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《Coal Mining Technology》 2008-01
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Research and Practice of Bolting Support Technology in Deep Coal Roadways

KANG Hong-pu (Coal Mining & Designing Branch,China Coal Research Institute,Beijing 100013,China)  
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.
【Fund】: 国家技术支撑计划项目(20069BAB16B02 2006BAK03B06)
【CateGory Index】: TD353.6
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