综采工作面区段煤柱宽度优化设计研究

为了提高煤炭资源回采率,以3307综采工作面为工程背景,通过分析区段煤柱的破坏类型和机理,结合实际工程条件,将合理的区段煤柱宽度优化为25 m.通过观测巷道变形量,采动影响巷道围岩变形在合理范围内,靠近煤柱帮部未发生明显的片帮现象,煤柱的整体性良好.

Research on Optimization Design of Section Coal Pillar Width in Fully Mechanized Mining Face

In order to improve the recovery rate of coal resources,taking 3307 fully mechanized working face as the engineering background,the reasonable section coal pillar width was optimized to 25 m by analyzing the failure type and mechanism of the section coal pillars and combining the actual engineering conditions.By observing the deformation of the roadway,the deformation of the surrounding rock of the roadway affected by mining is within a reasonable range,and there is no obvious flaking phenomenon near the coal pillar bank,and the integrity of the coal pillar is good.