Three-in-one small reservoir or silt dam flood season early warning method

Abstract

The invention discloses a three-in-one small reservoir or silt dam flood season early warning method, wherein three refers to a weather forecasting layer, a water level early warning layer and a floodcontrol emergency layer. The method specifically comprises the steps: in the weather forecasting layer, the rainfall p of different rainfall repetition periods can be predicted in advance according to the historical rainfall data around a reservoir, the rainfall p can be predicted on a large scale according to central or local meteorological stations, and the real-time rainfall p can be obtainedbased on selected precipitation stations; in the water level early warning layer, the water level h in front of a dam is predicted according to the rainfall p and the rainfall-runoff formula, or the water level h in front of the dam is monitored in real time, and then three-level water level early warning is carried out; and in the flood control emergency layer, according to the three-level earlywarning information, corresponding flood control emergency measures are issued, and early warning information and emergency information are automatically pushed to relevant organizations or individuals at the same time. The invention considers three kinds of rainfall forecasting, three kinds of water level early warning and three kinds of flood control emergency measures, and constructs a whole set of multi-angle, multi-level and multi-measure integrated early warning method, which can achieve the effect of safe flood passage in small reservoirs or silt dams in small watersheds.

Description

technical field [0001] The invention relates to the field of water conservancy, and mainly relates to the flood control early warning of small reservoirs and check dams. Background technique [0002] Small reservoirs refer to reservoirs with a storage capacity between 100,000 cubic meters and 10 million cubic meters. Among them, those with a storage capacity of 1 million cubic meters to 10 million cubic meters are small (1) type reservoirs with a storage capacity of 100,000 cubic meters to 100 million cubic meters. 10,000 cubic meters is a small (2) type reservoir. [0003] Warping dams refer to dam structures built for the purpose of retaining mud and silt in ditches at all levels in water and soil erosion areas. Reduce the sediment of the Yellow River. [0004] According to the "First National Water Conservancy Census Bulletin", 98,002 reservoirs of various types have been built nationwide, including 93,308 small reservoirs, accounting for 95.2% of the total number of re...

AI Technical Summary

Problems solved by technology

However, more abundant historical rainfall data are needed to draw the relationship curve of rainfall and runoff, flood peak relationship curve, flood regulation relationship curve, primary flood volume and rising storage capacity and maximum water storage capacity of the reservoir in advance under different working conditions of the reservoir. Generally small reservoirs, especially check dams, are extremely scarce in historical data. At the same time, the patent does not propose multiple early warning methods, and lacks flood control and rescue measures under different early warning levels

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