Stability Analysis of Tunnel Surrounding Rock Mass at Lanjiagou Molybdenum Mine

Abstract

Abstract: Focused on the deformation and failure of surrounding rock caused by excavating tunnel in the metal mine,and taking the tunnel of Lanjiagou molybdenum mine as a case,MIDAS 3D model is established to simulate the typical sections of deep tunnel in Lanjiagou molybdenum mine,and analyze the variation of stress and strain of surrounding rock in initial support as well as the variation of internal force of supporting structure.The validity of supporting structure can be proved by site test,and the failure mechanism and supporting structures of surrounding rocks were deeply investigated.

Key words: Tunnel surrounding rock, Failure mechanism, Stability, Numerical analysis

YANG Yu, SUN Yi-Dan, ZHANG Pei-Lan. Stability Analysis of Tunnel Surrounding Rock Mass at Lanjiagou Molybdenum Mine[J]. Metal Mine, 2016, 45(08): 69-74.

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Stability Analysis of Tunnel Surrounding Rock Mass at Lanjiagou Molybdenum Mine

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