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在分析深部高地应力巷道围岩变形与破坏特征,目前锚杆支护存在问题的基础上,提出高预应力、强力支护理论与锚杆支护设计准则;通过井下实测数据,分析深部矿井地应力分布特征;介绍强力锚杆支护系统,包括强力锚杆,强力钢带及强力锚索;最后,介绍高预应力、强力锚杆支护系统在新汶千米深井巷道中的应用情况,评价支护效果。井下试验表明,高预应力、强力锚杆支护系统能有效控制深部巷道强烈变形,保持围岩稳定。
Abstract：Based on the analysis of deformation and damage characteristics of deep roadway surrounding rock with high earth stress and current problem in bolting supporting,a theory of power supporting with high pre-stress and a bolting supporting design rule were put forward.Earth stress distribution characteristic of deep mines was analyzed with underground on-the-spot data.A power supporting system which included power bolting,power steel strip and power bolting rope was introduced.Application of power bolting system with high pre-stress in over 1000 m deep mine of Xinwen was introduced too.Underground test showed that this system can control large deformation of deep mine to keep stability of its surrounding rock.
[1]王金华.我国煤巷锚杆支护技术的新发展[J].煤炭学报,2007,32(2):113-118.
[2]康红普,姜铁明,高富强.预应力在锚杆支护中的作用[J].煤炭学报,2007,32(7):673-678.
[3]范明建.锚杆预应力与巷道支护效果的关系研究[D].北京:煤炭科学研究总院,2007.
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[6]康红普.高强度锚杆支护技术的发展与应用[J],煤炭科学技术,2000,28(2):1-4.
[7]王怀新,周明.高强锚杆支护材料在深井的开发应用[J].矿山压力与顶板管理,2002,19(1):30-31.
[8]王金华.千米深井煤巷围岩变形特征及其控制技术研究[D].北京:中国矿业大学(北京),2007.
基本信息:
中图分类号:TD353.6
引用信息:
[1]康红普.深部煤巷锚杆支护技术的研究与实践[J].煤矿开采,2008,No.80(01):1-5.
基金信息:
国家技术支撑计划项目(20069BAB16B02,2006BAK03B06)