Experimental device for high-gas strong-mine-pressure hybrid dynamic disasters

Abstract

The utility model relates to a high-gas strong-mine-pressure hybrid dynamic disaster experiment device, and relates to the technical field of indoor experiment equipment, the high-gas strong-mine-pressure hybrid dynamic disaster experiment device comprises an experiment box and an experiment assembly, the experiment box is internally provided with a sample; the test assembly comprises a gas control part and a test part, and the gas control part is arranged on the test box and used for simulating gas pressure in the test box; the test part is arranged on the test box and is used for carrying out a pressure detection test on the sample. The method has the effect of improving the accuracy of experimental results.

Description

Technical Field

[0001] The present application relates to the technical field of indoor experimental equipment, and in particular to a high-gas and high-mine pressure composite dynamic disaster experimental device. Background Art

[0002] As mining depth increases, coal mines encounter a mining environment with "three highs and one low" characteristics: high ground stress, high gas pressure, high temperature, and low permeability. Coal mine dynamic disasters transform from single disasters to compound dynamic disasters. However, traditional experimental equipment cannot simulate compound dynamic disaster problems.

[0003] Currently, experimental research primarily simulates rock burst or gas inrush. Common experimental setups include hydraulic jack loading systems for rock burst and gas input systems for gas pressure. These methods provide researchers with a preliminary understanding of the changes in the physical and mechanical properties of coal and rock materials under a single catastrophic condition.

[0004] However, the existing experimental equipment has shortcomings when simulating complex dynamic disasters, especially the inability to simultaneously consider the coupling effects of static load pressure, dynamic disturbance and gas pressure, and the inability to simulate the real dynamic changes in the stress state of coal and rock during tunnel excavation. Utility Model Content

[0005] In order to improve the accuracy of experimental results, the present application provides a high gas and high mine pressure composite dynamic disaster experimental device.

[0006] This application provides a high gas and high mine pressure compound dynamic disaster experimental device, which adopts the following technical solutions:

[0007] A high-gas and high-mine-pressure composite dynamic disaster experimental device comprises an experimental box and a test assembly, wherein a sample is provided inside the experimental box; the test assembly comprises an air control part and a test part, wherein the air control part is arranged on the experimental box and is used to simulate the gas pressure in the experimental box; the test part comprises a hydraulic jack, a pressure sensor, an impact guide rod, a drop hammer and a controller, wherein the hydraulic jack is fixed on the top of the experimental box through a support frame, and the piston end is passed through the experimental box, and the piston end of the hydraulic jack abuts the sample; the pressure sensor is fixed on the hydraulic jack and is located between the hydraulic jack and the experimental box; the impact guide rod is fixed on the support frame, and the drop hammer is sleeved on the impact guide rod, and an electromagnet is fixed on the end of the impact guide rod away from the support frame, and the electromagnet is electrically connected to the controller fixed on the experimental box. When powered on, the electromagnet adsorbs the drop hammer.

[0008] By adopting the above technical solution, the gas pressure is simulated in the test box through the gas control unit, which can accurately control and adjust the gas concentration and pressure in the experimental environment, thereby simulating the high gas environment in a real mine;

[0009] The hydraulic jack is used as a loading device to apply pressure to the sample through its piston end to simulate the mine pressure in the mine. The controller controls the electromagnet to disconnect and controls the release and impact of the drop hammer through the electromagnet. This design can simulate sudden impact ground pressure events in the mine and study the dynamic response characteristics of the sample. The pressure sensor monitors the loading force of the hydraulic jack on the sample in real time to ensure the accuracy and reliability of the experimental data. Through the analysis and processing of the experimental data, we can gain an in-depth understanding of the occurrence mechanism, influencing factors and effectiveness of prevention and control measures of high-gas and high-mine pressure combined dynamic disasters, thereby easily improving the accuracy of the experimental results.

[0010] Optionally, the air control unit includes an air inlet pipe, a helium bottle, a vacuum pump and an exhaust pipe, one end of the air inlet pipe is connected to the experimental box, and the helium bottle is connected to the experimental box through the air inlet pipe; the input end of the vacuum pump is connected to the air inlet pipe; the controller is electrically connected to the vacuum pump; and one end of the exhaust pipe is connected to the experimental box.

[0011] By adopting the above technical solution, the vacuum pump evacuates the experimental box, and then draws helium from the helium bottle into the experimental box, thereby improving the accuracy and reliability of the experiment;

[0012] At the same time, the vacuum pump can also perform vacuum operations as needed during the experiment to simulate the change process of gas pressure, thereby achieving accurate simulation and control of the gas pressure in the experimental box.

[0013] Optionally, the hydraulic jack is connected to a manual hydraulic pump via a connecting pipe.

[0014] By adopting the above technical solution, the loading force and loading speed of the hydraulic jack can be flexibly adjusted through a manual hydraulic pump, making the experimental process more controllable and enabling accurate loading simulation according to different experimental requirements.

[0015] Optionally, a flow meter is connected in series on both the air inlet pipe and the exhaust pipe, and the flow meter is electrically connected to the controller.

