Freshwater-capturing and accumulating-type emergency water supply dispatching method in salt-tide affected areas

Abstract

The invention relates to a freshwater-capturing and accumulating-type emergency water supply dispatching method in salt-tide affected areas and belongs to the technical field of water supply safety guarantee. The method includes the steps of S1, integrating Zhujiang river estuary-river network integral salt-tide mathematical models to accurately determine outer salinity boundaries and finely formulate water gate operation schemes in joint dispatching of delta joint gate pump groups; S2, establishing a water gate-river-reservoir-pump station joint dispatching based freshwater-capturing and accumulating-type emergency water supply dispatching model, wherein four modules for water gate freshwater capturing, river freshwater accumulating, reservoir salt dispatching and pump station freshwater supplying are arranged, and expression forms of the models include objective function and constraint conditions; S3, establishing a freshwater-capturing and accumulating-type emergency water supply dispatching evaluation index system of the salt-tide affected areas, namely a freshwater-capturing and accumulating-type evaluation index system; S4, determining a regional freshwater capturing and accumulating scheme by the aid of the freshwater-capturing and accumulating-type emergency water supply dispatching method in salt-tide affected areas. With the method, water supply safety in dry seasons in the salt-tide affected areas is effectively guaranteed.

Description

technical field [0001] The invention relates to a water supply safety assurance technology in the field of water supply, in particular to an emergency water supply scheduling technology for ensuring drinking water safety in areas affected by salt tides. Background technique [0002] The salinity tides in the Pearl River Estuary are serious in the dry season. Especially since the 1990s, the salt tides have become more frequent, larger in scope, higher in intensity, and earlier in time. The upward movement of the salt tide has caused the chlorine content of the water body to exceed the standard, which has greatly affected the water supply safety in the Pearl River Delta region. The affected areas include Macao, Zhuhai, Zhongshan, Guangzhou, Dongguan and other cities, with as many as 15 million people affected. [0003] In order to deal with the salt tide crisis, various alliances in the Pearl River Delta region often adopt the method of "grabbing fresh water and storing fresh ...

AI Technical Summary

Problems solved by technology

However, because the implementation of sluice dispatching is affected by the change of inflow water quality of inland rivers, runoff conditions of outer rivers, and salt tide activities, etc., in the process of emergency dispatching of freshwater storage, it is often d

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