近距离煤层联合开采的矿压观测

The Observation of Mine Pressure while Seam Combined Mining with Short Distance

煤层间距离的不同,开采时相互的影响也随之有很大不同。尤其是当煤层间距很小时,上部煤层的开采会破坏下部煤层顶板的整体性;顶板上方又为上部煤层的采空区,充满了垮落的矸石以及上部煤层开采时遗留下的留设煤柱。所以下部煤层开采时的顶板结构和应力环境均发生了变化。本文就通过对某矿的近距离煤层联合开采时的矿压进行观测研究,进而得出该矿近距离煤层联合开采时的矿压规律。

The distance between coal seams is different,mining mutual influence also will be very different.Especially when the coal seam pitch is very small,the upper coal seam mining will destroy the integrity of the lower seam roof,the roof above the upper seam is mined-out area,full of coal pillars left in breaking down waste rock,as well as the upper seam mining Retain,mining of the lower seam roof structure and stress environment changed.So there are many new problems when the joint exploitation of the Seams.