隔水关键层水文地质概念模型的建立与分析

Establishment and analysis on hydrological geology conception models of water-resisting key-stratum

水资源保护性煤炭开采是煤矿绿色开采的重要内容之一,也是目前我国煤炭开采迫切需要解决的重大课题。在分析结构关键层内涵的基础上,提出了广义隔水关键层和保水开采的基本概念;依据地层的含、隔水结构,得出隔水层的2种最基本模式。基于水文地质学和地层结构理论,提出了5种隔水关键层水文地质概念模型;得出了影响煤层顶、底板隔水关键层破坏的主要因素。表明在生态环境脆弱的西部矿区以及我国东部的大水矿区,充分利用隔水关键层的良好的隔水作用,能够实现保水开采。

Water - preserved mining is one of important contents of green - mining and also is an fundamental assignment to be solved in the course of mining. Based on analyzing the conception of structure key - stratum, the notion of generalized key - stratum and water - preserved mining was put forward. According to water - bearing and water - stop stratum structure, two basic water - stop stratum models were obtained. Based on hydrological geology and stratum structure theory, five hydrological geology conception models of water - stop stratum was presented and achieved main factors of influencing roof and floor water - stop key - stratum destroy. It has been demonstrated that sufficiently utilizing good action of water - stop key - sttatum, water - preserved mining could be realized in western mining area with vulnerable ecological environment and eastern mining area with large full -water.