CN210572292U - Landslide test device for simulating rainfall influence and vibration effect - Google Patents
Landslide test device for simulating rainfall influence and vibration effect Download PDFInfo
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- CN210572292U CN210572292U CN201920847013.0U CN201920847013U CN210572292U CN 210572292 U CN210572292 U CN 210572292U CN 201920847013 U CN201920847013 U CN 201920847013U CN 210572292 U CN210572292 U CN 210572292U
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Abstract
The utility model provides a landslide test device of rainfall simulation influence and vibration effect relates to the landslide test field. This landslide test device includes base, the open proof box in top, locates rainfall analogue means and the vibration actuating mechanism of proof box top, and proof box horizontal migration installs on the base, and at least one side of proof box is equipped with the transparent panel that is used for observing the incasement landslide to change, and vibration actuating mechanism locates on the base, and vibration actuating mechanism's drive end push-and-pull proof box is in order to simulate horizontal vibration. The rainfall simulation device sprays and simulates rainfall to the side slope in the test box, the vibration driving mechanism applies continuous and stable horizontal vibration to the test box, the vibration influence of an actual earthquake on the side slope is simulated, the actual earthquake load effect is close to the actual earthquake load effect in comparison with the existing vibration test, the acting force of the earthquake on the side slope can be simulated more truly, and the process of simulating rainfall influence and earthquake action and generating landslide under the dual factor is realized.
Description
Technical Field
The utility model relates to a landslide test technical field, concretely relates to landslide test device of rainfall simulation influence and vibration effect.
Background
Side slope landslide is a common geological disaster, and the important factor for inducing landslide is rainwater erosion, but at present, the understanding and the research on rainfall induced landslide are not deep enough, and the occurrence mechanism and the occurrence rule of rainfall type landslide need to be revealed through experimental simulation.
The invention discloses a multifunctional rainfall landslide indoor test device and particularly discloses a test device which comprises a toughened glass simulation box and a metal frame, wherein multiple rows of moisture sensor mounting holes and gap water pressure sensor mounting holes are symmetrically distributed on two sides of the toughened glass simulation box, the moisture sensors and the gap water pressure sensors are respectively arranged on the corresponding mounting holes, the bottom of the toughened glass simulation box is a metal bottom plate, a drain hole is formed in the bottom of the front door of the toughened glass simulation box, a filter screen is arranged at the drain hole to prevent soil samples from being flushed away and blocking the drain hole, and a rainfall simulation system is arranged on the top cover of the toughened glass simulation box. The test device can simulate the rainfall to detect the volume water content and the water pressure of the gap in the soil body, and accurately observe the deformation and damage process of the side slope.
The above prior art test device can only simulate the influence of rainfall on landslide, but actually, when extreme meteorological disasters occur, a series of geological problems, such as earthquake, are accompanied, which undoubtedly increases the complexity of landslide. For example, the Chinese patent application with application publication No. CN104751725A and application publication No. 2015.07.01 discloses a slope landslide teaching demonstration device and a test method, and particularly discloses that the teaching demonstration device comprises a PVC test groove, when the damage of earthquake load to a slope is demonstrated, the test groove is placed on an eccentric wheel shaft, a small motor is connected with the eccentric wheel shaft, equipment is placed on a bottom plate of the experiment device, and the vibration load is used for simulating the vibration load when the earthquake occurs through vibration.
However, the test groove is arranged on the eccentric wheel shaft, only can generate ripple action along with the running of the eccentric wheel shaft, has large action deviation with the actual earthquake load, and cannot truly simulate the influence of the earthquake on landslide.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, an object of the utility model is to provide a landslide test device of rainfall simulation influence and vibration effect to it is big with the earthquake load effect deviation of reality to solve current experiment, can not really simulate out the problem of the influence that the earthquake produced to the landslide.
The technical scheme of the utility model is that:
the landslide test device for simulating rainfall influence and vibration effect comprises a base, a test box with an open top, a rainfall simulation device and a vibration driving mechanism, wherein the rainfall simulation device and the vibration driving mechanism are arranged above the test box, the test box is horizontally movably arranged on the base, at least one side face of the test box is provided with a transparent panel used for observing landslide change in the test box, the vibration driving mechanism is arranged on the base, and a driving end of the vibration driving mechanism pushes and pulls the test box to simulate horizontal vibration.
