摘要
针对金属锚杆和锚网的价格高、质量大、耐腐蚀性差等问题,以金川集团龙首矿为研究对象,基于理论分析、数值模拟及现场试验等手段,开展了非金属喷锚网巷道支护工艺优化研究。通过锚杆、锚网强度指标计算并综合考虑支护效果评价指标,初步确定非金属锚杆、锚网规格参数;采用MIDAS/GTS数值模拟软件构建金属、非金属(喷)锚网支护巷道的二维数值模型,分析围岩应力(位移)场、锚杆内力等分布规律;对永久支护巷道及临时回采进路进行现场支护试验,对比分析金属材料与非金属材料的支护效果,验证了非金属喷锚网支护工艺在地下开采支护工程中应用的可行性。研究结果可为非金属材料在巷道支护中的应用提供参考。
Metal bolt and anchor net have the problems of high price,large weight and poor corrosion resistance.Taking Longshou Mine of Jinchuan Group as the background,based on theoretical analysis,numerical simulation and field test,the optimization research of roadway support technology with non-metal shotcrete anchor mesh was carried out.By calculating the strength index of bolt and anchor mesh and considering the evaluation index of support effect,the specification parameters of non-metallic bolt and anchor mesh were preliminarily determined.MIDAS/GTS numerical calculation software was used to construct a two-dimensional numerical model of metal and non-metal(shotcrete)bolt-mesh supporting roadway,and the distribution law of surrounding rock stress(displacement)field and bolt internal force was analyzed.The field support test was carried out on the permanent support roadway and the temporary mining approach,and the support effects of metal materials and non-metal materials were compared and analyzed.The feasibility of support technology with non-metal shotcrete anchor mesh in underground mining support engineering was verified.The research results can provide a reference for the application of non-metal materials in roadway support.
作者
骆玉琦
龙卫国
应金荣
LUO Yuqi;LONG Weiguo;YING Jinrong(Longshou Mine of Jinchuan Group Co.,Ltd.,Jinchang,Gansu 737100,China;Key Laboratory of Ministry of Educationfor Efficient Mining and Safety of Metal Mines,University of Science and Technology Beijing,Beijing 100083,China)
出处
《矿业研究与开发》
CAS
北大核心
2023年第9期119-126,共8页
Mining Research and Development
基金
国家重点研发计划项目(2018YFC1900603,2018YFC0604604)。
关键词
非金属材料
喷锚网
巷道支护
工艺优化
数值模拟
Non-metal materials
Shotcrete anchor mesh
Roadway support
Technology optimization
Numerical simulation
