CN211237275U - Water storage and precipitation landslide simulation device - Google Patents
Water storage and precipitation landslide simulation device Download PDFInfo
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- CN211237275U CN211237275U CN202020208677.5U CN202020208677U CN211237275U CN 211237275 U CN211237275 U CN 211237275U CN 202020208677 U CN202020208677 U CN 202020208677U CN 211237275 U CN211237275 U CN 211237275U
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Abstract
The utility model discloses a water storage and precipitation landslide simulation device, which comprises a side slope simulation box with an upper opening, wherein a precipitation simulation system is arranged above the side slope simulation box and is connected with a water pump; the slope simulation box is connected with the water storage system through a pipeline, and a plurality of displacement sensors and pressure sensors are arranged in the slope simulation box; and a stress loading plate is movably arranged in the slope simulation box and connected with a loading device. The utility model discloses can be very convenient through the peripheral rock mass environment of simulation reservoir, establish rainfall system, simulation reservoir retaining system, stress environment system. And the rainfall system, the simulated reservoir water storage system and the stress environment system are communicated with all the stability factors influencing the rock mass around the reservoir.
Description
Technical Field
The utility model relates to a water conservancy water and electricity landslide research technical field, concretely relates to retaining and precipitation landslide analogue means.
Background
In the water conservancy reservoir engineering, because of having the great canyon region of topographic height difference, this kind of topographic condition provides favorable condition for the emergence of landslide to under reservoir water level or precipitation condition, because the influence of water reduces the intensity between the stratum or directly reduces rock mass intensity, lead to the rock mass not enough intensity to maintain original state and then lead to the emergence of landslide and cause serious consequence. For example, in 1963, the large landslide of an Italy Waon (Vajont) reservoir, the height of a Waon arch dam is 260 meters, the large landslide is suddenly generated in a reservoir area, the surge of the top of the dam exceeds 100 meters, the impact wave enables a small town with the right bank higher than 290 meters of the top of the dam to be damaged, dam breaking water flow enables a town 1.6 kilometers downstream to be completely destroyed, and 2006 people die; in Japan, in the 50-60 s, small reservoirs were also lost.
The site selection of large-scale water conservancy and hydropower engineering is usually carried out in a deep cutting canyon with high fall to obtain the best hydropower utilization rate, the site selection inevitably meets the stability problem of a side slope under the condition of water-rock coupling, particularly in a bedding rock stratum, because a reservoir carries out periodic water storage and water discharge, a soft interlayer in the rock stratum is continuously eroded and hollowed, the connecting force between the rock stratum is reduced, and an upper rock body begins to slide downwards along a structural plane and some new cracks.
Therefore, it is necessary to research the precipitation condition and the action mechanism of reservoir water level change on the stability of rock mass. A large side slope is modeled by adopting a similar simulation method, the effect under the coupling action of the water and rock of the side slope is simulated under similar conditions, and the geological problems of complex and difficult-to-see reasons are simplified and visualized.
SUMMERY OF THE UTILITY MODEL
Not enough to the above-mentioned among the prior art, the utility model provides a retaining and precipitation landslide analogue means from multi-angle research reservoir landslide mechanism.
In order to achieve the purpose of the invention, the technical scheme adopted by the utility model is as follows:
the water storage and precipitation landslide simulation device comprises a side slope simulation box with an opening at the upper part, wherein a precipitation simulation system is arranged above the side slope simulation box and is connected with a water pump; the slope simulation box is connected with the water storage system through a pipeline, and a plurality of displacement sensors and pressure sensors are arranged in the slope simulation box; and a stress loading plate is movably arranged in the slope simulation box and connected with a loading device.
The scheme can simulate the dynamic process of different rainfall intensity conditions and periodic water levels of the reservoir and the slope instability process mechanism of hydraulic engineering under different stress conditions; the precipitation system provides precipitation with different strengths, a plurality of precast blocks are adopted in the slope simulation box to serve as rock masses, and clay can be paved among all rock mass layers to simulate weak interlayers among rock strata; the displacement sensor can collect the displacement condition of each rock stratum, and the pressure sensor is used for collecting the pore water pressure change in the weak interlayer and detecting the stress change condition in the simulated slope.
Furthermore, the rainfall simulation system comprises a plurality of water spray pipes arranged above the slope simulation box, and a plurality of spray heads are arranged on the water spray pipes; the water spray pipe is connected with a water pump through a pipeline, and the water pump is connected with the water storage tank through a pipeline.
This scheme is taken the water in the water storage box out through the water pump to through the shower nozzle blowout, simulate out the effect of precipitation, simple structure can accurately simulate out the influence of precipitation intensity to rock stratum stress.
Furthermore, a first pressure gauge, a first flow meter and a rainfall control valve are arranged on a pipeline for connecting the water spray pipe and the water pump.
The first pressure gauge of this scheme is used for taking notes water pressure, controls water pressure through the rainfall control valve, and then reaches the purpose of control rainfall intensity, and first flowmeter is used for taking notes rainfall, is convenient for study the influence of multiple rainfall variable to side slope and mud layer.
