Coastal water environment regulation and simulation based on tidal power control

Hua Wang,Jinhe Zhu,Wei Xu,Pei Liu

doi:10.1051/matecconf/201824602027

Hua Wang, Jinhe Zhu + Show 2 more

Open Access

https://doi.org/10.1051/matecconf/201824602027

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Abstract

As the carrier of water resources, water environment and water ecology, river course is very important to human and ecological environment in coastal areas. The rapid economic development of coastal areas needs to take into account the improvement of regional water environment in order to achieve a higher level of development. The characteristics of coastal water environment are closely related to tidal fluctuation. It is an important direction for coastal water control to improve the water environment and restore the self-purification capacity of the river by guiding and draining the tidal power. In this paper, the YACHONG River Basin, which borders Macau and Zhuhai, is selected as the study area. The semi-exchange period and water exchange rate are taken as the main evaluation indexes. The water quantity and quality model is used to simulate the scenario model and analyze the effect of water diversion and drainage regulation in different tidal periods. The results show that, compared with the drainage dispatch during spring tide, the drainage dispatch during neap tide prolongs the water exchange time, and the effect of water exchange is obviously better than that during spring tide. The research results of this paper provide reference for water environmental regulation in coastal area.

Highlights

Coastal areas are close to the sea, with large population and developed economy
There is a close relationship between the variation of YACHONG river water quality and tidal characteristics
According to the concentration variation diagram of conservative substances (Fig. 2), the drainage regulation has a great influence on the concentration of conservative substances in YACHONG River

Summary

Introduction

Coastal areas are close to the sea, with large population and developed economy. They are the most convenient region for overseas exchanges, trade and cross-border cooperation, and their geographical locations are very important. In order to improve the water environment in coastal area, related researches were carried out successively. Combined with the water quality situation of the coastal area, through the regulation of estuary sluice, water diversion at spring tide and drainage at neap tide, the self-purification capacity of river water can be gradually restored and the water environment quality of the region can be improved. The improvement of coastal water environment by drainage scheduling has been widely concerned [3,4]

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