摘要
文章应用FLAC3D模拟计算超长工作面的矿压显现规律。工作面加长以后,来压步距缩短,周期来压缓和,工作面中部的压力大于两端的压力。随着工作面的推进,上方压力拱逐渐变大,超前压力越来越大。工作面后方40m左右,老顶以上岩层垮落下沉。矿压对顺槽保护煤柱的影响也减小。
the mine pressure behavior of the long face is calculated by FLAC3D simulation after lengthening the face, the pressure step is shortened, the cycle pressure is ease, the pressure of the face is larger in the central than at both ends. With the advancing of the face, the pressure arch at the top gradually becomes large, the ahead pressure becomes larger and larger. Around 40m behind the face, the rock above the old top caves and collaps. The impact of mine pressure to the protective pillars reduced in the crossheading.
出处
《煤炭技术》
CAS
北大核心
2010年第4期61-63,共3页
Coal Technology
