Study on formation mechanism and three-dimensional stability evaluation of lateral drag landslide

被引：0
|
作者：
Li J. [1 ,2 ]
Xu Q. [1 ]
Zhang J. [2 ]
Yang X. [2 ]
Tang R. [3 ]
Li D. [4 ]
Wu N. [2 ]
Yan K. [2 ]
机构：
[1] State Key Laboratory of Geohazard Prevention and Geoenviroment Protection, Chengdu University of Technology, Sichuan, Chengdu
[2] Sichuan Institute of Geological Engineering Investigation, Sichuan, Chengdu
[3] School of Architecture and Civil Engineering, Chengdu University, Sichuan, Chengdu
[4] Chengdu Hydrogeology engineering Geology Center, Sichuan Bureau of Geology and Mineral Resources Exploration and Development, Sichuan, Chengdu
来源：
Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | 2023年 / 42卷
关键词：
drag landslide; formation mechanism; prevention measures; slope engineering; three-dimensional stability evaluation;
D O I：
10.13722/j.cnki.jrme.2022.0457
中图分类号：
学科分类号：
摘要：
A new type of rock landslide failure mode in red bed area，lateral drag landslide，is proposed after detailed field investigation and mechanics analysis of Fengyan village landslide in Yilong County，Nanchong City，Sichuan Province. During the movement of the main sliding body of the landslide in the heavy rain，the dragging force will be generated along the sliding direction of the contact zone of the boundary on both sides，which will lead to the dragging deformation of the slope on both sides. The longitudinal length of landslide is smaller than the transverse width and the surface lateral deformation shows obvious strong and weak zones. Firstly，the slope structure conditions，lithologic composition conditions，free face conditions and external triggering conditions which must be had for the occurrence of the drag landslide are systematically studied and identified. Then on the basis of the comprehensive force analysis of landslide，the three-dimensional stability evaluation model and criterion of main sliding body and dragging body are established. Finally，in order to prevent the subsequent deformation and failure mode of the drag landslide，the paper puts forward some suggestions on surface drainage and groundwater dredging ， supplemented by appropriate retaining engineering. The research findings have certain guiding significance for the prevention and control of red bed landslide. © 2023 Academia Sinica. All rights reserved.
引用
收藏
页码：4152 / 4161
页数：9
相关论文
共 24 条
  • [1] CHENG Qiang, KOU Xiaobing, HUANG Shaobin, Et al., The distributes and geologic environment characteristics of red beds in China[J], Journal of Engineering Geology, 12, 1, pp. 34-40, (2004)
  • [2] GUO Yongchun, Qiang XIE, WEN Jiangquan, Red beds distribution and engineering geological in China[J], Hydrogeology and Engineering Geology, 34, 6, pp. 67-71, (2007)
  • [3] WANG Lansheng, LI Yueguo, ZHAN Zheng, Formation mechanism and control of landslides happened in 1981 in the Western of Sichuan Province[J], Exploring the Nature, 1, pp. 44-46, (1982)
  • [4] ZHAI Guojun, Analysis of the basic characteristics and deformation mechanism of Kualiangzi Landslide in Zhongjiang, (2011)
  • [5] LIAO Qiulin, LI Xiao, LEE Souting, Et al., Occurrence ， geology and geomorphy characteristics and origin of Qianjiangping landslide in Three Geoges Reservoir area and study on ancient landslide criterion[J], Chinese Journal of Rock Mechanics and Engineering, 24, 17, pp. 3146-3153, (2005)
  • [6] HUANG Runqiu, ZHAO Songjiang, SONG Xiaobing, Et al., The formation and mechanism analysis of Tiantai landslide，Xuanhan county，Sichuan Province[J], Hydrogeology Engineering Geology, 32, 1, pp. 13-15, (2005)
  • [7] DU Guoliang, ZHANG Yongshuang, YAO Xin, Et al., Formation mechanism analysis of Wulipo landslide-debris in Dujiangyang City[J], Rock and Soil Mechanics, 37, Supp.2, pp. 493-501, (2016)
  • [8] WANG Zhihua, XU Bin, High resolution remote sensing survey and mechanism analysis for Yanmen village landslide[J], Chinese Journal of Rock Mechanics and Engineering, 28, 9, pp. 1810-1818, (2009)
  • [9] ZHANG Tao, XIE Zhongsheng, SHI Shengwei, Et al., Characteristics，geological causes and evolution of Shibangou landslide in Nanjiang County[J], Journal of Yangtze River Scientific Research Institute, 30, 7, pp. 33-37, (2013)
  • [10] LI Bin, FENG Zhen, ZHAO Ruixin, Mechanism of “14·9”rainstorm triggered landslides and debris-flows in the Three Gorges area[J], Hydrogeology and engineering geology, 43, 4, pp. 118-127, (2016)
123