贵德盆地席芨滩巨型滑坡前缘次级滑坡特征及其复活机理分析

王溢禧; 赵俊彦; 朱兴华; 于美冬; 陈彩虹

doi:10.16031/j.cnki.issn.1003-8035.202304030

贵德盆地席芨滩巨型滑坡前缘次级滑坡特征及其复活机理分析

doi: 10.16031/j.cnki.issn.1003-8035.202304030

长安大学地质工程与测绘学院，陕西西安　710054

基金项目: 国家自然科学基金重大项目—黄河流域地质地表过程与重大灾害效应(42041006)

详细信息

作者简介:
王溢禧（1999-），男，硕士研究生，主要从事地质灾害调查和防治研究。E-mail：954793179@qq.com

通讯作者:
朱兴华（1984-），男，教授，主要从事地质灾害形成机理及工程防治研究。E-mail：zhuxinghua@chd.edu.cn

中图分类号: P642.22
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- 被引次数: 0
出版历程
- 收稿日期: 2026-08-28
- 修回日期: 2023-08-23
- 网络出版日期: 2023-09-21

Analysis on characteristics and reactivtion mechanism of secondary landslides in the front part of the Xijitan Giant Landslide, Guide Basin

College of Geology Engineering and Geomatics, Chang'an University, Xi'an , Shaanxi　710054, China

摘要

摘要: 黄河上游地区位于构造活动剧烈的青藏高原东北缘，其复杂的地质条件孕育了大量的滑坡、崩塌等地质灾害。本文以青海省贵德县尕让乡江拉新村北席芨滩巨型滑坡前缘次级滑坡为研究对象，采用无人机航测、InSAR地表位移监测和现场调查等手段，详细分析了滑坡的地质环境条件、发育特征和复活机制。研究表明密集发育的结构面对次级滑坡的复活起到控制作用，集中降雨是诱发滑坡复活的关键因素，冻融循环作用是滑坡复活的重要影响因素。通过分析该滑坡，为黄河上游滑坡灾害链防灾减灾提供科学依据。
- 黄河上游 /
- 泥岩滑坡 /
- 贵德盆地 /
- 发育特征 /
- 复活机制
Abstract: The upper reaches of the Yellow River is located on the northeast edge of the Qinghai Tibet Plateau with intense tectonic activity, and its complex geological conditions have nurtured a large number of geological disasters such as landslides and collapses. This article takes the secondary landslides at the front part of Xijitan landslide on the north side of Jiangla Village, Garang Township, Guide County, Qinghai Province as the research object. Using unmanned aerial vehicle aerial survey, InSAR surface displacement monitoring, and on-site investigation methods, the geological environment conditions, development characteristics, and genetic mechanism of the landslide are analyzed in detail. It is found that the secondary landslides at the front edge of Xijitan landslide is currently in the state of deformation reactivation. Research has shown that densely developed structural planes play a controlling role in the reactivation of secondary landslides, and concentrated rainfall is a key factor inducing landslide reactivation. The freeze-thaw cycle is an important influencing factor for landslide reactivation.By analyzing the landslide, a scientific basis is provided for the prevention and reduction of the landslide disaster chain in the upper reaches of the Yellow River.
- upper reaches of the Yellow River /
- mudstone landslide /
- guide basin /
- developmental characteristics /
- revival mechanism

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图 1 席芨滩滑坡概况图

（a）席芨滩滑坡位置图（b）席芨滩滑坡分期图（c）席芨滩滑坡剖面图^[15]（d）次级滑坡航拍图（e,f,g）席芨滩滑坡分期发育特征^[15]

Figure 1. Overview of the Location of Xijitan Landslide

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图 2 滑坡卫星影像及特征

Figure 2. Landslide Satellite imagery and its characteristics

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图 3 贵德盆地地质图

Figure 3. Geologic Map of Guide Basin

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图 4 滑坡区地层岩性图

（a）滑坡区地层出露情况（b）次级滑坡剖面图（图2a）

Figure 4. Lithological Map of Landslide

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图 5 1#，2#滑坡形态特征

Figure 5. Morphological Characteristics of Landslides 1 # and 2 #

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图 6 2#滑坡平台分级

Figure 6. Classification of No. 2 landslide

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图 7 滑坡后缘裂缝展布情况

Figure 7. Distribution of cracks at the rear edge of the landslide

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图 8 滑坡监测点变形量

Figure 8. Deformation of landslide monitoring points

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图 9 滑坡竖直方向InSAR形变速率图（2018年—2021年）

Figure 9. Rate diagram in vertical direction of landslide

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图 10 滑坡节理倾向玫瑰花图

Figure 10. Rose Chart of Landslide Joint Tendency

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图 11 优势入渗促进结构面发育机制图

Figure 11. Mechanism diagram of preferential infiltration promoting the development of structural planes

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图 12 滑坡岩体破碎带

Figure 12. Rock mass fracture zone

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图 13 滑坡监测点形变速率曲线与降水量的关系

Figure 13. Relationship between deformation rate curve of landslide monitoring points and precipitation

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图 14 不同含水率泥岩应力-应变曲线

Figure 14. Stress-strain curve of mudstone with different water content

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图 15 滑坡监测点形变速率与温度的关系

Figure 15. The relationship between the deformation rate curve of landslide monitoring points and temperature

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图 16 滑坡成因机制图

Figure 16. Mechanism diagram of landslide formation

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