摘要
护巷煤柱能够有效地支承沿空掘巷的围岩应力,但是它存在合理确定护巷煤柱宽度大小的问题,通过数值模拟护巷煤柱影响巷道稳定性的垂直应力分布,分析护巷煤柱的合理宽度,并结合顾桥矿11~#煤的运输顺槽的现场实践,得出:护巷煤柱的宽度在10~12 m,巷道围岩应力向侧帮转移的效果最理想。
Coal pillars can effectively support the surrounding rock stress of gob-side entry along the roadway, but it has the problem of reasonably determining the width of pillars. The vertical stress distribution of roadway pillar influenced by roadway pillar is numerically simulated, and the reasonable width of roadway pillar is analyzed. Combined with the field practice, of 11^# coal transport crossheaching in Guqiao mine, draw a conclusion： the conclusion is that the width of the roadway pillar is 10 m to 12 m, and the effect of the surrounding rock stress of the roadway is the best.
出处
《煤炭技术》
北大核心
2017年第8期58-60,共3页
Coal Technology
关键词
沿空掘巷
煤柱
垂直应力
driving roadway along goaf
coal pillar
vertical stress
