Four-index rapid assessment method for danger of barrier body

Abstract

The invention discloses a four-index rapid assessment method for danger of a barrier body. The method comprises the following steps that: step 1, the reservoir capacity of a barrier lake, the upstream incoming water amount, the material composition of the barrier body and the form of the barrier body serve as four indexes for barrier body danger division, and data of the four indexes are collected respectively; step 2, the reservoir capacity of the barrier lake, the upstream incoming water amount, the material composition of the barrier body and the numerical range of the barrier body form corresponding to different danger levels are set; step 3, according to the numerical value ranges corresponding to different danger levels set in the step 2, the danger levels of the collected data of the reservoir capacity of the barrier lake, the upstream incoming water amount, the material composition of the barrier body and the form of the barrier body are judged respectively, and the assigned values of the danger levels are determined; step 4, based on a weighting algorithm, a barrier body danger comprehensive discrimination value is obtained; and step 5, the danger of the barrier body is evaluated according to the barrier body danger comprehensive judgment value obtained in the step 4. The method has the advantages of comprehensiveness and integrity.

Description

technical field [0001] The invention relates to the technical field of risk assessment of damming bodies, more specifically, it relates to a rapid assessment method with four indicators of damming body risk. Background technique [0002] The damming body is formed by natural actions such as landslides, collapses, and debris flows, and forms a damming accumulation body to the river or valley. Barrier lakes generally have a short survival time, and the consequences of burst damage are serious, so it is necessary to quickly determine the risk of the barrier body. [0003] In 2011, Dong et al. used 43 dams in Japan, in 2016, Stefanelli et al. used 300 cases of dams in Italy, and in 2020, Shan Yibo et al. used 115 dams in the world with a qualitative description of the material composition of dams. , using the logistic regression method, established a method for judging the stability of the barrier dam ("Research on the Rapid Evaluation Method for the Stability of the Dam", Jour...

AI Technical Summary

Problems solved by technology

[0004] The material composition of the dam is complex and changeable, the structure is relatively loose, the gradation is wide, and the survival period is short. The collapse of the dam has caused major threats or losses to people's lives, property and social economy

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