不渗透断层与瓦斯灾害防治  

Impermeable faults and prevention of gas hazards

作　　者：崔洪庆[1] 姚念岗[1] 

机构地区：[1]河南理工大学安全科学与工程学院,河南焦作454000

出　　处：《煤炭学报》2010年第9期1486-1489,共4页Journal of China Coal Society

基　　金：河南省基础与前沿研究项目(092300410211)

摘　　要：通过煤与瓦斯突出的实例和长壁回采工作面瓦斯抽采数值模拟实验结果,从理论和实践上说明了低渗透性煤层中压性或压扭性断层可能形成不渗透断裂带,使煤层瓦斯抽采不均衡,以致在不渗透断层两盘煤层间可能存在高瓦斯压差和高瓦斯含量差的现象。提出采掘巷道跨越断层进入断失盘煤层时,不论断层落差的大小,均应加强对不渗透断裂带的预测和探测,采取必要措施消除前方可能存在的高瓦斯压力差之后,才能实施采掘作业。Used a practical example of outburst accident and numerical simulation of gas extraction in longwall panel to illustrate theoretically and practically that compressing or compress-shearing faults in low permeable coal seam could induce impermeable fracturing zones,which result in inhomogeneous gas drainage,high gas-pressure-difference and gas-content-difference between hanging wall and footwall of the impermeable faults after degasifying a coal seam.It is presented that intensified prediction and exploration of impermeable faults should be carried out,and necessary safety precaution to eliminate potential high gas-pressure-difference and gas-content-difference around impermeable faults should be applied to prevent coal and gas outburst hazards before roadway is heading across them,regardless of fault throw scales.

关 键 词：不渗透断层 瓦斯灾害 瓦斯抽采 不渗透断裂带 防治措施 

分 类 号：TD713.3[矿业工程—矿井通风与安全]