沟门金矿巷道支护方案的研究与优化  

Research and Optimization of Roadway Support Scheme in Goumen Gold Mine

作　　者：厉彦高 LI Yangao(Zhejiang Tuohai Construction Co.,Ltd.,Wenzhou 325000,China)

机构地区：[1]浙江拓海建设有限公司,浙江温州325000

出　　处：《矿业工程》2023年第1期5-8,共4页Mining Engineering

摘　　要：沟门金矿以矿岩工程质量指标RQD值作为巷道分类依据,应用FLAC3D数值模拟软件开展不同类别巷道的数值模拟,并对支护效果进行分析。巷道数值模拟结果表明:围岩级别Ⅱ~Ⅳ级巷道采取喷锚网支护方式,根据不同巷道断面、围岩级别明确了喷射混凝土厚度、锚杆网度等支护参数;对于Ⅴ级围岩,最佳支护方案为喷射混凝土+钢支架,其中C30喷射混凝土厚度100 mm作用是封闭裸露岩体,钢支架间距宜为1.5 m。In Goumen Gold Mine,RQD value,the quality index of ore and rock engineering is used as the basis of roadway classification,and the numerical simulation of different types of roadway is conducted and the supporting effect is analyzed with FLAC3D numerical simulation software.The numerical simulation results of roadway show that the supporting method of shotcrete-bolting-mesh is adopted for the roadway with surrounding rock of GradeⅡ~Ⅳ,and the support parameters such as shotcrete thickness and bolt mesh are determined according to different roadway sections and surrounding rock grades.For the surrounding rock of Grade V,the best supporting scheme is shotcrete+steel bracket,in which C30 shotcrete with a thickness of 100mm is used to seal the exposed rock mass,and the spacing between steel supports should be 1.5m.

关 键 词：巷道掘进 支护 喷锚网 钢支架 混凝土 FLAC3D 

分 类 号：TD353[矿业工程—矿井建设]