A new approach for modeling landslide movement over 3D topography using 3D discontinuous deformation analysis

被引：37

作者：

Wang, Wei ^{[2
,3
]}

Zhang, Hong ^{[1
]}

Zheng, Lu ^{[4
]}

Zhang, Ying-bin ^{[5
,6
]}

Wu, Yan-qiang ^{[7
]}

Liu, Shu-guang ^{[1
]}

机构：

[1] Tongji Univ, Coll Civil Engn, Shanghai 200092, Peoples R China

[2] China Univ Geosci Wuhan, Fac Engn, Wuhan 430074, Peoples R China

[3] Kyushu Univ, Dept Civil & Struct Engn, Fukuoka 8190395, Japan

[4] Sichuan Univ, Hong Kong Polytech Univ, Inst Disaster Management & Reconstruct, Chengdu 610207, Peoples R China

[5] Southwest Jiaotong Univ, Minist Educ, Key Lab Transportat Tunnel Engn, Chengdu 610031, Peoples R China

[6] Southwest Jiaotong Univ, Sch Civil Engn, Dept Geotech Engn, Chengdu 610031, Peoples R China

[7] CEA, Crust Deformat Monitoring & Applicat Ctr 1, Tianjin 300180, Peoples R China

来源：

COMPUTERS AND GEOTECHNICS | 2017年 / 81卷

关键词：

Landslide movement; 3D topography; 3D-DDA; Ordered blocky topography; Contact detection; CHI-CHI EARTHQUAKE; TO-EDGE CONTACT; FACE CONTACT; DDA; SIMULATION; EXTENSION; BLOCKS;

D O I：

10.1016/j.compgeo.2016.07.015

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Landslide movement analysis over three-dimensional (3D) topography is crucial for hazard evaluation and prevention. This paper presents a new approach to simulate landslide movement considering the 3D spatial effects of both the landslide mass and topography using discontinuous deformation analysis (DDA). The approach involves two aspects: the ordered blocky topography (OBT) treatment for the base slope and an algorithm for fast contact detection between the landslide block (LB) and the OBT. By introducing the OBT treatment, the LB-OBT contact detection can be simplified from the global range to the local sub-topography using the current algorithm, which enhances the computation efficiency. The approach has been implemented in the 3D-DDA program. Finally, the capability and performance of the proposed approach for landslide movement modeling were well demonstrated by two numerical examples. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：87 / 97

页数：11

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