钱家营矿西翼热害地质成因探讨

On geologic genesis of heat-hazard in west wing of Qianjiaying Mine

针对钱家营矿西翼出现热害现象,结合地面钻孔测温,分析了钱家营井田的地质状况及井下水样水质,阐述了钱家营矿各含水层的水力联系,揭示了造成钱家营矿西翼热害的地质控制因素和热源。得出钱家营矿热害主要位于井田西翼东部,钱家营矿热源为燕山晚期岩浆岩侵入对围岩进行了加热,以及深部的奥灰水上涌,将深部热量带入煤系地层;钱家营矿特殊的地层结构、构造特征以及水文地质条件为热量的保存提供了良好条件。

Aiming at the heat-hazard phenomena in west wing of Qianjiaying Mine, combi- ning with ground borehole measured temperature, the paper analyzes the geological conditions and water quality of underground water samples. Through experiments, it elaborates the hydrau- lic connections between the aquifers in Qianjiaying Mine and reveals the geologic genesis of the heat hazard and the heat sources in west wing of Qianjiaying Mine. The above study shows that heat hazard zones mainly locate in eastern west wing in Qianjiaying Mine; the intrusive magmatic rocks of late Yanshanian period make the surrounding rocks heated, and deep Ordovician lime- stone water upwelling takes the deep heat into the coal strata, which compose the heat sources; the special strata configuration, structure characteristics and hydrogeological conditions of Qian- jiaying mine provide perfect conditions for holding heat.