分析黔西发耳矿区的开发地质条件,基于煤储层可采性对多煤层开发层段进行优选,建立可动资源指数评价指标,并依据该指标开展了多煤......

In order to ensure safe mining and reduce surface damage in shallow multi-seam mining,the failure characteristics of int......

针对穿多煤层条件下测定煤层瓦斯压力时存在的钻孔封孔段密闭问题、所穿多煤层段松软孔壁垮塌问题以及由于多煤层孔壁裂隙连通造成......

To explore the impact of lateral stress concentration in interlayer rock stratum on the exploitation of protected coal s......