CN111948379A - Ground crack field damage simulation device and method considering underground water - Google Patents
Ground crack field damage simulation device and method considering underground water Download PDFInfo
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Abstract
The invention provides a ground crack field hazard simulation device and method considering underground water, which comprises a test box, wherein the test box comprises a box body, and the box body adopts a rectangular box body structure with an opening at the upper part; the ground crack interface filling body is obliquely arranged in the box body, the box body is divided into an upper disc area and a lower disc area by the ground crack interface filling body, and simulated soil layers are arranged in the upper disc area and the lower disc area; the first water supply pipe is arranged at the bottom of the upper disc area, and the second water supply pipe is arranged at the bottom of the lower disc area; two ends of the box body are respectively provided with a water inlet system, and the two water inlet systems are respectively communicated with a first water supply pipe and a second water supply pipe; the plurality of drain pipes are uniformly arranged at the bottom of the periphery of the box body; the simulated soil layers are filled on two sides of the ground crack interface filling body, and the simulated soil layers and the ground crack interface filling body are combined to form a simulated ground crack field; through setting up water intake system and water supply and drainage pipe, realize the regulation to simulating ground crack place middle water level, effectively simulate ground crack place harm that groundwater changed.
Description
Technical Field
The invention belongs to the technical field of geological disaster analysis, and particularly relates to a ground crack field damage simulation device and method considering underground water.
Background
The ground fissure is the discontinuous or fault-breaking phenomenon of a rock-soil medium which develops on the surface layer of the earth crust and is caused by the internal and external force action, the human activity and other factors; the direct or indirect loss of ground cracks as a geological disaster of near-surface soil layer rupture closely related to pumped ground settlement, basement construction and active construction is billions of yuan.
At present, a lot of scholars at home and abroad have carried out a great deal of research on various aspects such as the generation mechanism, the activity characteristics, the disaster type, the treatment measures and the like of ground cracks and have obtained abundant results; the ground fissure simulation is carried out by adopting an indoor test, the result reliability is higher, the monitoring items are diversified, and the corresponding mechanism can be better disclosed; therefore, despite the high cost, the simulation of the ground crack disaster by using the model test is still the main means of the majority of researchers.
Along with the construction of various projects at present, the project construction of a ground crack field is difficult to avoid the interference of underground water, and the conventional ground crack field disaster simulation device does not consider the influence of the underground water and cannot control the change of the underground water level; therefore, in order to research the harmful influence of underground water level change on the ground crack field, the effect of underground water is considered more fully, the simulation and control problems of the underground water level change of the upper tray and the lower tray of the ground crack field in the test are solved, the advantages of the physical model test are brought into full play, and more effective guidance is provided for actual engineering construction.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a ground crack field damage simulation device and a ground crack field damage simulation method considering underground water, and aims to solve the technical problems that the ground crack field damage simulation device does not consider the influence of the underground water and cannot control the change of the underground water in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a ground crack field hazard simulation device considering underground water, which comprises a test box, a ground crack interface filling body and a water inlet system, wherein the test box is provided with a water inlet pipe; the test box comprises a box body, a first water supply pipe, a second water supply pipe and a plurality of water discharge pipes, wherein the box body adopts a rectangular box body structure with an opening at the upper part; the ground fracture interface filling body is obliquely arranged in the box body, the box body is divided into an upper disc area and a lower disc area by the ground fracture interface filling body, and simulated soil layers are arranged in the upper disc area and the lower disc area;
the first water supply pipe is arranged at the bottom of the upper disc area, and the second water supply pipe is arranged at the bottom of the lower disc area; two ends of the box body are respectively provided with a water inlet system, wherein one water inlet system is communicated with the first water supply pipe, and the other water inlet system is communicated with the second water supply pipe; a plurality of drain pipes evenly set up in the bottom all around of box, the one end of drain pipe and the inside intercommunication of box, the other end and external intercommunication.
Furthermore, the test box still includes two water level observation pipes, and two water level observation pipes set up respectively at the both ends of box, are used for observing the water level that upper disc district filled the soil layer and lower disc district filled the soil layer respectively.