Has the advantages that: during the use, rainfall analogue means sprays the rainfall phenomenon of simulation rainy day to the side slope in the test box, applys lasting, stable horizontal vibration to the test box through vibration actuating mechanism to simulate out the vibration effect that actual earthquake produced the side slope, compare in the vibration test among the prior art, be close to actual earthquake load effect, can simulate the effort of earthquake to the side slope more really, realized the process that the landslide produced under the dual factor of simulation rainfall influence and earthquake effect.
Furthermore, in order to improve the simulation precision of the earthquake, a guide groove extending along the horizontal vibration direction is arranged on the base, and the test box is movably installed in the guide groove in a guiding mode. The direction accuracy of the test box when the test box vibrates back and forth is ensured, and the interference of the vibration effect caused by the uneven board surface on the test box is avoided.
Further, in order to reduce the moving friction force of the test box, rollers are mounted at the bottom of the test box, and the rollers are in guiding moving fit with the guide grooves.
Furthermore, in order to simplify a vibration driving mechanism and ensure that the amplitude and the speed of the vibration action are adjustable, the vibration driving mechanism is a telescopic cylinder or a hydraulic cylinder, and the telescopic direction of the vibration driving mechanism is arranged along the extending direction of the guide groove.
Furthermore, in order to improve the accuracy and the authenticity of the simulation test, the test box is rectangular, and seepage holes for supplying rainwater in the box to be discharged outside are uniformly distributed on two opposite side panels of the test box perpendicular to the horizontal vibration direction at intervals. The redundant rainwater in the box can be discharged out of the box through the water seepage holes, so that the soaking effect on the side slope due to rainwater accumulation is avoided.
Furthermore, in order to ensure that microscopic observation can be carried out on the test, the test box is in a cuboid shape, and mounting holes for mounting the measuring sensors are uniformly distributed on two opposite side panels of the test box, which are perpendicular to the horizontal vibration direction, at intervals.
Furthermore, in order to ensure that the test can be observed microscopically, the bottom plate of the test box is uniformly distributed with accommodating holes for installing the soil pressure sensors at intervals.
Furthermore, in order to make the slight deformation of the side slope more obvious, improve the convenience of observation and simplify subsequent measurement operation, two side surfaces of the test box parallel to the horizontal vibration direction are observation side surfaces, the transparent panel is arranged on the observation side surfaces of the test box, and the transparent panel is provided with a coordinate grid.
Further, the base includes base plate and water tank, the guide way is arranged on the base plate, the water tank is located the tip position of the guide way of base plate, vibration actuating mechanism connects the relative side position of water tank and proof box.
Furthermore, in order to stably control the rainfall, the rainfall simulation device comprises a pump body extending into the water tank below the liquid level, a spray pipe erected above the test box, and a pipeline communicated with the pump body and the spray pipe, wherein a control valve is connected to the pipeline in series.
Drawings
Fig. 1 is a schematic front view of a landslide test device according to an embodiment 1 of the landslide test device for simulating rainfall influence and vibration according to the present invention;
fig. 2 is a schematic perspective view of a test box in a landslide test apparatus according to an embodiment 1 of the present invention for simulating rainfall influence and vibration;
fig. 3 is a schematic front view of a test box in the embodiment 1 of the landslide test device for simulating rainfall influence and vibration according to the present invention;
fig. 4 is a left side view of the test box in the embodiment 1 of the landslide test device for simulating rainfall influence and vibration according to the present invention;
fig. 5 is a schematic view of the structure of the bottom plate of the test chamber in fig. 2.
In the figure: 1-base, 10-base plate, 100-guide groove, 11-hydraulic cylinder, 12-water tank, 2-test box, 20-bottom plate, 200-soil pressure sensor mounting hole, 21-front transparent panel, 22-side panel, 220-water seepage hole, 221-water sensor mounting hole, 222-pore water pressure sensor mounting hole, 23-roller, 24-backing plate, 3-rainfall simulation device, 30-spray pipe, 300-spray head, 31-pipeline, 32-pressure stabilizing valve, 33-pump body, 34-switch valve, 4-reinforcing bracket.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
The utility model discloses a landslide test device's of rainfall simulation influence and vibration effect concrete embodiment 1, as shown in fig. 1, landslide test device of rainfall simulation influence and vibration effect includes base 1, open proof box 2 in top, locates rainfall analogue means 3 and pneumatic cylinder 11 of proof box 2 top, and proof box 2 is the long cubic of uncovered, and rainfall analogue means erects in the open area in top of proof box 2 for the side slope in to proof box 2 sprays with rainfall simulation weather. The test chamber 2 includes a rectangular bottom plate 20, two side panels 22 attached to two widthwise positions of the bottom plate 20, and a front panel and a rear panel attached to long side positions of the bottom plate 20.
