›› 2007, Vol. 28 ›› Issue (S1): 173-177.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study of reinforcement mechanics for fully grouting rock bolt in tunneling wall rock

ZHU Xun-guo1, 2, YANG Qing1, 2, LUAN Mao-tian1, 2   

  1. 1. Institute of Geotechnical Engineering, School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China; 2. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
  • Received:2007-03-20 Online:2007-10-25 Published:2014-03-28

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Abstract: The shear stress distribution analytical model of the grouted rock bolt in uniformly deformed tunnel wall rock mass has been developed according to the anchoring solid mass’s forcing situation and the M－C yielding criterion of the interface between anchoring solid mass and wall rock mass. And according to the interaction between anchoring solid mass and wall rock mass of tunneling, the interaction model and general solution to the shear stress of the rock bolt without decoupling at the bolt interface have been developed. For rock bolts installed in uniformly deformed rock, the loading process of the bolts due to rock deformation is taken into account in developing the model. Model simulations confirm the previous findings that a bolt in situ has a pick-up length, an anchor length and neutral point.

Key words: rock mechanics, fully grouting rock bolt, reinforcement mechanism, frictional resistance

CLC Number: 

  • TU 454
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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