Assessment of debris flow risk in Mentougou District, Beijing, based on runout of potential debris flow

被引:0
|
作者
Li, Yongchao [1 ,2 ,3 ]
Zheng, Bowen [1 ,2 ,4 ]
Guo, Songfeng [1 ,2 ,4 ]
Zou, Yu [1 ,2 ,4 ]
Zhang, Yiwei [5 ]
Han, Xudong [6 ]
Zada, Khan [1 ,4 ,7 ]
Waqar, Muhammad Faisal [1 ,4 ]
Qi, Shengwen [1 ,2 ,4 ]
Chen, Jianping [3 ]
机构
[1] Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China
[2] Chinese Acad Sci, Innovat Acad Earth Sci, Beijing, Peoples R China
[3] Jilin Univ, Coll Construct Engn, Changchun, Peoples R China
[4] Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
[5] Zaozhuang Univ, Sch City & Architecture Engn, Zaozhuang, Peoples R China
[6] China Geol Survey, Ctr Hydrogeol & Environm Geol, Baoding, Peoples R China
[7] Natl Engn Serv Pakistan, Geotech & Geoenvironm Engn Div, Lahore, Pakistan
基金
中国国家自然科学基金;
关键词
debris flow; risk assessment; runout; SFLOW model; Beijing; SUSCEPTIBILITY;
D O I
10.3389/feart.2024.1426980
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
Debris flow is a prevalent geological disaster in Beijing, particularly in the Mentougou District, situated in the mountainous southwestern region of Beijing City. The past irrational exploitation of minerals has led to a substantial accumulation of slag, providing abundant loose materials for the formation of debris flow in the study area. Different from the traditional method of using hazard and vulnerability to carry out debris flow risk assessment, this paper proposes a debris flow risk assessment method based on (a) the possibility of debris flow occurrence, (b) the value of the disaster-affected object, and (c) the destructiveness of the debris flow. The possibility of 41 gully debris flows occurring was determined through theoretical calculations. Using the SFLOW model, the runout of the potential debris flow was simulated. On this basis, an investigation of the value of the disaster-affected objects was carried out. At the same time, according to the simulated movement information of debris flow, its destructiveness was determined. According to the results of the occurrence possibility of the debris flow, its destructiveness, and the value of the disaster-affected object, the risk levels of 41 potential debris flow gullies in the Mentougou District were obtained. The research results can guide the warning systems for debris flows in the Mentougou District of Beijing.
引用
收藏
页数:13
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