Four-index rapid assessment method for danger of barrier body

A technology of damming body and risk, which is applied in the field of rapid assessment of the four indicators of damming body risk, and can solve problems such as wide gradation, loss of life, property and social economy, and loose structure

Active Publication Date: 2021-07-30
CHANGJIANG SURVEY PLANNING DESIGN & RES +1
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Problems solved by technology

[0004] The material composition of the dam is complex and changeable, the structure is relatively loose, the gradation is wide, a...

Method used

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  • Four-index rapid assessment method for danger of barrier body
  • Four-index rapid assessment method for danger of barrier body
  • Four-index rapid assessment method for danger of barrier body

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Embodiment

[0051] The present invention will now be described in detail by taking the application of the present invention to the risk assessment of a certain damming body as an example, which also has a guiding effect on the application of the present invention to the risk assessment of other damming bodies.

[0052] The average height of a dam is 82m, and the upstream water volume is 270m 3 / s, storage capacity (maximum storage capacity) 316 million m 3 , the volume of the dam is 20.37 million m 3 , the damming body is composed of cataclysmic rock formed by the disintegration of bedrock, residual slope gravel soil and muddy fine sand deposited in the original river bed, and the material of the damming body d 50 =118mm. Analyze the risk level of the damming body.

[0053] The risk assessment of a damming body in this embodiment includes the following steps,

[0054] Step 1. Take the storage capacity of the barrier lake, the upstream water flow, the material composition of the barrie...

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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...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/26
CPCG06Q10/0635G06Q10/06393G06Q50/265Y02A10/40
Inventor 蔡耀军栾约生王小波易杜靓子石纲张亚年朱云法侯赠何林青尹政兴罗杰
Owner CHANGJIANG SURVEY PLANNING DESIGN & RES
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