A debris flow vulnerability calculating method

A calculation method and technology of debris flow, applied in the direction of calculation, design optimization/simulation, special data processing application, etc., can solve problems such as the correlation of debris flow intensity characteristics, inability to apply risk quantification research, etc., to achieve rapid and effective evaluation, improve applicability and The effect of accuracy

Inactive Publication Date: 2017-09-15
CHENGDU UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0009] This patent document uses the contribution weight superposition method to construct a quantitative expression for the evaluation of the vulnerability of disaster-affected bodies in debris flow active areas, and proposes a "integral function" model of debris flow disaster vulnerability, which provides a basis for quantitative evaluation of debris flow disaster vulnerability and risk assessment. However, this evaluation method only considers the response and resilience of the disaster-affected body, and is not related to the intensity characteristics of debris flow, so it cannot be applied to specific risk quantification studies.

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Embodiment 1

[0034] A method for calculating debris flow vulnerability, comprising the following steps:

[0035] a. First obtain the debris flow intensity index I DF According to the distribution of typical buildings, by fitting the relationship between the intensity characteristics of debris flow and the damage survey data, a debris flow building vulnerability evaluation model suitable for strong earthquake areas is constructed;

[0036] b. Define typical disaster-affected objects, conduct on-site investigation and data collection, classify the building material and structure classification standards in the study area, and select the most severely disaster-affected building types as typical buildings according to the statistical results;

[0037] c. Divide typical building loss types into four grades. The first grade is mud and sand deposition, the second grade is partial structural damage, the third grade is main structural damage, and the fourth grade is complete damage. Debris Flow In...

Embodiment 2

[0043] A method for calculating debris flow vulnerability, comprising the following steps:

[0044] a. First obtain the debris flow intensity index I DF According to the distribution of typical buildings, by fitting the relationship between the intensity characteristics of debris flow and the damage survey data, a debris flow building vulnerability evaluation model suitable for strong earthquake areas is constructed;

[0045] b. Define typical disaster-affected objects, conduct on-site investigation and data collection, classify the building material and structure classification standards in the study area, and select the most severely disaster-affected building types as typical buildings according to the statistical results;

[0046] c. Divide typical building loss types into four grades. The first grade is mud and sand deposition, the second grade is partial structural damage, the third grade is main structural damage, and the fourth grade is complete damage. Debris Flow In...

Embodiment 3

[0052] A method for calculating debris flow vulnerability, comprising the following steps:

[0053] a. First obtain the debris flow intensity index I DF According to the distribution of typical buildings, by fitting the relationship between the intensity characteristics of debris flow and the damage survey data, a debris flow building vulnerability evaluation model suitable for strong earthquake areas is constructed;

[0054] b. Define typical disaster-affected objects, conduct on-site investigation and data collection, classify the building material and structure classification standards in the study area, and select the most severely disaster-affected building types as typical buildings according to the statistical results;

[0055] c. Divide typical building loss types into four grades. The first grade is mud and sand deposition, the second grade is partial structural damage, the third grade is main structural damage, and the fourth grade is complete damage. Debris Flow In...

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Abstract

The invention provides a debris flow vulnerability calculating method comprising the steps of: a, building a building vulnerability evaluation model; b, selecting typical buildings; c, dividing loss types of the typical buildings into four levels and calculating the loss probability of buildings in each level under different debris flow intensity indexes IDF ; d, calculating the exceeding loss probability of buildings of each level and obtaining three exceeding loss probability matrix curves; e, superposing the three exceeding loss probability matrix curves, performing artificial interpolation according to a fitting function to make the loss probability achieve 1 value finally and obtaining a debris flow building vulnerability curve; f, for different types of roads, defining loss levels, and making the loss probability value achieve 1 value through an initial curve, trend fitting, artificial interpolation and weight determination and obtaining a debris flow road vulnerability curve. The method employs the loss probability-based evaluation model, so that evaluation results more accord with the reality and the applicability is greater.

Description

technical field [0001] The invention relates to the technical field of geological disaster prevention engineering, in particular to a method for calculating debris flow vulnerability. Background technique [0002] Debris flow, as a two-phase fluid between water flow and debris flow, acts quickly and strongly on mountainous areas due to its fast velocity, strong impact, and sudden outbreak. The main manifestations will seriously endanger the safety of residents, towns, transportation, water conservancy, and electric facilities in the disaster area for a long period of time in the future, and it is one of the important restrictive factors affecting post-disaster recovery and reconstruction. [0003] Conceptually, debris flow vulnerability refers to the negative response of the disaster-affected body under the action of a specific intensity of debris flow, which is usually measured by the degree of loss or loss value, and is an expression of the social attributes of natural dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 唐川黄勋李宁周伟朱静常鸣刘清华
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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