Visual tunnel water inrush simulation test device

Abstract

The utility model provides a visual tunnel water inrush simulation test device which is characterized in that an inner cavity of a box body is divided into a simulation cavity and a water collection cavity through a filter plate, and a fluid-solid coupling similar material is arranged in the simulation cavity; the water supply module is arranged at one end, corresponding to the simulation cavity, of the box body so as to simulate tunnel water inrush by supplying water to the fluid-solid coupling similar material; the osmotic pressure modules comprise a plurality of osmometers which are distributed in the same plane array, and the plurality of osmotic pressure modules are uniformly distributed in the simulation cavity; the display module is correspondingly connected with the osmotic pressure module through the controller. A fluid-solid coupling similar material is arranged in a box body, water inrush simulation is realized through water supply, a plurality of groups of osmotic pressure modules are arranged in the fluid-solid coupling similar material, and osmotic pressure flow meters in the osmotic pressure modules are distributed in an annular array, so that the internal seepage state of the fluid-solid coupling similar material can be monitored; the display is used for displaying the seepage state of the corresponding area of each seepage pressure module, so that the water inrush catastrophe process is visually reproduced, and the authenticity of the obtained disaster evolution rule is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of tunnel disaster simulation test, specifically relates to a visual tunnel water inrush simulation test device. BACKGROUND

[0002] In the tunnel construction process, karst or fault fracture zone and other water-rich structures are often encountered, under the action of water control structure and high water pressure, tunnel excavation disturbance is easy to induce water inrush disaster, water inrush is the sudden large gushing phenomenon of underground chamber, tunnel and the like when passing through the developed cave encountering underground river, thick layer of water and sand gravel layer and the large fracture zone connected with the surface water, at present, the research on water inrush mechanism focuses on the occurrence condition and influence factor of disaster, but the nonlinear and strong complexity characteristics of disaster evolution law in the process of water inrush disaster are not clear, which leads to the difficulty in breaking through the disaster mechanism.

[0003] Therefore, it is necessary to provide an improved technical scheme for the above-mentioned prior art deficiencies. UTILITY MODEL CONTENT

[0004] The utility model discloses a visual tunnel water inrush simulation test device.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A visual tunnel water inrush simulation test device, comprising:

[0007] The box body inner chamber is divided into a simulation cavity and a water collection cavity by a filter plate, and a fluid-solid coupling similar material is arranged in the simulation cavity;

[0008] The water supply module is arranged at one end of the box body corresponding to the simulation cavity to simulate tunnel water inrush by supplying water to the fluid-solid coupling similar material;

[0009] The osmotic pressure module comprises a plurality of osmotic pressure gauges arranged in the same plane array, and a plurality of osmotic pressure modules are uniformly distributed in the simulation cavity;

[0010] The display module is connected to the osmotic pressure module through the controller.

[0011] Preferably, the osmotic pressure module is fixed in the box body through a fixing plate, a circular hole is arranged in the middle of the fixing plate, a plurality of steel strands are arranged in the hole in a diverging manner, and the osmotic pressure gauges are fixed on the steel strands.

[0012] Preferably, the inner wall of the box body is provided with a sliding groove corresponding to the fixing plate.

[0013] Preferably, the filter plate edge is provided with a rubber ring to form a sliding seal with the box, and the water collecting cavity is provided with an extension column corresponding to the filter plate.

[0014] Preferably, the upper part of the box is provided with an upper cover which is detachably mounted by bolts.

[0015] Preferably, the simulation cavity is provided with a partition plate near one end of the water supply module, and the partition plate is provided with seepage holes corresponding to the fluid-solid coupling similar material in the middle part.

[0016] Preferably, the water supply module comprises a water pump, a flow meter and a water pressure gauge, the water pump is connected to the box through a connecting pipe, and the flow meter and the water pressure gauge are correspondingly arranged on the connecting pipe.

[0017] Preferably, the lower edge of the water collecting cavity is connected with a liquid collecting groove through a drainage groove.

