华泰煤矿采空区围岩变形及地表建筑物安全控制措施研究  

Study on surface subsidence law of coal seam mining in Huatai Coal Mine

作　　者：宋海龙 郇小婉 白云 王光凯 张凤娟 刘波 雷耀东 SONG Hailong;HUAN Xiaowan;BAI Yun;WANG Guangkai;ZHANG Fengjuan;LIU Bo;LEI Yaodong(Shandong Zhengyuan Environmental Technology Co.,Ltd.,Jinan 250000,Shandong,China;Jinan Urban Development Group Ru-ral Revitalization Co.,Ltd.,Jinan 250000,Shandong,China;Shandong Zhengyuan Geological Resources Exploration Co.,Ltd.,Jinan 250000,Shandong,China)

机构地区：[1]山东正元环境科技有限公司,山东济南250000 [2]济南城市发展集团乡村振兴有限公司,山东济南250000 [3]山东正元地质资源勘查有限责任公司,山东济南250000

出　　处：《矿产勘查》2025年第2期380-388,共9页Mineral Exploration

基　　金：国家自然科学基金项目“深部节理岩体玻璃纤维喷射混凝土损伤机理与设计计算模型研究”(52278359)资助。

摘　　要：煤矿采空区改变了地层的原始应力状态,围岩在长期重力及地表建筑压力作用下会发生沉降变形,严重影响了矿区及周边居民的生命财产安全。以往研究主要针对于矿区本身及覆岩变化,结合地表建筑物的分析较少,本文以华泰煤矿可采煤层为研究对象,利用FLAC3D软件对煤层开采后采空区引起的地表沉降及围岩变形展开深入研究,揭示了煤层开采引起的地表沉降规律,通过数值模拟结果分析得到以下结论:(1)华泰煤矿可采煤层开挖引起的地表最大沉降值为1848.20 mm,采空区导致地表出现一定规模沉降盆地;(2)矿区边界附近因采空区产生的沉降量约550 mm;(3)煤层越深,采空区引起的地表沉降量越小,产生的地表沉降范围越大。通过分析研究地表变形特征,针对性地提出了地表建筑物布置方案、地基基础处理、圈梁加固等安全控制措施,提高了建、构筑物的安全性,为采空区地表的开发利用提供指导与依据。The coal mine goaf changed the original stress state of the strata,and the surrounding rock undergoes settlement deformation under long-term gravity and surface building pressure.This seriously affect the life and property safety of the mining area and surrounding residents.Previous studies mainly focused on changes in the min-ing area and overlying strata,with limited analysis of surface buildings.In this study,the minable coal seams of the Huatai Coal Mine are examined.Furthermore,FLAC3D software is used to conduct in-depth research on the surface settlement and surrounding rock deformation due to goaf after coal mining.The law of surface settlement caused by coal mining is revealed,and the following conclusions are obtained by analysing the numerical simulation results:(1)The maximum surface settlement due to the excavation of minable coal seams in Huatai Coal Mine is 1848.20 mm,and the goaf leads to a certain scale of subsidence basin on the surface;(2)The settlement caused by goaf near the boundary of the mining area is approximately 550 mm;(3)The deeper the coal seam,the smaller the surface sub-sidence caused by goaf,and larger the range of surface subsidence generated.By analysing and studying the charac-teristics of surface deformation.targeted security control measures have been proposed,such as surface building lay-out,foundation treatment,and ring beam reinforcement,have been proposed.Improved the safety of buildings and structures,providing guidance and basis for the development and utilization of goaf surfaces.

关 键 词：应力平衡 采空区 地表沉降 沉降盆地 

分 类 号：P314[天文地球—固体地球物理学]