复杂条件下煤层底板突水防治对策探讨

Measures for Prevention of Water Inrush From Coal Floor Under Complex Conditions

根据我国华北岩溶矿区大采深、高水压、高应力的复杂条件现状,从降低奥灰水压、提高煤层底板阻水能力和减小煤层底板破坏度三个层面探讨了防止煤层底板突水的对策,并对各种对策在实际运用时的适宜性进行了分析,提出了以奥灰局部降压、底板注浆加固、充填开采、奥灰顶部局部注浆加固相结合的综合防治水对策,对我国复杂条件下实现深部煤层开采具有重大现实意义。

For North China Karst mine mining depth, high pressure, high stress status of complex conditions, from the lower Ordovician limestone water pressure, coal seam floor water-blocking ability and reduce the coal seam floor failure three levels to explore prevent inrush from coal floor watercoantermeasures, and the suitability of the various measures were analyzed, local pressure, Ordovician limestone floor grouting, backfill mining, Ordovician limestone top local grouting reinforcement combination of comprehensive controlling countermeasures for our eountrydeep coal mining complex conditions of great practical significance.