Further, the water storage system comprises a branch pipe, the branch pipe is communicated with the slope simulation box and the water pump, the slope simulation box is communicated with the water storage box through a pipeline, and a water drainage control valve is arranged on the pipeline between the slope simulation box and the water storage box.
This scheme passes through the water pump with the water suction in the water storage box in the slope simulation case, reaches the purpose that the simulation reservoir reaches predetermined water storage level to the drainage control valve can be with unnecessary water discharge water storage box in, realize water cyclic utilization.
Furthermore, a water storage control valve, a second pressure gauge and a second flow meter are arranged on a branch pipe between the slope simulation box and the water pump.
The flow that the steerable water pump of water control valve was drawn water of storing of this scheme to pressure when the second manometer detects drawing water, and the flow when the second flowmeter detects retaining obtains different analog data, is convenient for study the influence of various data to rock stratum stress.
Furthermore, the loading device comprises two hydraulic jacks, one ends of the two hydraulic jacks are fixedly connected with the stress loading plate, and the other ends of the two hydraulic jacks are fixed on the wall body.
The hydraulic jack of the scheme applies horizontal stress to the rock stratum to simulate the stress state of the rock stratum.
Furthermore, the slope simulation box is made of transparent toughened glass, and grids are divided on the four peripheral surfaces of the slope simulation box.
The scheme can visually observe the change of the rock stratum under different states, and can effectively record and observe the rock stratum development process of each stage in each grid through the division of the grids, thereby facilitating further research.
The utility model has the advantages that: the utility model discloses can be very convenient through the peripheral rock mass environment of simulation reservoir, establish rainfall system, simulation reservoir retaining system, stress environment system. The stability factors influencing the rock mass around the reservoir are communicated through a rainfall system, a simulated reservoir water storage system and a stress environment system; and (3) simulating the instability of the side slope around the reservoir, and effectively recording the development process of each stage through the shooting of a camera and the division of grids. And the effect of controlling the intensity of environmental factors is achieved through a series of controllable gates, so that the operation of experiments is facilitated.
Drawings
Fig. 1 is a front view of a water storage and precipitation landslide simulator.
FIG. 2 is a side view of a impoundment and precipitation landslide simulator.
Wherein: 1. the device comprises a spray pipe, 2, a first flow meter, 3, a first pressure meter, 4, a rainfall control valve, 5, a water storage control valve, 6, a second pressure meter, 7, a second flow meter, 8, a water pump, 9, a water storage tank, 10, a slope simulation tank, 11, a water discharge control valve, 12, a stress loading plate, 13 and a hydraulic jack.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes will be apparent to those skilled in the art as long as they are within the spirit and scope of the present invention as defined and defined by the appended claims, and all inventions contemplated by the present invention are protected.
As shown in fig. 1, the water storage and precipitation landslide simulation device comprises a slope simulation box 10 with an opening at the upper part, a precipitation simulation system is arranged above the slope simulation box 10, and the precipitation simulation system is connected with a water pump 8; the slope simulation box 10 is connected with a water storage system through a pipeline, and a plurality of displacement sensors and pressure sensors are arranged in the slope simulation box 10; a stress loading plate 12 is movably arranged in the slope simulation box 10, and the stress loading plate 12 is connected with a loading device. The displacement sensor adopts a W-DC type integrated displacement sensor, and the pressure sensor adopts an FSR406 type film pressure sensor.
The scheme can simulate the dynamic process of different rainfall intensity conditions and periodic water levels of the reservoir and the slope instability process mechanism of hydraulic engineering under different stress conditions; the rainfall system provides rainfall with different strengths, a plurality of precast blocks are adopted in the slope simulation box 10 to serve as rock masses, and clay can be paved among all rock mass layers to simulate weak interlayers among rock strata; the displacement sensor can collect the displacement condition of each rock stratum, and the pressure sensor is used for collecting the pore water pressure change in the weak interlayer and detecting the stress change condition in the simulated slope.
The rainfall simulation system comprises three equally distributed water spraying pipes 1 arranged above the slope simulation box 10, and a plurality of spray heads are arranged on the water spraying pipes 1; the spray pipe 1 is connected with a water pump 8 through a pipeline, and the water pump 8 is connected with a water storage tank 9 through a pipeline. The water pump 8 pumps out the water in the water storage tank 9, and the effect of precipitation is simulated through the spraying of the spray head, the structure is simple, and the influence of precipitation intensity on rock stratum stress can be accurately simulated.
A first pressure gauge 3, a first flowmeter 2 and a rainfall control valve 4 are arranged on a pipeline connecting the spray pipe 1 and the water pump 8; first manometer 3 is used for the record water pressure, controls water pressure through rainfall control valve 4, and then reaches the purpose of control rainfall intensity, and first flowmeter 2 is used for taking notes rainfall, is convenient for study the influence of multiple rainfall variable to side slope and mud layer.