Further, the first water supply pipe or the second water supply pipe comprises a main water supply pipe and a plurality of branch water supply pipes; the water supply main pipe is horizontally arranged at the end part of the box body, one end of the water supply main pipe is communicated with a water outlet of the water inlet system, and the other end of the water supply main pipe is communicated with a water inlet of the water supply branch pipe; a plurality of water supply branch pipes are uniformly distributed at the bottom of the upper disc area or the lower disc area, and a plurality of water outlet holes are uniformly formed in the water supply branch pipes.
Furthermore, the water supply branch pipes adopt U-shaped pipes, and a plurality of U-shaped pipes are uniformly arranged on the water supply main pipe; both ends of the U-shaped pipe are communicated with the water supply branch pipe, and a plurality of water outlet holes are uniformly formed in the U-shaped pipe; the length of the U-shaped pipe is matched with that of the upper disc area or the lower disc area.
Furthermore, the device also comprises an earth moving system, wherein the earth moving system is arranged on the box body; the soil transporting system comprises a propeller strut, a cross beam and a hoisting machine, wherein the propeller strut is fixedly arranged on the box body, the cross beam is horizontally arranged on the propeller strut, the cross beam is arranged along the length direction of the box body, and the hoisting machine is slidably arranged on the cross beam.
Furthermore, the included angle between the ground fracture interface filling body and the horizontal plane is 70-80 degrees.
Furthermore, the water inlet system adopts a liftable water tank, the liftable water tank comprises a water storage tank and a lifting frame, the lifting frame is fixedly arranged at the end part of the tank body, the water storage tank is arranged on the lifting frame, and a water outlet of the water storage tank is communicated with the first water supply pipe or the second water supply pipe.
Furthermore, the simulated soil layer in the upper disc area or the lower disc area is formed by soil body layered filling, and the layered height of the simulated soil layer is 10-15 cm.
Furthermore, the ground crack interface filling body adopts fine sand or silty fine sand.
The invention also provides a ground crack site hazard simulation method considering underground water, which comprises the following steps:
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a ground crack field hazard simulation device considering groundwater.A ground crack interface filling body is obliquely arranged in a test box, simulated soil layers are filled on two sides of the ground crack interface filling body, and the simulated soil layers and the ground crack interface filling body are combined to form a simulated ground crack field; the simulated ground crack field in the box body is supplied with water by arranging the water inlet system and the water supply pipe, the water level in the simulated ground crack field is adjusted by arranging the water discharge pipe, the ground crack field danger caused by underground water change is effectively simulated, and the advantages of a physical model test are fully exerted; simple structure, easy and simple to handle, application scope is wide, provides effectual instruction for the actual engineering construction.
Furthermore, the water level observation pipes are arranged at the two ends of the box body, so that the water levels in the upper disc area filling soil layer and the lower disc area filling soil layer can be observed in real time through the water level observation pipes, and the accuracy of a simulation test is ensured.
Furthermore, through the bottom in the box set up U type delivery pipe, realize the even supply of inside soil body groundwater, the U type delivery pipe of upper and lower dish both sides does not communicate and can dismantle, conveniently adjusts the horizontal spread of ground crack interface.
Furthermore, the soil transporting system is arranged on the box body, so that the labor intensity of the soil filling process is reduced, and the operation is simple and convenient.
Furthermore, an included angle between the ground fracture interface filling body and the horizontal plane is set to be 70-80 degrees, and the consistent inclination angle with the field actual ground fracture is ensured; the invention can also adjust the included angle between the ground crack interface filling body and the horizontal plane according to the simulation requirement, so that the simulation result is more real.
Further, but water inlet system adopts lifting water tank, installs the storage water tank on the crane, through the height of adjusting the storage water tank, through adjusting the vertical height of box both ends storage water tank on the crane, the soil body ground water level difference of upper and lower dish in effective control ground crack interface both sides, and then the research of realizing the ground crack place harm under the groundwater change condition, the simulation effect authenticity is higher, realizes the simulation to different groundwater conditions, and application scope is wide.
Furthermore, the simulated soil layer is filled by soil in a layered mode, so that the filling effect of the ground crack interface is consistent with the actual filling effect, and the accuracy of the simulation test result is effectively guaranteed.
