River tidal bore automatic detection and real-time forecasting method based on water level and flow velocity

Abstract

The invention relates to a river tidal bore automatic detection and real-time forecasting method based on the water level and flow velocity. In the prior art, a single-signal river tidal bore automatic detection method is limited in detection capacity, inaccurate in detection and not high in precision. The river tidal bore automatic detection and real-time forecasting method comprises the steps of tidal bore automatic detection and real-time forecasting. In the tidal bore automatic detection step, when the water level is increased and increased continuously, the interval between the time when water level data start to be increased and the time when a corresponding tidal bore reaches the day before is larger than 24 hours, and a flow velocity meter measures whether the flow velocity flow direction is the reverse direction, whether a tidal bore reaches is judged. In the real-time forecasting step, according to the information of time when the corresponding tidal bore reaches all stations the day before and the information of real time when the tidal bore reaches downstream stations in the same day, the time when the radial bore reaches upstream stations is forecasted. The river tidal bore automatic detection and real-time forecasting method based on the water level and flow velocity is high in accuracy of tidal bore automatic detection, and solves the problem that forecasting methods are overly dependent on astronomical rules.

Description

technical field [0001] The invention belongs to the technical field of automatic detection, in particular to an automatic detection and real-time forecasting method of river tides based on water level and flow velocity, which can be used for automatic monitoring and real-time forecasting and early warning of river tides. Background technique [0002] The Qiantang River flows into the East China Sea in the Hangzhou Bay. The estuary is wide on the outside and narrow on the inside. The wide part reaches 100 kilometers, and the narrow part is only a few kilometers. As soon as the seawater enters the estuary, the water surface is wide, and the further inward it is, the more it is restricted by the terrain on both sides of the river. The seawater has to accumulate and accumulate higher and higher. In addition, the flow of the Qiantang River is blocked, which promotes the rise of the water level, like an upright river. wall of water. When the seawater from the back keeps pouring i...

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Problems solved by technology

At the same time, the real-time forecasting method provided by the present invention solves the problem of poor forecasting effect every other day

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