CN204142710U - The test unit of tunnel surrounding landslide under simulated rainfall and seepage action of ground water - Google Patents
The test unit of tunnel surrounding landslide under simulated rainfall and seepage action of ground water Download PDFInfo
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- CN204142710U CN204142710U CN201420643628.9U CN201420643628U CN204142710U CN 204142710 U CN204142710 U CN 204142710U CN 201420643628 U CN201420643628 U CN 201420643628U CN 204142710 U CN204142710 U CN 204142710U
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- 239000003673 groundwater Substances 0.000 title claims abstract description 27
- 238000012360 testing method Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 238000004088 simulation Methods 0.000 claims abstract description 26
- 239000011435 rock Substances 0.000 claims abstract description 18
- 238000005259 measurement Methods 0.000 claims abstract description 15
- 238000006073 displacement reaction Methods 0.000 claims abstract description 5
- 239000011521 glass Substances 0.000 claims description 12
- 239000005341 toughened glass Substances 0.000 claims description 9
- 238000005325 percolation Methods 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000013307 optical fiber Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 9
- 239000002352 surface water Substances 0.000 abstract description 6
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000000750 progressive effect Effects 0.000 abstract 3
- 239000000835 fiber Substances 0.000 abstract 1
- 238000004458 analytical method Methods 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000001066 destructive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011990 functional testing Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
A test unit for tunnel surrounding landslide under simulated rainfall and seepage action of ground water, it comprises model test box, rainfall simulation system, groundwater flow modeling system, underground water supply system, water cut test macro, stress monitoring system, Digital photographic non-contact measurement system and fiber grating displacement monitoring system that rainfall is adjustable.By the progressive failure process of tunnel weak broken wall rock under simulation surface water and seepage action of ground water effect, the mechanical behavior of breaking surrounding rock under the condition of raining that quantitative examination is different and different seepage action of ground water path conditions.By obtaining the multiple physical field information in tunnel surrounding landslide process, analyze the landslide multiple information feature of different evolution stages and the inner link of each field information, determine progressive failure process and damage-form, the scope of tunnel weak broken wall rock under Different factor, for the progressive failure mechanism and dynamic pressure arching disclosing weak broken wall rock under rainfall and seepage action of ground water condition provides effective foundation.
Description
Technical field
The utility model relates to a kind of tunnel model test device, and especially a kind of multifunctional tunnel model test apparatus being applicable to simulate under surface water and seepage action of ground water effect, belongs to Tunnel Engineering geologic hazard model test field.
Background technology
Flourish along with China's transport development, the growth rate in tunnel is more and more faster, and construction scale is increasing.Have saying of " ten tunnels nine leaking " in the construction in tunnel, under long-term groundwater effect, easily there is moderate finite deformation even unstable failure in tunnel surrounding.Excavation itself due to tunnel may form a corridor of catchmenting, and can cause surrouding rock stress distribution again simultaneously, causes country rock infiltration coefficient to increase, thus to increase in stratum underground water to the impact of Analyses of Tunnel Wall Rock Stability.
Tunnel is a strip underground structure, engineering geological condition along the line is complicated, often to build tunnel at water abundant ground or rainy season, and water has adverse effect to Analyses of Tunnel Wall Rock Stability, therefore, it is necessary for carrying out the research of tunnel wall rock deformation failure mechanism under rainfall and seepage action of ground water effect.At present about quantitative examination surface water or the rarely seen report of the research of underground water to breaking surrounding rock mechanical behavior, the tunnel model test particularly carrying out rainfall and seepage action of ground water is still rare, for the tunnel deformation damage study under the conditions such as different rainfall pattern, different underground water percolation path, lack the model test apparatus reasonably explained and analyze.
Utility model content
The purpose of this utility model is for problems of the prior art, provide a kind of structure and method simple, can the test unit of tunnel surrounding landslide under simulated rainfall and seepage action of ground water.
