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高位黄土滑坡特征与成因研究

张文学 王宏民

张文学, 王宏民. 高位黄土滑坡特征与成因研究[J]. 地震科学进展. doi: 10.19987/j.dzkxjz.2023-034
引用本文: 张文学, 王宏民. 高位黄土滑坡特征与成因研究[J]. 地震科学进展. doi: 10.19987/j.dzkxjz.2023-034
Zhang Wenxue, Wang Hongmin. Study on characteristics and genesis of high-localition loess landslide[J]. Progress in Earthquake Sciences. doi: 10.19987/j.dzkxjz.2023-034
Citation: Zhang Wenxue, Wang Hongmin. Study on characteristics and genesis of high-localition loess landslide[J]. Progress in Earthquake Sciences. doi: 10.19987/j.dzkxjz.2023-034

高位黄土滑坡特征与成因研究

doi: 10.19987/j.dzkxjz.2023-034
详细信息
    作者简介:

    张文学(1987-),工程师,主要从事岩土工程、地质灾害勘查设计、地质灾害危险性评估方面的工作。E-mai:916309884@qq.com

Study on characteristics and genesis of high-localition loess landslide

  • 摘要: 高位黄土滑坡具有高势能、突发性、隐蔽性、滑动速度迅速、威胁范围广、破坏冲击能力强等特点,破坏形式多为摧毁和压埋为主,是黄土地区防灾减灾、工程治理棘手难题。不同的地形地貌类型、地层岩性、水文地质条件、地质构造等对滑坡形成都具有本质上的差异。结合天水市麦积区大沟和平凉市静宁县仁大镇高位黄土滑坡典型实例,通过工程地质调绘、工程地质勘查、无人机高精度航测等技术手段,从空间分布、滑坡特征、成因、运动机理、成灾特点等方面进行了系统研究,结果表明,根据地形地貌归属可分为坡面型和沟谷型高位黄土滑坡,其中平凉市静宁县仁大镇滑坡属于坡面型,以“土浪”的形式运动,在运动时间上与滑坡启动具有同周期性和连续性,运动速度迅速,运动顺序为滑体脱离母体→土体滑动→土体堆积;天水市麦积区大沟属于沟谷型,以泥流的形式进行运动,滑坡滑动与堆积体启动在时间上具有一定的滞后性,速度相对前者较缓慢,运动顺序为滑体脱离母体→土体堆积→土体滑动→淤积,其运动、堆积特点和黏性泥石流基本相似。

     

  • 图  1  甘肃省活动断裂分布图[21]

    Figure  1.  Distribution Map of Active Faults in Gansu Province[21]

    图  2  滑坡区地形地貌、地层岩性影像图

    Figure  2.  Landform and formation lithology image of landslide area

    图  3  滑坡1—1剖面图

    Figure  3.  Profile 1-1 of Landslide

    图  4  滑坡区地形地貌影像图

    Figure  4.  Landform image of landslide area

    图  5  滑坡滑动及堆积剖面图

    Figure  5.  Slide and accumulation profile of landslide

    图  6  桩板式拦挡坝断面图

    Figure  6.  Section of pile-slab retaining dam

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出版历程
  • 收稿日期:  2023-03-20
  • 录用日期:  2023-05-15
  • 网络出版日期:  2023-05-08

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