Furthermore, the ground crack interface filling body adopts fine sand or silty sand which is used as a waterproof material, and the properties of the fine sand or silty sand are approximately consistent with those of the field ground crack filling body, so that the ground crack simulation is closer to the reality.
The invention also provides a ground crack field damage simulation method considering groundwater, which can effectively simulate ground crack field damage considering the influence of groundwater level change, can provide guidance for engineering construction, and has simple operation process and higher accuracy of simulation test results.
In conclusion, the ground crack field damage simulation device and method considering underground water optimize the simulation of ground crack field ground and lower disc water level control by arranging the water inlet and outlet system in the box body; the water level height in the soil body is controlled by the water inlet system and the water supply and drainage pipe in the box body together; by arranging the liftable water tanks, the difference of the stratum water levels in the upper disc and the lower disc on two sides of the ground fracture interface is controlled by adjusting the height of the water tanks on two sides, and the harmful influence on the ground fracture field under the coupling action of external load and underground water is researched; the ground crack field damage simulation device and method considering underground water can be used for carrying out ground crack simulation indoor tests, fully considers the influence of underground water on the ground crack field, exerts the advantages of physical model tests, and has high benefit and wide application prospect in the field of geological disaster scientific research.
Drawings
FIG. 1 is a schematic view of the overall structure of a ground fracture site hazard simulation device according to the present invention;
FIG. 2 is a schematic structural diagram of a test box in the ground fracture site hazard simulation device according to the present invention;
FIG. 3 is a schematic diagram of the arrangement of water inlet pipes in the ground fracture site hazard simulation apparatus according to the present invention;
FIG. 4 is a schematic structural diagram of a lifting water tank in the ground fracture site hazard simulation device according to the present invention;
fig. 5 is a schematic diagram of a crane and a beam in the ground fracture site hazard simulation apparatus according to the present invention.
The method comprises the following steps of 1, a test box, 2, a ground crack interface filling body, 3, a water inlet system and 4, a soil transporting system; 11 a box body, 12 a first water supply pipe, 13 a second water supply pipe, 14 a water discharge pipe and 15 a water level observation pipe; 31 a water storage tank and 32 a lifting frame; 41A-bracket, 42 crossbeam, 43 crane; 101 a main water supply pipe and 102 a branch water supply pipe.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention more apparent, the following embodiments further describe the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in the attached drawings 1-5, the invention provides a ground crack site hazard simulation device considering underground water, which comprises a test box 1, a ground crack interface filling body 2, a water inlet system 3 and an earth moving system 4; the test box 1 comprises a box body 11, a first water supply pipe 12, a second water supply pipe 13, a plurality of drain pipes 14 and two water level observation pipes 15; the box body 11 is of a rectangular box body structure with an opening at the upper part, the ground fracture interface filling body 2 is obliquely arranged in the box body 11, and the inclination angle of the ground fracture interface filling body 2 is the same as the inclination angle of the ground fracture interface in the actual ground fracture site; the ground crack interface filler 2 divides the space in the box body 11 into an upper disc area and a lower disc area, wherein the upper disc area is filled with an upper disc area simulation soil layer, and the lower disc area is filled with a lower disc area simulation soil layer.
A first water supply pipe 12 is provided at the bottom of the upper panel, and a second water supply pipe 13 is provided at the bottom of the lower panel; the two ends of the box body 11 are respectively provided with a water inlet system 3, wherein one water inlet system is communicated with a first water supply pipe 12, and the other water inlet system is communicated with a second water supply pipe 13; a plurality of drain pipes 14 evenly set up in the bottom all around of box 11, and the one end of drain pipe 14 communicates with the inside of box 11, and the other end communicates with the external world.
Two water level observation pipes 15 are respectively arranged at the bottoms of the two ends of the box body 11, wherein one water level observation pipe 15 is used for observing the water level in the upper disc area filling soil layer, and the other water level observation pipe 15 is used for observing the water level in the lower disc area filling soil layer.
The earth moving system 4 is arranged on the box body 11, the earth moving system 4 comprises a propeller strut 41, a cross beam 42 and a lifting machine 43, the propeller strut 41 is fixedly arranged on the box body 11, and the transverse beam 42 is horizontally arranged on the propeller strut 41; the cross beam 42 is arranged along the length direction of the box body 11, and the length of the cross beam 42 is matched with that of the box body 11; the crane 43 is slidably mounted on the cross beam 42, and the crane 43 is used for lifting the soil body and the external load loading device.
