Multi-level fuzzy evaluation method for barrier lake

Abstract

The invention discloses a multi-level fuzzy evaluation method for a barrier lake. The method comprises the following steps: determining an evaluation index set U influencing subsequent development ofthe barrier lake; establishing a developable comment set V = {v1,v2,v3,v4} of the barrier lake; constructing a membership function equation,and establishing a fuzzy relation matrix R which is equal to[rij] n * m; determining the weight A of each grading index,and determining the weight of each grading index by adopting an improved analytic hierarchy process; adopting the maximum membership principle and finding out the Bmax with the maximum component in the B vector,enabling the evaluation corresponding to the Bmax to serve as the result of fuzzy comprehensive evaluation,and achieving comprehensive evaluation of the exploitability of the barrier lake. According to the method,a fuzzy group decision-making method and a multi-level decision-making theory are introduced,a multi-level multi-factor decision-making weir dam exploitability argumentation mathematical model is established from three criterion layers of engineering safety risks,resource feasibility and ecological environment benefits,the exploitability of the weir dam is evaluated,and reference and guidance are provided for permanent regulation of the weir lake.

Description

technical field [0001] The invention relates to the field of barrier lake control, in particular to a multi-level fuzzy evaluation method for barrier lakes. Background technique [0002] Barrier lakes will not only collapse and cause disasters, but also pose a threat to regional security and the safety of people's lives and property in the lower reaches of the river. They also contain rich hydropower resources and tourism resources. How to correctly deal with a large number of barrier lakes is a scientific problem. . The development and protection of conditional barrier lakes is not only the maximum use of their own value, but also one of the important measures for local post-disaster recovery and reconstruction, which can effectively promote the recovery and development of local economy and society. At present, most of the studies on barrier lakes focus on the emergency response measures of barrier lakes, and the evaluation of barrier lakes is mostly safety assessment to d...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a multi-level fuzzy evaluation method for barrier lakes to solve the feasibility evaluation problem of subsequent development after emergency disposal of barrier lakes. Fuzzy group decision-making method and multi-level decision-making theory establish a multi-level and multi-factor decision-making mathematic model for the development of barrier dams from the three criterion levels of engineering safety risk, resource feasibility, and ecological environmental benefits. To make an evaluation on the nature of the barrier lake and provide reference and guidance for the permanent improvement of the barrier lake

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