The test unit of tunnel surrounding landslide under simulated rainfall of the present utility model and seepage action of ground water, comprise water cut measurement system, Digital photographic non-contact measurement system, also comprise square model casing, four angles of model casing are provided with the column of band glass slot, four faces of model casing are tempered glass, the tempered glass in front is detachable, and model casing periphery is fixed through bolt, and is provided with that guarantee is not seeped water, watertight rubber weather strip; Model casing top is provided with rainfall simulation system, model casing is interval with multichannel for simulating the seepage flow water pipe of different underground water percolation path, multi-path seepage water pipe water inlet is equipped with operation valve, and the side of model casing is provided with special feed system of supplying subsurface water to model casing bottom; Be filled with simulation tunnel country rock in described model casing, build the fluid structurecoupling analog material of simulation tunnel, in the surrounding bed of simulation tunnel and around the cross section, tunnel of structure simulation, lay multiple sensor and Optical Fiber Grating Displacement Meter; Described water cut measurement system is located at model casing central upper portion position through support symmetry, and described Digital photographic non-contact measurement system is located at the dead ahead of model casing.
The force (forcing) pump that described underground water supply system comprises the graduated glass water tank of band, is connected with glass water tank, force (forcing) pump is connected with model casing bottom water inlet by the road, the pipeline entering model casing is provided with successively and controls total flow flowmeter, the velocimeter of regulation and control flowing velocity and groundwater supply operation valve.
Described rainfall simulation system comprises many rows water-supply-pipe of simulated rainfall size, water-supply-pipe is furnished with some rainfall shower nozzles, and water-supply-pipe is provided with the switch valve controlling the shower nozzle water yield, and is provided with flow control valve and water pressure gauge.
Beneficial effect: owing to have employed technique scheme, the utility model can run up to a certain degree the phenomenon and the unstability occurred is caved in by tunnel wall rock deformation under simulated rainfall effect, simulated groundwater different percolation path, different seepage flow and different percolation flow velocity can produce piping and cause distortion and the slump phenomenon of country rock in tunnels again, can also the deformation failure situation of tunnel surrounding under simulated rainfall and seepage action of ground water combined action.This model can the various factors of comprehensive simulation Analyses of Tunnel Wall Rock Stability, especially can realize the simulation of breaking surrounding rock destructive process under water effect, belong to multi-functional test unit, be convenient to the impact of quantitative examination water on tunnel breaking surrounding rock mechanical behavior.Compared with its prior art, its advantage has:
1) rainer adopted is not only controlled, and rainfall amount is adjustable, can simulate multiple rainfall pattern, realizes the simulation of tunnel wall rock deformation destructive process under different rainfall operating mode.
2) by water inlet pipe, rising pipe that preference pattern case both sides are different, can the different percolation path of simulated groundwater on the impact of tunnel breaking surrounding rock stability, and can by flowmeter and velocimeter, analyze the Distortion Disciplinarian of tunnel surrounding under different flow and flow velocity.
3) model casing front is dismountable tempered glass, by the tempered glass of prefabricated different tunnels hole, as bicycle road or two-way traffic, circle or non-round uniform cross section pattern, the tunnel model test of cross section, different tunnel and different excavation method under surface water or seepage action of ground water effect can be carried out.
4) noncontact Digital photographic measurement system is adopted in model, and the reprocessing analysis software adopting seminar independently to work out, realize whole audience monitoring and the analysis of displacement field in Tunnel Landslide process.
5) this test unit belongs to multi-functional tunnel model test device, comprehensively can analyze the impact of each influence factor on Analyses of Tunnel Wall Rock Stability, especially can analyze the impact of surface water or seepage action of ground water.Because the factor considered is comparatively comprehensively with comprehensive, therefore can more fully for studying the tunnel wall rock deformation failure mechanism under rainfall and seepage action of ground water effect.
Accompanying drawing explanation
Fig. 1 is test unit structural representation of the present utility model;
Fig. 2 is the plan structure schematic diagram of model casing of the present utility model;
Fig. 3 is model casing three-dimensional structure schematic diagram of the present utility model.
Wherein: 1-model casing; 2-tempered glass; Cross section, 3-tunnel; 4-seepage flow water pipe; 5-water flow control valve; 6-water-supply-pipe; 7-rainfall shower nozzle; 8-rainfall simulation system; 9-support; 10-sensor; 11-water cut measurement system; 12-column; 13-groundwater supply operation valve; 14-flowmeter; 15-velocimeter; 16-feed pipe; 17-force (forcing) pump; 18-glass water tank; 19-fluid structurecoupling analog material.
