RESEARCH ON PREDICTION OF INSTABILITY FAILURE FOR GASSY COAL BASED ON MICROSEISM
In this paper, according to the rock failure damage theories and the gas-solid coupling method, RFPA2D-GasFlow soft code is used to investigate the distribution characteristics of microseism for gassy coal in failure process. Herein, the distribution characteristics of microseism in time and space prediction potential failure danger area are considered. Simulation results show that there is some microseism precursory before the main shock, which is calculated based on the characteristics of microseism in time. The characteristics of microseism precursory made by tension stress in space can be used to divide potential failure danger areas. It is found that the potential failure danger area is consistent with crack initiatory zones by contrasted potential failure danger area to crack development process. Therefore, the development of cracks can by prevented through taken precautions and cure measures to prevent potential failure danger area; consequently preventing the occurrence of mine disasters.
DONG DUAN CHUN-AN TANG XIAO-JING FENG LIE-XIAN TANG
School of Resources and Civil Engineering, Northeastern University Shenyang, 110004, P.R China School of Civil and Hydraulic Engineering, Dalian University of Technology Dalian, 116024, PR China Shenyang Branch of China Coal Research Institute Shenyang, 110016, P.R China Dalian Mechsoft Co., Ltd., Dalian, 116622, P.R China
国际会议
The 7th International Symposium on Rockburst and Seismicity in Mines(2009年第七届国际岩爆与微振动性学术研讨会)
大连
英文
1197-1204
2009-08-21（万方平台首次上网日期，不代表论文的发表时间）