不同长度切眼综采工作面矿压显现对比分析

Comparative Analysis of Strata Behavior at Fully-mechanized Mining Face with Open-off Cuts of Different Length

随着综采工作面切眼长度的增加,导致巷道中的支承压力分布状况与原有长壁工作面存在较大差别,而支承压力分布往往决定着巷道围岩的稳定性,通过在巷道中部选择测试点用十字测点法进行矿压观测,对比分析黄陵一矿623和621两个不同切眼长度的综采工作面,为后期采用261 m长切眼工作面提供参考。

With the increase of open-off cuts＇ length at fully mechanized miningface, the distribution of support pressure at the roadway is very different from that of the original long-wall working tace, which often determines the stability of the surrounding rock at roadway. By cross testing point method in the middle of the roadway, the authors compare and analyze the strata behavior at 623 and 621 fully mechanized mining faces with different open-off cut lengths in Huangling No.1 Colliery, which provides reference for later adoption of＇ 261-meter- long open-off cut at working face.