Reservoir ecological desilting scheme decision-making method based on multi-target constraint

Abstract

The invention relates to a reservoir ecological desilting scheme decision-making method based on multi-objective constraints, which comprises the following steps: calculating economic benefits, social benefits and ecological benefits possibly generated by a desilting project according to a desilting scale in combination with sediment component geological exploration, calculating the cost of the desilting project according to the desilting scale, and establishing a cost-efficiency ratio function; simulating changes of reservoir area water flow conditions and water environment factors after each scheme is implemented, evaluating influences of each desilting scheme on river regime stability, river flood discharge, channel safety and ecological environment, quantitatively comparing adverse influence degrees of each scheme, and establishing an influence degree objective function; the method comprises the following steps: evaluating the sediment transport effect of a desilting project, calculating the back-silting rate of a desilting area, and defining and solving a reservoir capacity sustainable development index, thereby constructing a multi-objective constrained optimization system model, determining the weight coefficient of each objective function, and solving the optimal solution of a multi-objective model. Therefore, the optimal desilting scheme with the minimum adverse effect, the optimal sustainable reservoir capacity effect and the minimum cost-effectiveness ratio is determined.

Description

technical field [0001] The invention relates to the field of reservoir dredging, in particular to a decision-making method for a reservoir ecological dredging scheme based on multi-objective constraints. Background technique [0002] Reservoir ecological dredging can effectively increase the storage capacity of the reservoir, improve the water environment conditions in the reservoir area, restore the regulation and storage function of the reservoir, and at the same time, it is also conducive to the exertion of functions such as water supply, irrigation and power generation. The dredging can be used for embankment filling, construction and industrial materials, soil remediation, etc., which can alleviate the current shortage of mineral resources such as sand and gravel. [0003] At present, the decision-making method of reservoir dredging is still insufficient. In the past, dredging behaviors mostly referred to channel dredging projects and river sand mining projects, that i...

AI Technical Summary

Problems solved by technology

Therefore, the decision-making of reservoir dredging is relatively complicated. In addition to considering the general cost-benefit ratio and other economic factors, it also needs to consider factors such as the comprehensive impact of the environment and the restoration of reservoir functions. The decision-making process is very difficult.

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