煤矿安全2012，Vol.43Issue(9)：4-6,3.
石门揭露冻结煤层瓦斯突出过程的数值模拟
Numerical Simulation of Coal and Gas Outburst Process in Uncovering Frozen Coal Seam in Cross - Cut
摘要
Abstract
Aiming at a new- presented outburst prevention method by injecting liquid and freezing in uncovering coal seam in cross - cut, according to the relationship among the coal and gas outburst, the mechanical properties and coal seam freezing temperature, and combining with artificial freezing engineering practice, with the reek failure process analysis software - RFDA2D, the paper determines the model sizes and boundary conditions and establishes gas and solid coupling mathematics model of uncovering frozen coal seam in cross - cut. Setting the interrelated parameters of gas pressure, uniaxial compressive strength and elastic modulus of coal seam under freezing temperature, the paper simulates the process of uncovering 6# freezing coal seam in 2# cross - cut of - 400 levels in Longjias- hart mine under the different freezing temperature. The simulation shows that when the temperature of 6# frozen coal seam drops to - 15 - -20℃, the gas outburst risk of the working face in 2# rock cross -cut will be greatly reduced. Integrating freezing time, energy consumption and outburst prevention effect, -10℃ is selected as the frozen seam control temperature of the working face, which can improve the economic benefits of coal uncovering in cross - cut project of the gas outburst mines.关键词
石门揭煤/冻结煤层/煤与瓦斯突出/数值模拟Key words
uncovering coal seam in cross -cut/frozen coal seam/coal and gas outburst/numerical simulation分类
矿业与冶金引用本文复制引用
谢雄刚,冯涛,余照阳..石门揭露冻结煤层瓦斯突出过程的数值模拟[J].煤矿安全,2012,43(9):4-6,3.基金项目
贵州省教育厅自然科学重点资助项目[黔教科（2011）034号] （）
贵州大学教育教学改革研究资助项目[gdjg（2010）032] （）
贵州大学引进人才科研基金资助项目[贵大人基合字（2010）002号] （）
