Important-contribution-degree-based safety evaluation index system constructing method for small and medium-sized reservoir dams

A technology of safety evaluation and index system, which is applied in the field of construction of safety evaluation index system for small and medium-sized reservoirs and dams, can solve the problems of large subjectivity, lack of consideration of expert experience and knowledge, etc. The effect of system refinement

Inactive Publication Date: 2017-06-30
CHINA THREE GORGES UNIV
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Problems solved by technology

However, because the safety evaluation index system of small and medium-sized reservoir dams is a complex index system with multi-level, multi-indicator and uncertain characteristics, there are two problems in the selection of indicators in the existing methods: (1) qualitative judgmen

Method used

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  • Important-contribution-degree-based safety evaluation index system constructing method for small and medium-sized reservoir dams
  • Important-contribution-degree-based safety evaluation index system constructing method for small and medium-sized reservoir dams
  • Important-contribution-degree-based safety evaluation index system constructing method for small and medium-sized reservoir dams

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Embodiment 1

[0024] A method for constructing a safety evaluation index system for small and medium-sized reservoir dams based on important contribution degrees is characterized in that it includes the following steps:

[0025] Step 1: Calculate the importance of indicators and conduct preliminary selection of evaluation indicators;

[0026] Step 2: Calculate the index contribution degree by using the gray relational degree analysis method;

[0027] Step 3: Integrate the index importance and contribution rate into the index important contribution degree;

[0028] Step 4: Determine the criteria and thresholds for indicator screening;

[0029] Step 5: Select the indicators that have a greater contribution to the evaluation results, and build a safety evaluation index system for small and medium-sized reservoirs and dams.

[0030] Further, the specific steps of step 1 are: statistical literature data, analyzing the safety characteristics of small and medium-sized reservoir dams, based on th...

Embodiment 2

[0036] The determination of the dam safety evaluation index is the premise and key to the establishment of the dam safety evaluation system, which directly affects the establishment of the index evaluation standard and the scientificity and rationality of the evaluation results. In order to solve the problems existing in the existing system and method, the applicant Existing systems and methods have carried out in-depth and creative research work. The present invention proposes a new construction method for the safety evaluation index system of small and medium-sized reservoir dams based on the important contribution degree, based on the improved gray relational degree analysis method to quantify the important contribution degree of the index, and based on this to realize the screening and optimization of the index, Make the dam safety evaluation index system more scientific, refined and pertinent.

[0037] A method for constructing a safety evaluation index system for small a...

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Abstract

The invention discloses a method for constructing a small and medium-sized reservoir dam safety evaluation index system based on the important contribution degree, which includes the following steps: analyzing and researching the main influencing factors of the small and medium-sized reservoir dam safety through data analysis, field investigation, expert consultation and other methods , cause and degree of influence, using the Delphi method to conduct expert questionnaire surveys, calculating the importance of indicators, and initially selecting evaluation indicators; using the gray correlation analysis method to quantitatively calculate the contribution rate of the evaluation indicators to the evaluation results; assigning the importance and contribution rate combination In order to evaluate the important contribution of indicators; determine the index screening criteria and threshold; according to the screening criteria, retain the top k indicators with a large cumulative important contribution, and eliminate the smallest important contribution indicators, and construct a small and medium-sized reservoir dam safety evaluation index system. It avoids the subjectivity of artificial index selection and the rigidity of data analysis, making the dam safety evaluation index system more scientific, refined, and pertinent.

Description

technical field [0001] The invention relates to the technical field of system evaluation and reservoir dam safety risk research, in particular to a method for constructing a safety evaluation index system for small and medium-sized reservoir dams based on important contribution degrees, which is widely applicable to the safety evaluation of various small and medium-sized reservoir dams. It provides a new idea for constructing a reasonable comprehensive evaluation index system for dam safety. Background technique [0002] There are more than 98,000 reservoirs in my country, which is the country with the largest number of reservoirs and dams in the world. 96% of the dams that have been built are small and medium dams, which have played an important role in flood control, irrigation and power generation in and around cities in our country. Most of these small and medium-sized reservoir dams have been in operation for more than 30 to 40 years. Factors such as long dam age, impr...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/063G06Q50/06
Inventor 李浩平李悦佳唐傲翔欧阳俊李峰卞雪
Owner CHINA THREE GORGES UNIV
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