A device for collecting deep underwater columnar sediments in shallow water

Abstract

The invention discloses a device for collecting underwater deep columnar sediments in shoal water. The device comprises a bracket and a chassis, wherein the bracket comprises an upper part and a lower part, and the lower part of the bracket is vertically arranged on the chassis; a lifting buckle, a winch I, a winch II and a distribution box are further arranged on the chassis; fixed pulleys are arranged on the chassis and the top end of the bracket, and a steel cable of the winch I bypasses the fixed pulley on the chassis and is fixed with the fixed pulley on the top end of the bracket; a tilt angle adjusting device is arranged between the upper part and the lower part of the bracket; a slide rail is arranged on the back surface of the bracket, and a drilling driving motor is arranged on the slide rail and is driven by the winch II to move up and down along the slide rail; a motor shaft of the drilling driving motor is connected with a drill pipe; an impeller is spirally arranged on the outer side of the drill pipe; and a sampling pipe is arranged in the drill pipe. The device has the advantages that the in-situ collection of the deep columnar sediments can be applied to the scientific research and the engineering application; and the device can be conveniently transported and fixed in the application process and is low in manufacturing cost.

Description

technical field [0001] The invention relates to a sediment sampling device in the field of environmental science or environmental engineering, in particular to a sampling device for collecting deep columnar sediments in shallow water areas. Background technique [0002] Sediments are an important part of the water environment, and the release of endogenous pollutants in sediments is one of the main sources of water quality deterioration. Therefore, to carry out water quality restoration of polluted water bodies, it is necessary to simultaneously or give priority to understanding the pollution status of sediments. For the collection of sediment / sediment, grab samplers and columnar gravity samplers are mainly used at present, among which grab samplers are mainly used to collect surface sediments, and columnar gravity samplers are mainly used to collect deep sediments. However, since the sediment is usually below the water surface and the load of the gravity sampler is limited...

AI Technical Summary

Problems solved by technology

However, since the sediment is usually below the water surface and the load of the gravity sampler is limited, the depth of the columnar sediment collected is often very limited (usually about 40 cm), and the operation is complicated

Some people try to collect sediment column samples by hammering with external force, but the problem that arises is that if the hammering is too deep (about 1 meter), the sediment sampling tube cannot be pulled out, or the sediment will be deposited when pulled out. layer destruction

Especially for the collection of deep columnar sediments in heavily polluted areas, there is no special equipment at present, and it is difficult to carry out investigation and research work on the pollution history of the study area, and it is also difficult to achieve accurate quantification for municipal work such as dredging

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