“变堵为疏”防治水方案在赵家寨煤矿的应用

Application of "change plugging to dredging" water control scheme in Zhaojiazhai Coal Mine

赵家寨煤矿水文地质条件复杂,矿井12201运输巷机头段突水后,采取帷幕注浆和截流堵源的防治水措施,治水期间区内L1-4及O2灰岩水位急剧下降,疏水降压效果显著,致使原有突水点水量较少,以12205工作面运输巷为最,减至无水。通过该工作面的安全回采,其研究成果和开采经验为其他类似工作面的采掘活动提供了重要依据,具有良好的实用和推广价值。

The hydrogeological conditions of the Zhaojiazhai Coal Mine are complex.After the water burst in the head section of the mine′s 12201 down the lane,the water prevention and control measures of the curtain grouting and stoppage plugging sources are adopted.During the water treatment period,the water levels of the L 1-4 and O 2 limestone in the area have dropped sharply.The effect of water pressure relief is remarkable.As a result,the original water burst point has less water,with 12205 working face down to the lane as the most,and it has been reduced to no water.Through the safe recovery of the working face,its research results and mining experience have provided other similar working surface mining activities.Important basis.It has good practical and promotional value.