Discontinuities and Engineering Geological Significances of Strong Earthquake-Induced Daguangbao Landslide

被引：0

作者：

Cui S. ^{[1
]}

Pei X. ^{[1
]}

Huang R. ^{[1
]}

Zhang W. ^{[2
]}

Liang Y. ^{[1
]}

机构：

[1] State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu

[2] Institute of Mountain Hazards and Environment, Chengdu

来源：

Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University | 2019年 / 54卷 / 01期

关键词：

Geological structure; Ground water; Rock structure; Sliding zone; Wenchuan earthquake;

D O I：

10.3969/j.issn.0258-2724.20160480

中图分类号：

学科分类号：

摘要：

The Daguangbao (DGB) landslide is the largest landslide triggered by the 2008 Wenchuan earthquake and considered as one of the largest of these events in the world. In this paper, the geological cause of the DGB landslide was analysed on the basis of rich photographs, remote sensing images, and orientation data. The discontinuity features of the landslide scarp, slip zone, and deposition were investigated firstly, and then the formations of these discontinuities were studied. The effects of strong seismic shaking, geological discontinuities, and ground water on the DGB landslide were discussed. The results showed that the initiation and deposition of the DGB landslide were dominated by geological discontinuities such as local faults, bedding faults, and joint sets, which were developed during the formation of an anticline. Strong ground shaking of the Wenchuan earthquake induced the failure of these geological discontinuities, and ground water might have finally initiated the DGB landslide during the earthquake-induced discontinuity connectivity. © 2019, Editorial Department of Journal of Southwest Jiaotong University. All right reserved.

引用

页码：61 / 72

页数：11

共 38 条

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