Acoustic and electric parameter measuring device used for loading procedure of gas-containing coal bodies

Abstract

The invention discloses an acoustic and electric parameter measuring device used for loading procedure of gas-containing coal bodies. The measuring device includes a loading system, a gas circuit system, an acoustic parameter measuring system and an electric parameter measuring system, wherein the loading system includes a loading device capable of relatively and hermetically performing radial loading and axial loading, and a loading pump providing load for the loading procedure; the gas circuit system includes a methane gas bottle, as well as a gas inlet pipeline and a gas outlet pipeline that are communicated with the loading device respectively, wherein the methane gas bottle is connected onto the gas inlet pipeline; the acoustic parameter measuring system includes an acoustic probe, a sound generator and an oscilloscope; and further, the electric parameter measuring system includes an electrode plate, an insulation board and an LCR (inductance, capacitance and resistance) tester. Through adopting the structure, the measuring device can test different coal body acoustic and electric parameters as axial pressure, confining pressure and pore pressure, and provides a great deal of accurate test data and theoretical base.

Description

technical field [0001] The invention relates to a test device, in particular to a device for measuring acoustic and electric parameters during the loading process of gas-containing coal, belonging to the technical field of coal mines. Background technique [0002] my country is a country rich in coal resources, and at the same time, it is also a country with serious disasters and accidents in high-gas coal mines. During the mining of coal resources, major coal and rock dynamic disasters such as coal and gas outburst, rock burst, roof collapse, and surrounding rock deformation often occur. With the extension of coal mining depth and the continuous expansion of mining scale, this problem The trend is becoming more and more serious. Therefore, exploring reasonable forecasting theory and accurate and reliable forecasting methods is an urgent problem for coal mine safety science and technology workers. [0003] As a geophysical detection technology, electromagnetic radiation and...

AI Technical Summary

Problems solved by technology

[0004] It is difficult for the existing coal acoustic and electric parameter testing system to test the acoustic and electrical parameters of gas-containing coal. Therefore, the problem to be solved by the present invention is to manufacture an acoustic and electrical parameter testing device for gas-containing coal.

Images