煤层底板寒灰上段隔水性能及水文地质结构特征  

The Water Isolating and Hydrogeological Structure Characteristics for Upper Member of Cambrian Limestone in Coal Floor

作　　者：徐智敏[1] 孙亚军[1] 隋旺华[1] 张国伟[1] 李示[1] 黄鑫磊[1] 

机构地区：[1]中国矿业大学资源与地球科学学院,江苏徐州221116

出　　处：《采矿与安全工程学报》2010年第3期399-403,共5页Journal of Mining & Safety Engineering

基　　金：国家重点基础研究发展计划(973)项目(2007CB209400)

摘　　要：通过7个探查钻孔查明了豫中某井田煤层底板寒武系灰岩上段岩性、岩层组合关系以及岩溶发育—充填情况.随后,提出了"寒武系灰岩上段至少25 m层段岩溶不甚发育、且具有复杂组合关系的隔水层结构,可作为隔水层考虑"的重要认识,并在分析寒灰上段岩层的组合形式及其阻隔水作用的基础上对其综合阻隔水性能进行了评价.研究表明,将寒灰上段岩溶不发育段作为隔水层考虑将更符合实际.上述认识对该井田底板防治水工程的开展以及井巷的开拓等起到了非常积极的作用.The information of lithology, strata combination relation, and karst development and filling characteristics about the upper member of Cambrian limestone aquifer in a coal mine of central Henan province are obtained by 7 detecting boreholes. Subsequently, a viewpoint that at least 25m of the upper Cambrian limestone can be considered as aquifuge for its poor karst development characteristics and good impermeability with complex structure is proposed. Fur thermore, based on the strata combination form and water-resisting capability about the upper Cambrian limestone, the comprehensive water-resisting-isolating capability is evaluated. Owing to considering the existence of aquifuge member locating in the upper Cambrian limestone, the result, which is close to actual situation, has been successfully applied in that coal mine for its mine water-inrush prevention work.

关 键 词：寒灰上段 相对隔水性 底板突水 水文地质结构 安全开采 

分 类 号：TD745[矿业工程—矿井通风与安全]