ISSN 1003-8035 CN 11-2852/P
    张彦博,孙俊,陈涛,等. 贵州“7•23”水城滑坡触发机制及二次滑坡动力致灾分析[J]. 中国地质灾害与防治学报,2024,35(0): 1-9. DOI: 10.16031/j.cnki.issn.1003-8035.202312016
    引用本文: 张彦博,孙俊,陈涛,等. 贵州“7•23”水城滑坡触发机制及二次滑坡动力致灾分析[J]. 中国地质灾害与防治学报,2024,35(0): 1-9. DOI: 10.16031/j.cnki.issn.1003-8035.202312016
    ZHANG Yanbo,SUN Jun,CHEN Tao,et al. Triggering mechanism and secondary landslide analyses of the “7•23” Shuicheng Landslide in Guizhou[J]. The Chinese Journal of Geological Hazard and Control,2024,35(0): 1-9. DOI: 10.16031/j.cnki.issn.1003-8035.202312016
    Citation: ZHANG Yanbo,SUN Jun,CHEN Tao,et al. Triggering mechanism and secondary landslide analyses of the “7•23” Shuicheng Landslide in Guizhou[J]. The Chinese Journal of Geological Hazard and Control,2024,35(0): 1-9. DOI: 10.16031/j.cnki.issn.1003-8035.202312016

    贵州“7•23”水城滑坡触发机制及二次滑坡动力致灾分析

    Triggering mechanism and secondary landslide analyses of the “7•23” Shuicheng Landslide in Guizhou

    • 摘要: 2019年7月23日,贵州省六盘水市水城区鸡场镇发生特大山体滑坡,造成了43人遇难,9人失踪。滑坡发生后,残留滑体堆积物与附近不稳定斜坡仍然威胁坡脚村民居住地。本文基于滑坡现场精细调查,探明了水城滑坡地质环境条件,阐述了滑坡的孕灾环境、诱发因素与破坏模式;首次对滑后残留滑体堆积物与附近不稳定斜坡进行了不同降雨条件下的稳定性分析,并基于流态滑体运动控制方程及数值求解,对二次失稳破坏后的滑体动力学过程及潜在致灾范围进行了预测。本文研究结果可对水城滑坡二次破坏的滑体动力致灾机理与坡脚村民生命财产的保障工作起到支撑作用。

       

      Abstract: On July 23, 2019, a catastrophic landslide occurred in Jichang Town, Shuicheng District, Liupanshui City, Guizhou Province, resulting in the tragic loss of 43 lives, with 9 people still missing, and causing direct economic losses estimated at approximately 103 million Yuan. Following the landslide, significant debris and an unstable slope continued to threaten the nearby residences in the Pingzhai and Pingxing groups. Through comprehensive on-site investigations, this study identifies and analyzes both the geological environment and contributing factors of the Shuicheng landslide, providing an in-depth understanding of its triggering mechanisms. For the first time, a thorough stability analysis of the post-landslide residual deposits and the adjacent unstable slope under varying precipitation conditions is presented. Additionally, we performed a dynamic behavior analysis of the unstable slope using rheological models and depth-averaged approaches. The findings provide essential insights into the dynamical mechanisms driving secondary landslide disasters and are crutial for safeguarding the lives and properties of residents at the slope toe.

       

    /

    返回文章
    返回