[0018] Beneficial effects: the fluid-solid coupling similar material is arranged in the box, and water supply is used to realize water inrush simulation, a plurality of seepage pressure modules are arranged in the fluid-solid coupling similar material, and the seepage pressure flow meters in the seepage pressure modules are arranged in an annular array, so that the seepage state in the fluid-solid coupling similar material can be monitored, the display is used to display the seepage state of the corresponding area of each seepage pressure module, and the water inrush disaster process can be visualized and reproduced, and the authenticity of the obtained disaster evolution law is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings accompanying the specification of the present application form a part of the present application and serve to provide a further understanding of the present application, the illustrative embodiments of the present application and its description serve to explain the present application, and do not constitute an improper limitation of the present application. Among them:

[0020] Fig. 1 The structure diagram of the experimental device in the specific embodiment provided by the present application is shown in the figure;

[0021] Fig. 2 The structure diagram of the fixed plate in the specific embodiment provided by the present application is shown in the figure.

[0022] In the figure: 1, box; 2, filter plate; 3, partition plate; 4, fixed plate; 5, water supply module; 6, upper cover; 7, extension column; 8, seepage pressure gauge; 9, steel strand; 10, rubber ring. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiment of the present application will be described clearly and completely below. Obviously, the described embodiment is only a part of the embodiment of the present application, not all the embodiments. Based on the embodiment in the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0024] In the description of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected" and "linked" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0025] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0026] like Figs. 1-2 As shown, a visual tunnel water inrush simulation test device is used to study the correlation between water pressure, the physical and mechanical properties and structural characteristics of the anti-water inrush rock mass, and the anti-water inrush thickness. Through simulation tests under various working conditions, parameters of tunnel water inrush disasters are obtained. The specific test device includes a box 1, a water supply module 5, a seepage pressure module, and a display module. The box 1 has a cuboid structure, and its interior is divided into a simulation chamber and a water collection chamber by a filter plate 2. The filter plate 2 is a metal plate with uniformly distributed drainage holes. A fluid-structure interaction similar material is placed in the simulation chamber. This material is composed of sand, cement, kaolin, petrolatum, and water mixed in a certain proportion. During preparation, the raw materials need to be mixed evenly in a mixer, then placed in a molding mold and compacted, and finally left at room temperature for a certain period of time to solidify.

[0027] The water supply module 5 is located at one end of the simulation cavity corresponding to the box 1 to simulate tunnel water inrush by supplying water to the fluid-structure interaction similar material. The pressure module includes multiple pressure gauges 8 distributed in the same plane array. The pressure gauge 8, also known as a pressure sensor, is a sensor used to measure the pressure of seepage (pore) water inside a structure. This allows for the detection of pressure changes of tunnel water inrush at the same cross section of the box 1, thereby obtaining the pressure changes at various points on the cross section. Furthermore, multiple pressure modules are evenly distributed in the simulation cavity, thus enabling comprehensive detection of the pressure changes of tunnel water inrush inside the box 1 from point to surface. The display module is connected to the pressure module through the controller, thereby displaying the pressure changes at any cross section, thus fully connecting the water inrush change law. The controller can be a computer with monitoring software installed. It converts the data of the pressure gauges 8 to obtain the dynamic changes of the pressure gauges 8, and performs three-dimensional simulation based on the data of any two adjacent pressure gauges 8, thereby simulating the water inrush law more intuitively.

[0028] In an optional embodiment, the osmotic pressure module is fixed in the box 1 by a fixed plate 4, the fixed plate 4 is matched with the section of the inner cavity of the box 1, a circular center hole is arranged in the middle of the fixed plate 4, the diameter of the center hole is increased as much as possible on the premise of ensuring the strength of the fixed plate 4, so as to avoid affecting the seepage, a plurality of steel strands 9 arranged in divergent manner are arranged in the center hole, and the osmotic pressure meter 8 is correspondingly fixed on the steel strands 9.

[0029] Specifically, the fixed plate 4 can be a steel plate or an organic glass plate, the steel strands 9 are 4-8, one end of the steel strands 9 is fixed at the center of the center hole, and the other end is fixed on the inner wall of the center hole to form a divergent structure, and the mounting station corresponding to the osmotic pressure meter 8 is arranged on the steel strands 9, which can be fixed with the osmotic pressure meter 8 by buckle bolts and the like. Preferably, the steel strands 9 are 6, and 4 osmotic pressure meters 8 are arranged on each steel strand 9.

[0030] In an optional embodiment, the inner wall of the box 1 is provided with a sliding groove corresponding to the fixed plate 4, the sliding groove is a U-shaped groove extending along the inner wall of the box 1, and the width of the sliding groove is matched with the thickness of the fixed plate 4, so as to be used for connecting and fixing the fixed plate 4.

