The Studying of Reinforcement Mechanism of Fully Grouting Rock Bolt in Brittle Wall Rock Mass

Abstract:

The bolt’s load transfer differential equation has established according the stress equilibrium in a small section of a bolt and load transfer mechanics. And according the rock mass deformation before and after bolt assembling, the rock bolt’s load transfer equation has gained. In this paper, from later researching achievement, the radial displacement function of brittle wall rock for tunnel is gotten. And combining the radial deformation of tunnel wall rock mass, the axial force and friction resistance of rock bolt have gotten in brittle wall rock mass. Through analyzing the stress distribution feature and stress distribution tendency and affection factors, the affection factors to anchoring results is the dilatancy angle. And through the studying, it is show that the axial force and shear stress of rock bolt are bigger with the dilatancy angle increase

• Periodical: Advanced Materials Research (Volumes 690-693)
• Pages: 786-792
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.690-693.786
• Online since: May 2013
• Authors: Xun Guo Zhu
• Keywords: Frictional Resistance, Fully Grouting Rock Bolt, Reinforcement Mechanism, Rock Mechanics

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