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.
机构:
Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R China
Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Chengdu 610041, Sichuan, Peoples R China
Chinese Acad Sci, IMHE, Chengdu 610041, Sichuan, Peoples R China
Univ Chinese Acad Sci, Beijing 100049, Peoples R ChinaChengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R China
Ourang, Chaojun
Wang, Zhongwen
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Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R ChinaChengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R China
Wang, Zhongwen
An, Huicong
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机构:
Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Chengdu 610041, Sichuan, Peoples R China
Chinese Acad Sci, IMHE, Chengdu 610041, Sichuan, Peoples R China
Univ Chinese Acad Sci, Beijing 100049, Peoples R ChinaChengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R China
An, Huicong
Liu, Xingrong
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机构:
Gansu Acad Sci, Geol Hazards Prevent Inst, Lanzhou 73000, Gansu, Peoples R ChinaChengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R China
Liu, Xingrong
Wang, Dongpo
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机构:
Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R ChinaChengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R China
机构:
Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R China
Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Chengdu 610041, Sichuan, Peoples R China
Chinese Acad Sci, IMHE, Chengdu 610041, Sichuan, Peoples R China
Univ Chinese Acad Sci, Beijing 100049, Peoples R ChinaChengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R China
Ourang, Chaojun
Wang, Zhongwen
论文数: 0引用数: 0
h-index: 0
机构:
Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R ChinaChengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R China
Wang, Zhongwen
An, Huicong
论文数: 0引用数: 0
h-index: 0
机构:
Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Chengdu 610041, Sichuan, Peoples R China
Chinese Acad Sci, IMHE, Chengdu 610041, Sichuan, Peoples R China
Univ Chinese Acad Sci, Beijing 100049, Peoples R ChinaChengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R China
An, Huicong
Liu, Xingrong
论文数: 0引用数: 0
h-index: 0
机构:
Gansu Acad Sci, Geol Hazards Prevent Inst, Lanzhou 73000, Gansu, Peoples R ChinaChengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R China
Liu, Xingrong
Wang, Dongpo
论文数: 0引用数: 0
h-index: 0
机构:
Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R ChinaChengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R China