A technical method for using tidal resources to simultaneously improve the hydrodynamics of rivers and lakes in coastal cities

Abstract

The invention discloses a technical method for using tidal resources to synchronously improve the hydrodynamics of rivers and lakes in coastal cities, including: setting river and lake communication paths, setting sluice groups, setting pumping pump stations and water replenishment points, rationally allocating river and lake water volumes and river and lake gate pumps Joint scheduling. The invention makes full use of tidal resources to synchronously replenish water in inland rivers and lakes in coastal cities, so as to make up for the problem of insufficient water in inland rivers and lakes. The circulating flow between and within the lakes simultaneously enhances the hydrodynamics of inland rivers and lakes; the tidal replenishment channel and the low tide drainage channel are set in different places, which effectively avoids the problem of reverberation of pollutants, and scientifically and rationally utilizes the tidal resources of the open sea. Simultaneously realized the water replenishment and hydrodynamic improvement of inland rivers and lakes in coastal cities.

Description

technical field [0001] The invention belongs to the technical field of river and lake water environment treatment, and in particular relates to a technical method for using tidal resources to simultaneously improve the water dynamics of rivers and lakes in coastal cities. Background technique [0002] Due to the relatively limited catchment area of ​​inland rivers and lakes in coastal cities, the natural inflow of water is small, especially in the dry season, and the natural inflow of water is seriously insufficient. Activity intervention, urban inland rivers and lakes often face more serious water environment problems. In addition, inland rivers and lakes in coastal cities undertake multiple functions such as tide blocking, freshwater storage, flood discharge, and waterlogging drainage. Tide blocking gates are often built where inland rivers, lakes and the open sea are connected, so they are gate-controlled water bodies. When the water level of inland rivers and lakes in t...

AI Technical Summary

Problems solved by technology

Exogenous water replenishment often involves water transfer across river basins, the project is complicated, the investment is large, and the amount of replenishment water is limited

Tide-receiving and replenishing water uses natural tidal power to speed up water body exchange and enhance water flow. However, when a single coastal city inland river or a lake is subjected to tidal-receiving and replenishing water, that is, when the tide-receiving and replenishing channel is the same as the ebb and flow drainage channel, due to the reciprocating flow of ebb and flow Most of the water that enters the inland river or lake from the high tide of the open sea is still the water discharged from the inland river or lake to the open sea at the ebb tide. The pollutants in the inland river or lake are discharged to the open sea with the water body at the ebb tide, and have not yet effectively diffused at the high tide Pollutants from the open sea will enter inland rivers or lakes along with water bodies. Therefore, although the water bodies in inland rivers or lakes are exchanged through tidal action, the exchanged water bodies are still the original water bodies, and their water quality has not been effectively improved.

In addition, the ebb and flow of the tide also tends to cause siltation in inland rivers and lakes. Therefore, relying solely on natural tidal power cannot effectively improve the water volume and insufficient hydrodynamic force in inland rivers and lakes in coastal cities.

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