摘要
以新庄孜煤矿62310回风巷为工程背景,介绍了原巷充填材料的选取和充填工艺流程,采用理论分析的方法分析了无煤柱掘巷的围岩控制方法,采用高强度锚杆、锚索、中空注浆锚索和钢筋网联合支护,选择合理的充填墙体强度和宽度,有效的控制了无煤柱掘巷的围岩变形和顶板离层。采用现场实测的方法,在1400m的掘巷中布点进行实测,实测数据为:巷道顶板变形量在30~50mm之间,顶板离层量小于20mm,巷帮变形量在40~50mm之间,观测数据表明巷道支护效果良好,巷道围岩变形得到有效控制。
Based on the engineering background of 62310 air return way in Xinzhuangzi Coal Mine,the materials selection and filling process of original roadway filling are introduced.Theoretical analysis method is applied to analyze the surrounding rock control of non-pillar driving,and the combined support scheme is applied using high-strength anchor and anchor cable,hollow grouting anchor cable and steel mesh,reasonable filling wall strength and width are selected,and the surrounding rock deformation and roof separation are effectively controlled in non-pillar roadway driving.The field measurement method is used for the 1400 m driving roadway,and the roadway roof deformation is between 30 mm and 50 mm,the roof separation is less than 20 mm,and the roadway side wall deformation is 40 mm to 50 mm.According to the observations,the roadway support effect is favorable,and the surrounding rock deformation is effectively controlled.
作者
胡乐天
王民廷
HU Le-tian;WANG Min-ting(China Coal Technology and Engineering Group Chongqing Research Institute,Chongqing 400037,China;Selian No.2 Mine of Zhongbei Coal Chemical Co.,Ltd.,Ordos 017000,China)
出处
《煤炭工程》
北大核心
2020年第2期42-45,共4页
Coal Engineering
关键词
原巷充填
充填体
无煤柱掘巷
围岩控制
original roadway filling
filling body
non-pillar roadway driving
surrounding rock control
