九顶山铜钼矿软岩巷道锚喷网支护研究  

Research on Bolt-shotcrete-net Supporting in the Soft Rock Roadway of Jiu Dingshan Copper-molybdenum Mine

作　　者：于少峰[1] 陈绍洪 韩斌[1] 

机构地区：[1]北京科技大学金属矿山高效开采与安全教育部重点实验室,北京100083 [2]云铜集团弥度县九顶山矿业有限公司,云南弥渡675600

出　　处：《铜业工程》2013年第2期33-36,共4页Copper Engineering

基　　金：国家自然科学基金重点项目(50934002);教育部长江学者和创新团队发展计划项目(IRT0950);国家自然科学基金项目(51074013);国家"十二五"科技支撑计划项目(2012BAB08B02)

摘　　要：针对九顶山铜钼矿矿体松散破碎、自稳能力差及需大量支护等特点,优选锚喷网支护方式对岩体进行加固;确定了树脂锚杆、基于32.5级普通硅酸盐水泥所制混凝土与Q235钢筋网联合支护巷道;设计了锚喷网支护形式并规定了施工工艺技术,并在五中段二盘二穿2P213测点附近进行了工业试验;为检测支护效果,进行了巷道收敛变形监测,前60天,巷道变形由约7mm加速降低至约3mm;60天后巷道变形趋缓,并在100天后逐渐降低至0.1mm并保持基本不变;水平收敛值大于顶板;结果表明:锚喷网支护能够有效控制巷道移动变形,提高岩体整体性及稳定性,增强井下工人安全性。Copper - molybdenum ore body of Jiu Dingshan is loose and broken whose self - stable ability is bad consequently. Bolt - shotcrete - net combined supporting was selected to strengthen the rock; Materials and parameters of resin bolt, shotcrete made based on the 32.5 - magnitude ordinary portland cement and Q235 type of net were determined, while the supporting form and con- struction technology of bolt - shotcrete - net combined supporting were designed. Industrial test around station 2P213 of panel 2 - punc- ture 2 in middle - piece 5 was launched; In order to detect the effects of supporting, the convergence - deformation of the roadway was monitored： in the first 60 days, deformation of the roadway was decreased from 7 mm to 3 mm, and after 60 days, the roadway de- formed slowly. After 100 days, deformation of the roadway came to 0.1 mm. Results showed that ： bolt - shotcrete - net combined sup- porting could control the mobility and deformation of roadway, improve integrity and stability of the rock, and enhance the safety of the workers under the mine efficiently.

关 键 词：自稳能力差 锚喷网支护 支护形式 施工工艺 巷道收敛变形 有效控制 

分 类 号：TD853[矿业工程—金属矿开采]