A Quantitative Prediction of Occurrence Risk of Outbursts of Coal and Gas with SimBurst-a Coupled Numerical Simulator
- 作者：Xue ShengWang YucangXie Jun
- 会议时间：2010-05-29
- 关键词：Outburst ; Numerical simulator ; SimBurst
- 作者单位：CSIRO Earth Science and Resource Engineering, PO Box 883, Kenmore, QLD, Australia 4069
- 母体文献：2010中国煤矿瓦斯治理国际研讨会论文集
- 会议名称：2010中国煤矿瓦斯治理国际研讨会
- 会议地点：合肥
- 主办单位：中国煤炭工业协会
- 语种：chi
摘要
An outburst of coal and gas in underground coal mines may occur when stress condition and coal failure combine with rapid gas desorption.A mechanical and fluid coupled numerical simulator, SimBurst, has been developed to simulate the initiation process of the outburst, as a first step to model the whole process of the outburst.This paper describes the simulator and a simple model set up to model the initiation of an outburst in roadway excavation to illustrate the methodology and approach with the SimBurst.The model simulated the basic features of an outburst initiation process, including coal deformation, pore pressure and principal stress vector redistribution, yield and tensile failure zone of coal, and a quantitative relationship among critical gas content, stress regime and coal strength.