[0016] By adopting the above technical solution, the flow meter can monitor the gas flow in the intake pipe and exhaust pipe in real time, ensuring the accuracy and stability of the gas flow during the experiment.

[0017] Optionally, a strain gauge is provided inside the sample.

[0018] By adopting the above technical solution, the strain gauge can accurately measure the deformation of the sample under the combined action of mine pressure and gas pressure in real time. By measuring the resistance change of the strain gauge, the strain value of the sample under specific conditions can be calculated, thereby understanding the deformation characteristics and mechanical behavior of the sample.

[0019] Optionally, the support frame is made of steel.

[0020] By adopting the above technical solution, the steel support is made of high-strength steel, has high compressive strength, and can withstand large loads without deformation or damage.

[0021] Optionally, a sealing gasket is provided at the connection between the experimental box and the piston end of the hydraulic jack.

[0022] By adopting the above technical solution, the gas inside the experimental box can be prevented from leaking into the external environment through the joints. In addition, by maintaining the airtightness inside the experimental box, the environmental conditions such as gas pressure, temperature and humidity required for the experiment can be stably maintained, providing a stable and controllable experimental environment for the experiment.

[0023] Optionally, the experimental box is made of transparent material.

[0024] By adopting the above technical solution, the transparent material enables the experimenter to directly and clearly observe the situation inside the experimental box, which helps the experimenter to conduct more accurate quantitative analysis and comparison.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. By setting up a test unit, we can gain a deeper understanding of the occurrence mechanism, influencing factors and effectiveness of prevention and control measures of high gas and high mine pressure combined dynamic disasters, thereby facilitating the improvement of the accuracy of experimental results;

[0027] 2. By setting up the gas control unit, the gas extraction operation is carried out as needed during the experiment to simulate the change process of gas pressure, thereby realizing the accurate simulation and control of the gas pressure in the experimental box;

[0028] 3. By setting up a flow meter, the flow meter can monitor the gas flow in the intake pipe and exhaust pipe in real time to ensure the accuracy and stability of the gas flow during the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural diagram of an embodiment of the present application;

[0030] Figure 2 2 is a cross-sectional view of the test assembly in the embodiment of the present application.

[0031] Description of reference numerals:

[0032] 1. Test box; 11. Test specimen; 12. Support frame; 13. Sealing gasket; 2. Test assembly; 21. Air control unit; 211. Air inlet pipe; 2111. Flow meter; 212. Helium cylinder; 213. Vacuum pump; 214. Exhaust pipe; 22. Test unit; 221. Hydraulic jack; 2211. Manual hydraulic pump; 222. Pressure sensor; 223. Impact guide rod; 2231. Electromagnet; 224. Drop hammer; 225. Controller. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-2 This application is described in further detail.

[0034] The present application discloses a high gas and high mine pressure compound dynamic disaster experimental device. Figure 1 and Figure 2 A high-gas and high-mine pressure composite dynamic disaster experimental device includes an experimental box 1 and a test component 2. The experimental box 1 is made of transparent material. A sample 11 is provided inside the experimental box 1, and a strain gauge is provided inside the sample 11. The test component 2 is arranged on the experimental box 1 and is used to perform a pressure detection experiment on the sample 11.

[0035] During use, the sample 11 is placed in the experimental box 1, and the test component 2 performs a pressure detection experiment on the sample 11, so as to gain an in-depth understanding of the occurrence mechanism, influencing factors and effectiveness of prevention and control measures of high-gas and high-mine pressure combined dynamic disasters, thereby easily improving the accuracy of the experimental results.

[0036] Reference Figure 1 The test assembly 2 includes a gas control unit 21 and a test unit 22. The gas control unit 21 includes an air inlet pipe 211, a helium cylinder 212, a vacuum pump 213, and an exhaust pipe 214. One end of the air inlet pipe 211 is connected to the test box 1, and the helium cylinder 212 is connected to the test box 1 through the air inlet pipe 211. The input end of the vacuum pump 213 is connected to the air inlet pipe 211. The controller 225 is electrically connected to the vacuum pump 213. One end of the exhaust pipe 214 is connected to the test box 1. A flow meter 2111 is connected in series to each of the air inlet pipe 211 and the exhaust pipe 214, and the flow meter 2111 is electrically connected to the controller 225.

[0037] Reference Figure 1 and Figure 2 The test part 22 includes a hydraulic jack 221, a pressure sensor 222, an impact guide rod 223, a drop hammer 224 and a controller 225. The hydraulic jack 221 is fixed to the top of the test box 1 through the support frame 12, and the piston end is passed through the test box 1. The piston end of the hydraulic jack 221 abuts against the sample 11.

[0038] The hydraulic jack 221 is connected to a manual hydraulic pump 2211 via a connecting pipe. The support frame 12 is made of steel material, and a sealing gasket 13 is provided at the connection between the experimental box 1 and the piston end of the hydraulic jack 221.

