The Surrounding Rock of Deep Borehole Pressure Relief and Let the Pressure Bolt Coupling Analysis

Abstract:

Roadway borehole pressure relief and let the pressure anchor combined support technology were based on using the new pressure high strength bolt instead of ordinary bolt ,Combined with the borehole pressure relief principle, aim at releasing high stress of surrounding rock of roadway ,Complying with the deformation characteristics of supporting technology of the surrounding rock. In this paper, we used scaled numerical simulation technology —— ADINA to analyze the roadway borehole pressure relief and let the pressure anchor coupling support technology. To the tunnel, we used the method of numerical simulation of let the pressure bolt support independently, drilling pressure relief, and borehole pressure relief and let the pressure anchor coupling support three kinds of the comparison numerical simulation. The advantages of coupling supporting effect was elaborated, It was instructive for the deeply roadway engineering in the future.

• Periodical: Applied Mechanics and Materials (Volumes 446-447)
• Pages: 1421-1424
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.446-447.1421
• Online since: November 2013
• Authors: Shu Guang Zhang, Long Chen, Hong Yu Jia
• Keywords: Borehole Pressure Relief, Coupling Support, Numerical Simulation, Pressure Bolt

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