摘要
分析了垂线法留设保护煤柱存在的问题,通过对垂线长度公式的改变,改进了留设保护煤柱的垂线法,使操作程序更为简化,更适于在数字化图上作业。
This paper analyzed the problem in designing protective coal pillar with vertical line method and improved the method by changing length formula of vertical line.The improved method makes calculation simple and adapted to map exercise.
出处
《煤矿开采》
北大核心
2010年第4期15-16,59,共3页
Coal Mining Technology
关键词
垂线法
保护煤柱
移动角
vertical line method
protective coal pillar
movement angle
