基于煤厚变化的分区域合理煤柱尺寸及控制技术研究  

Reasonable coal pillar size and control technology in different regions based on coal seam thickness variation

作　　者：刘建军 张焦 田野 靖晓颖 LIU Jian-jun;ZHANG-Jiao;TIAN-Ye;JING Xiao-ying(Hongshuliang Mine of Kailuan Energy and Chemical Co.,Ltd.,Jungar Banner 017100,China;School of Energy,China University of Mining and Technology-Beijing,Beijing 100083,China)

机构地区：[1]开滦能源化工股份有限公司红树梁矿,内蒙古准格尔旗017100 [2]中国矿业大学(北京)能源学院,北京100000

出　　处：《煤炭工程》2022年第11期41-47,共7页Coal Engineering

摘　　要：针对综放工作面煤层厚度变化较大,留设过大的区段煤柱会造成煤炭资源浪费的问题,以红树梁煤矿6107工作面为工程背景。基于煤层的厚度变化,将6107工作面分为3个区域,结合运用理论分析、数值模拟与现场试验等方法,分别得到6107工作面西侧区域、中部合并煤层区域和靠北翼大巷区域的最优区段煤柱的宽度分别为14m、19m和11m;辅运巷道需直线布置,综合研究3个区域的区段煤柱宽度,最终确定6107工作面的整体区段煤柱宽设计为17m;提出分区域支护技术控制巷道围岩的稳定性;研究成果成功应用于工程实践,为类似条件下巷道布置提供了有益借鉴。In view of the large variation of coal seam thickness in fully mechanized top-coal caving face and the waste of coal resources caused by over-size district coal pillar,the 6107 working face of Hongshuliang Coal Mine is taken as the engineering background.Based on the thickness change of coal seam,the 6107 working face is divided into three regions.Combining the results of theoretical analysis,numerical simulation and field test,the widths of the optimal district coal pillars in the western region,the central region and the northern region of the 6107 working face are 14 m,19 m and 11 m,respectively.The auxiliary roadway should be arranged straightly,and the width of district coal pillar in three regions is comprehensively studied.Finally,the overall section coal pillar width of 6107 working face is determined to be 17 m.And it is proposed to use sub-regional support to control the stability of roadway surrounding rock.The research results have been successfully applied to engineering practice,providing a useful reference for roadway layout under similar conditions.

关 键 词：区段煤柱 合理宽度 煤厚变化 围岩控制 数值模拟 

分 类 号：TD353[矿业工程—矿井建设] TD822.3