不稳定煤层底板承压水综合探查与防治技术

Comprehensive Exploration and Control Technology of Floor Confined Water in Unstable Coal Seam

新安煤矿矿井水文地质类型极复杂,煤层赋存不稳定,开采受底板奥灰承压水影响较大。针对13151工作面水文地质条件,在不同时期通过利用地震勘探、瞬变电磁勘探和钻探等物理手段开展探采对比研究,形成了多指针聚焦型查异模式,有针对性地实施了疏水降压和底板注浆加固工程,并对不稳定煤层底板承压水综合防治技术进行了应用实践。

The hydrogeology types of Xin′an Coal Mine are complicated,the occurrence of coal seam is unstable,and confined water in the Ordovician limestone floor has a large effect to coal mining.According to the hydrogeology conditions of 13151 working face,the contrast of exploration and exploitation was researched by the psychical methods of seismic waves exploration,transient electromagnetic exploration and so on,the difference check model of the type of multi-pointer and focalization was also formed,groundwater drainage and depressurization and the project of floor grouting reinforcement were also carried out with special focus.In the end,comprehensive exploration and control technology of floor confined water in unstable coal seam was applied to the practice in Xin′an Coal Mine.