金川二矿大体积充填体下玻璃钢锚杆合理支护参数研究  

Research on Reasonable Supporting Parameters of GFRP Bolt Under the Massive Backfill in Jinchuan No.2 Mining Area

作　　者：王岗风 邹龙[2] 赵崇武[2] 寇永渊[2] 王文杰[1] WANG Gangfeng;ZOU Long;ZHAO Chong-wu;KOU Yongyuan;WANG Wenjie(College of Resource and Environmental Engineering,Wuhan University of Science and Technology,Wuhan,Hubei 430081,China;No.2 Mining Area,Jinchuan Group Co.,Ltd.,Jinchang,Gansu 737100,China)

机构地区：[1]武汉科技大学资源与环境工程学院,湖北武汉430081 [2]金川集团股份有限公司二矿区,甘肃金昌市737100

出　　处：《矿业研究与开发》2022年第1期100-105,共6页Mining Research and Development

基　　金：国家自然科学基金资助项目(51974206);湖北省安全生产专项资金科技项目(KJZX202007007)。

摘　　要：针对金川二矿区大体积充填体下玻璃钢锚杆合理支护参数问题,基于正交试验设计方法,选取锚杆的长度、锚杆直径、锚杆间距、锚杆排距和喷射混凝土厚度5个主要参数,对不同参数组合方案下的支护效果进行数值计算,以巷道变形、塑性区体积和经济成本作为评价指标,采用极差分析法和矩阵分析法分析了各参数对支护效果的影响。结果表明:锚杆长度为2.2 m,锚杆直径为20 mm,锚杆间距为1.2 m,锚杆排距为0.8 m,喷射混凝土厚度为100 mm时,支护效果最好;各参数对支护效果影响的主次顺序为喷射混凝土厚度、锚杆排距、锚杆间距、锚杆直径、锚杆长度。研究结论为金川二矿区大体积充填体下玻璃钢锚杆支护参数的合理选取提供理论依据。Aiming at the reasonable supporting parameters of GFRP bolt under the massive backfill in Jinchuan No.2 mining area, five main parameters, including bolt length, bolt diameter, bolt spacing, bolt row spacing and shotcrete thickness, were selected based on the orthogonal experimental design method. The supporting effects under different parameter combinations were simulated. Taking the roadway deformation, plastic zone volume and economic cost as evaluation indexes, range analysis method and matrix analysis method were used to analyze the influence of each parameter on the supporting effect. The results show that the supporting effect is the best when the bolt length is 2.2 m, the bolt diameter is 20 mm, the bolt spacing is 1.2 m, the bolt row spacing is 0.8 m, and the shotcrete thickness is 100 mm. The influence order of each parameter on the supporting effect is the shotcrete thickness, bolt row spacing, bolt spacing, bolt diameter and bolt length. The research provides a theoretical basis for the reasonable selection of the supporting parameters of GFRP bolt under the massive backfill in Jinchuan No.2 mining area.

关 键 词：大体积充填体 玻璃钢锚杆 正交试验 数值模拟 矩阵分析 

分 类 号：TD353[矿业工程—矿井建设]