Hazard Mitigation of a Landslide-Prone Area through Monitoring, Modeling, and Susceptibility Mapping

被引:0
|
作者
Gui, Meen-Wah [1 ]
Chu, Hsin-An [1 ]
Ding, Chuan [2 ]
Lee, Cheng-Chao [2 ]
Ho, Shu-Ken [2 ]
机构
[1] Natl Taipei Univ Technol Taipei Tech, Dept Civil Engn, Taipei 106344, Taiwan
[2] Sino Geotechnol Inc, Taipei 105407, Taiwan
关键词
large-scale slope; rainfall; ERT; mass rock creep; DSGSD; sliding susceptibility; hazard mitigation; DEFORMATION; FRAMEWORK; SLOPE; FLOW;
D O I
10.3390/w15061043
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Indigenous tribes living in the mountainous areas account for about one-fifth of the extreme poor of the world, and this has made their lives more vulnerable to climate change impacts and natural hazards. After a series of earthquakes and very strong typhoons, the tilting and cracking of dwellings, localized slope failure, and severe subgrade settlements, together with damages of retaining structures and drainage ditches along a section of the Provincial Highway No. 7A on the west wing of the Central Mountain Range in central Taiwan, have raised concerns to the safety of a nearby Indigenous settlement, which is situated at an elevation of about EL. +1800 m. This study investigated and identified the possible causes for a large-scale landslide-prone area on the Central Mountain Range by employing multi-temporal satellite and aerial images, site investigation, field instrumentation, geophysics tests, and uncoupled hydromechanical slope stability analyses. The results were then applied to deduce a sliding susceptibility map and remedial plans to prevent or mitigate the sliding in the vicinity of an Indigenous settlement. The infiltration of rainwater, an upraised river-bed elevation, and the erosion of the river bank at the toe of the large-scale slope were found to be the main triggering factors in inducing sudden and localized failures. Meanwhile, the process of mass rock creep was deduced to have activated the process of large-scale deep-seated gravitational slope deformation (DSGSD) on the study slope; the DSGSD could eventually turn into a huge and catastrophic landslide. The findings of this study would be valuable for formulating detailed countermeasures to protect and maintain the stability and safety of the Indigenous settlement located at the crest of the slope.
引用
收藏
页数:23
相关论文
共 50 条
  • [1] Landslide Susceptibility Mapping by Neuro-Fuzzy Approach in a Landslide-Prone Area (Cameron Highlands, Malaysia)
    Pradhan, Biswajeet
    Sezer, Ebru Akcapinar
    Gokceoglu, Candan
    Buchroithner, Manfred F.
    [J]. IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2010, 48 (12): : 4164 - 4177
  • [2] Assessment of landslide susceptibility for a landslide-prone area (north of Yenice, NW Turkey) by fuzzy approach
    Ercanoglu, M
    Gokceoglu, C
    [J]. ENVIRONMENTAL GEOLOGY, 2002, 41 (06): : 720 - 730
  • [3] Landslide susceptibility mapping for a landslide-prone area (Findikli, NE of Turkey) by likelihood-frequency ratio and weighted linear combination models
    Akgun, Aykut
    Dag, Serhat
    Bulut, Fikri
    [J]. ENVIRONMENTAL GEOLOGY, 2008, 54 (06): : 1127 - 1143
  • [4] Analysis of seismic hazard in landslide-prone regions: criteria and example for an area of Daunia (southern Italy)
    Del Gaudio, V.
    Pierri, P.
    Calcagnile, G.
    [J]. NATURAL HAZARDS, 2012, 61 (01) : 203 - 215
  • [5] Road widened through landslide-prone canyon
    Brown, JL
    [J]. CIVIL ENGINEERING, 2005, 75 (05): : 30 - 30
  • [6] Analysis of seismic hazard in landslide-prone regions: criteria and example for an area of Daunia (southern Italy)
    V. Del Gaudio
    P. Pierri
    G. Calcagnile
    [J]. Natural Hazards, 2012, 61 : 203 - 215
  • [7] Landslide-prone area retrieval and earthquake-inducing hazard probability assessment based on InSAR analysis
    Zou, Lichuan
    Wang, Chao
    Zhang, Hong
    Wang, Dong
    Tang, Yixian
    Dai, Huayan
    Zhang, Bo
    Wu, Fan
    Xu, Lu
    [J]. LANDSLIDES, 2023, 20 (09) : 1989 - 2002
  • [8] Landslide-prone area retrieval and earthquake-inducing hazard probability assessment based on InSAR analysis
    Lichuan Zou
    Chao Wang
    Hong Zhang
    Dong Wang
    Yixian Tang
    Huayan Dai
    Bo Zhang
    Fan Wu
    Lu Xu
    [J]. Landslides, 2023, 20 : 1989 - 2002
  • [9] Hazard risk assessment of landslide-prone sub-Himalayan region by employing geospatial modeling approach
    Javeria Saleem
    Sheikh Saeed Ahmad
    Amna Butt
    [J]. Natural Hazards, 2020, 102 : 1497 - 1514
  • [10] Structuring the Environment of Landslide-Prone Disaster and Its Mitigation in The District of Banyumanik
    Tjahjono, H.
    Suripin, S.
    Kismartini, K.
    [J]. 1ST UPI INTERNATIONAL GEOGRAPHY SEMINAR 2017, 2018, 145