Embodiment
Below in conjunction with accompanying drawing, an embodiment of the present utility model is further described:
As shown in Figure 1, the test unit of tunnel surrounding landslide under simulated rainfall of the present utility model and seepage action of ground water, primarily of model casing 1, rainfall simulation system 8, water cut measurement system 11 and Digital photographic non-contact measurement System's composition, model casing 1 is square, four angles are provided with the column 12 of band glass slot, four faces of model casing 1 are tempered glass, for the section situation of the different tunnel surrounding layer of perspective simulation, the tempered glass in front is detachable, offers the shape in section hole and the size of reserving hole for tunnel; Model casing 1 periphery adopts rubber strip sealing, bolt fixes, reach do not seep water, water-tight; Model casing 1 top is provided with rainfall simulation system 8, described rainfall simulation system 8 comprises many rows water-supply-pipe 6 of simulated rainfall size, water-supply-pipe 6 is furnished with some rainfall shower nozzles 7, water-supply-pipe 6 is provided with the switch valve controlling the shower nozzle water yield, and is provided with flow control valve and water pressure gauge.Can fixing quantity hydraulic pressure and the water yield, wherein rainfall aqueduct 6 connects water tank 18 to realize rainfall supply, and reach the effect of simulation surface water seepage flow, rainfall simulation system 8 is connected on the steel bracket on model casing 1 top.Model casing 1 is interval with multichannel for simulating the seepage flow water pipe 4 of different underground water percolation path, multi-path seepage water pipe 4 water inlet is equipped with operation valve 5, and the side of model casing 1 is provided with special feed system of supplying subsurface water to model casing 1 bottom; The force (forcing) pump 17 that described underground water supply system comprises the graduated glass water tank 18 of band, is connected with glass water tank 18, force (forcing) pump 17 is connected with model casing 1 bottom water inlet by the road, the pipeline entering model casing 1 is provided with successively the flowmeter 14, the velocimeter 15 of regulation and control flowing velocity and the groundwater supply operation valve 13 that control total flow, required water source is supplied by glass water tank 18, confluent and the flow velocity of underground water is controlled by flowmeter 14 and velocimeter 15, in addition feed pipe 16 connects force (forcing) pump 17, then connect glass water tank 18, realize underground water weight feed.Be filled with fluid structurecoupling analog material 19 in described model casing 1 for simulation tunnel country rock, structure simulation tunnel, and lay multiple sensor 10 and Optical Fiber Grating Displacement Meter in the surrounding bed of simulation tunnel and around cross section, tunnel 3; Described water cut measurement system 11 is located at model casing 1 central upper portion position through frame support 9 symmetry, and as shown in Figure 2, described Digital photographic non-contact measurement system is located at the dead ahead of model casing 1, as shown in Figure 3.
Claims (3)
1. the test unit of tunnel surrounding landslide under a simulated rainfall and seepage action of ground water, comprise water cut measurement system (11), Digital photographic non-contact measurement system, it is characterized in that: also comprise square model casing (1), four angles of model casing (1) are provided with the column (12) of band glass slot, four faces of model casing (1) are tempered glass, the tempered glass in front is detachable, model casing (1) periphery is fixed through bolt, and is provided with that guarantee is not seeped water, watertight rubber weather strip; Model casing (1) top is provided with rainfall simulation system (8), model casing (1) is interval with multichannel for simulating the seepage flow water pipe (4) of different underground water percolation path, multi-path seepage water pipe (4) water inlet is equipped with operation valve (5), and the side of model casing (1) is provided with to supply subsurface water feed system to model casing (1) specially; Be filled with the fluid structurecoupling analog material (19) of simulation tunnel country rock in described model casing (1), in the surrounding bed of simulation tunnel and around the cross section, tunnel (3) of structure simulation, lay multiple sensor (10) and Optical Fiber Grating Displacement Meter; Described water cut measurement system (11) is located at model casing (1) central upper portion position through support (9) symmetry, and described Digital photographic non-contact measurement system is located at the dead ahead of model casing (1).
