Coal and gas outburst dynamic disaster-induced visual physical simulation test system

Abstract

The invention discloses a visual physical simulation test system for coal and gas outburst power caused disaster. A simulation tunnel pipeline is arranged on the rear side of a simulation test platform; three rows of crossing pipe joints are arranged on the simulation test platform; two adjacent crossing pipe joints in the same row are connected through a longitudinal square straight pipe; two adjacent crossing pipe joints in the same line are connected through a horizontal square straight pipe; a high definition camera is arranged at the top of each crossing pipe joint; axial measuring sections are arranged at the two ends of each square straight pipe; lateral pressure measuring sections are arranged on the middle parts of the square straight pipes; three pressure sensors, three temperature sensors and two concentration sensors are arranged on the axial measuring sections; three lateral pressure sensors are arranged on the lateral pressure measuring sections. The visual physical simulation test system can practically simulate the mine tunnel network, can comprehensively collect data and can utilize the collected data to deeply research a disaster-causing mechanism of coal-gas two-phase flows. The visualization degree is sufficient and the practical movement form of the coal-gas two-phase flows can be clearly reflected.

Description

technical field [0001] The invention relates to a visual physical simulation test system of coal and gas outburst power disasters. Background technique [0002] Coal and gas outburst is the most severe mine dynamic disaster in coal mine accidents. The coal and rock thrown out by it can directly cause casualties of underground workers, or destroy underground facilities and other accidents; the instantaneous high-pressure gas storm flow can flow against the wind Going forward is full of tunnels tens to thousands of meters long, and even reverses the entire mine, which may cause underground workers to suffocate and die. Once they encounter a fire source, gas explosions, fires, and even secondary disasters such as coal dust explosions may occur, causing major disasters. casualties and property damage. [0003] In order to effectively prevent the occurrence of coal and gas outburst accidents, researchers from all over the world have put forward a variety of coal and gas outburst...

AI Technical Summary

Problems solved by technology

[0007] Disadvantages: simple structure, the provided two-phase flow power equipment only comes from gas cylinders, and the roadway is only a straight line, which is far from the actual coal and gas outburst environment in the mine

[0010] Disadvantages: The single structure cannot simulate the mine network structure, the sensor layout is simple, and it is impossible to carry out in-depth research on the disaster-causing mechanism of two-phase flow

[0013] Disadvantages: the single structure cannot simulate the mine network structure, the sensor layout is simple, the data collection is single, and it is impossible to conduct in-depth research on the disaster-causing mechanism of two-phase flow

[0016] Disadvantages: It is mainly designed for the research on the evolution characteristics of coal seam internal parameters in the process of coal and gas outburst, and the structure and parameter monitoring of the roadway are relatively simple

[0020] The layout of roadway structure is relatively simple: there are only 3 kinds of structural pipe fittings, and there are few forms that can be combined, so it is difficult to simulate the complex coal mine roadway network

[0021] The layout of tunnel measurement points is relatively simple: since various sensors are only installed on the tunnel wall, they cannot reflect the parameter distribution and evolution law of coal-gas two-phase flow at the three-dimensional level

[0022] The image signal acquired by the n roadway system is relatively single: only local images of the coal-gas two-phase flow migration can be collected from the outside of the roadway through the observation hole, and the image of the coal-gas two-phase flow migration cannot be obtained along the entire roadway network

[0023] nThe degree of visualization is low: although an observation window is set up on the roadway wall to observe the pulverized coal accumulation form with the naked eye, the size of the observation window is small and the visual range is narrow, which is not convenient for data collection, and there is no visualization supporting software

[0024] To sum up, the design of the existing devices is relatively simple, and it is impossible to simulate the network of the mine roadway more realistically; the sensor layout is simple, and when the propagation law of the coal-gas two-phase flow is studied, the existing devices are installed with sensors on the roadway wall , it is impossible to obtain the parameters in the middle of the coal-gas two-phase flow migration section, and it is impossible to conduct in-depth research on its real migration characteristics; Carry out in-depth research on the mechanism; the degree of visualization is insufficient, and the real migration form of the coal-gas two-phase flow is still unclear after relevant simulation tests

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