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Analysis method of rainfall impact on river water quality based on basin network-river model coupling

An analysis method and basin technology, applied in the field of analysis of the impact of rainfall on river water quality, can solve problems such as the inability to obtain the law of the impact of rainfall confluence river water quality changes

Active Publication Date: 2021-04-27
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing river channel model cannot obtain the law of the influence of rainfall confluence on the change of river water quality, and provides a method for analyzing the impact of rainfall on river water quality coupled with the basin pipe network-river model

Method used

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  • Analysis method of rainfall impact on river water quality based on basin network-river model coupling

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specific Embodiment approach 1

[0016] Specific implementation mode one: combine figure 1 To illustrate this embodiment, the method for analyzing the impact of rainfall on river water quality by coupling the watershed pipe network-river model given in this embodiment specifically includes the following steps:

[0017] Obtain the generalized rainwater discharge outlet parameters of the watershed pipe network model during the rainfall process:

[0018] Input the information of rainfall intensity and rainfall duration into the watershed pipe network model to simulate the direction of rainwater runoff during the rainfall process. Combined with the types of pollutants in rainwater and the law of pollutant degradation, analyze the generalized rainwater discharge outlet flow and water quality information of the basin network model;

[0019] Coupling of watershed pipe network model and channel model:

[0020] According to the map registration technology, construct the association relationship between the generaliz...

specific Embodiment approach 2

[0024] Specific implementation mode 2: The difference between this implementation mode and specific implementation mode 1 is that the watershed pipe network model is specifically:

[0025] According to the distribution of various land types in the watershed, determine the proportion of rainwater infiltration in each area of ​​the watershed; according to the distribution of pipe networks and terrain changes in the watershed, determine the confluence of rainwater in the watershed;

[0026] According to the infiltration ratio of rainwater in each area of ​​the watershed, the distribution of the pipe network in the watershed, the terrain changes, the information of each pipe section and inspection well in the watershed, a watershed pipe network model is constructed.

[0027] Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0028] Specific implementation mode three: the difference between this implementation mode and specific implementation mode two is that the relevant information of each pipe section and inspection well in the watershed pipe network, and the relevant information of each pipe section and inspection well in the watershed pipe network are specifically:

[0029] The information of each pipe section includes: pipe section position, pipe section length, pipe section pipe diameter, pipe section material, pipe section buried depth, pipe bottom elevation and pipe section slope;

[0030] The information of the inspection well includes: the location of the inspection well, the elevation of the bottom of the well, the access method of the pipe section in the inspection well, and the elevation of the ground.

[0031] Other steps and parameters are the same as in the second embodiment.

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Abstract

The invention discloses a method for analyzing the impact of rainfall on river water quality coupled with a watershed pipe network-river model, and belongs to the technical field of urban river pollution control. The invention solves the problem that the existing river channel model cannot obtain the law of influence of rainfall confluence on river channel water quality change. In the present invention, the pipe network model and the river channel model use the rainwater discharge outlet along the river as an intermediate condition for coupling and association, and use the hydraulic water quality parameters of the pipe network sewage to directly correlate with the river hydraulic water quality parameters in the river channel model. As well as water quality information, determine the input location and total amount of pollutants in the river, set the time span of river water quality simulation, and obtain the river water level and pollutant concentration change law within the set time period. The invention can be applied to the analysis of the influence of the rainfall process on the water quality of the river.

Description

technical field [0001] The invention relates to a method for analyzing the impact of rainfall on river water quality, and belongs to the technical field of urban river pollution control. Background technique [0002] River pollution is an important issue that endangers the health of urban residents and affects people's quality of life. Rainfall confluence is one of the important factors affecting river pollution. Therefore, the analysis of the impact of rainfall on river water quality is of great significance for river pollution control. Researchers at home and abroad have done a lot of research on the migration and transformation of river pollutants, and on this basis, they have developed a variety of river models to simulate river water quality. The developed models can be divided into one-dimensional models and two-dimensional models according to their dimensions. Models and 3D models can be divided into river models and basin models according to the research scale, among...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/26G06K9/00
CPCG06Q10/0639G06Q50/26G06V20/182Y02A20/402Y02A20/152
Inventor 田禹李运东李俐频张天奇孙会航
Owner HARBIN INST OF TECH
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