含水层下固体充填保水开采方法与应用

发布时间：2018-05-21 21:19

本文选题：含水层 + 固体充填开采　；参考：《煤炭学报》2017年01期

【摘要】：为解决含水层下煤层开采所导致的溃水灾害问题,提出了基于固体充填采煤的保水开采方法,阐述了该方法的基本原理,分析了固体充填开采覆岩导水裂隙演化特征,并基于固体充填开采导水裂隙带高度预计公式,结合《建筑物、水体、铁路及主要井巷煤柱留设与压煤开采规程》,建立了含水层下固体充填开采临界充实率计算模型,分区设计了受含水层影响煤层的充实率,进而对煤层进行了充填工作面设计布置。五沟煤矿CT101充填工作面应用结果表明:实测充采质量比平均值为1.32,大于理论设计值1.28,充填效果较好,且导水裂隙带高度仅为10.0 m左右,该方法有效地降低了覆岩导水裂隙带高度,可实现含水层下保水开采的目标。
[Abstract]:In order to solve the problem of water collapse caused by coal seam mining under aquifer, a water retaining mining method based on solid filling coal mining is put forward, the basic principle of this method is expounded, and the evolution characteristics of water conductivity fractures of overburden rock in solid filling mining are analyzed. Based on the prediction formula of the height of water-conducting fissure zone in solid filling mining, combined with the rules of Coal Pillar retention and Coal Mining in buildings, Water bodies, Railways and main roadways, a calculation model for critical enrichment rate of solid filling mining under aquifer is established. The filling ratio of coal bed affected by aquifer is designed and the design arrangement of filling face is carried out. The application results of CT101 filling face in Wugou Coal Mine show that the average value of the measured filling quality ratio is 1.32, which is larger than the theoretical design value of 1.28, and the filling effect is better, and the height of the water-conducting fissure zone is only about 10.0 m. This method can effectively reduce the height of the overburden water conductivity fracture zone and realize the goal of water conservation mining under the aquifer.
【作者单位】：中国矿业大学深部煤炭资源开采教育部重点实验室;中国矿业大学矿业工程学院;
【基金】：国家自然科学基金创新研究群体资助项目(51421003) 江苏省特聘教授资助项目(苏教师(2015)29号)
【分类号】：TD823.7

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