Yangtze estuary bottom sand transport rate measuring system and observation method

Abstract

The invention discloses a Yangtze estuary bottom sand transport rate measuring system and observation method, and the system comprises a sand collection barrel which is used for being buried in an observation point to collect bottom sand; a weight measuring instrument, used for acquiring the weight of the bottom sand in the sand collecting barrel; a dynamic balance module, used for keeping the sand collecting barrel in a set state; a pressure meter, used for acquiring water pressure in the sand collecting barrel; a waterproof acquisition module, used for acquiring data of the weight measuring instrument, the dynamic balance module and the pressure instrument; a wireless transmission module, used for sending the measurement data to an upper computer; a power supply module providing electric energy for components; and a high-pressure waterproof box, used for protecting all electric components from being damaged and wetted by water pressure. The sand collecting barrel and the sand quilt skirt are combined, and the weight measuring instrument, the dynamic balance module, the data acquisition instrument, the wireless transmission module and the power supply module are combined, so that the problems that a traditional sediment transport amount measuring system is poor in measuring precision, is greatly influenced by terrains and cannot observe the sediment transport amount in real time are solved, and the system is better applied to relevant scientific research projects of hydrological survey.

Description

technical field [0001] The invention belongs to the technical field of on-site hydrological measurement, and in particular relates to a measurement system and an observation method for the sediment transport rate at the bottom of the Yangtze River Estuary. Background technique [0002] In the Yangtze River Estuary area, suspended sediment and bottom sediment are often referred to as sediment moving in the form of suspended matter and sediment moving in the form of drifting matter. Compared with the upstream rivers, the sediment particle size in the Yangtze Estuary area is relatively fine Most of the sediment can be lifted to become suspended sediment under certain water flow conditions. Suspended sediment transport is the decisive factor for the long-term evolution of the riverbed in the estuary. Affected by the tidal reciprocating flow, the exchange of suspended and transported mass in the estuary area is frequent. The Changjiang Estuary Bottom sediment movement generally r...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a measurement system and observation method for the sediment transport rate at the bottom of the Yangtze River Estuary, so as to solve the problems of poor measurement accuracy, large influence by terrain, and inability to observe the sediment transport volume in real time in the traditional sediment transport regularity measurement method

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