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An estuary region low-salt water taking judgment method

A regional and river water technology, applied in special data processing applications, complex mathematical operations, instruments, etc., can solve problems such as relying on historical salinity values ​​and only predicting daily average salinity values

Pending Publication Date: 2019-06-04
HOHAI UNIV
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Problems solved by technology

[0004] Purpose of the invention: In view of the fact that the salt tide has become an unavoidable problem for the whole society and the shortage of the traditional salinity prediction mechanism, the purpose of the invention is to provide a logistic regression model to predict whether water can be taken every hour, breaking away from the traditional mathematical model , while improving the defects of relying on historical salinity values ​​in traditional methods and being limited to predicting daily average salinity values, the salt tide upward tracing problem provides a more effective reference model

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  • An estuary region low-salt water taking judgment method
  • An estuary region low-salt water taking judgment method
  • An estuary region low-salt water taking judgment method

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Embodiment Construction

[0042] The present invention will be further explained in detail below in conjunction with the accompanying drawings and specific embodiments, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0043] This example involves a method for discriminating low-salt water intake dispatch in the estuary area. The water intake location is selected at the Modaomen Waterway, Pinggang Pumping Plant. The method includes the following steps:

[0044] Step 1: Obtain the predicted time t and T before the predicted time in the area by means of experimental measurement and consulting relevant data 2 During the time period (T 2 =200h) upstream flow and sea level;

[0045] Step 2: Calculate the past T at time t 1 During the time period (T 1 =168h) average flow rate According to the four-level indicators of flow rate, they are 2500m 3 Below / s, 2500m 3 / s to 3500m 3 / s, 3500m 3 / s to 4500m 3 / s, 4500m 3 / s above, ...

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Abstract

The invention relates to a low-salt water taking scheduling method for estuary regions. The method comprises the following steps: when predicting the salinity of a low-salt estuary, breaking through traditional daily average salinity prediction; carrying out time-by-time salinity research, meanwhile, introducing a gamma function to generate a historical weight effect, and innovatively introducinga logistic regression mode, so the complex problem of time-by-time salinity prediction is simplified, the method is characterized in that the method is simple, convenient, practical and innovative, and a more convenient reference model is provided for research of the salt tide upstream problem.

Description

technical field [0001] The invention relates to a water intake method, in particular to a method for discriminating low-salt water intake in estuary areas. Background technique [0002] Since the beginning of the 21st century, climate warming and abnormal atmospheric circulation have led to continuous droughts. Coupled with the influence of disorderly sand dredging in estuaries and other astronomical factors, the salt tide has become more and more severe. The problem of salt tide has become an unavoidable social problem for the whole society. Therefore, the study of the strength and distance of the salt tide upward is imminent. [0003] The salinity distribution of the estuary changes with time, and the upward movement of the salt tide is affected by changes in flood and dry seasons, ebb and flow, and storms. Most of the current research is based on mathematical models, which require a large amount of model boundary data, and The calculation time is long, and no specific re...

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Application Information

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IPC IPC(8): G06F17/18G06F17/50
Inventor 孔俊韩笑孙杰王青罗朝阳
Owner HOHAI UNIV
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