Research on the Orthogonal Test of Tunnel Supporting Parameters Based on the Finite Element Strength Reduction Method

Abstract:

In this thesis, considering the double-hole parallel tunnel engineering with super-small interval, the optimization of designed supporting parameters are studied by the strength reduction finite element method. The calculated safety factor by using the strength reduction finite element method was considered as the index of the tunnel surrounding rock stability, and by using the orthogonal finite element experimental method, the parameters are analyzed and the optimal values of bolt and spry cement are given. The excavation and supporting process under the optimal supporting parameters is simulated, and it indicates that the optimal parameters not only could ensure the stability of the tunnel surrounding rock, but also could decrease the cost of the engineering comparing with the original design project, and there is reference value for analogous engineering.

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 1533-1537
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.1533
• Online since: May 2012
• Authors: Peng Li He
• Keywords: Numerical Simulation, Orthogonal Test, Safety Factor, Strength Reduction Finite Element, Support Parameters

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