“三软煤层”破碎顶板下综采工序改进浅析

“Three Soft Coal Seam” Broken Roof in Mining Process Improvement Analysis

告成矿位于郑州矿区"三软煤层"地质条件下,受滑动构造影响,造成构造带直接压煤,煤层厚度变化较大,煤层结构较为简单,顶板极破碎,直接底为砂质泥岩。回采过程中,采用端头割三角煤斜切式进刀,造成人工劳动强度大,窝工、复工现象经常出现,通过改进采煤工序,科学组织生产,在21051工作面取得了很好的效果,不仅提高了安全系数,同时也保证了高产高效。

In Gaocheng Coal Mine in Zhengzhou mining area “Three Soft” coal seam geological conditions ＆quot;, by the effect of slip structure, caused by tectonic belt direct pressure coal, coal seam thickness variation, coal seam roof structure is relatively simple, very broken, direct bottom is sandy mudstone. In the mining process, the end of the triangle coal oblique cutting feed, which increases the intensity of labor, idleness, restart phenomenon, through improving mining process, scientific organization of production process, and achieved good results, Not only improves the safety factor, but also to ensure the high yield and high efficiency.