城镇下特厚煤层大采宽条带开采方法研究  

Study on Large Mining Width Strip Mining Method for Extra Thick Coal Seam in Cedi Town

作　　者：雷武林 李星亮[3] 王建 何姜毅 郑超 余岚 张巨峰 张光生 LEI Wulin;LI Xingliang;WANG Jian;HE Jiangyi;ZHENG Chao;YU Lan;ZHANG Jufeng;ZHANG Guangsheng(Energy Engineering Institute of Longdong University,Qingyang 745000,China;School of Energy Resource,Xi’an University of Science and Technology,Xi’an 710054,China;Shaanxi Railway Institute,Weinan 714000,China;Chongqing Fire Safety Technology Research Service Limited Liability Company,Chongqing 401121,China)

机构地区：[1]陇东学院能源工程学院,甘肃庆阳745000 [2]西安科技大学能源学院,陕西西安710054 [3]陕西铁路工程职业技术学院,陕西渭南714000 [4]重庆消防安全技术研究服务有限责任公司,重庆401121

出　　处：《煤矿安全》2020年第2期219-224,共6页Safety in Coal Mines

基　　金：甘肃省安全生产科技资助项目(GAJ00017);渭南市科研发展计划资助项目(2019ZAYF-JCYJ-139);陕西铁路工程职业技术学院研究生资助项目(KY2015-35).

摘　　要：为了实现策底镇建筑物下煤炭资源的合理安全开采。以策底煤矿建筑物下开采为研究背景,通过现场实地勘察、条带开采参数理论计算等方法,明确了建筑物下采煤地表建筑物的分布、数量、结构和类型,确定了留宽70 m、采宽50 m的大采宽条带开采设计方案。通过概率积分法和FLAC3D数值模拟计算分别对该条带开采设计进行了验证,结果表明大采宽条带开采后形成的地表最大下沉量值为210 mm,地表水平变形量值为-1.0~1.5 mm/m,地表建筑物受损小于Ⅰ级破坏,满足保护地表建筑物的要求,并能实现矿井02、04工作面连续推进安全采煤。To realize reasonable and safe mining of coal resources under Cedi Town,taking the under-construction mining of Cedi Coal Mine as the research background,the distribution,quantity,structure and type of surface buildings of under-construction mining are defined by field investigation and theoretical calculation of strip mining parameters,and the design scheme of large-width strip mining with leaving 70 m and mining with of 50 m is determined.Through probability integral method and FLAC3D numerical simulation calculation,the mining design of the strip is verified.The results show that the maximum surface subsidence value is 210 mm,the surface horizontal deformation value is-1.0 mm/m to 1.5 mm/m,and the damage of the surface buildings is less than the first level damage,which meets the requirements of protecting the surface buildings,and can realize continuous advancing for working faces 02,04 to promote safe mining.

关 键 词：建筑物下采煤 大采宽 条带开采 数值模拟 概率积分法 

分 类 号：TD823.83[矿业工程—煤矿开采]