Numerical Analysis of Deeply Buried Small Net Distance Tunnels on Rock Stability under Different Construction and Methods

Abstract:

Based on the background of a highway, for tunnels with small spacing of complex stress condition, adopt various construction schemes for numerical simulation using Midas Gts finite element software under the condition of deep-buried small net distance tunnel. Use full-face excavation method, benching tunneling construction method and both side heading method to compare surrounding rock stress, surrounding rock deformation, internal force of bolt and shotcrete support system structure, lateral-wall displacement and stability of surrounding rock. Analyse displacement and stress change laws before and after the excavation of tunnel surrounding rock and supporting structure under different schemes.

• Periodical: Advanced Materials Research (Volumes 838-841)
• Pages: 1346-1351
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.838-841.1346
• Online since: November 2013
• Authors: Yong Ding Tian*, Cong Cai, Jia Peng, Jin Hua Wu, Jia Qi Zhang
• Keywords: Benching Tunneling Construction Method, Both Side Heading Method, Deep-Buried Small Net Distance Tunnel, Full-Face Excavation Method, Numerical Analysis

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