The upper disc area simulation soil layer or the lower disc area simulation soil layer is formed by soil body layered filling, and the layered height of the upper disc area simulation soil layer or the lower disc area simulation soil layer is 10-15 cm; the ground crack interface filling body 2 is made of fine sand or silty sand, and the fine sand or silty sand is filled in a layered mode; the included angle between the ground fracture interface filler 2 and the horizontal plane is 70-80 degrees.
The first water supply pipe 12 and the second water supply pipe 13 have the same structure, and the first water supply pipe 12 or the second water supply pipe 13 includes a main water supply pipe 101 and a plurality of branch water supply pipes 102; the main water supply pipe 101 is horizontally arranged at the end part of the box body 11, one end of the main water supply pipe 101 is communicated with a water outlet of the water inlet system 3, and the other end of the main water supply pipe 101 is communicated with a water inlet of the branch water supply pipe 102; the water supply branch pipes 102 are uniformly distributed at the bottom of the upper disc area or the lower disc area, and the water supply branch pipes 102 are uniformly provided with a plurality of water outlet holes.
The water supply branch pipe 102 adopts a U-shaped pipe, and a plurality of U-shaped pipes are uniformly arranged on the water supply main pipe 101; two ends of the U-shaped pipe are communicated with the water supply branch pipe 102, and a plurality of water outlet holes are uniformly formed in the U-shaped pipe; the length of the U-shaped pipe is matched with that of the upper disc area or the lower disc area.
The water inlet system 3 adopts a liftable water tank, the liftable water tank comprises a water storage tank 31 and a lifting frame 32, the lifting frame 32 is fixedly arranged at the end part of the box body 11, the water storage tank 31 is arranged on the lifting frame 32, and the water outlet of the water storage tank 31 is communicated with the first water supply pipe 12 or the second water supply pipe 13.
The invention also provides a ground crack site hazard simulation method considering underground water, which comprises the following steps:
Examples
The embodiment provides a ground crack site hazard simulation device considering underground water, which comprises a test box, a ground crack interface filling body, a water inlet system and a soil transporting system; the test box comprises a box body, a first water supply pipe, a second water supply pipe, a plurality of drain pipes and two water level observation pipes; the box body is of a rectangular box body structure with an opening at the upper part, the box body is composed of a steel structure frame, and the top of the steel structure frame is open; the ground fracture interface filling body is obliquely arranged in the box body, and the inclination angle of the ground fracture interface filling body is the same as the inclination angle of the ground fracture interface in the actual ground fracture field; the ground crack interface filling body divides the space in the box body into an upper disc area and a lower disc area, wherein the upper disc area is filled with an upper disc area simulation soil layer, and the lower disc area is filled with a lower disc area simulation soil layer.
The first water supply pipe is arranged at the bottom of the upper disc area, and the second water supply pipe is arranged at the bottom of the lower disc area; two ends of the box body are respectively provided with a water inlet system, wherein one water inlet system is communicated with the first water supply pipe, and the other water inlet system is communicated with the second water supply pipe; a plurality of drain pipes evenly set up in the bottom all around of box, the one end of drain pipe and the inside intercommunication of box, the other end and external intercommunication.
Two water level observation pipes are respectively arranged at the bottoms of the two ends of the box body, one of the water level observation pipes is used for observing the water level in the upper disc area filling soil layer, and the other water level observation pipe is used for observing the water level in the lower disc area filling soil layer.
The first water supply pipe and the second water supply pipe have the same structure, and the first water supply pipe or the second water supply pipe comprises a main water supply pipe and a plurality of branch water supply pipes; the water supply main pipe is horizontally arranged at the end part of the box body, one end of the water supply main pipe is communicated with a water outlet of the water inlet system, and the other end of the water supply main pipe is communicated with a water inlet of the water supply branch pipe; the water supply branch pipes are uniformly distributed at the bottom of the upper disc area or the lower disc area, and the water supply branch pipes are uniformly provided with a plurality of water outlet holes.
