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2022 Vol. 42, No. 4
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WEI Liangshuai, LIANG Bo, LIU Minsheng, WU Sen, XIAO Weiyang, LIU Yong. 2022. Analysis of seismic damage mechanism of travertine at Nuorilang waterfall, Jiuzhaigou. Sedimentary Geology and Tethyan Geology, 42(4): 675-683. doi: 10.19826/j.cnki.1009-3850.2022.08004
Citation: WEI Liangshuai, LIANG Bo, LIU Minsheng, WU Sen, XIAO Weiyang, LIU Yong. 2022. Analysis of seismic damage mechanism of travertine at Nuorilang waterfall, Jiuzhaigou. Sedimentary Geology and Tethyan Geology, 42(4): 675-683. doi: 10.19826/j.cnki.1009-3850.2022.08004
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Analysis of seismic damage mechanism of travertine at Nuorilang waterfall, Jiuzhaigou

  • 1. Institute of Exploration Technology CAGS, Chengdu 611734, China;

  • 2. Sichuan Institute of Geological Engineering Investigation Group Co. LTD, Chengdu 610072, China;

  • 3. Jiuzhaigou Valley Scenic and Historic Interest Area administration, Aba Xizang and Qiang Autonomous Prefecture 623402, China

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  • Corresponding author: LIANG Bo  
Received Date:  20 October 2021
Revised Date:  24 June 2022
    Abstract
  • The Jiuzhaigou earthquake that occurred on August 8, 2017, has caused damage to some landscapes in the scenic area, including a small-scale collapse of the travertine located in the famous Nuorilang waterfall. Based on investigation, the current situation of seismic damage to the travertine has been determined. Besides, the damage process of the travertine has been simulated and analyzed through the two-dimensional discrete element analysis method (Universal Distinct Element Code, UDEC). The process reveals that the travertine has experienced four stages: vibration creep, continuous tension, toppling fracture and buckling failure. According to the analysis of seismic damage process of the travertine and its geological environment background, the geological environment conditions for the formation of travertine and the water flow system in the scenic area are basically stable, so the travertine will be in a relatively stable development stage, and the famous waterfall landscape will not die out.
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