沁水煤田浅埋深沿空留巷围岩变形规律分析

Analysis of Surrounding Rock Deformation Law of Gob-side Retained Roadway in Qinshui Coalfield with Shallow Depth

针对山西煤炭进出口集团鹿台山煤业有限公司需要实施沿空留巷的实际情况,结合巷道周围的地质条件,通过理论分析,基于切顶卸压预裂爆破顶板技术,提出了切顶卸压沿空留巷支护方案,并连续观测工作面回采期间巷道围岩的变形数据,总结了切顶卸压沿空留巷矿压显现规律特征。

Aiming at the actual situation that Lutaishan Coal Industry Co.,Ltd.of Shanxi Coal Imp.&Exp.Group needs to retain roadway along goaf,combining with the geological conditions around the roadway,this paper put forward the support scheme of roof-cutting decompression along goaf retaining roadway through theoretical analysis and using the technology of roof-cutting decompression pre-splitting blasting,and continuously observed the deformation data of roadway surrounding rock during the mining period of the working face,summarized the characteristics of mine pressure appearance in retained roadway by roof-cutting decompression.