水库下采煤安全性评价分析研究  

Analysis and research of safety evaluation of coal mining under reservoirs

作　　者：刘晓飞 裴书锋 原晓红[1] Liu Xiaofei;Pei Shufeng;Yuan Xiaohong(Zhengzhou Coal Industry(Group)Co.,Ltd.,Zhengzhou 450007,China;College of Geosciences and Engineering,North China University of Water Resources and Electric Power,Zhengzhou 450046,China)

机构地区：[1]郑州煤炭工业(集团)有限责任公司,河南郑州450007 [2]华北水利水电大学地球科学与工程学院,河南郑州450046

出　　处：《能源与环保》2024年第10期47-52,58,共7页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：河南省自然科学基金项目(202300410269)。

摘　　要：水体下采煤存在发生透水性灾害和严重地表塌陷等问题,为了分析水库下采煤对水库及地表的影响,以郑州矿区芦沟煤矿32采区为例,采用理论计算、数值模拟相结合的研究方法,确定煤层开采后上覆岩层破坏形成的导水裂缝带高度;采用概率积分法和数值模拟确定芦沟煤矿地表水库地表最大下沉值和水平变形值。结果表明,导水裂缝带最大标高距水库底部的高差均大于300 m,导水裂缝带不会影响到水库安全;地表水平变形最大值远小于规定允许变形值,在地表水库下进行煤炭开采是安全的。通过32采区工作面的安全开采,验证了分析方法与结果的合理性。There are problems such as permeability disasters and severe surface subsidence in coal mining under water bodies.In order to analyze the impact of coal mining under reservoirs on reservoirs and the surface,taking the 32 mining area of Lugou Coal Mine in Zhengzhou mining area as an example,a research method combining theoretical calculation and numerical simulation was used to determine the height of the water conduct zone formed by the damage of the overlying rock strata after coal mining.The maximum subsidence value and horizontal deformation value of Lugou Coal Mine surface reservoir were obtained by probability integral method and numerical simulation.The results show that the height difference between the maximum elevation and the bottom of the reservoir of the water conduct zone is greater than 300 m,the water conduct zone will not affect the safety of the reservoir;the maximum surface horizontal deformation is far less than the allowable deformation value,so it is safe to carry out coal mining under the surface reservoir.Through the safe mining of the working face in the 32 mining area,the rationality of the analysis method and the results are verified.

关 键 词：水库下采煤 导水裂缝带 地表沉降 数值模拟 

分 类 号：TD823.83[矿业工程—煤矿开采]