The water supply branch pipes adopt U-shaped pipes, and a plurality of U-shaped pipes are uniformly arranged on the water supply main pipe; both ends of the U-shaped pipe are communicated with the water supply branch pipe, and a plurality of water outlet holes are uniformly formed in the U-shaped pipe; the length of the U-shaped pipe is matched with that of the upper disc area or the lower disc area.
The water inlet system adopts a liftable water tank, the liftable water tank comprises a water storage tank and a lifting frame, the lifting frame is fixedly arranged at the end part of the tank body, the water storage tank is arranged on the lifting frame, and a water outlet of the water storage tank is communicated with a first water supply pipe or a second water supply pipe; through the up-and-down movement of the water storage tank on the lifting frame, water in the water storage tank enters the upper disc area simulation soil layer or the lower disc area simulation soil layer through the main water supply pipe and the branch water supply pipe, and the effective control of the water level change inside the upper disc area or the lower disc area simulation soil layer is realized.
In this embodiment, the water supply system, the first water supply pipe, the second water supply pipe and the drain pipe are combined to form a water level control system, and the water level control system can control the height of the water level in the upper disc area simulation soil layer or the lower disc area simulation soil layer together according to the synergistic effect of the liftable water tank and the first water supply pipe, the second water supply pipe and the drain pipe in the box body; meanwhile, the difference of the underground water levels of the upper tray and the lower tray on two sides of the ground crack interface can be controlled by adjusting the height of the water tank, and the danger of a ground crack field under the condition of underground water level change is researched.
The soil transporting system is arranged on the box body and comprises a propeller strut, a cross beam and a lifting machine, wherein the propeller strut is fixedly arranged on the box body and transversely and horizontally arranged on the propeller strut; the cross beam is arranged along the length direction of the box body, and the length of the cross beam is matched with that of the box body; the lifting machine is slidably arranged on the cross beam and is used for lifting a soil body and an external load loading device; by arranging the earth moving system, the material in the test can be conveniently conveyed to a designated position; preferably, the cross beam is a steel structure cross beam.
The upper disc area simulation soil layer or the lower disc area simulation soil layer is formed by soil body layered filling, and the layered height of the upper disc area simulation soil layer or the lower disc area simulation soil layer is 10-15 cm; in order to ensure that the filling effect of the ground crack interface is consistent with the actual situation, the thickness of each layer is ensured not to be too large when the stratum is filled in a layered mode, the loose paving thickness of each layer of soil is not more than 15cm, the thickness after manual tamping treatment is about 10cm, and corresponding ground crack interface treatment is carried out when each layer of soil is filled; specifically, a wood board with the thickness of about 2cm is adopted to reserve the position for setting a ground crack in advance, and the thickness of the soil body loosely paved on two sides of the wood board after tamping treatment is about 10 cm; filling a layer of soil, uniformly filling gaps formed after the wood board is drawn out by fine sand or fine powder sand to form a ground crack interface, and filling the gaps layer by layer until the ground crack interface is designed to be high; the included angle between the ground crack interface filling body and the horizontal plane is 70-80 degrees, and the ground crack interface filling body is used as a soft geological interface of artificial filling; the upper disc area simulation soil layer or the lower disc area simulation soil layer filling process is characterized in that sensors are arranged in the simulation soil layer, and random sampling tests are carried out when filling of each simulation soil layer is completed, so that the simulation soil layer is similar to the stratum of the original field.
The embodiment also provides a ground crack site hazard simulation method considering underground water, which comprises the following steps:
the method comprises the following steps that 1, a ground crack template is obliquely arranged in a box body, a soil body prepared in advance is transported into the box body through a soil transporting system, manual layered filling is carried out on two sides of the ground crack template, and an upper panel area simulation soil layer and a lower panel area simulation soil layer are respectively formed on two sides of the ground crack template; sensor arrangement is carried out simultaneously in the layered filling process, random sampling test is carried out when each layer of filling is finished, and the situation that the layers of filling are similar to the stratum of the original field is guaranteed; the ground crack template is a 2-3cm thick wood board, and the included angle between the wood board and the horizontal plane is 70-80 degrees so as to simulate the actual ground crack inclination angle; the height of the layered filling is 10-15 cm.
and 4, after the underground water level in the upper plate area simulation soil layer and the lower plate area simulation soil layer to be set is stable, applying external load to the upper plate area simulation soil layer or the lower plate area simulation soil layer according to loading conditions required by test design, and simulating and considering the influence of underground water level change on ground crack sites.
