Study of coal and gas outbursts by numerical modeling approach  

作　　者：李胜 张宏伟 

机构地区：[1]College of Resource and Environment Engineering, Liaoning Technical University, Fuxin 123000, China [2]School of Resource and Environment Engineering, University of Science and Technology Beijing, Beijing 100083, China

出　　处：《Journal of Coal Science & Engineering(China)》2007年第4期497-499,共3页煤炭学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China （50474010）; China Postdoctoral Science Foundation（2005038319）; Natural Science Foundation of Liaoning （20061075）; Educational Science Foundation of Liaoning （05L177）

摘　　要：Abstract During mining or road-way development, the distribution of stress and coal pore pressure in the coal face and rib around the new opening will change, under certain conditions, dynamic failure of coal in the form of an outburst can occur. In the modeling studies presented in this paper, an outburst was considered to consist of three distinct stages： preinitiation, initiation and post-initiation, which takes into account the major processes and mechanisms that can influence both outburst-proneness and post-initiation outburst behavior. The model has been applied to simulate the effects of mechanisms in the coal matrix, coal strength, coal damage, geological structures on outbursts. The model constructed using the FLAC software, which were undertaken to research the effects on outbursts of coal strength pressure gradient, and other factors.

关 键 词：coal and gas outbursts numerical modeling FLAC 

分 类 号：TD7[矿业工程—矿井通风与安全]