近距离煤层采空区下掘进巷道支护技术研究

中煤平朔井工二矿21107主运顺槽沿11号煤层底板布置,上为29207采空区,巷道顶板距采空区间距在2.1-6.0m之间,属于近距离煤层采空区下的掘进巷道。文章论述了该巷道掘进过程中在不同层间距下的支护方法和矿压显现规律分析,为类似条件下回采巷道的布置和围岩控制技术积累了经验。

CCPS Mine two mine 21107 main transport along the trough along the No. 11 coal seam floor layout, for 29207 mined - out area, mined -out area of roadway roof pitch spacing between 2.1 - 6.0m, belongs to the close distance coal seam mining roadway under gob. This paper discusses the analysis of the tunneling process in different layer spacing supporting method and law of rock pressure, accumulated experience for roadway under similar conditions and surrounding rock control technology.