CN113468731A - Simulation device and simulation method for collapse and landslide compound disaster evolution process - Google Patents
Simulation device and simulation method for collapse and landslide compound disaster evolution process Download PDFInfo
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- CN113468731A CN113468731A CN202110692261.4A CN202110692261A CN113468731A CN 113468731 A CN113468731 A CN 113468731A CN 202110692261 A CN202110692261 A CN 202110692261A CN 113468731 A CN113468731 A CN 113468731A
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000004088 simulation Methods 0.000 title claims abstract description 32
- 230000008569 process Effects 0.000 title claims abstract description 25
- 150000001875 compounds Chemical class 0.000 title claims abstract description 8
- 238000009825 accumulation Methods 0.000 claims abstract description 37
- 238000007790 scraping Methods 0.000 claims abstract description 7
- 239000002131 composite material Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000000565 sealant Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 239000004746 geotextile Substances 0.000 claims description 5
- 238000010146 3D printing Methods 0.000 claims description 3
- 230000001133 acceleration Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 239000004744 fabric Substances 0.000 abstract description 2
- 238000010998 test method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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- G06F30/20—Design optimisation, verification or simulation
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Abstract
The invention discloses a simulation device for a collapse and landslide compound disaster evolution process, which comprises a high-position collapse body tray, a full-angle rotary inclined plane combined structure, an accumulation groove, a manual rainfall simulation system and a camera observation system; the upper end face of the high-position collapse body tray is provided with a baffle plate, a plurality of collapse blocks are arranged on the outer side of the baffle plate, and the lower end face of the high-position collapse body tray is provided with a supporting device with adjustable height; the all-angle rotating inclined plane combined structure comprises a plurality of inclined plane blocks which are hinged with each other, geotechnical cloth used for simulating an actual slope is covered on the inclined plane blocks, a plurality of speed measuring sensors are arranged on the inclined plane blocks, a supporting device capable of adjusting the height is arranged on the lower end face of each inclined plane block, a soil-heap-shaped accumulation sliding slope body is arranged on the all-angle rotating inclined plane combined structure, and a supporting device is arranged on the outer side of the accumulation groove; the method can simulate the shoveling and scraping effect on the slope accumulation body after the high-position collapse body in the high mountain canyon region is started, and the whole process that the wrapped accumulation body slides down and finally enters the river to be accumulated.
Description
Technical Field
The invention belongs to the technical field of geotechnical engineering and disaster prevention and reduction engineering such as civil construction, engineering geology, water conservancy and hydropower, traffic and the like, and particularly relates to a simulation device and a simulation method for a collapse and landslide compound disaster evolution process.
Background
A high-position collapse body, namely a landslide of a medium-lower accumulation body, is a compound disaster widely distributed in high mountain canyon regions in southwest of China. In the southwest area of China, earthquake activities are frequent, extreme weather such as heavy rain and long rain is common, rock and soil bodies are easy to be unstable under the action of external factors such as earthquake and rainfall, and the safety of basic facilities and people property is seriously threatened.
At present, means for researching the collapse-landslide action process mainly comprise a numerical value algorithm, an empirical formula method and a physical model test method, wherein the physical model test method is the most intuitive and reliable method. However, at present, the physical model test devices and test methods for researching collapse and landslide disasters are few, and have two defects:
most of the current researches adopt a simple inclined plane (steel plate) as a collapse body migration slope surface, and the slope surface is not consistent with the complex terrain of an actual slope surface;
secondly, most independent researches are carried out on landslide or collapsed body disasters, and in fact in high-altitude valley areas, after a high-altitude collapsed body is started, a shoveling and scraping effect is often generated on a slope accumulated body, and the high-altitude collapsed body finally wraps the accumulated body to slide down and finally enters the river to be accumulated, so that the landslide or collapsed body disaster is a typical composite disaster.
Disclosure of Invention
Aiming at the problems, the invention aims to solve the problems that most of the existing physical model test devices and test methods for researching collapse and landslide disasters adopt simple inclined planes (steel plates) as the migration slopes of collapse bodies, do not conform to the complex terrains of the actual slope surfaces, and do not consider the scraping effect on slope accumulation bodies.
To achieve the above object, the present invention relates to: a simulation device for a collapse and landslide compound disaster evolution process comprises a high-position collapse body tray, a full-angle rotary inclined plane combined structure, an accumulation groove, a manual rainfall simulation system and a camera observation system;
the high-position collapse body tray, the full-angle rotating inclined plane combined structure and the accumulation groove are hinged with each other; the artificial rainfall simulation system is arranged above the high-position collapse body tray, the full-angle rotating inclined plane combined structure and the accumulation groove; the camera shooting observation system is positioned on one side of the full-angle rotating inclined plane combined structure, the upper end face of the high-position collapse body tray is provided with a baffle plate, the outer side of the baffle plate is provided with a plurality of collapse blocks, and the lower end face of the high-position collapse body tray is provided with a supporting device with adjustable height; the full-angle rotating inclined plane combined structure comprises a plurality of inclined plane blocks which are hinged to each other, geotechnical cloth used for simulating actual slope is covered on the inclined plane blocks which are hinged to each other, a plurality of speed measuring sensors are arranged, a supporting device with adjustable height is also arranged on the lower end face of each inclined plane block, a soil pile-shaped pile sliding slope body is arranged on the upper side face of the lower portion of the full-angle rotating inclined plane combined structure, and a supporting device with adjustable pile groove angles is also arranged on the outer side of the pile groove.
