Evaluation of the benefits of facility for disaster mitigation based on the risk of debris flow

被引:9
作者
Tian, Shujun [1 ]
Zhang, Jing [1 ]
Shi, Benben [1 ]
Zhang, Shanshan [1 ]
机构
[1] Southwest Univ Sci & Technol, Sch Civil Engn & Architecture, Mianyang 621010, Sichuan, Peoples R China
关键词
Facility disaster mitigation; Benefit evaluation; Debris flow; Risk assessment; SHALLOW-WATER EQUATIONS; WENCHUAN EARTHQUAKE; LANDSLIDE HAZARD; VULNERABILITY; CHINA; FRAMEWORK; EXAMPLE; MODELS; IMPACT; AREA;
D O I
10.1007/s10346-021-01776-5
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
Numerous collapses and landslides caused by the Wenchuan earthquake provide abundant loose materials for a large number of debris flows that occurred after the earthquake. Most of the check dams were silted or damaged by debris flow due to the increased volume of materials after the earthquake. Taking the debris flows in the Qinglin Basin in China as a case study, 43 sets of numerical simulations of debris flow with different probabilities of occurrence and different facility combinations were performed to obtain the submerged range, velocity, and mud depth of debris flow in the residential area. The total risk of the residential area is calculated on the basis of the risk of a single building according to the vulnerability of the property and population and combined with the depth and velocity of debris flow. According to the change in risk in the residential area under different facility combinations, a novel method of quantitative evaluation of the benefits of facilities for disaster mitigation based on risk reduction per unit height of facility (RRPH) has been proposed. According to the result of the analysis, the method can quantify the benefits of disaster reduction by different facilities, analyze whether existing facilities meet disaster mitigation goals, and determine the optimal facility height, facility combination, or existing facilities improvement and optimization scheme.
引用
收藏
页码:85 / 97
页数:13
相关论文
共 58 条
  • [31] Assessing debris-flow hazard in a watershed in Taiwan
    Lin, PS
    Lin, JY
    Hung, JC
    Yang, MD
    [J]. ENGINEERING GEOLOGY, 2002, 66 (3-4) : 295 - 313
  • [32] Design and performance of a novel multi-function debris flow mitigation system in Wenjia Gully, Sichuan
    Liu, F. Z.
    Xu, Q.
    Dong, X. J.
    Yu, B.
    Frost, J. D.
    Li, H. J.
    [J]. LANDSLIDES, 2017, 14 (06) : 2089 - 2104
  • [33] Effect assessment of debris flow mitigation works based on numerical simulation by using Kanako 2D
    Liu, Jinfeng
    Nakatani, Kana
    Mizuyama, Takahisa
    [J]. LANDSLIDES, 2013, 10 (02) : 161 - 173
  • [34] A method for assessing regional debris flow risk: an application in Zhaotong of Yunnan province (SW China)
    Liu, XL
    Lei, JZ
    [J]. GEOMORPHOLOGY, 2003, 52 (3-4) : 181 - 191
  • [35] An improved model for seismic risk assessment in Portugal
    Marques, Mario
    Monteiro, Ricardo
    Delgado, Raimundo
    [J]. INTERNATIONAL JOURNAL OF DISASTER RESILIENCE IN THE BUILT ENVIRONMENT, 2018, 9 (01) : 70 - 83
  • [36] Basic principles of multi-risk assessment: a case study in Italy
    Marzocchi, Warner
    Garcia-Aristizabal, Alexander
    Gasparini, Paolo
    Mastellone, Maria Laura
    Di Ruocco, Angela
    [J]. NATURAL HAZARDS, 2012, 62 (02) : 551 - 573
  • [37] A physical approach on flood risk vulnerability of buildings
    Mazzorana, B.
    Simoni, S.
    Scherer, C.
    Gems, B.
    Fuchs, S.
    Keiler, M.
    [J]. HYDROLOGY AND EARTH SYSTEM SCIENCES, 2014, 18 (09) : 3817 - 3836
  • [38] Fuzzy Formative Scenario Analysis for woody material transport related risks in mountain torrents
    Mazzorana, B.
    Fuchs, S.
    [J]. ENVIRONMENTAL MODELLING & SOFTWARE, 2010, 25 (10) : 1208 - 1224
  • [39] Consistent section-averaged shallow water equations with bottom friction
    Michel-Dansac, Victor
    Noble, Pascal
    Vila, Jean-Paul
    [J]. EUROPEAN JOURNAL OF MECHANICS B-FLUIDS, 2021, 86 : 123 - 149
  • [40] An example of a hazard and risk assessment for debris flows-A case study of Niwan Gully, Wudu, China
    Ourang, Chaojun
    Wang, Zhongwen
    An, Huicong
    Liu, Xingrong
    Wang, Dongpo
    [J]. ENGINEERING GEOLOGY, 2019, 263