矿山水害分类与断层防水煤柱存在问题分析

根据涌水水源和渗透通道的匹配关系,地下矿山水害有透地表水和断层透水等7种可能的透水形式,可归纳为顶部透水、同层位透水和底板突水等3种透水类型。在采掘工作空间和涌水水源之间留设一定宽度的隔水煤岩柱来防止水害的出现和蔓延,是目前国内外最常用的防治水措施之一。结合断层防水煤柱的推导,对现阶段断层防水煤柱存在的主要问题进行了全面分析,指出隔水煤柱的设计应充分考虑煤体软化、压力水与煤体的相互作用以及矿山压力作用下的煤柱分区等相关问题。

Mine Water Disaster Classification and Problems Analysis on Fault Waterbarrier

According to the match relationship between water inflow source and seepage path, break - through, namely, water break - through at top, water break - through in the same horizon and water gush - out at invert. At present, one of the most common water prevention measures is to reserve waterbarrier of a certain width between working space and water inflow source for the purpose of preventing occurrence and extension of water disaster. In this article, the author makes analysis on main problems about fault waterbartier at present stage in all -around aspects with the reference of derivation of fault waterbarrier, points out that the design of waterbarrier should fully consider coal body softened, and the interaction between pressure water and coal body, and related issues on the coalmining district under underground pressure.