Furthermore, the supporting device with adjustable height is an oil cylinder or an air cylinder.
Further, the accumulation groove is of a U-shaped or flat-bottom V-shaped structure.
Further, the hinge joint between the high-position collapse body tray and the accumulation groove and the hinge joint between the inclined plane blocks are all provided with sealant for sealing treatment.
Furthermore, the artificial rainfall simulation system comprises a water supply unit, a spraying unit and a control unit, and the rainfall intensity of the spray head can be adjusted by adjusting the total rainfall, the rainfall time and the water supply pressure.
The simulation method of the simulation device for the collapse and landslide composite disaster evolution process comprises the following steps:
step 2, preparing a collapsed body and a piled landslide body respectively by adopting a 3D printing technology according to the geometric shapes of the collapsed body and the landslide body;
and 6, repeating the steps 1-5, and changing the arrangement mode of each group of inclined planes, such as inclination angle and elevation, so that the actual topographic features of the complex slope can be considered.
Furthermore, the material of the stacking landslide body is a soil-rock mixture.
In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:
(1) the high-position collapsed body tray for the simulation device for the collapse and landslide composite disaster evolution process can simulate the shoveling and scraping effect on a slope accumulated body after the high-position collapsed body is started in a high mountain canyon region, and finally wraps the accumulated body to slide down and finally enter the river to be accumulated in the whole process.
(2) The simulation device for the collapse and landslide compound disaster evolution process can realize the simulation of the complex fluctuation characteristics of the actual slope and reflect the landform characteristics of V, U type valley zones through the linkage of the river channel and the multistage rotatable slopes on the two sides.
(3) The simulation device for the composite disaster evolution process of collapse and landslide can simultaneously consider the environmental loads such as earthquake, rainfall and the like, and is respectively realized through a high-position collapse body tray and an artificial rainfall simulation system.
Drawings
FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Referring to fig. 1, a simulation apparatus for a composite disaster evolution process of collapse and landslide includes a high-level collapse body tray 1, a full-angle rotation inclined plane combination structure 2, an accumulation tank 3, an artificial rainfall simulation system 4 and a camera observation system 5;
the high-position collapse body tray 1, the full-angle rotary inclined plane combined structure 2 and the accumulation groove 3 are hinged with each other; the artificial rainfall simulation system 4 is arranged above the high-position collapse body tray 1, the full-angle rotating inclined plane combined structure 2 and the accumulation groove 3; the camera shooting observation system 5 is positioned at one side of the full-angle rotating inclined plane combined structure 2, a baffle plate 11 is arranged on the upper end surface of the high-position collapse body tray 1, a plurality of collapse blocks are arranged on the outer side of the baffle plate 11, and a supporting device (an oil cylinder or an air cylinder) with adjustable height is arranged on the lower end surface of the high-position collapse body tray 1; the full-angle rotating inclined plane combined structure 2 comprises a plurality of mutually hinged inclined plane blocks, the plurality of mutually hinged inclined plane blocks are covered with geotextile used for simulating actual slope and are provided with a plurality of speed measuring sensors, the lower end face of each inclined plane block is also provided with a supporting device with adjustable height, the upper side face of the lower part of the full-angle rotating inclined plane combined structure 2 is provided with a soil-heap-shaped stacking landslide body 6 (the material of the stacking landslide body is a soil-stone mixture), and the outer side of the stacking groove 3 is also provided with a supporting device capable of adjusting the angle of the stacking groove.
And sealant is arranged at the hinged part between the high-position collapse body tray 1, the full-angle rotation inclined plane combined structure 2 and the accumulation groove 3 and the hinged part between the inclined plane blocks for sealing treatment.
The artificial rainfall simulation system 4 comprises a water supply unit, a spraying unit and a control unit, and the rainfall intensity of the spray head can be adjusted by adjusting the total rainfall, the rainfall time and the water supply pressure.
The simulation method of the simulation device for the collapse and landslide composite disaster evolution process comprises the following steps:
step 2, preparing a collapsed body and a piled landslide body respectively by adopting a 3D printing technology according to the geometric shapes of the collapsed body and the landslide body;
and 6, repeating the steps 1-5, and changing the arrangement mode of each group of inclined planes, such as inclination angle and elevation, so that the actual topographic features of the complex slope can be considered.
