南方煤矿特殊开采条件下的突水机理分析

Analysis of water-inrush mechanism based on the special mining conditions of southern coal mines

在南方煤矿特殊开采条件下,其断层岩溶突水具有与北方煤矿不同的特点,开展南方煤矿岩溶突水的机理与相关对策研究是非常有必要的.探讨了南方岩溶矿区开采及地质特点,得出了南方岩溶突水是由于断层和隔水煤岩层厚度等原因引起的;以一现场突水为例,分析了突水原因,并从理论上进行防水煤岩柱合理宽度的验算;针对南方岩溶矿区的突水特点,从技术和管理上给出了防治突水的基本对策.

Karst water-inrush in special mining conditions of southern coal mines has some different characteristics from the northern coal mine＇s water inrush,then it is very necessary to study karst water-inrush mechanism and related countermeasures in southern coal mine.Based on the geological and mining characteristics in southern karstic districts,the karst water-inrush was dependent on the thickness of hydrologic barrier.A field water inrush case was analyzed,and the reasonable width of hydrologic barrier was theoretically calculated.According to the water-inrush characteristics in southern karstic districts,the fundamental countermeasures in management and technology to prevent from water-inrush have been proposed.