马兰矿复杂构造下工作面综合防治水技术

Comprehensive water prevention and control technology of working face under complex structure in Malan Mine

为解决马兰矿8号煤层18502工作面带压开采的安全问题,通过综合物探技术,查明了采区内奥灰含水层的富水特征及构造的导水性,并利用数值模拟及突水系数评价,得出奥灰含水层有一定的突水危险性。基于采区内的水文地质条件,提出了设置断层隔水煤柱及底板注浆加固的综合防治水措施,保证了工作面安全带压开采。

In order to solve the safety problem of mining under pressure in No.18502 face of No.8 coal seam in Malan Mine,through comprehensive geophysical exploration technology, the water abundance characteristics of the Ordovician limestone aquifer and the water conductivity of the structure in the mining area were identified. And it was concluded that the Ordovician limestone aquifer had a certain risk of water outburst by using numerical simulation and water outburst coefficient evaluation. Based on the hydrogeological conditions in the mining area, the comprehensive water prevention and control measures of setting fault waterproof coal pillar and floor grouting reinforcement were put forward, which ensured the safe mining under pressure.