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Flood forecast method dealing with influence on human activities

A technology for flood forecasting and human activities, applied in the fields of meteorology and data processing, it can solve problems such as difficult to judge and master, complex situations, etc., and achieve huge benefits of flood control and disaster reduction, huge power generation benefits, and improved flood forecasting accuracy.

Inactive Publication Date: 2016-09-07
STATE GRID CORP OF CHINA +2
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Problems solved by technology

These are just some of the usual situations. During the flood season, the situation is more complicated. The small upstream reservoirs and ponds and dams are stored in the early stage, and the amount of water released during the flood causes "unknown water"; this is real-time scheduling during the flood season. Difficult to judge and grasp

Method used

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  • Flood forecast method dealing with influence on human activities
  • Flood forecast method dealing with influence on human activities

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Embodiment Construction

[0012] Such as figure 1 , 2 As shown, this method of flood forecasting in response to the impact of human activities, the method includes the following steps:

[0013] (1) Divide the watershed into many unit watersheds in the flood forecasting model, calculate the production and confluence of each unit watershed, and obtain the outlet flow process of the unit watershed; then carry out the river flood calculation below the outlet to obtain the flow at the watershed outlet process; add the outflow process of each unit watershed to obtain the total outflow process at the outlet of the watershed;

[0014] (2) Carry out specific analysis according to the actual situation of each unit in the early stage, and independently set the early runoff coefficient;

[0015] (3) Carry out data analysis on the actual rainfall or hypothetical rainfall to be forecast and add forecast experience to enlarge or reduce the ratio of rainfall year-on-year;

[0016] (4) Manually adjust and control th...

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Abstract

Disclosed is a flood forecast method dealing with influence on human activities. The method comprises the steps that (1) a basin is divided into multiple unit basins in a flood forecast model, runoff calculation is carried out on each unit basin to obtain an outlet flow process of the unit basin, river flood routing in the downstream of an outlet is carried out to obtain a flow process of the basin outlet, and the flow out processes of the unit basins are added to obtain a total flow out process of the basin outlet; (2) concrete analysis is carried out according to early practical condition of each unit, and an early runoff producing coefficient is set independently; (3) the raining proportion is increased or decreased year-on-year via data analysis on practical or supposed raining to be forecasted and forecast experience; and (4) the parameter of the flood forecast model is controlled and adjusted manually.

Description

technical field [0001] The invention relates to the technical field of meteorology and data processing, in particular to a flood forecasting method dealing with the influence of human activities. Background technique [0002] With the vigorous development of society and the continuous construction of water conservancy projects, the number of medium and small water conservancy projects and medium and small reservoirs in each river basin is increasing, and the number of ponds and dams is even more numerous. The intensification of human activities makes flood forecasting more difficult. Especially in the dry years, the first flood watershed is heavily impounded, and the runoff coefficient is extremely low; the impoundment in the later period of the main flood is also quite common, which is half of the normal runoff coefficient. These are just some of the usual situations. During the flood season, the situation is more complicated. The small upstream reservoirs and ponds and da...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01W1/10
CPCG01W1/10Y02A10/40
Inventor 王进尤晶晶韩松潘雪松李光跃张永鑫
Owner STATE GRID CORP OF CHINA
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