大型水库库区下压煤开采对其安全影响评价  

Evaluation of Safety of Mining Underlarge Reservoir Area

作　　者：武雄[1] 汪小刚[2] 段庆伟[2] 李新强[2] 于青春[1] 杨健[2] 张莉丽[1] 

机构地区：[1]中国地质大学水资源与环境工程北京市重点实验室,北京100083 [2]中国水利水电科学研究院,北京100044

出　　处：《中国矿业大学学报》2007年第6期723-727,共5页Journal of China University of Mining & Technology

基　　金：国家自然科学基金(40602036);水利部科技创新项目(Scxc2005-11)

摘　　要：在前人研究成果的基础上,采用现场调研、室内试验、数值计算相结合的综合方法,研究了开采沉陷对大坝安全的影响、压煤开采引发库区渗漏及库水位骤降的可能性及对库区渗流场的影响.结果表明:压煤开采引发的最大地面塌陷范围距离大坝约5 km,不会影响大坝的安全运行;"两带"发育高度最大为85 m,防水安全煤(岩)柱留设合理,不会引发库区水体渗漏;压煤开采引发的库区渗流场变化很小,不会对大坝安全造成影响.Based on the previous achievements, the effect of mining subsidence on the safety of the dam, the possibility of leakage and rapid drawdown of water level in the reservoir by mining pressed coal and the influence of mining pressed coal on the seepage field were investigated by the synthesis method combined with field-survey, indoor-test and numerical simulation. The results show that the distance is about 5 km from the maximum surface subsidence boundary to the dam by mining and it can not affect the safe operation of the dam; the maximum developmental height of ＂two belts＂ is 85 m and it is reasonable to remain the waterproof coal （rock） pillar which can not generate the leakage of water body in the reservoir area; the movement of the seepage field is little in the reservoir by mining which can not affect the safety of the dam.

关 键 词：压煤开采 大型水库 安全评价 地表塌陷 渗流 

分 类 号：TD807[矿业工程—矿山开采]