煤矿隐蔽特大突水通道快速封堵技术研究

2011年8月6日14时，临近黄河的韩城禹昌煤矿在11^#煤层回采过程中发生底板奥灰水突水，突水通过相邻煤矿采空区，并与8月7日零时5分许冲跨桑树坪煤矿北二车场绕道封闭墙进入斜井280m大巷，很快淹没整个大巷系统造成斜井整体淹井事故。在进行了井上、下水文地质调查、物探、钻探探查和示踪剂测试、水质化验与综合分析研究的基础上，初步确定了突水点与过水通道的区域，结合矿井11#煤层顶、底板、奥灰岩峰峰二段水文地质条件特征，采取了骨料灌注沉积法和松散体注浆加固法，成功隔离了两个矿井之间的水力联系。经过单位吸水率、追排水量、水位变化、残余出水量检验，达到了预期目的，实现了隐蔽突水点及过水通道快速封堵，为矿井全面恢复生产提供了重要保障。

Study on Coalmine Hidden Extraordinary Water Bursting Channel Instant Sealing Technology

On 14：00 August 6, 2011, the Yuchang coalmine, Hancheng near the Yellow River happened floor Ordovician limestone wa- ter bursting during the coal No. 11 winning. The water bursting passing through neighboring coalmine gob and washed away N2 pitbot- tom of the Sangshuping coalmine by pass blockade wall entered into incline 280m level main roadway about 00：05 August 7, quickly drowned the entire main roadway system causing the whole incline submerged. Based on surface and underground hydrogeological in- vestigation, geophysical prospecting, drilling and tracer detection, water quality testing and comprehensive analysis, initially identified water bursting point and water channel limits; combined with hydrogeological condition characteristics of coal No. 11 roof and floor, Or- dovician Fengfeng Formation second member, using aggregate packing deposition and loose material grouting consolidation, successful- ly isolated hydraulic connection between the two coalmines. Through unit absorption rate, drainage volume, water level variation and re- sidual water charge inspection have reached the desired effect, realized hidden water bursting point and water channel instant sealing and provided principal guarantee for coalmine to resume full production.