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A Method for Analyzing Spring Runoff Water Sources of Northern Reservoirs

An analysis method and runoff technology, applied in data processing applications, reservations, calculations, etc., can solve problems such as complex action mechanisms, numerous factors affecting snowmelt and frozen soil, and difficulties in dividing water sources in the north

Active Publication Date: 2020-12-01
STATE GRID CORP OF CHINA +3
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] To sum up, it is difficult to divide water sources in the north, and there are many factors affecting snowmelt and frozen soil, and the mechanism of action is complex

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  • A Method for Analyzing Spring Runoff Water Sources of Northern Reservoirs
  • A Method for Analyzing Spring Runoff Water Sources of Northern Reservoirs
  • A Method for Analyzing Spring Runoff Water Sources of Northern Reservoirs

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Embodiment Construction

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0025] A method for analyzing spring runoff water sources of northern reservoirs in an embodiment of the present invention comprises the following steps:

[0026] S101. By analyzing the change law of the daily-scale runoff curve of the reservoir in spring in previous years, the spring runoff process is divided into the snowmelt runoff stage, the snowmelt rainfall runoff stage under permafrost conditions, and the rainfall runoff stage under permafrost conditions, so as to determine the runoff water source including snowmelt runoff , snowmelt rainfall runoff and rainfall runoff;

[0027] S102. Divide the daily-scale runoff of the spring reservoir into surface runoff and underground runoff, regard the surface runoff as snowmelt runoff, obtain the base flow ratio by calculating the ratio of the underground runoff to the daily-scale runoff, and draw the daily-scal...

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Abstract

The invention discloses a northern reservoir spring runoff water source analysis method. The method comprises the following steps of: determining the runoff water source by analyzing the change rule of the daily-scale runoff curve of the spring reservoir in the previous year; dividing the daily-scale runoff into surface runoff and underground runoff, calculating a base flow ratio, determining thestart-stop date of each runoff water source over the years according to the base flow ratio curve, drawing a box diagram of the start-stop date of each runoff water source, and describing the law of the start-stop date of the reservoir spring runoff water source based on the statistical characteristic values obtained by the box diagrams. The method can provide a basis for constructing a reliable and suitable spring runoff forecasting model, and can also be directly used for roughly forecasting the start-end date of each runoff water source in the spring of the next year.

Description

technical field [0001] The invention relates to the technical field of hydrological analysis and forecasting, in particular to a method for analyzing spring runoff water sources of northern reservoirs. Background technique [0002] Spring snowmelt runoff in northern China (such as Northeast China) is the main source of runoff in spring floods, and it is also the second concentrated water inflow period besides summer floods. At this time, it coincides with the season of farming and planting, and the demand for irrigation water is relatively large; at the same time, this period is also the period of water use for aviation. Under the premise of reasonable speculation on the date of snowmelt runoff in spring floods, scientifically and rationally formulate a reservoir scheduling plan, which can not only ensure the demand for agricultural water supply and navigation water use, but also reserve storage capacity for later flood control, and realize efficient development and utilizat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/02
CPCG06Q10/02
Inventor 李文龙李鸿雁韩臣王力田琳彭勇郑志王艳波
Owner STATE GRID CORP OF CHINA
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