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Method for determining lagging response time of mutual conversion of river water and underground water under influence of river water and sediment regulation

A technology of response time and mutual conversion, applied in general water supply saving, design optimization/simulation, instruments, etc., can solve difficult lag time and other problems, and achieve the effects of short time consumption, wide application range and high controllability

Pending Publication Date: 2022-05-20
HENAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing technical methods to describe the hysteresis response are mainly moving average method, generalized linear model, generalized additive model, and impulse response function. Lag time for conversion

Method used

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  • Method for determining lagging response time of mutual conversion of river water and underground water under influence of river water and sediment regulation
  • Method for determining lagging response time of mutual conversion of river water and underground water under influence of river water and sediment regulation
  • Method for determining lagging response time of mutual conversion of river water and underground water under influence of river water and sediment regulation

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as figure 1 As shown, the present invention provides a method for determining the lag response time of river water and groundwater mutual transformation under the influence of river water and sediment regulation, comprising the following steps:

[0042] S101: Collect and process river and groundwater data;

[0043] Specifically, obtain the water and sediment parameter data of the first hydrological station and the second hydrological station, and the groundwater level data of each monitoring well between the first hydrological station and the second hydrological station; the water and sediment parameter data include water level, path Flow, sediment concentration and incoming sediment coefficient data.

[0044] S102: Based on the extreme random tree model, determine the main water and sediment factors that affect the change of groundwater level outside the river;

[0045] Specifically, the contribution rates of water level, runoff, sediment concentration and incom...

Embodiment approach

[0046] As an implementable manner, the following sub-steps are specifically included:

[0047] S1021: Set water level, runoff, sediment concentration and incoming sediment coefficient as characteristic values, and set GWL as target value;

[0048] S1022: divide the river and groundwater data into a training set and a test set;

[0049] S1023: In the extreme random tree classifier, set the number of trees to 500, the maximum feature value to 4, and the number of nodes to 2 to generate an extreme random tree model;

[0050] S1024: In the generated extreme random tree model, respectively predict the predicted values ​​of the training set and the test set by simulating the measured values ​​of the training set and the test set;

[0051] S1025: Combine the measured values ​​and predicted values ​​of the training set and the test set to calculate the AUC value, if AUC0.5, then Output the contribution rate of the feature value to the target value.

[0052] S103: Domesticate the or...

Embodiment 2

[0067] 1) Data collection and processing

[0068] This case selects the water and sediment parameter data of Huayuankou Hydrological Station (HYK) and Jiahetan (JHT) Hydrological Station in the lower reaches of the Yellow River from 1983 to 2015, including water level (WL), runoff (FR), sediment concentration (SSC) and Sand Coefficient (ISC) data; and groundwater level data from 4 monitoring wells YY1, ZM18, FQ12 and KF10 outside the channel between Huayuankou Hydrological Station and Jiahetan Hydrological Station. The above water and sand parameters and groundwater level data were all obtained from the Water Situation Daily website of the Yellow River Water Conservancy Commission and the Yellow River Statistical Yearbook. By matching and combining the water and sediment parameter data of Huayuankou hydrological station with the groundwater level data of YY1 and ZM18, and combining the water and sediment parameter data of Jiahetan hydrological station with the groundwater leve...

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Abstract

The invention provides a method for determining lagging response time of mutual conversion of river water and underground water under the influence of river water and sediment regulation. The method comprises the following steps: 1, collecting and processing river and underground water data; 2, determining main water and sediment factors influencing the change of the underground water level outside the river channel based on an extreme random tree model; and 3, domesticating the original DNLM model, and analyzing by using the domesticated model to obtain the lag response time of the underground water level to the main water and sediment factors of the river. The method not only can quantify the lagging response time of the mutual conversion of the river water and the underground water, but also can improve the simulation efficiency, reduce the implementation cost and quickly process data.

Description

technical field [0001] The invention relates to the technical field of hydrogeological research, in particular to a method for determining the lagging response time of mutual transformation of river water and groundwater under the influence of river water and sediment regulation. Background technique [0002] Groundwater is the world's largest freshwater resource and plays an important role in maintaining human health, energy and food security, socioeconomic development, ecosystem services, and biodiversity. However, the lateral flow of water, matter (solids and solutes), and energy between a river and surrounding groundwater is influenced by natural and anthropogenic factors such as rainfall, land use, evapotranspiration, dam operation, flood frequency, and groundwater abstraction. And the vertical exchange has changed significantly. In particular, river runoff and water level fluctuations under the influence of river water and sediment regulation will not only change the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/27G06F119/02
CPCG06F30/27G06F2119/02Y02A20/152
Inventor 赵清贺卢梦雯丁圣彦景亚茹洪振东卞子亓王鹏雷雅凯
Owner HENAN UNIVERSITY
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