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九顶山铜钼矿软岩巷道锚喷网支护研究

ISSN号：1009-3842
期刊名称：铜业工程
时间：2013.4.4
页码：33-36
分类：TD853[矿业工程—金属矿开采;矿业工程—矿山开采]
作者机构：[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
相关基金：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（2012BAB08802）
相关项目：堆浸体系中孔隙演化对渗流特性的影响机制

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, bolt- shotcrete -net combined supporting, supporting form , construction technology, convergence -deformation of the roadway

中文摘要：

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。

英文摘要：

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.