红层岩土体中含有可溶成份,在水的作用下容易发生岩溶、渗流等,为地表水体进入煤矿的良好通道。铁箕山煤矿2次淹井事故的渗透通道都是红层溶洞,对其进行了研究分析,并通过河床改道消除隐患。 The red stratum contains soluble components, which are prone to karstification and seepage under the action of water, which is a good channel for surface water to enter the coal mine. The infiltration channels of the two submerged wells in Tiejiishan Coal Mine are all red beds, which are studied and analyzed, and hidden dangers are eliminated through diversion of the riverbed.