煤矿保水开采技术现状及其发展

针对采煤过程对区域水文地质的影响和对地下水资源的破坏问题,论述了煤矿顶板水保水开采的理论基础、主要影响因素和技术研究现状,并介绍了陕西榆林市榆阳区煤矿保水开采的成功经验。研究结果表明,根据关键层理论、开采对岩层移动影响及离层规律和水在裂隙岩体中的渗流规律等理论,通过留设防水煤柱、充填开采和注浆加固等方法,抑制岩层导水裂隙带的发育和隔水关键层的离层和断裂,控制岩层潜水的渗流速度是解决煤炭生产中水资源破坏问题的根本方法,具有良好的经济和社会效益。 

Present situation and development of water-preserved mining technology

Aiming at the influence of coal mining on regional hydrogeology and destruction of groundwater re-sources,the paper discussed the theoretical basis,major influencing factors and research status of roof wa-ter-preserved mining in coal mines,introduced the successful experience in Yuyang mining area.The research re-sults indicated that on the basis of key layer theory,influence of mining on strata displacement,layer separation regularity,water seepage regularity in fracture rocks,through reservation of water-resisting pillars,backfill mining and reinforcement by grouting,the control of the development of water-conducting fracture zone,separation and rupture of water-resisting key layer,phreatic water seepage velocity is the radical method to solve the problem of the destruction of water resources during coal production and has good social and economical benefits.