The lower part of the bottom plate 20 is provided with the rollers 23, the wheel shafts of the rollers 23 are arranged along the extending direction of the wide side of the bottom plate 20, three pairs of rollers 23 are uniformly distributed at intervals in the extending direction of the long side of the bottom plate 20, each pair of rollers 23 are respectively and symmetrically arranged at the front and rear positions of the bottom plate 20, the test box 2 can be stably supported through the rollers 23 to move back and forth on the horizontal plane, continuous and stable horizontal vibration is guaranteed to be applied to the test box 2, and therefore the vibration influence of an actual earthquake on a side slope is simulated.
The front panel of proof box 2 is preceding transparent panel 21 for adopting organic glass to make, it has equidistance interval arrangement water flat line and vertical line to draw on the preceding transparent panel 21, water flat line and vertical line intersect into the coordinate net, can directly observe the process that the side slope landslide of incasement changes through preceding transparent panel 21, and reference coordinate net can make the slight deformation of side slope more showing, be convenient for record the size and the landslide face position of deflection, the convenience of observing has been improved, subsequent measurement operation has been simplified. Soil pressure sensor mounting holes 200 are uniformly distributed on a bottom plate 20 of the test box 2, corresponding soil pressure sensors are mounted in the soil pressure sensor mounting holes 200, the soil pressure sensors are used for detecting the gravity of the slope in real time, and connecting wires penetrate through the soil pressure sensor mounting holes 200 and are connected to a power supply and a data processing module outside the box.
The left and right side panels 22 of the test box 2 have the same structure, and taking the left side panel 22 as an example, the side panel 22 is provided with a water seepage hole 220, a moisture sensor mounting hole 221 and a pore water pressure sensor mounting hole 222 near the bottom, and the moisture sensor mounting hole 221 and the pore water pressure sensor mounting hole 222 form a mounting hole for mounting a measuring sensor. The seepage holes 220 are uniformly distributed in rows at intervals along the horizontal direction, the upper and lower rows of seepage holes 220 form a group, a transverse interval is reserved between the two adjacent groups of seepage holes 220, the seepage holes 220 can discharge redundant rainwater in the box out of the box, and the influence on the accuracy and the authenticity of a simulation test caused by the soaking effect on a side slope due to rainwater accumulation is avoided.
The moisture sensor mounting holes 221 and the pore water pressure sensor mounting holes 222 are respectively arranged at vertical intervals, the moisture sensor mounting holes 221 and the pore water pressure sensor mounting holes 222 are respectively and uniformly distributed at intervals along the horizontal direction, and multiple rows of sensors are arranged up and down to meet the landslide tests of slopes with different heights and different gradients. Installing a moisture sensor in the moisture sensor installation hole 221, and detecting the moisture content of the soil body in the slope and the rainfall seepage condition in real time by using the moisture sensor; the pore water pressure sensor is arranged in the pore water pressure sensor mounting hole 222, the pore water pressure sensor is used for detecting the water pressure in the inner soil body gap of the slope in real time, and the water content sensor and the pore water pressure sensor are respectively connected to a power supply and a data processing module outside the box through connecting wires. The data processing module is used for processing the detection signals of the sensor, so that the slight change of the slope can be mastered in real time, the microscopic observation is realized, and the precision and the accuracy of the test are ensured.
Be equipped with on proof box 2 and strengthen support 4, strengthen support 4 and be L shape structure, including the horizontal muscle of crossbearer at the top opening part of proof box 2 and fix on the rear panel and follow the perpendicular muscle that vertical direction extends from top to bottom. The rainfall simulation device comprises a spray pipe 30 erected on a transverse rib of a reinforcing bracket 4, a pipeline 31 communicated with the spray pipe 30, a pump body 33 installed at a water inlet of the pipeline 31, and a pressure stabilizing valve 32 and a switch valve 34 which are connected in series on the pipeline 31, wherein the pressure stabilizing valve 32 and the switch valve 34 jointly form a control valve. The shower 30 is for being the PVC pipe of horizontal extension and overhanging side panel 22 of proof box 2 left, and pipeline 31 extends and the switch-on is at the left side overhanging end of switch-on shower 30 from top to bottom outside proof box 2 case, and the interval is equipped with a plurality of mouths that spray on shower 30, and the department installs shower nozzle 300 at the shower. The pressure stabilizing valve 32 can stably control the flow, the pump body 33 starts to suck rainwater to the spraying opening through the pipeline 31 and the spraying pipe 30, and the rainwater flows out of the spray head 300 and falls to the surface of the side slope in the test box 2, so that the rainfall phenomenon in a rainy day can be simulated.
