind of soil body penetration deformation testing device collapsed for covered karst area, including main body casing, water drainage-supply system,
Atmospheric precipitation system and monitoring monitoring system, it is characterised in that：The main body casing is used to place sample and connects other systems；
The water drainage-supply system is connected in the main body casing, is broken for simulating soil body generation seepage deformation under the conditions of different hydrodynamic
Bad critical hydraulic pressure force value；The Atmospheric precipitation system is used to that seepage deformation to occur to the soil body in the case of simulated atmosphere precipitation infiltration
The influence of destruction；The monitoring monitoring system is used to monitor the whole process that seepage deformation destruction occurs for the soil body in real time.
2. a kind of soil body penetration deformation testing device collapsed for covered karst area according to claim 1, special
Sign is：The cross section of the main body casing is trapezoidal shape, and angle of release is 70 °, and test height 700cm is divided into upper, middle and lower three
Part；Top is dismountable poly (methyl methacrylate) plate, can be sealed, for preventing that Water hydraulic static pressure loading is excessive, causing top pressure release；Middle part
For the sample of filling, pore pressure gauge that is embedded and being mounted with different size in sample and on front and rear poly (methyl methacrylate) plate；Under
The bottom in portion is equipped with opening, and bottom opening simulates the karst of a diameter 7cm.
3. a kind of soil body penetration deformation testing device collapsed for covered karst area according to claim 2, special
Sign is：The lower part of the bottom opening connects the homemade graduated batch box of band with plastic pipe, for storing latent erosion temporarily
Coating, facilitate the later stage drying weigh；The plastic pipe of the batch box front end is equipped with valve.
4. a kind of soil body penetration deformation testing device collapsed for covered karst area according to claim 3, special
Sign is：The water drainage-supply system include being equipped in the upper and lower, left and right side of main body casing respectively the confession that is each independently of the others and
Drainage system；Main body casing left and right side is symmetrically respectively equipped with a drain valve, inlet valve and hydraulic gage；Inlet valve connects liquid
Stable-pressure device is pressed, can be needed to set different hydraulic pressure values according to experiment；Hydraulic gage is for the monitoring actual water in babinet water supply both sides in real time
Pressure value.
5. a kind of soil body penetration deformation testing device collapsed for covered karst area according to claim 4, special
Sign is：The Atmospheric precipitation system is included in main body casing top plate and sets there are one inlet valve；Inlet valve connection stabilizing hydraulic pressure dress
It puts, can be needed to set different hydraulic pressure values according to experiment.
6. a kind of soil body penetration deformation testing device collapsed for covered karst area according to claim 5, special
Sign is：The monitoring monitoring system includes monitoring system and monitoring system two subsystems；The monitoring system includes two
Point, a part is provided at the hydraulic gage of organic glass wooden partition and the pore pressure gauge being embedded in sample, and another part is certainly
Dynamicization stabilizing hydraulic pressure device reading；The monitoring system includes two high-definition cameras, respectively positioned at main body casing foreboard center
Position and main body casing bottom karst opening.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721401824.5U CN207408280U (en) | 2017-10-27 | 2017-10-27 | A kind of soil body penetration deformation testing device collapsed for covered karst area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721401824.5U CN207408280U (en) | 2017-10-27 | 2017-10-27 | A kind of soil body penetration deformation testing device collapsed for covered karst area |
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| Publication Number | Publication Date |
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| CN207408280U true CN207408280U (en) | 2018-05-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414455A (en) * | 2022-01-17 | 2022-04-29 | 福州大学 | Seepage test device and method for simulating granite binary structure slope |
-
2017
- 2017-10-27 CN CN201721401824.5U patent/CN207408280U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414455A (en) * | 2022-01-17 | 2022-04-29 | 福州大学 | Seepage test device and method for simulating granite binary structure slope |
| CN114414455B (en) * | 2022-01-17 | 2023-08-22 | 福州大学 | Seepage test device and method for simulating granite binary structure side slope |
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Address after: No. 89 round City West Road, Xihu District, Hangzhou, Zhejiang Patentee after: Zhejiang transportation planning and Design Research Institute Co., Ltd. Address before: No. 89 round City West Road, Xihu District, Hangzhou, Zhejiang Patentee before: Zhejiang Provincial Plan Design&Research Institute of Communications |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No.928 yuhangtang Road, Xihu District, Hangzhou City, Zhejiang Province Patentee after: Zhejiang shuzhijiaoyuan Technology Co.,Ltd. Address before: 310006 No. 89 West Ring Road, Hangzhou, Zhejiang, Xihu District Patentee before: ZHEJIANG PROVINCIAL INSTITUTE OF COMMUNICATIONS PLANNING DESIGN & RESEARCH Co.,Ltd. |