Evaluation method for dynamic matching degree between water transportation capacity and land transportation capacity of cascade reservoir group

Abstract

The invention discloses an evaluation method for dynamic matching degree between water transportation capacity and land transportation capacity of a cascade reservoir group and relates to the fields of shipping development planning and integrated traffic design of the cascade reservoir group. The evaluation method comprises the following steps: giving a sequence of material transportation demand changing along with the time in a known time period sequence for the cascade reservoir group by taking the maximum dynamic matching degree sum of a reservoir area channel and an interconnecting road ofthe cascade reservoir group as an object on the basis of a grey correlation analysis principle according to the characteristic of dynamic change of the transportation capacity of the reservoir area channel; determining an upper limit and a lower limit of water transportation capacity of the cascade reservoir area channel as well as an upper limit of land transportation capacity of a correspondingland channel; calculating the matching degree sum of the water transportation capacity and the corresponding land transportation capacity of the cascade reservoir area channel at each time, and repeating multiple iterations and calculating to obtain an optimal matching degree. According to the method, transportation capacity between water transportation and interconnected land transportation in the reservoir area channel can be distributed more reasonably, and the shipping capacity of the cascade reservoir group is improved to the maximum extent.

Description

Technical field [0001] The invention relates to the field of shipping development planning and comprehensive transportation design for cascade reservoir groups, and in particular to a dynamic matching degree evaluation method between water transportation and land transportation for cascade reservoir groups. Background technique [0002] In the context of the comprehensive development of cascade water conservancy hubs in the river basin, the shipping capacity of the cascade reservoir area is affected by freight demand and other reservoir dispatch tasks such as flood control, power generation, and irrigation. Existing technologies mainly focus on improving the waterway transportation capacity of the reservoir area through methods such as waterway regulation, navigable water flow condition optimization, and multi-objective reservoir scheduling under consideration of the above influences. However, the existing technology ignores the cascaded reservoir waterway under the water-land cou...

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Problems solved by technology

The existing technology mainly focuses on improving the waterway transportation capacity of the reservoir area through channel regulation, optimization of navigable water flow conditions, and multi-objective reservoir scheduling under the consideration of the above-mentioned influences. The dynamic evolution process of the theoretical transport capacity and its interconnected land transport capacity cannot accurately evaluate the matching degree between water transport and land transport, and there are limitations, resulting in a mismatch between planned water transport capacity and land transport capacity, resulting in capacity allocation. Unreasonable, cascaded reservoir group shipping development planning and the actual demand for comprehensive traffic design have a large gap

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