[0031] The edge of the filter plate 2 is provided with a rubber ring 10 to form a sliding seal with the box 1, so that the filter plate 2 can slide according to the test requirements, so as to adjust the volume of the fluid-structure coupling similar material, and adjust the number of osmotic pressure modules according to the displacement of the filter plate 2. The osmotic pressure meter 8 is connected to the controller through the data line upwardly penetrating through the upper cover 6 to transmit data, the upper cover 6 is provided with a through hole corresponding to the data line, the through hole is coated with sealing glue, and the water collecting cavity is provided with an expansion column 7 corresponding to the filter plate 2. The expansion column 7 can be a threaded stud and a threaded sleeve, so that after the position of the filter plate 2 is adjusted, the expansion column 7 can be in contact with the inner wall of the box 1 to ensure the stability of the filter plate 2 and avoid the displacement of the fluid-structure coupling similar material.

[0032] In the embodiment, the expansion column 7 is 4, and the four expansion columns 7 are respectively in contact with the four corners of the filter plate 2.

[0033] In an optional embodiment, the upper part of the box 1 is provided with an upper cover 6 which is detachably mounted by bolts, the upper cover 6 can be an organic glass plate, a sealing gasket is arranged between the box 1 and the upper cover 6, one end of the simulation cavity close to the water supply module 5 is provided with a partition plate 3, the middle of the partition plate 3 is provided with a seepage hole corresponding to the fluid-structure coupling similar material, and the lower surface of the matched upper cover 6 is provided with a sealing strip corresponding to the partition plate 3, so that the partition plate 3 divides the simulation cavity into an independent cavity to distribute water seepage and ensure the uniformity of water seepage.

[0034] In addition, the filter plate 2 is preferably an organic glass plate, and a sealing strip corresponding to the organic glass plate is arranged on the lower surface of the upper cover 6 to seal the simulation cavity.

[0035] In an alternative embodiment, the water supply module 5 comprises a water pump, a flow meter and a water pressure gauge, the water pump can be a pressure regulating water pump, the water pump is connected to the box 1 through a connecting pipe, and the flow meter and the water pressure gauge are correspondingly arranged on the connecting pipe to adjust the water pressure according to actual needs.

[0036] The lower edge of the water collecting cavity is connected with a liquid collecting groove through a drainage groove, and the seepage liquid in the liquid collecting groove is subjected to solid-liquid separation, so as to calculate the gushing water amount and the particle loss amount.

[0037] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application is within the protection scope of the pending claims of the present application.

Claims

1. A visual tunnel water inrush simulation test device, characterized in that, include: The box body has its internal cavity divided into a simulation cavity and a water collection cavity by a filter plate, and a fluid-structure interaction similar material is provided in the simulation cavity; A water supply module is provided at one end of the housing corresponding to the simulation cavity, so as to simulate tunnel water inrush by supplying water to the fluid-structure interaction similar material; The osmotic pressure module includes multiple osmotic gauges arranged in a planar array, and the multiple osmotic pressure modules are uniformly distributed within the simulation chamber; The display module is connected to the pressure osmosis module via a controller.

2. The visual tunnel water inrush simulation test device according to claim 1, characterized in that, The pressure testing module is fixed inside the box by a fixing plate. The fixing plate has a circular central hole in the middle, and multiple strands of steel wire arranged in a divergent manner are arranged inside the central hole. The pressure gauge is fixed to the steel strands accordingly.

3. The visual tunnel water inrush simulation test device according to claim 2, characterized in that, The inner wall of the box is provided with a sliding groove corresponding to the fixing plate.

4. The visual tunnel water inrush simulation test device according to claim 1, characterized in that, The filter plate is provided with a rubber ring on its edge to form a sliding seal with the box body, and a telescopic column corresponding to the filter plate is provided in the water collection cavity.

5. The visual tunnel water inrush simulation test device according to claim 1, characterized in that, The box is equipped with a top cover that can be detachably installed by bolts.

6. The visual tunnel water inrush simulation test device according to claim 1, characterized in that, The simulation chamber is provided with a partition at one end near the water supply module, and the partition has a seepage hole in the middle of a material similar to that used in fluid-structure interaction.

7. The visual tunnel water inrush simulation test device according to claim 1, characterized in that, The water supply module includes a water pump, a flow meter, and a water pressure gauge. The water pump is connected to the housing via a connecting pipe, and the flow meter and water pressure gauge are correspondingly installed on the connecting pipe.

8. The visual tunnel water inrush simulation test device according to claim 1, characterized in that, The lower edge of the water collection chamber is connected to a liquid collection tank via a drainage channel.

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