Study on the splitting failure of the surrounding rock of underground caverns

Xiaojing Li, Han-Mei Chen, Yanbo Sun, Rongxin Zhou and Lige Wang

Abstract

In this paper splitting failure on rock pillars among the underground caverns has been studied. The damaged structure is considered to be thin plates and then the failure mechanism of rock pillars has been studied consequently. The critical load of buckling failure of the rock plate has also been obtained. Furthermore, with a combination of the basic energy dissipation principle, generalized formulas in estimating the number of splitting cracks and in predicting the maximum deflection of thin plate have been proposed. The splitting criterion and the mechanical model proposed in this paper are finally verified with numerical calculations in FLAC 3D.

Key Words

lifecycle performance; stochastic deterioration modelling; structural reliability; reinforcement corrosion; residual strength

Address

Xiaojing Li: 1.) Department of Civil Engineering, Shandong Jianzhu University, Jinan, 250101, China 2.) State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, 266510, China Han-Mei Chen: NewRail Centre for Railway Research, Newcastle University, NE1 7RU, U.K. Yanbo Sun: Shandong Luqiao Group CO. LTD, 250101, China Rongxin Zhou and Lige Wang: Institute for Infrastructure and Environment, School of Engineering, The University of Edinburgh, EH9 3JL, U.K.

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