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Volume 35 Issue zk1
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CHEN Yong-ming, TENG Guang-liang, SHI Yu-cheng, QIANG Zheng-yang. Discrete element simulation of instability mechanism for 109 tunnel slopes of Baoji-Chengdu Railway[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk1): 23-32.
Citation: CHEN Yong-ming, TENG Guang-liang, SHI Yu-cheng, QIANG Zheng-yang. Discrete element simulation of instability mechanism for 109 tunnel slopes of Baoji-Chengdu Railway[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk1): 23-32.
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Discrete element simulation of instability mechanism for 109 tunnel slopes of Baoji-Chengdu Railway

  • 1. Earthquake Administration of Gansu Province (Key Laboratory of Loess Earthquake Engineering, CEA), Lanzhou 730000, China; 2. Lanzhou Institute of Seismology, CEA, Lanzhou 730000, China; 3. Geotechnical Disaster Prevention Engineering Technology Research Center of Gansu Province, Lanzhou 730000, China; 4. Architecture Design Institute of Gansu, Lanzhou 730030, China

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  • Received Date: March 03, 2013
  • Published Date: July 18, 2013
    Graphical Abstract
    • Abstract
  • Based on 109 tunnel landslides of Baoji-Chengdu Railway, the earthquake jointed rock slope instability mechanism is studied by using discrete element numerical simulation to simulate the dynamic response and the development process of plastic zone under earthquake action. The safety factor of the slope is calculated under earthquake action by using the strength reduction method. The results show that tensile failure occurs in the slope surface, and it extends from the lower part to the upper part along the slope in the beginning. Under the earthquake, the zone of tensile failure is gradually developed to the internal part of the slope, and the lower part of the tensile failure gradually expands and extends from the lower part to the upper part. There is a strong crack on the slope surface, and the rock slope will slump while the zone of tensile failure is formed.
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