受底板富水层威胁的急倾斜煤层水害分析

Water Disaster Analysis of Steep Inclined Coal Seam Threatened by Rich Water Layer

急倾斜煤层受底板富水层威胁,能否实现安全开采取决于底板隔水层的有效隔水能力,而其有效隔水能力又直接相关于底板破坏特征及深度。通过对底板破坏规律的分析,采用弹塑性力学原理预测底板破坏深度,运用突水系数对底板隔水层实行区域划分,并以可采区资源量为基础,进行开采技术经济分析,得出开采损益的结论。

Steep inclined coal seam is threatened by water-rich layer,so whether the safety mining can be realized or not depends on the effective waterproof ability of floor aquifuge which is related to floor failure characteristic and depth.Based on the analysis of the law of floor damage,we predicted the depth of floor damage by elastic-plastic mechanics theory and divided floor aquifuge into regions by water bursting coefficient.In addition,we also carried on the technical and economic analysis based on recoverable resources and got the conclusion of mining profit and loss value.