[0039] The pressure sensor 222 is fixed on the hydraulic jack 221 and is located between the hydraulic jack 221 and the experimental box 1; the impact guide rod 223 is fixed on the support frame 12, and the drop hammer 224 is mounted on the impact guide rod 223. An electromagnet 2231 is fixed on the end of the impact guide rod 223 away from the support frame 12. The electromagnet 2231 is electrically connected to the controller 225 fixed on the experimental box 1. When powered on, the electromagnet 2231 attracts the drop hammer 224.

[0040] During use, the vacuum pump 213 evacuates the test box 1, and then draws helium from the helium cylinder 212 into the test box 1 to simulate the change process of gas pressure. The manual hydraulic pump 2211 flexibly adjusts the loading force and loading speed of the hydraulic jack 221. The controller 225 controls the electromagnet 2231 to disconnect, and controls the release and impact of the drop hammer 224 through the electromagnet 2231, which can simulate sudden impact ground pressure events in mines and study the dynamic response characteristics of the sample 11. The pressure sensor 222 monitors the loading force of the hydraulic jack 221 on the sample 11 in real time to ensure the accuracy and reliability of the experimental data. Through the analysis and processing of the experimental data, we can have an in-depth understanding of the occurrence mechanism, influencing factors and effectiveness of prevention and control measures of high gas and high mine pressure composite dynamic disasters, thereby easily improving the accuracy of the experimental results.

[0041] The implementation principle of the high gas and strong mine pressure combined dynamic disaster experimental device of the embodiment of the present application is: the vacuum pump 213 evacuates the experimental box 1, and then extracts helium from the helium cylinder 212 into the experimental box 1 to simulate the change process of the gas pressure. The manual hydraulic pump 2211 flexibly adjusts the loading force and loading speed of the hydraulic jack 221. The controller 225 controls the electromagnet 2231 to disconnect, and controls the release and impact of the drop hammer 224 through the electromagnet 2231, which can simulate sudden impact ground pressure events in mines and study the dynamic response characteristics of the sample 11. The pressure sensor 222 monitors the loading force of the hydraulic jack 221 on the sample 11 in real time to ensure the accuracy and reliability of the experimental data. Through the analysis and processing of the experimental data, we can have an in-depth understanding of the occurrence mechanism, influencing factors and effectiveness of prevention and control measures of high gas and strong mine pressure combined dynamic disasters, thereby easily improving the accuracy of the experimental results.

[0042] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A high gas and high mine pressure composite dynamic disaster experimental device, characterized by: The invention comprises an experimental box (1) and a test assembly (2), wherein a sample (11) is provided inside the experimental box (1); the test assembly (2) comprises an air control unit (21) and a test unit (22), wherein the air control unit (21) is provided on the experimental box (1) and is used to simulate gas pressure in the experimental box (1); the test unit (22) comprises a hydraulic jack (221), a pressure sensor (222), an impact guide rod (223), a drop hammer (224) and a controller (225), wherein the hydraulic jack (221) is fixed on the top of the experimental box (1) through a support frame (12), and a piston end is passed through the experimental box (1), and the hydraulic jack ( The piston end of the hydraulic jack (221) abuts against the sample (11); the pressure sensor (222) is fixed on the hydraulic jack (221) and is located between the hydraulic jack (221) and the experimental box (1); the impact guide rod (223) is fixed on the support frame (12), and the drop hammer (224) is sleeved on the impact guide rod (223); an electromagnet (2231) is fixed on the end of the impact guide rod (223) away from the support frame (12), and the electromagnet (2231) is electrically connected to the controller (225) fixed on the experimental box (1). When powered on, the electromagnet (2231) adsorbs the drop hammer (224).

2. The high gas and high mine pressure combined dynamic disaster experimental device according to claim 1, characterized in that: The gas control unit (21) includes an air inlet pipe (211), a helium bottle (212), a vacuum pump (213) and an exhaust pipe (214); one end of the air inlet pipe (211) is connected to the experimental box (1); the helium bottle (212) is connected to the experimental box (1) through the air inlet pipe (211); the input end of the vacuum pump (213) is connected to the air inlet pipe (211); the controller (225) is electrically connected to the vacuum pump (213); and one end of the exhaust pipe (214) is connected to the experimental box (1).

3. The high gas and high mine pressure combined dynamic disaster experimental device according to claim 1, characterized in that: The hydraulic jack (221) is connected to a manual hydraulic pump (2211) via a connecting pipe.

4. The high gas and high mine pressure combined dynamic disaster experimental device according to claim 2, characterized in that: A flow meter (2111) is connected in series to both the air inlet pipe (211) and the exhaust pipe (214), and the flow meter (2111) is electrically connected to the controller (225).

5. The high gas and high mine pressure combined dynamic disaster experimental device according to claim 1 is characterized by: A strain gauge is provided inside the sample (11).

6. The high gas and high mine pressure combined dynamic disaster experimental device according to claim 1, characterized in that: The support frame (12) is made of steel material.

7. The high gas and high mine pressure combined dynamic disaster experimental device according to claim 1, characterized in that: A sealing gasket (13) is provided at the connection between the experimental box (1) and the piston end of the hydraulic jack (221).

8. The high gas and high mine pressure combined dynamic disaster experimental device according to claim 1 is characterized by: The experimental box (1) is made of transparent material.

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