Coal and gas outburst impact dynamic evolution experimental device

Abstract

The invention discloses a coal and gas outburst impact dynamic evolution experimental device which comprises an outburst power simulation system, a tunnel model system and a data image acquisition system, wherein the tunnel model system and the data image acquisition system are arranged on an experimental device supporting table; the outburst power simulation system is connected with the tunnel model system through a flange; the data image acquisition system is connected to a data image acquisition port of the tunnel model system; and gas-pulverized coal two-phase flow outburst is induced by the outburst power simulation system, and a two-phase flow evolution rule in the tunnel model system is further monitored by utilizing the data image acquisition system. The experimental device disclosed by the invention is novel in design, and the velocity change and pressure change of outburst power in a tunnel of different bifurcation angles can be monitored by monitoring the ejected pulverized coal migration characteristics and gas flow streamline, so that coal and gas outburst impact dynamic evolution characteristic simulation is realized.

Description

technical field [0001] The invention belongs to a laboratory simulation of coal and gas outburst and an outburst dynamic evolution experimental device for studying the movement law of coal and gas two-phase flow in the outburst process. Background technique [0002] Coal and gas outburst is an extremely serious disaster in coal mine production. The huge power generated by outburst can destroy underground facilities and cause casualties. Because it is difficult to carry out field experiments on the dynamic evolution of coal and gas outburst, laboratory research on the dynamic evolution characteristics of coal and gas outburst has become an important means; The impact of fork angle changes on the dynamic attenuation during the outburst process, and the lack of monitoring of the experimental parameters of the interaction between pulverized coal and gas flow during the outburst process, and the interaction between pulverized coal and gas is an important parameter for the dynamic...

AI Technical Summary

Problems solved by technology

Because it is difficult to carry out field experiments on the dynamic evolution of coal and gas outburst, laboratory research on the dynamic evolution characteristics of coal and gas outburst has become an important means; The impact of fork angle changes on the dynamic attenuation during the outburst process, and the lack of monitoring of the experimental parameters of the interaction between pulverized coal and gas flow during the outburst process, and the interaction between pulverized coal and gas is an important parameter for the dynamic attenuation of coal and gas outburst, so in order to To better study the impact dynamic evolution process of coal and gas outburst, it is necessary to improve the existing experimental equipment

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