And 5, in the loading process, monitoring and measuring by using sensors which are designed and distributed on the inner side and the outer side of the upper disc area simulation soil layer or the lower disc area simulation soil layer, and analyzing the deformation and damage conditions of the ground crack field under the action of external load, the influence ranges of the upper disc and the lower disc, the response characteristics of the stratum soil body and the like when the underground water level changes.
The invention relates to a ground crack field simulation hazard device considering underground water and a simulation method thereof.A water inlet system, a water supply pipe and a water discharge pipe are arranged to control the underground water level in a simulation soil layer in a box body; the vertical height of water storage tanks at the two ends of the box body on the lifting frame is adjusted to control the difference of the soil body underground water levels of the upper and lower trays at the two sides of the ground crack interface, so that the simulation effect of ground crack field damage considering underground water level change is achieved; by combining corresponding monitoring means, the damage influence of underground water level change on the ground crack field can be researched more scientifically, and the required dynamic and static load application can be prepared according to the design of the test to research the damage influence on the ground crack field under the coupling action of external load and underground water; the invention has the advantages of simple operation, various measurements, wide application range and strong expandability.
The ground crack field damage simulation device and method considering underground water optimize the simulation of ground and lower disk water level control of the ground crack field, jointly control the water level height in a soil body through the water inlet pipe and the water outlet pipe in the water inlet system and the box body, study the damage influence on the ground crack field under the coupling action of external load and the underground water, and have higher benefit and wide application prospect in the field of geological disaster research.
The above-described embodiment is only one of the embodiments that can implement the technical solution of the present invention, and the scope of the present invention is not limited by the embodiment, but includes any variations, substitutions and other embodiments that can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed.
Claims (10)
1. A ground crack site hazard simulation device considering underground water is characterized by comprising a test box (1), a ground crack interface filling body (2) and a water inlet system (3); the test box (1) comprises a box body (11), a first water supply pipe (12), a second water supply pipe (13) and a plurality of drain pipes (14), wherein the box body (11) adopts a rectangular box body structure with an opening at the upper part; the ground crack interface filling body (2) is obliquely arranged in the box body (11), the box body (11) is divided into an upper disc area and a lower disc area by the ground crack interface filling body (2), and simulated soil layers are arranged in the upper disc area and the lower disc area;
a first water supply pipe (12) is arranged at the bottom of the upper disc area, and a second water supply pipe (13) is arranged at the bottom of the lower disc area; two ends of the box body (11) are respectively provided with a water inlet system (3), one water inlet system is communicated with the first water supply pipe (12), and the other water inlet system is communicated with the second water supply pipe (13); a plurality of drain pipes (14) are uniformly arranged at the bottom of the periphery of the box body (11), one ends of the drain pipes (14) are communicated with the inside of the box body (11), and the other ends of the drain pipes are communicated with the outside.
2. The ground fissure site hazard simulation device considering groundwater according to claim 1, wherein the test box (1) further comprises two water level observation pipes (15), the two water level observation pipes (15) are respectively arranged at two ends of the box body (11) and are respectively used for observing the water levels of the upper disc area filled soil layer and the lower disc area filled soil layer.
3. The ground fissure site hazard simulation device considering groundwater as claimed in claim 1, wherein the first water supply pipe (12) or the second water supply pipe (13) comprises a main water supply pipe (101) and a plurality of branch water supply pipes (102); the water supply main pipe (101) is horizontally arranged at the end part of the box body (11), one end of the water supply main pipe (101) is communicated with a water outlet of the water inlet system (3), and the other end of the water supply main pipe is communicated with a water inlet of the water supply branch pipe (102); the water supply branch pipes (102) are uniformly distributed at the bottom of the upper disc area or the lower disc area, and the water supply branch pipes (102) are uniformly provided with a plurality of water outlet holes.
