Determination method of optimal water diversion flow rate for main stream of veined river network in estuary

Abstract

The invention discloses a method for determining the optimal water diversion flow rate of the main stream of the vein-like river network in an estuary. The present invention is divided into four parts, the first is to investigate and collect the plane distribution of the river network and the geometric characteristics of the river, and determine the weighted slope and weighted river width of the main river network; the second is to determine the key hydraulic elements of the mouth section, including the tidal range and the maximum tide and ebb Wide flow relationship, maximum water depth, minimum water depth at the mouth, maximum flood velocity and maximum ebb velocity; the third is to determine the maximum average discharge concentration of ammonia nitrogen from the pollution source of the main stream and the distribution law and peak value of the discharge flow along the process; the fourth is to determine the optimal water diversion and flushing flow of the main stream and the corresponding maximum average ammonia nitrogen concentration. The optimal water diversion flow determination method for the main stream of the vein-like river network in the estuary is given. Under the complex game conditions of tidal currents and runoff, the solution method for water diversion flow with the best effect of weakening the ammonia nitrogen concentration of river pollutants is given. The core technical problem in the most efficient and economically feasible method of pollution problem.

Description

Determination method of optimal water diversion flow for the main stream of estuarine leaf-veined river network technical field The present invention relates to the field of hydraulics and river dynamics, specifically the optimal water diversion of the main stream of the estuary leaf-veined river network. Flow determination method. Background technique my country has a vast territory, developed water systems, and dense river networks, which are accompanied by the rapid development of social economy and the pace of urbanization. Speeding up, the problem of pollutant control in the river network has become increasingly prominent. According to incomplete statistics, as of 2016, there were 295 cities above the prefecture level in the country. In the city, 1,811 black and odorous water bodies were found in 216 cities. The problem of pollution control in the river network has become a problem related to social civilization, urban A major ecological issue for development a...

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