2. the test unit of tunnel surrounding landslide under a kind of simulated rainfall as claimed in claim 1 and seepage action of ground water, it is characterized in that: the force (forcing) pump (17) that described underground water supply system comprises the graduated glass water tank of band (18), is connected with glass water tank (18), force (forcing) pump (17) is connected with model casing (1) water inlet by the road, the pipeline entering model casing (1) is provided with successively the flowmeter (14), the velocimeter (15) of regulation and control flowing velocity and the groundwater supply operation valve (13) that control total flow.
3. the test unit of tunnel surrounding landslide under a kind of simulated rainfall as claimed in claim 1 and seepage action of ground water, it is characterized in that: described rainfall simulation system (8) comprises many rows water-supply-pipe (6) of simulated rainfall size, water-supply-pipe (6) is furnished with some rainfall shower nozzles (7), water-supply-pipe (6) is provided with the switch valve controlling the shower nozzle water yield, and is provided with flow control valve and water pressure gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420643628.9U CN204142710U (en) | 2014-10-30 | 2014-10-30 | The test unit of tunnel surrounding landslide under simulated rainfall and seepage action of ground water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420643628.9U CN204142710U (en) | 2014-10-30 | 2014-10-30 | The test unit of tunnel surrounding landslide under simulated rainfall and seepage action of ground water |
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| CN204142710U true CN204142710U (en) | 2015-02-04 |
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| CN201420643628.9U Expired - Fee Related CN204142710U (en) | 2014-10-30 | 2014-10-30 | The test unit of tunnel surrounding landslide under simulated rainfall and seepage action of ground water |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330533A (en) * | 2014-10-30 | 2015-02-04 | 中国矿业大学 | Testing device and method for simulating collapse of tunnel surrounding rock under conditions of rainfall and underground water seepage |
| CN105297785A (en) * | 2015-04-30 | 2016-02-03 | 中国电力科学研究院 | Foundation detecting device and detecting method |
| CN106596278A (en) * | 2016-12-07 | 2017-04-26 | 北京工业大学 | Testing device for verifying bottom drainage and pressure releasing effects of tunnel in water-rich area |
| WO2018050079A1 (en) * | 2016-09-14 | 2018-03-22 | 山东大学 | Device and method for testing fractured rock mass collapse chipping and fracture water bursting |
| CN107870097A (en) * | 2017-11-07 | 2018-04-03 | 西南石油大学 | A kind of tunnel portal slope stability simulation system and application method |
| CN110275008A (en) * | 2019-06-11 | 2019-09-24 | 同济大学 | A kind of contactless tunnel excavation physical model and test method of analog rainfall |
| CN114965953A (en) * | 2022-05-19 | 2022-08-30 | 湖南大学 | Movable door test device for influence of differential settlement on soil arch effect under seepage effect |
-
2014
- 2014-10-30 CN CN201420643628.9U patent/CN204142710U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330533A (en) * | 2014-10-30 | 2015-02-04 | 中国矿业大学 | Testing device and method for simulating collapse of tunnel surrounding rock under conditions of rainfall and underground water seepage |
| CN105297785A (en) * | 2015-04-30 | 2016-02-03 | 中国电力科学研究院 | Foundation detecting device and detecting method |
| WO2018050079A1 (en) * | 2016-09-14 | 2018-03-22 | 山东大学 | Device and method for testing fractured rock mass collapse chipping and fracture water bursting |
| US10768083B2 (en) | 2016-09-14 | 2020-09-08 | Shandong University | Test device and test method of fractured rock mass collapse and rockfall and fracture water inrush |
| CN106596278A (en) * | 2016-12-07 | 2017-04-26 | 北京工业大学 | Testing device for verifying bottom drainage and pressure releasing effects of tunnel in water-rich area |
| CN107870097A (en) * | 2017-11-07 | 2018-04-03 | 西南石油大学 | A kind of tunnel portal slope stability simulation system and application method |
| CN110275008A (en) * | 2019-06-11 | 2019-09-24 | 同济大学 | A kind of contactless tunnel excavation physical model and test method of analog rainfall |
| CN114965953A (en) * | 2022-05-19 | 2022-08-30 | 湖南大学 | Movable door test device for influence of differential settlement on soil arch effect under seepage effect |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20161030 |
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| CF01 | Termination of patent right due to non-payment of annual fee |