某铅锌矿脉外巷道支护参数设计优化研究  

Optimization Study on the Design of Support Parameters for the Roadway Outside the Vein of a Lead Zinc Mine

作　　者：覃美满 寇向宇 廖宁 董培林 魏星 张柏 QIN Meiman;KOU Xiangyu;LIAO Ning;DONG Peilin;WEI Xing;ZHANG Bai(Changsha Institute of Mining Research Co.,Ltd.,Changsha,Hunan 410o12,China;State Key Laboratory of Safety Technology for Metal Mines,Changsha,Hunan 410012,China;Hunan Intelligent Mining Engineering Technology Research Center,Changsha,Hunan 410012,China)

机构地区：[1]长沙矿山研究院有限责任公司,湖南长沙410012 [2]金属矿山安全技术国家重点实验室,湖南长沙410012 [3]湖南省智能矿山工程技术研究中心,浴湖南长沙410012

出　　处：《矿业研究与开发》2025年第2期42-48,共7页Mining Research and Development

基　　金：五矿集团科技专项项目(2022ZXB01)。

摘　　要：针对某铅锌矿脉外巷道支护出现局部支护参数过大、支护耗材量过多导致较长的支护周期和较高的年支护成本等问题,以该矿2416分段12~15线区脉外巷道支护为工程背景,基于岩体质量评价和试验测定岩体相关力学参数等理论分析,运用数值模拟和现场试验相结合的方法对比支护效果和成本,得出最优支护方案。结果表明:采用“锚杆+钢塑格栅网+双筋条+喷砼”的联合支护方式能够满足该矿脉外巷道使用期限内的稳定性,其中锚杆选用长度为2.4 m、直径为18 mm的树脂锚杆,采用MSCKa树脂锚固剂,锚杆间排距为1.1 m,钢塑格栅网规格为4.5 m×2.5 m、孔网为6 cm、抗拉载荷为60 kN,双筋条直径为6 mm,喷射砼强度为20 MPa,平均节约支护成本599.46元/m。研究结果可为类似矿山的井下巷道支护设计提供借鉴与参考。In response to the problem of excessive local support parameters and excessive support material consumption leading to longer support cycles and higher annual support costs in the support of roadway outside the vein in a certain lead-zinc mine,the support of roadway outside the vein in the 12-15 line of 2416 section of this mine was taken as the engineering background.After conducting rock mass quality evaluation and measuring relevant mechanical parameters by test of the rock mass,the optimal support scheme was selected by comparing the support effect and cost through numerical simulation and on-site testing.The results show that the combined support method of anchor rod+steel plastic mesh+double reinforcement bar+shotcrete can meet the stability of the roadway outside the vein during its service life.Following parameters were selected,including the length of anchor rod with a length of 2.4 m and a diameter of 18 mm,as well as the MSCKa resin anchoring agent,with a spacing of 1.1 m,a steel plastic grid mesh specification of 4.5 m×2.5 m,a hole mesh of 6 cm,a tensile load of 60 kN,a double reinforcement bar diameter of 6 mm,and a sprayed concrete strength of 20 MPa.The support cost can be reduced by 599.46 RMB/m.The research results can provide a reference and guidance for the design of underground roadway support in similar mines.

关 键 词：铅锌矿 巷道稳定 支护方案 数值模拟 参数优化 

分 类 号：TD353[矿业工程—矿井建设]