Aiming at typical V (U) type valley landforms in high mountain canyon zones, a rotatable inclined plane with detachable hinges is designed, complex actual slope landform characteristics are reproduced by combining the rotatable inclined planes, a high-position collapse body is placed on a tray, collapse starting is realized by loading the tray, and the tray finally falls into a stacking groove to be stacked into a dam after being moved by a multi-level slope. The accumulation groove is connected with the lower end inclined plane through a hinge connector, and the processes of starting and moving of the collapse body, interaction of the collapse body and the landslide body, accumulation and the like are tracked in real time through a high-speed camera.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. The utility model provides a collapse, compound calamity evolution process's analogue means of landslide which characterized in that:
the device comprises a high-position collapse body tray (1), a full-angle rotating inclined plane combined structure (2), a stacking groove (3), a manual rainfall simulation system (4) and a camera observation system (5);
the high-position collapse body tray (1), the full-angle rotating inclined plane combined structure (2) and the accumulation groove (3) are hinged with each other; the artificial rainfall simulation system (4) is arranged above the high-position collapse body tray (1), the full-angle rotating inclined plane combined structure (2) and the accumulation groove (3); the camera shooting observation system (5) is positioned on one side of the full-angle rotating inclined plane combined structure (2), a baffle (11) is arranged on the upper end face of the high-position collapse body tray (1), a plurality of collapse blocks are arranged on the outer side of the baffle (11), and a supporting device which can adjust the height and is hinged with the high-position collapse body tray is arranged on the lower end face of the high-position collapse body tray (1); the all-angle-rotation inclined plane combined structure (2) comprises a plurality of mutually-hinged inclined plane blocks, a plurality of mutually-hinged inclined plane blocks are covered with geotextile used for simulating actual slope and are provided with a plurality of speed measuring sensors, the lower end face of each inclined plane block is also provided with a supporting device with adjustable height and hinged with the inclined plane block, the upper side face of the lower part of the all-angle-rotation inclined plane combined structure (2) is provided with a soil-pile-shaped pile-up landslide body (6), and the outer side of the pile groove (3) is also provided with a supporting device capable of adjusting the angle of the pile groove.
2. The apparatus for simulating the evolution process of a collapse and landslide composite disaster according to claim 1, wherein the height-adjustable supporting means is an oil cylinder or an air cylinder.
3. The apparatus for simulating the evolution process of a collapse and landslide composite disaster according to claim 1, wherein the accumulation groove is of a U-shaped or flat-bottom V-shaped structure.
4. The apparatus for simulating the evolution process of a collapse and landslide composite disaster according to claim 1, wherein the hinge joint between the high-level collapse body tray (1), the full-angle rotation inclined plane combined structure (2) and the accumulation groove (3) and the hinge joint between the inclined plane blocks are all provided with sealant for sealing treatment.
5. The apparatus for simulating the evolution process of a collapse and landslide composite disaster according to claim 1, wherein the artificial rainfall simulation system (4) comprises a water supply unit, a spraying unit and a control unit, and the rainfall intensity of the spray head can be adjusted by adjusting the total rainfall, the rainfall time and the water supply pressure.
6. The simulation method of the simulation apparatus for the evolution process of the collapse and landslide composite disaster according to any one of claims 1 to 5, comprising the steps of:
step 1, fixing the inclined plane components through supports, assembling the inclined plane components according to the actual slope shape through hinge connectors, and fixing a layer of coarse geotextile on the inclined plane; the accumulation groove is connected with the inclined plane through a hinge and is sealed through sealant;
step 2, preparing a collapsed body and a piled landslide body respectively by adopting a 3D printing technology according to the geometric shapes of the collapsed body and the landslide body;
step 3, adjusting the rainfall intensity of the spray head by adjusting the total rainfall, the rainfall time and the water supply pressure;
step 4, placing the collapsed body in an acceleration tray, loading the tray, enabling the collapsed body to obtain an initial speed, enabling the collapsed body to slide downwards to collide with a slope accumulation body, carrying a stacking sliding body (6) after scraping, and finally stacking the stacking sliding body in a stacking groove to form a dam;
step 5, arranging high-speed cameras around the model box, arranging a speed measuring sensor at the link of the toe accumulation groove and the inclined plane, and tracking the starting, the speed in the motion process and the final accumulation height of the collapse body and the landslide body in real time;
and 6, repeating the steps 1-5, and changing the arrangement mode of each group of inclined planes, such as inclination angle and elevation, so that the actual topographic features of the complex slope can be considered.
7. The simulation method of the simulation device of the evolution process of the collapse and landslide composite disaster according to claim 1, wherein the material of the piled landslide body (6) is a soil-rock mixture.
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| CN202110692261.4A CN113468731A (en) | 2021-06-22 | 2021-06-22 | Simulation device and simulation method for collapse and landslide compound disaster evolution process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754736A (en) * | 2022-03-31 | 2022-07-15 | 中国地质科学院地质力学研究所 | Multidimensional full-scale high-position landslide motion intelligent simulation system and method |
| CN116068148A (en) * | 2023-03-21 | 2023-05-05 | 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） | Landslide accumulation body forming debris flow movement process simulation device under rainfall condition |
| CN117074645A (en) * | 2023-07-05 | 2023-11-17 | 南京工业大学 | Adjustable landslide scraping accumulation simulation test device and test method |
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| CN117074645A (en) * | 2023-07-05 | 2023-11-17 | 南京工业大学 | Adjustable landslide scraping accumulation simulation test device and test method |
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Application publication date: 20211001 |