山西某矿2^(#)煤层锚网支护参数设计优化研究  

Research on Design Optimization of No.2 Coal Seam Bolt and Mesh Support Parameters in a Mine in Shanxi

作　　者：黄勇 孙淼 王爱文[2,3] 庄小威 卢盛亮 李钢 王刚 徐宁 司广宏 HUANG Yong;SUN Miao;WANG Aiwen;ZHUANG Xiaowei;LU Shengliang;LI Gang;WANG Gang;XU Ning;SI Guanghong(Shanxi Lu'an Chemical Group Yuwu Coal Industry Co.,Ltd.,Changzhi 046199,China;School of Mechanics and Engineering,Liaoning University of Engineering and Technology,Fuxin 123000,China;Rock Burst Research Institute,Liaoning University of Engineering and Technology,Fuxin 123000,China)

机构地区：[1]山西潞安化工集团余吾煤业有限责任公司,山西长治046199 [2]辽宁工程技术大学力学与工程学院,辽宁阜新123000 [3]辽宁工程技术大学冲击地压研究院,辽宁阜新123000

出　　处：《煤炭技术》2023年第5期34-39,共6页Coal Technology

基　　金：国家自然科学基金面上资助项目(51974150);新疆维吾尔自治区天池百人计划(柔性人才)支撑资助项目。

摘　　要：为研究山西某矿回采巷道锚网支护参数最优方案,以该矿井田地质条件为工程背景,采用理论计算和数值模拟方法,并基于锚杆、锚索支护理论计算结果,初步提出3种支护参数,通过数值模拟结果从模拟方案中比选出最优支护方案。研究表明,2^(#)煤层巷道选用长度为2.1 m,直径φ20 mm的MG335型左旋螺纹钢锚杆且锚杆间排距定为0.9 m。锚索选用长度为7.3 m的7股钢绞线。同时2^(#)煤层巷道掘进后煤帮最大破坏深度为1.15 m,回风和进风巷顶板最大破坏深度分别为1.52 m和1.71 m,选取的锚杆、锚索理论上满足设计要求。通过支护方案优化,可以有效控制围岩稳定性和巷道安全。In order to study the optimal plan for the support parameters of the backing roadway of a mine in Shanxi,taking the geological conditions of the mine field as the engineering background,using theoretical calculation and numerical simulation methods,and based on the theoretical calculation results of bolt and anchor cable support,three various support parameters are preliminarily proposed,and the optimal support scheme is selected from the simulation schemes through the numerical simulation results.The research shows that the No.2 coal seam roadway adopts the MG335 type left-handed threaded steel bolts with a length of 2.1 m and a diameter of 20 mm,and the row spacing between the bolts is set to be 0.9 m.The anchor cable is made of seven-strand steel strand with a length of 7.3 m.At the same time,after the No.2 coal seam roadway is excavated,the maximum damage depth of the coal gang is 1.15 m,and the maximum damage depth of the roof of the return air and air inlet roadway is 1.52 m and 1.71 m respectively.The bolts and cables selected theoretically meet the design requirements.By optimizing the support scheme,the surrounding rock stability and roadway safety can be effectively controlled.

关 键 词：锚网支护 数值模拟 支护方案优化 围岩稳定 

分 类 号：TD323[矿业工程—矿井建设] TD353