Hazard assessment of debris flow in Guangxi, China based on hydrodynamics mechanism

  • Daming Li
  • Hongqiang ZhangEmail author
  • Yanqing Li
  • Zhu Zhen
  • Shilong Bu
  • Xingchen Tang
  • Shuo Chen
  • Shan Luo
  • Shunfa Tian
  • Mingming Xiong
Original Article


This paper aims at developing a mathematical model of hazard assessment of debris flow (DF) by applying hydrodynamics mechanism (HM) in the judging of DF starting. On the basis of HM, finite-volume method has been used and the flow passages have been classified into ground channel, river channel, and overflow channel; hence, the simulating result of depth distribution could be adopted to judge DF starting by comparing with DF critical depth. Meanwhile, rainfall, terrain, geology, vegetation, and population have been selected as the impact factors, and normalization method has been utilized to calculate the five factors’ weights based on the synthesis of analytic hierarchy process and fuzzy-weighting method. Combining the impact factors’ weights with its digitized results, respectively, thus, DF hazard assessment could be achieved with the programming calculation of Fortran. Indeed, the assessment results have been validated by comparing with the statistical result of geological hazards distribution in Guangxi and the Quanzhou County Debris Flow Event in 2011. The validation results show that the mathematical model is reliable, and it is feasible in the hazard assessment of DF.


Debris flow Hazard assessment Mathematical model Hydrodynamics mechanism Validation Guangxi 



The authors wish to extend their gratitude to all reviewers and editors for their valuable advice. This research was financially supported by the National Natural Science Foundation of China (Grant no. 51079095), the Science Fund for Creative Research Groups of the National Natural Science Foundation of China (Grant no. 51021004) and the Assessment of the Impact of Climate Change on Design Standard for Drainage Planning in Tianjin (Grant no. 15JCYBJC22300). This work was supported by the State Key Laboratory of Hydraulic Engineering Simulation and Safety of Tianjin University.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.State Key Laboratory of Hydraulic Engineering Simulation and SafetyTianjin UniversityTianjinChina
  2. 2.Tianjin Climate CenterTianjinChina

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