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天然和暴雨条件下的物质点滑坡变形机制分析

艾国栋, 李云青, 资丽君, 梁昌奇. 2023. 天然和暴雨条件下的物质点滑坡变形机制分析. 钻探工程, 50(5): 23-28. doi: 10.12143/j.ztgc.2023.05.004
引用本文: 艾国栋, 李云青, 资丽君, 梁昌奇. 2023. 天然和暴雨条件下的物质点滑坡变形机制分析. 钻探工程, 50(5): 23-28. doi: 10.12143/j.ztgc.2023.05.004
AI Guodong, LI Yunqing, ZI Lijun and LIANG Changqi, . 2023. Analysis of deformation mechanism of landslide under natural and rainstorm conditions based on material point method. DRILLING ENGINEERING, 50(5): 23-28. doi: 10.12143/j.ztgc.2023.05.004
Citation: AI Guodong, LI Yunqing, ZI Lijun and LIANG Changqi, . 2023. Analysis of deformation mechanism of landslide under natural and rainstorm conditions based on material point method. DRILLING ENGINEERING, 50(5): 23-28. doi: 10.12143/j.ztgc.2023.05.004

天然和暴雨条件下的物质点滑坡变形机制分析

  • 基金项目:

    湖南省地质院科学项目“湖南省典型地灾成因及早期识别监测预警和防治工程应用研究”(编号:HNGSTP202106);湖南省安全生产预防及应急专项资金项目“强降雨诱发地质灾害链预测预警模式研究”(编号:2021YJ009)

详细信息
    作者简介: 艾国栋,男,汉族,1972年生,高级工程师,博士,地质工程专业,主要从事矿产地质勘查研究工作,湖南省郴州市北湖区南岭大道1150-4号,lubing168@126.com。

Analysis of deformation mechanism of landslide under natural and rainstorm conditions based on material point method

  • 为准确评估边坡失稳后对滑动路径上建筑物及人们生命财产的威胁程度,本文以郴州某滑坡为例,利用物质点法,分别模拟了天然和暴雨两种工况下该边坡在开挖后的大变形破坏机制,并计算了其滑动距离,并将结果与传统有限元分析进行了对比。结果表明:(1)开挖前,该边坡在天然工况下处于基本稳定状态,在暴雨工况下处于失稳状态,而开挖后,该边坡在两种工况下都处于失稳状态;(2)开挖后该滑坡的滑动距离显著增大,在天然工况和暴雨工况下的滑动距离分别为20.11和24.12 m;(3)对比稳定性分析和大变形分析结果可知,开挖和降雨是该边坡失稳的两种主要因素,计算边坡失稳后的滑动距离可为评估其对滑动路径上建筑物的威胁程度提供理论参考,对提高边坡安全性防护有重要意义。
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出版历程
收稿日期:  2023-03-10
修回日期:  2023-06-10

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