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Tidal reach water environment capacity calculation method based on MIKE21

A water environment capacity and calculation method technology, applied in the field of environmental management, can solve the problems of human subjective factors, large calculation amount, and non-unique calculation results, etc., and achieve the effect of avoiding large-scale workload and interference

Pending Publication Date: 2019-10-11
CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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Problems solved by technology

[0003] The present invention provides a method for calculating the water environment capacity of tidal river sections based on MIKE21, so as to solve the problems that the existing method has a large amount of calculation, and the calculation result is not unique, and is greatly affected by human subjective factors.

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  • Tidal reach water environment capacity calculation method based on MIKE21

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Embodiment

[0021] refer to figure 1 , this embodiment provides a method for calculating the water environment capacity of a tidal river reach based on MIKE21, specifically as follows:

[0022] ①Basic data collection and on-site investigation in the early stage, comprehensive investigation of construction projects around the tidal river section, understanding of the current situation of water withdrawal and retreat in the river section, understanding of the water quality of all tributaries, and understanding of the water quality, discharge volume, and discharge of sewage outlets in the tidal river section. According to the method and situation, the sluice is considered as the sewage outlet, and the underwater terrain data, as well as the water level and flow data of the relevant water level stations and hydrological stations need to be collected;

[0023] ②Select the control section of the tidal river section, and divide different control units with the water quality target as the main co...

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Abstract

The invention provides a tidal reach water environment capacity calculation method based on MIKE21. The contribution coefficient of each drain outlet to each control section is obtained through earlycalculation of the MIKE21 water environment mathematical model, so that water environment capacity calculation is evolved into solution of a linear programming problem, and the water environment capacity of the tidal river reach can be calculated by adopting a simplex method. The problems that an existing method is large in calculation amount, not unique in calculation result, greatly influenced by human subjective factors and the like are solved. The method relates to the field of environmental management such as tidal reach water environment capacity and total pollution discharge limit control, and can be widely applied to calculation of the environment capacity of a bidirectional flowing water body under the tidal action, and even can be applied to calculation of sea area water environment capacity.

Description

technical field [0001] The invention relates to a method for calculating the water environment capacity of a tidal river section based on MIKE21, and belongs to the field of environmental management such as the water environment capacity of a tidal river section and the control of the total amount of pollutant discharge. Background technique [0002] One-way rivers generally use a one-dimensional water quality model to calculate their water environmental capacity, generalize the natural river into a straight river, simplify the unsteady flow into a steady flow, consider that the tributary flows into the mainstream to achieve a completely mixed state, and consider that the pollutants The concentration does not change much in the transverse direction of the section. The horizontal and vertical pollutant concentration gradients are ignored, and the sewage outlets along the river are generalized. After determining the value of the model parameters, the water environment capacity ...

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Application Information

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IPC IPC(8): G06Q10/06
CPCG06Q10/063
Inventor 邓伯均荆珑黄涛涛王莹焦艳彬
Owner CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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