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《Journal of China Coal Society》 2008-07
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Design for pretensioned rock bolting parameters

KANG Hong-pu1,JIANG Tie-ming2,GAO Fu-qiang1(1.Coal Mining and Designing Branch,China Coal Research Institute,Beijing 100013,China;2.Jincheng Anthracite Coal Mining Grop.Ltd.,Jincheng 048006,China)  
A series of parametric studies were carried out using the finite difference code FLAC3D to investigate the influence of various rock bolting parameters on the stress distribution characteristics,these parameters included pretensioned stress magnitude,bolt length,density,installed angle and anchorage pattern.The in situ stresses were not considered in present numerical models.Subsequently,a comprehensive systematic analysis of rock bolting parameters,including pretensioned stress,bolt diameter,strength,length,density,installed angle,anchorage pattern,other surface control devices and cable bolting parameters was proposed on the base of the combination of the numerical modeling results and the application conditions of rock bolts in underground coal mine sites.Accordingly,the principle and scope of the selection of pretensioned rock bolting parameters were put forward.
【Fund】: 国家科技支撑计划基金资助项目(2006BAB16B02 2006BAK03B06)
【CateGory Index】: TD353.6
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1 WANG Jin-hua~(1,2)(1.China University of Mining and Technology(Beijing),Beijing 100083,China;2.China Coal Research Institute,Beijing 100013,China);New development of rock bolting technology for coal roadway in China[J];Journal of China Coal Society;2007-02
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【Co-citations】
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