南梁煤矿区段煤柱留设宽度优化设计  

Optimization Design on Section Coal Pillar in Nanliang Coal Mine

作　　者：张杰[1] 付二军 田云鹏[1] 李志雄 赵淑慧 

机构地区：[1]西安科技大学能源学院,陕西西安710054 [2]南梁矿业有限责任公司,陕西府谷719400

出　　处：《煤炭工程》2015年第7期15-17,共3页Coal Engineering

基　　金：国家自然科学基金资助项目(51204133;51474173);陕西省教育厅重点实验室科研计划项目资助(13JS065)

摘　　要：为优化南梁煤矿区段煤柱宽度,通过对20m区段煤柱应力进行现场应力监测表明,20m区段煤柱未达到煤柱的破坏强度,煤柱尺寸有减小的潜力,并采用数值模拟分别对留设煤柱宽度为15m、14m、13m、12m时的煤柱应力、塑性区进行分析,模拟结果表明,在煤层埋深135m的条件下,14m的区段煤柱稳定,其应力峰值小于煤层长时强度,区段煤柱核区率大于65%保持稳定;而13m的区段煤柱容易发生失稳。The width of section coal pillar in Nan Liang Coal Mine was optimized, the in- situ stress observation of 20m section pillar showed, the width can be reduced. The coa pillar stress and plastic zone were analyzed through numerical simulation with the pillar width of 15m, 14m, 13m and 12m. The results show that, under the coal seam depth of 135m, the 14m section coal pillar is stable, with its peak stress less than the long term strength of coal seam, and the coal pillar core rate over 65%, while the 13m section coal pillar is not. The study offers references for coal pillar preserving in similar coal mining areas.

关 键 词：区段煤柱 煤柱稳定性 煤柱强度 应力监测 

分 类 号：TD822.3[矿业工程—煤矿开采]