Geomechanics and Engineering

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

  • Li, Xiaojing (Department of Civil Engineering, Shandong Jianzhu University) ;
  • Chen, Han-Mei (NewRail Centre for Railway Research, Newcastle University) ;
  • Sun, Yanbo (Shandong Luqiao Group CO. LTD) ;
  • Zhou, Rongxin (Institute for Infrastructure and Environment, School of Engineering, The University of Edinburgh) ;
  • Wang, Lige (Institute for Infrastructure and Environment, School of Engineering, The University of Edinburgh)
  • Received : 2016.11.24
  • Accepted : 2017.10.10
  • Published : 2018.04.10
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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.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation of China, Shandong Province and the Ministry of Science and Technology, China Scholarship Council

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