摘要
增大循环进尺,有利于减少准备时间、提高生产效率。结合寺河矿东六盘区地质条件,通过理论计算和数值模拟分析了不同空顶距下巷道围岩的受力和变形情况。研究结果表明,巷道中起主要支撑作用的为基本顶,在巷道空顶距为12 m时直接顶所受到的拉应力未超过抗拉强度,保持了顶板完整性。
Increasing the circular footage is conducive to reducing the preparation time and improving the production efficiency. Based on the geological conditions of the east sixth panel of Sihe Coal Mine, the paper analyzed the stress and deformation of roadway surrounding rock under different empty-support distance by theoretical calculation and numerical simulation. The results showed that the main supporting role playing in roadway was the basic roof, and the tensile stress of the direct roof did not exceed the tensile strength when the empty-support distance of roadway was 12 m, thus maintaining the integrity of the roof.
作者
暴雪峰
BAO Xuefeng(Sihe Coal Mine, Jincheng Anthracite Mining Group, Qinshui 048200, Shanxi, China)
出处
《能源与节能》
2019年第3期50-53,共4页
Energy and Energy Conservation
关键词
空顶距
围岩控制
塑性区
实体煤巷道
empty-support distance
surrounding rock control
plastic zone
solid-coal roadway