The water storage system comprises a branch pipe, the branch pipe is communicated with the slope simulation box 10 and the water pump 8, the slope simulation box 10 is communicated with the water storage box 9 through a pipeline, and a drainage control valve 11 is arranged on the pipeline between the slope simulation box 10 and the water storage box 9; the water pump 8 pumps water in the water storage tank 9 into the slope simulation tank 10 to achieve the purpose that the simulation reservoir achieves a preset water storage level, and the drainage control valve 11 can drain redundant water into the water storage tank 9 to achieve water recycling.
A branch pipe between the slope simulation box 10 and the water pump 8 is provided with a water storage control valve 5, a second pressure gauge 6 and a second flow meter 7; the water storage control valve 5 can control the water pumping flow of the water pump 8, the second pressure gauge 6 detects the pressure during water pumping, and the second flow gauge 7 detects the water storage flow, so that different simulation data are obtained, and the influence of various data on rock stratum stress is convenient to study.
As shown in fig. 2, the loading device includes two hydraulic jacks 13, the two hydraulic jacks 13 penetrate through the back of the slope simulation box 10, one end of each hydraulic jack 13 is fixedly connected with the stress loading plate 12, and the other end of each hydraulic jack is fixed on the wall. The hydraulic jack 13 of the scheme applies horizontal stress to the rock stratum to simulate the stress state of the rock stratum.
The side slope simulation box 10 is made of transparent toughened glass, the four peripheral surfaces of the side slope simulation box 10 are divided into grids, the grids divide the observable area, the change of rock strata in different states can be observed visually, the rock stratum development process of each stage in each grid can be effectively recorded and observed through the division of the grids, and further research is facilitated.
The utility model discloses can be very convenient through the peripheral rock mass environment of simulation reservoir, establish rainfall system, simulation reservoir retaining system, stress environment system. The stability factors influencing the rock mass around the reservoir are communicated through a rainfall system, a simulated reservoir water storage system and a stress environment system; the instability of the side slope around the reservoir is simulated, the development processes of all stages can be effectively recorded through shooting of a camera and division of grids, the effect of controlling the strength of environmental factors can be achieved through a series of controllable gates, and operation of experiments is facilitated.
Claims (7)
1. A water storage and precipitation landslide simulation device is characterized by comprising a side slope simulation box (10) with an opening at the upper part, wherein a precipitation simulation system is arranged above the side slope simulation box (10), and is connected with a water pump (8); the side slope simulation box (10) is connected with a water storage system through a pipeline, and a plurality of displacement sensors and pressure sensors are arranged in the side slope simulation box (10); stress loading plates (12) are movably arranged in the side slope simulation box (10), and the stress loading plates (12) are connected with a loading device.
2. A water storage and precipitation landslide simulation device according to claim 1, wherein the precipitation simulation system comprises a plurality of water spray pipes (1) arranged above a slope simulation box (10), wherein a plurality of spray heads are arranged on the water spray pipes (1); the water spraying pipe (1) is connected with a water pump (8) through a pipeline, and the water pump (8) is connected with a water storage tank (9) through a pipeline.
3. A water storage and precipitation landslide simulation device according to claim 2, wherein a first pressure gauge (3), a first flow meter (2) and a rainfall control valve (4) are arranged on a pipeline connecting the water spray pipe (1) and the water pump (8).
4. A water storage and precipitation landslide simulation device according to claim 1, wherein the water storage system comprises a branch pipe, the branch pipe communicates the slope simulation tank (10) with the water pump (8), the slope simulation tank (10) communicates with the water storage tank (9) through a pipeline, and a drain control valve (11) is arranged on the pipeline between the slope simulation tank (10) and the water storage tank (9).
5. A water storage and precipitation landslide simulation device according to claim 4 wherein a water storage control valve (5), a second pressure gauge (6) and a second flow meter (7) are provided on a branch between the slope simulation tank and a water pump (8).
6. A water storage and precipitation landslide simulation device according to claim 1 wherein the loading device comprises two hydraulic jacks (13), one end of each hydraulic jack (13) is fixedly connected with the stress loading plate (12), and the other end of each hydraulic jack is fixed on the wall.
7. A water storage and precipitation landslide simulation device according to claim 1, wherein the slope simulation box (10) is transparent tempered glass, and the slope simulation box (10) is divided into grids on the four peripheral surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202020208677.5U CN211237275U (en) | 2020-02-25 | 2020-02-25 | Water storage and precipitation landslide simulation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020208677.5U CN211237275U (en) | 2020-02-25 | 2020-02-25 | Water storage and precipitation landslide simulation device |
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| CN211237275U true CN211237275U (en) | 2020-08-11 |
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| CN202020208677.5U Expired - Fee Related CN211237275U (en) | 2020-02-25 | 2020-02-25 | Water storage and precipitation landslide simulation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114047114A (en) * | 2021-11-12 | 2022-02-15 | 沈阳农业大学 | Outdoor portable artificial rainfall simulation device |
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2020
- 2020-02-25 CN CN202020208677.5U patent/CN211237275U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114047114A (en) * | 2021-11-12 | 2022-02-15 | 沈阳农业大学 | Outdoor portable artificial rainfall simulation device |
| CN114047114B (en) * | 2021-11-12 | 2023-11-03 | 沈阳农业大学 | Outdoor portable artificial rainfall simulation device |
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