水库坝体下综放开采安全性研究  

Safety of Fully Mechanized Top Coal Caving under Dam of Reservoir

作　　者：任丽泉[1] 黄玉凯[2] 白国良 REN Li-quan;HUANG Yu-kai;BAI Guo-liang(Tangshan Professional Technology School, Tangshan 063000, China;Shenhua Baorixile Energy Co. , Ltd. , Hulun Buir 021000, China;CCTEG Tangshan Research Institute, Tangshan 063012, China)

机构地区：[1]唐山职业技术学院,河北唐山063000 [2]神华宝日希勒能源有限公司,内蒙古呼伦贝尔021000 [3]中国煤炭科工集团唐山研究院有限公司,河北唐山063012

出　　处：《煤矿开采》2016年第6期61-64,共4页Coal Mining Technology

基　　金：“十二五”国家科技支撑计划重点项目(2012BAC13B03)

摘　　要：水库坝体下特厚煤层开采存在井下安全生产和水库坝体稳定等问题,结合煤炭开采工程对三台子水库下综放开采进行了研究,结果表明:三台子水库下最小采深远大于工作面开采形成的导水裂缝带高度与保护层厚度之和,满足防水煤岩柱留设要求,水库下采煤是安全的;采动影响下坝体在局部可能产生裂缝,但坝体在采动过程中始终具有足够的强度,开采后水库坝体是稳定的,三台子水库坝体下开采是安全的;根据预测坝体最大下沉值为7878mm,坝高7.00m,水库坝体采取加高加固处理措施可正常发挥水库的功能。To the problems of underground production safety and reservoir dam stability of extra thick coal seam mining under dam ofreservoir, then fully mechanized top coal caving under Santaizi reservoir was studied with coal mining engineering. The research resultsshowed that the minimal mining depth under Santaizi reservoir was far greater than the summing of water fractured zone height that inducedby working face mining and protective layer thickness, its meet the demand of waterproof coal and rock pillar set, mining underreservoir was safety, but fractures would appeared in some local area of dam as mining influence, but the strength of dam could meetsafety demand during mining process, reservoir dam was stability after mining, the maximal subside value was 7878mm, dam heightis 7m, and reservoir could be used normal after heightened reinforcement measures.

关 键 词：水体下采煤 综放开采 特厚煤层 导水裂缝带 坝体稳定性 

分 类 号：TD823.83[矿业工程—煤矿开采]