A Testing Apparatus for Gas-Driven Coal and Gas Outbursts and its Application

被引:0
|
作者
Zou, Yunlong [1 ,2 ]
Peng, Bo [3 ]
Liu, Rong [1 ]
Fan, Jinyang [1 ]
机构
[1] Chongqing Univ, Sch Resources & Safety Engn, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing, Peoples R China
[2] CCTEG Chongqing Res Inst, Chongqing, Peoples R China
[3] Sichuan Coal Huarong Energy Co LTD, Chengdu, Peoples R China
关键词
testing system; coal and gas outburst; gas-driven; pressure detecting; temperature detecting; ACOUSTIC-EMISSION; MINE; DESORPTION; METHANE; SALT; DECOMPRESSION; ASSOCIATION; DRAINAGE; ROLES; ROCK;
D O I
10.3389/feart.2021.806814
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
In this study, a multi-physics coal and gas outburst experimental apparatus is developed to allow investigating the gas-driven mechanism behind the disaster caused by coal and gas outbursts in tectonic regions. The apparatus can simulate the coal and gas outbursts under different initial geo-stresses, gas pressures and temperatures. By integrating acoustic emission sensors in the holes on axial platens, acoustic signals from coal samples during the whole test can be monitored. A series of testability experiments were conducted on the developed apparatus to verify its performance. The damage characteristics and outburst occurrence of raw coal under different gas pressures were experimentally studied and that provided a more complete theoretical basis for coal and gas outburst. The degree of fragmentation of coal samples and the mass proportion distributions of the outburst pulverized coal after outbursts under different gas pressures were analyzed, as a reference for exploring the evolutionary characteristics of coal and gas outburst with gas-driven action.
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收藏
页数:13
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