摘要
通过现场实测 ,得出了对浅埋煤层高产高效工作面顶板来压特征和不同推进速度的矿压显现规律。应用浅埋煤层老顶“台阶岩梁”理论定量化分析 ,揭示了快速推进时周期来压步距增大而压力减缓的机理 ,计算得出的工作面的合理支护阻力与实际情况相符 ,指导了支架选型。
The field investigations show that ground pressure of coal face with high productivity depends on face advance rate. Based on the theory of sidestep rock beam under shallow bury condition, the paper explains the mechanism of larger periodical distance of main roof while lower in pressure when increasing advance rate of coal face, which is helpful for the selection of support.
出处
《矿山压力与顶板管理》
1999年第3期53-56,238,共4页
Ground Pressure and Strata Control
基金
陕西省自然科学基金! ( 98D0 2 )资助
