水库下采煤安全性评价分析
Safety Evaluation and Analysis of Coal Mining under Reservoir
裴书锋 1魏福泽 2刘晓飞3
作者信息
- 1. 华北水利水电大学地球科学与工程学院,郑州 450046;华北水利水电大学地质灾害防控研究所,郑州 450046
- 2. 华北水利水电大学地球科学与工程学院,郑州 450046
- 3. 郑州煤炭工业(集团)有限责任公司,郑州 450007
- 折叠
摘要
为了分析水库下采煤对水库及地表的影响,以某煤矿 32 采区为例,采用理论计算、数值模拟相结合的研究方法,分析了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得到了某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底部的高差均大于 250 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.
Abstract
In order to analyze the impact of coal mining under reservoir on reservoir and surface,taking 32 mining area of a coal mine as an example,the research method combining theoretical calculation and numerical simulation was used to analyze the height of water-conducting fracture zone formed by overlying rock failure after coal mining.The maximum subsidence value and horizontal deformation value of a coal mine surface reservoir are obtained by probability integral method and numerical simulation.The results show that the height difference between the maximum elevation and the bottom of the water-guiding fracture zone is greater than 250 m,the water-guiding fracture zone will not affect the safety of the reservoir,and 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Key words
coal mining under reservoir/water-conducting fracture zone/surface settlement/numerical simulation引用本文复制引用
出版年
2025
NETL
NSTL
万方数据