Mechanics Analysis of Grade V Surrounding Rock Primary Support in Maanziliang Tunnel

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Abstract:

Commonly used finite element strength reduction to calculate the safety factor of slope,to analyze the stability of the slope[1~3]. Recently it also proposed the methods to evaluate the safety factor for the stability of surrounding rock of underground chambers and supporting structural mechanics[4~6]. For Qinling Mountains of the complex geological conditions in the Maanziliang highway tunnel, this article use the finite element method from the bolt resist tension, bolt length, the force of sprayed layer of concrete to computing gradeⅤsurrounding rock section of primary support safety factor, to give evaluation to support mechanics of the Maanziliang tunnel.

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414-417

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April 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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