Base 1 includes base plate 10 and water tank 12, base plate 10 is the smooth concrete slab of face, adopt the concrete to make base plate 10, base 1's stability and structural strength have been ensured, last face at base plate 10 is equipped with guide way 100 along the horizontal direction extension, guide way 100 parallel interval is equipped with two and respectively corresponding with the gyro wheel 23 of front and back position, through the direction removal cooperation between gyro wheel 23 and guide way 100, the direction accuracy when having guaranteed that proof box 2 makes a round trip to vibrate has been avoided causing the interference to proof box 2 because of the vibration effect that the face unevenness produced, the simulation precision of earthquake has been improved.
A water tank 12 is fixed to the base plate 10 at the left end of the guide groove 100, the upper part of the water tank 12 is open and contains rainwater, and the pipe 31 extends downward to a position below the liquid level of the water tank 12 to ensure that the pump 33 can completely suck the rainwater in the water tank 12. Relative interval arrangement about water tank 12 and proof box 2, pneumatic cylinder 11 sets up between the relative face of the two, the flexible direction of pneumatic cylinder 11 is on a parallel with the length extending direction of guide way 100, and be fixed with backing plate 24 on the left side panel 22 of proof box 2, the ejector pin tip and the backing plate 24 of pneumatic cylinder 11 are connected, pneumatic cylinder 11 constitutes the vibration actuating mechanism who is used for push-and-pull proof box 2 with simulation horizontal vibration, the flexible action of ejector pin through control pneumatic cylinder 11, realize that drive proof box 2 carries out horizontal vibration, can guarantee the range and the adjustable speed of vibration action. Compared with a vibration test in the prior art, the method is close to the actual earthquake load effect, can simulate the acting force of an earthquake on the side slope more truly, and realizes the process of simulating landslide under the dual factors of rainfall influence and earthquake effect.
The utility model discloses a landslide test device's of rainfall simulation influence and vibration effect embodiment 2, lie in with embodiment 1's difference, in order to simplify the structure, can save and set up the guide way on the base plate of base, and polish into the planishing surface with the upper surface of base plate, the proof box that has the gyro wheel directly places the upper surface at the base plate, and the gyro wheel has realized the vibration load effect under the simulation earthquake condition along horizontal direction round trip movement on the base plate. In other embodiments, under the condition of ensuring that the driving force of the hydraulic cylinder is enough, the roller at the bottom of the test box can be replaced by a sliding block, and the direction accuracy of the test box during horizontal vibration is ensured through the guiding movement cooperation between the sliding block and the guide groove.
The utility model discloses a landslide test device's of rainfall simulation influence and vibration effect embodiment 3, lie in with embodiment 1's difference, carry out round trip horizontal migration in order to satisfy the quick drive proof box, telescopic cylinder can be replaced to the pneumatic cylinder. In other embodiments, the hydraulic cylinder may be replaced with an electric push rod or the like.
The utility model discloses a landslide test device's of rainfall simulation influence and vibration effect embodiment 4, lie in with embodiment 1's difference, for the comprehensiveness and the convenience that improve experimental observation, the proof box can be whole transparent box body of being made by organic glass, sees through the preceding curb plate of proof box promptly, posterior lateral plate, left side board, right side board and bottom plate all can observe the landslide change process of incasement side slope. In other embodiments, the plexiglass may be replaced with other transparent sheets, such as glass, transparent plastic, etc.
The utility model discloses a landslide test device's of rainfall simulation influence and vibration effect embodiment 5, lie in with embodiment 1's difference, in order to satisfy the concrete needs that different experiments were surveyd, can replace other sensors, for example soil moisture sensor with moisture sensor and pore water pressure sensor respectively.
Claims (10)
1. A landslide test device for simulating rainfall influence and vibration effect comprises a base, a test box with an open top, a rainfall simulation device and a vibration driving mechanism, wherein the rainfall simulation device and the vibration driving mechanism are arranged above the test box.
2. The landslide test device of claim 1 wherein said base has a guide slot extending in a horizontal direction of vibration, said test chamber being movably mounted in said guide slot.
3. The landslide test device capable of simulating rainfall effect and vibration action of claim 2, wherein the bottom of the test box is provided with rollers, and the rollers are movably matched with the guide grooves in a guiding mode.
4. A landslide test apparatus according to claim 2 or claim 3 in which the vibration actuator is a telescopic cylinder or hydraulic cylinder arranged with its telescopic direction along the extension of the guide slot.
