综采与机掘巷道交锋时支护技术研究

Research on Supporting Technology for the Interaction Between Fully Mechanized Mining and Mechanized Roadway

燕子山矿4^#综放工作面为动压开采,临空巷矿压显现强烈,在实践生产中,302盘区5210巷与8212工作面形成相向采掘交锋,原有支护难以对围岩变形量进行有效控制。通过对掘进巷道锚杆、煤柱留设宽度、回采工作面溜子道等支护参数重新设计,有效缓解了围岩变形程度,实现了工作面安全过交锋地。

The No.4 fully mechanized caving face of Yanzishan Coal Mine is mined under dynamic pressure.The mine pressure of empty roadway is strong.In practice production,the 5210 lane of 302 panel and the 8212 working face form a face-to-face mining.It is difficult for the original support to effectively control the surrounding rock deformation.By redesigning the bolts of the roadway,the width of the coal pillars,and the support parameters of the slippery roadway,the deformation degree of surrounding rock is effectively alleviated and the safe overlap of working face is realized.