高瓦斯破碎煤体复杂应力条件下小煤柱留设技术  

Small Coal Pillar Retaining Technology under Complex Stress Conditions of High Gas and Broken Coal

作　　者：李鹏[1] LI Peng

机构地区：[1]山西晋煤集团赵庄煤业有限责任公司

出　　处：《山西焦煤科技》2019年第5期19-22,共4页Shanxi Coking Coal Science & Technology

摘　　要：赵庄煤业1305工作面为高瓦斯区域,采用一次采全高回采,采厚大、煤质破碎松软、瓦斯涌出和地质构造复杂,分析了掘进期间与回采期间巷道应力分布规律及变形情况,采用数值模拟的方法,对沿空掘巷合理小煤柱的宽度提供技术保障,研究沿空掘巷留设煤柱的控制机理与技术,确定合理支护参数,增大煤炭资源回收率,保证工作面安全、高效回采。The working surface of Zhaozhuang coal industry 1305 is a high gassy area. It adopts full mining and high recovery, large thickness, soft coal with gas emission and complex geological structure. The stress distribution and deformation of roadway during excavation and mining are analyzed. In the case of numerical simulation, technical support is provided for the width of reasonable small coal pillars along gob side entry driving, and the control mechanism and technology of retaining coal pillars are studied, and reasonable support parameters are determined to increase the recovery rate of coal resources in a safe and efficient way.

关 键 词：高瓦斯破碎煤体 大采高 小煤柱留设 矿压 

分 类 号：TD822.3[矿业工程—煤矿开采]