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在密集建筑物群(如市镇、矿区工人村)下采煤时,为保护地面建筑物免遭破坏,常用的开采措施之一是采用条带采煤法。条带采煤法的实值是采出一条带,保留一条带,利用所留条带煤柱以支撑上复岩层,减少地表移动和变形,从而减少对建筑物的有害影响,以利保护建筑物。本文从应力分布角度利用有限元法研究条带的采宽、留宽、采出率和当近距煤层条采时上下煤柱对齐等问题。
When mining under densely populated building blocks (such as towns and villages of miners), one of the most common mining measures used to protect ground structures from damage is the strip mining method. The real value of the strip mining method is to take a strip, to retain a strip, using the stripped pillar to support the upper strata, reducing surface movement and deformation, thereby reducing the harmful effects on the building in order to facilitate the protection of the building Things. In this paper, we use the finite element method to study the width, width and recovery ratio of the strip and the alignment of the upper and lower coal pillars when mining near the coal seam from the stress distribution point of view.