5. The landslide test device for simulating rainfall influence and vibration action of claim 1, 2 or 3, wherein the test box is rectangular, and seepage holes for rainwater in the test box to be discharged outside are uniformly distributed at intervals on two opposite side panels of the test box perpendicular to the horizontal vibration direction.
6. The landslide test device for simulating rainfall influence and vibration action of claim 1, 2 or 3, wherein the test box is rectangular, and mounting holes for mounting the measuring sensors are uniformly distributed on two opposite side panels of the test box perpendicular to the horizontal vibration direction at intervals.
7. The landslide test device of claim 5, wherein soil pressure sensor mounting holes for mounting soil pressure sensors are evenly distributed on the bottom plate of the test box at intervals.
8. The landslide test device of claim 5 wherein the two sides of the test chamber parallel to the horizontal vibration direction are viewing sides, the transparent panel is disposed on the viewing sides of the test chamber, and the transparent panel is provided with a grid of coordinates.
9. The landslide test device of claim 2 or claim 3 wherein the base comprises a base plate and a water chamber, the guide slot is disposed on the base plate, the water chamber is located at an end of the guide slot of the base plate, and the vibration driving mechanism is connected to a side of the water chamber opposite to the test chamber.
10. The landslide test device of claim 9 wherein said rainfall simulator comprises a pump extending below the level of the water tank, a shower mounted above the test chamber, and a conduit connecting the pump to the shower, said conduit being in series with a control valve.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111721688A (en) * | 2020-06-24 | 2020-09-29 | 湘潭大学 | Boundary pressure seepage test device and landslide model test system |
| CN113607926A (en) * | 2021-09-30 | 2021-11-05 | 四川省公路规划勘察设计研究院有限公司 | Accumulation body test device for simulating rainfall influence and vibration effect |
| CN114783264A (en) * | 2022-06-23 | 2022-07-22 | 南通午未连海科技有限公司 | Landslide susceptibility model comparative analysis system and display device based on big data |
| CN115406812A (en) * | 2022-08-25 | 2022-11-29 | 中国矿业大学 | Monitoring experiment system for humidity field inside infrastructure under condition of simulating complex rain flood |
| CN116840450A (en) * | 2023-08-31 | 2023-10-03 | 中国矿业大学(北京) | Rainfall simulation test device and method based on geologic structure deformation process reproduction |
| CN117761290A (en) * | 2024-02-22 | 2024-03-26 | 中国地质调查局成都地质调查中心（西南地质科技创新中心） | Rainfall-induced lower rock slope collapse influence simulation test device |
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2019
- 2019-06-05 CN CN201920847013.0U patent/CN210572292U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111721688A (en) * | 2020-06-24 | 2020-09-29 | 湘潭大学 | Boundary pressure seepage test device and landslide model test system |
| CN111721688B (en) * | 2020-06-24 | 2023-03-24 | 湘潭大学 | Boundary pressure seepage test device and landslide model test system |
| CN113607926A (en) * | 2021-09-30 | 2021-11-05 | 四川省公路规划勘察设计研究院有限公司 | Accumulation body test device for simulating rainfall influence and vibration effect |
| CN114783264A (en) * | 2022-06-23 | 2022-07-22 | 南通午未连海科技有限公司 | Landslide susceptibility model comparative analysis system and display device based on big data |
| CN114783264B (en) * | 2022-06-23 | 2022-09-02 | 南通午未连海科技有限公司 | Landslide susceptibility model comparative analysis system and display device based on big data |
| CN115406812A (en) * | 2022-08-25 | 2022-11-29 | 中国矿业大学 | Monitoring experiment system for humidity field inside infrastructure under condition of simulating complex rain flood |
| CN115406812B (en) * | 2022-08-25 | 2023-10-31 | 中国矿业大学 | Infrastructure internal humidity field monitoring experiment system under simulated complex rainfall flood condition |
| CN116840450A (en) * | 2023-08-31 | 2023-10-03 | 中国矿业大学(北京) | Rainfall simulation test device and method based on geologic structure deformation process reproduction |
| CN116840450B (en) * | 2023-08-31 | 2023-11-21 | 中国矿业大学(北京) | Rainfall simulation test device and method based on geologic structure deformation process reproduction |
| CN117761290A (en) * | 2024-02-22 | 2024-03-26 | 中国地质调查局成都地质调查中心（西南地质科技创新中心） | Rainfall-induced lower rock slope collapse influence simulation test device |
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