李家壕近距离同采煤层工作面合理错距研究  

Rational Alternate Research on Simultaneous Mining Faces in Lijiahao Close Distance Seams

作　　者：张春雷[1] 李福胜[1,2] 刘金凯[1] 张世青[1] 赵健健[1] 许力峰[1] 

机构地区：[1]中国矿业大学(北京),北京100083 [2]神华集团包头矿业有限责任公司,内蒙古包头017000

出　　处：《煤矿安全》2014年第3期38-41,共4页Safety in Coal Mines

基　　金：国家重点基础研究发展计划(973计划)资助项目(2011CB201204)

摘　　要：结合神华李家壕煤矿的具体地质条件,为了达到矿井设计生产能力,决定对2-2和3-1近距离煤层群进行同时开采,为了减小2层煤同采时工作面超前支承压力的相互叠加影响,使下位3-1煤层处于上位2-2煤层开采后的减压区,保证2层煤同采时的安全生产,采用理论分析和数值模拟相结合的方法,得出了同采时的工作面合理错距,并在现场实践中取得了良好的应用效果。Combining with actual conditions of Lijiahao Coal Mine, in order to achieve the design capacity of mine production, simulta- neous mining was carried out in 2 - 2 and 3 - 1 close distance seam group. In order to reduce the mutual superposition influence of two mining faces from abutment pressure, the 3 - 1 lower coal seam was located in the decompression zone of 2 - 2 upper coal seam, which ensured safety production of the two coal seams. Using theoretical analysis combined with numerical simulation, rational alternate dis- tance of mining faces is confirmed. And there is a good effect in practice.

关 键 词：近距离煤层 同采工作面 合理错距 数值模拟 支承压力 

分 类 号：TD823.81[矿业工程—煤矿开采]