西天河下控水安全开采优化分析与评价  

Optimized analysis and assessment of water controlled safety mining under Xitian River

作　　者：李玉民[1] 任奋华[1] 

机构地区：[1]北京科技大学土木与环境工程学院

出　　处：《煤炭科学技术》2006年第8期4-7,共4页Coal Science and Technology

摘　　要：西天河下L3414工作面由于开采扰动,砂岩含水层下大尺度采空区围岩特性和应力状况都发生改变,给矿井生产带来巨大的安全隐患。基于现场全面的地质调查以及综合的力学试验结果,定量分析了河床下基岩柱断裂空间特征,划分了开采影响范围内覆岩类型,最后对采空区覆岩断裂高度进行了定量预计,并最终实现了安全开采。Due to the mining turbulence, the surrounding rock characteristics and stress status ot the large scale goal under sandstone water bearing stratum of the L3414 coal mining face under Xitian River were all changed, which would cause great potential safety risks to the mine production. Base on the site full geological survey and comprehensive mechanics test results, the paper quantitatively analyzed the broken space characteristics of the base rock pillars under river bed. The paper classified the above roof rock types influenced to the mining area. In the final, the paper quantitatively estimated the breaking height of the above roof rock in the goaf. A safety mining operation was obtained finally.

关 键 词：大尺度采空区 定量预计 控水安全开采 

分 类 号：TD823.83[矿业工程—煤矿开采]