综放开采合理护巷煤柱宽度研究  

Study on rational width of gateway protecting coal pillar in fully mechanized top caving mining face

作　　者：张少杰[1] 王金安[1] 吴豪伟[1] 朱占东[1] 

机构地区：[1]北京科技大学金属矿山高效开采与安全教育部重点实验室,北京100083

出　　处：《中国矿业》2012年第3期52-55,共4页China Mining Magazine

基　　金：国家重点基础研究发展计划"973"项目资助(编号:2010CB731500);国家高技术研究发展计划"863"项目资助(编号:2008AA062104)

摘　　要：根据新柏矿"两软一硬"复合顶板的5#煤赋存状况,通过理论分析和数值模拟,对不同煤柱宽度时沿空掘巷系统围岩应力分布和破坏特征进行了研究,对不同煤柱宽度时的巷道系统进行了综合分析和评价,确定了相邻工作面区段沿空掘巷留设煤柱的合理宽度,对类似综放沿空掘巷煤柱合理宽度的确定具有参考价值。In view of the occurrence condition of soft roof and floor with hard 5 coal seam in Xin-bai Colliery of Tuating Coal Field, the stress distribution and the failure characteristics in surrounding rocks of roadway were studied with respect to different pillar widths using theoretical analysis and numerical simula- tion. Through the general analysis and assessment on stability of the roadway system protected by the pillar with different widths, the reasonable pillar width was determined for roadway driving along gob between adjacent working surface sectors, which provides reference to the determination of reasonable position of similar roadway driving along gob.

关 键 词：沿空巷道 煤柱宽度 煤柱稳定性 

分 类 号：TD32[矿业工程—矿井建设]