4. The ground fissure site hazard simulation device considering groundwater as claimed in claim 3, wherein the water supply branch pipe (102) is a U-shaped pipe, and a plurality of U-shaped pipes are uniformly arranged on the water supply main pipe (101); both ends of the U-shaped pipe are communicated with the water supply branch pipe (102), and a plurality of water outlet holes are uniformly formed in the U-shaped pipe; the length of the U-shaped pipe is matched with that of the upper disc area or the lower disc area.
5. The underground water-based ground fissure site hazard simulation device according to claim 1, further comprising an earth-moving system (4), wherein the earth-moving system (4) is mounted on the box body (11); the earth moving system (4) comprises a propeller strut (41), a cross beam (42) and a lifting machine (43), wherein the propeller strut (41) is fixedly arranged on the box body (11), the cross beam (42) is horizontally arranged on the propeller strut (41), the cross beam (42) is arranged along the length direction of the box body (11), and the lifting machine (43) is slidably arranged on the cross beam (42).
6. A ground fracture site damage simulation device considering groundwater according to claim 1, wherein an angle between the ground fracture interface filler (2) and a horizontal plane is 70-80 °.
7. The ground crack site hazard simulation device considering groundwater according to claim 1, wherein the water inlet system (3) adopts a liftable water tank, the liftable water tank comprises a water storage tank (31) and a lifting frame (32), the lifting frame (32) is fixedly arranged at the end part of the box body (11), the water storage tank (31) is installed on the lifting frame (32), and a water outlet of the water storage tank (31) is communicated with the first water supply pipe (12) or the second water supply pipe (13).
8. The underground water-based ground fracture site hazard simulation device of claim 1, wherein the simulated soil layers in the upper or lower panel are formed by filling soil in layers, and the layered height of the simulated soil layers is 10-15 cm.
9. The underground water-based ground fracture site hazard simulation device as claimed in claim 1, wherein the ground fracture interface filler (2) is fine sand or silty sand.
10. A method for simulating a ground fracture site damage considering groundwater, which comprises the steps of:
step 1, obliquely arranging a ground crack template in a box body, and filling soil on two sides of the ground crack template in a layered mode to enable the ground crack template to form an upper plate area simulation soil layer and a lower plate area simulation soil layer on two sides of the ground crack template respectively;
step 2, after the filling of the simulated soil layer is completed, taking out the ground crack template, forming a ground simulated ground crack interface between the simulated soil layer of the upper disc area and the simulated soil layer of the lower disc area, and then filling ground crack filling bodies in the simulated ground crack interface in a layered mode to form a simulated ground crack field;
step 3, closing the drain pipe, starting a water inlet system, injecting water into the upper panel simulation soil layer and the lower panel simulation soil layer respectively, and enabling the water level in the upper panel simulation soil layer and the lower panel simulation soil layer to reach a design value;
step 4, after the water levels in the upper disc area simulation soil layer and the lower disc area simulation soil layer are stabilized, applying external loads to the upper disc area simulation soil layer and/or the lower disc area simulation soil layer in the box body according to design requirements; and recording the deformation damage condition of the simulated ground fracture field, the influence ranges of the simulated soil layer of the upper disc area and the simulated soil layer of the lower disc area and the response characteristics of the simulated ground fracture field under the action of external load, and completing the ground fracture field damage simulation test.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010950446.6A CN111948379A (en) | 2020-09-10 | 2020-09-10 | Ground crack field damage simulation device and method considering underground water |
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| CN202010950446.6A CN111948379A (en) | 2020-09-10 | 2020-09-10 | Ground crack field damage simulation device and method considering underground water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115201012A (en) * | 2022-07-13 | 2022-10-18 | 中国地质科学院地质力学研究所 | Centrifugal model test device and method for simulating large-scale ground fissure formation evolution process |
| CN117969770A (en) * | 2024-03-29 | 2024-05-03 | 中国地质大学（北京） | Ground crack disaster response simulation system and method under underground water level fluctuation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115201012A (en) * | 2022-07-13 | 2022-10-18 | 中国地质科学院地质力学研究所 | Centrifugal model test device and method for simulating large-scale ground fissure formation evolution process |
| CN117969770A (en) * | 2024-03-29 | 2024-05-03 | 中国地质大学（北京） | Ground crack disaster response simulation system and method under underground water level fluctuation |
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