| CPC G01W 1/14 (2013.01) [G06N 3/126 (2013.01)] | 5 Claims |
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1. A method for configuring slope regulation and storage measures based on flood regulation and storage capacity and water consumption control, comprising the following steps:
S1, collecting and organizing precipitation data of a basin;
S2, constructing an optimized configuration model based on a balance between flood regulation and storage capacity improvement and slope water consumption control, comprising the following steps:
S2-1, flood regulation and storage objective: maximizing a water storage ratio and a flood peak attenuation rate in a control unit to improve a flood regulation and storage capacity FRi, which is specifically as follows:
 wherein WSi represents a water storage ratio in a unit i; FPRi represents a flood peak attenuation rate in the unit i; Pi represents a precipitation in the unit i, mm; Ri represents a total runoff yield in the unit i, mm; ƒ represents a functional relationship of Ri with a precipitation, a slope gradient, and a vegetation coverage degree; Si represents a slope gradient in the unit i; Vi represents a vegetation coverage degree in the unit i; FPb,i represents a flood peak flow rate in the unit i without a slope vegetation construction measure, m3/s; and FPv,i represents a flood peak flow rate in the unit i with a slope vegetation construction measure,
 S2-2, water consumption control objective: minimizing a water demand and a transpiration of a vegetation on a slope to allow the water consumption control objective WCi on the slope, which is specifically as follows:
 wherein WDi represents a water demand of a vegetation in the unit i, mm; WDg,i represents a water demand of a grassland in the unit i, mm; WDƒ,i represents a water demand of a forestland in the unit i, mm; g represents a functional relationship of WDi with a vegetation coverage degree; Vi represents a vegetation coverage degree in the unit i; ETi represents a transpiration of a vegetation in the unit i, mm; and φ represents a functional relationship of ETi with a vegetation coverage degree;
S2-3, based on a maximum flood regulation and storage capacity and a minimum slope water consumption for multi-objective optimized configuration of the slope regulation and storage measures, transforming a multi-objective function into a single-objective function with a comprehensive benefit index CEi as a target; and calculating a maximum value of CEi through a trade-off relationship between flood regulation and storage and slope water consumption, wherein a corresponding slope gradient and coverage degree are optimal solutions, and a calculation formula for the comprehensive benefit index is as follows:
 wherein CEi represents a comprehensive benefit index for slope regulation and storage measures in the unit i; FRi represents a flood regulation and storage capacity index for the slope regulation and storage measures in the unit i; FR represents an average flood regulation and storage capacity for slope regulation and storage measures in different units; WCi represents a water consumption control index for the slope regulation and storage measures in the unit i; WC represents an average water consumption control value for slope regulation and storage measures in different units; and ω1 and ω2 represent weight values;
S3, initializing settings;
S4, computing an optimal comprehensive benefit of the slope regulation and storage measures with a genetic algorithm: calculating a fitness of each individual with the genetic algorithm, and evaluating performance of each individual according to a target, wherein an individual with a high fitness represents a high-quality solution, each individual is provided with a slope gradient and a coverage degree, and the target is the comprehensive benefit index for the slope regulation and storage measures;
S5, determining whether a number of iterations is maximized; if the number of iterations is maximized, terminating an iteration and outputting data to produce a slope gradient and a coverage degree corresponding to the optimal comprehensive benefit of the slope regulation and storage measures, such that a computation is completed; and if the number of iterations is not maximized, returning to the S4, and restarting the computation; and
S6, configuring a slope gradient and a vegetation coverage degree of the basin according to the slope gradient and the coverage degree corresponding to the optimal comprehensive benefit of the slope regulation and storage measures.
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