A drilling type river bed sediment sampling device

Abstract

The invention relates to a drilling-type river bed sediment sampling device, which belongs to the field of water conservancy measurement; the device includes an operating platform provided with a steel cable hoist and its operator, a suspension lifting mechanism composed of steel cables, a sampler and its counterweight platform; the operation platform is fixed on the survey ship; one end of the steel cable hanging the hoisting mechanism is connected with the winch of the operation platform, and the other end of the steel cable is fixedly connected with the sampler. The cable is retracted; the other end of the steel cable suspended from the lifting mechanism is fixedly connected to the sampler; the counterweight platform is fixedly connected to the sampler and evenly distributed around it. The device can sample riverbed sediments in water areas such as reservoirs, downstream rivers, lakes, and ocean estuaries. It is used to accurately study the physical and chemical characteristics of sediments, and can obtain riverbed sediment samples with high fidelity and high precision.

Description

technical field [0001] The invention belongs to the field of water conservancy measurement, in particular to a drilling type river bed sediment sampling device. Background technique [0002] The dry bulk density (or dry density) of sediment on the bed surface is an important physical parameter, which affects the conversion of sediment weight and volume, the volume change of fine-grained sediment after compaction, the starting flow velocity of sediment and sediment, and the change of sand-carrying capacity of water flow , and the design of the similar scale of the river engineering model, etc., at present, it is still one of the key parameters that need to be studied when studying reservoir erosion and silting. Obtaining real and complete samples of sediments under different deposition conditions is very important for analyzing the chemical and physical characteristics of sediments. [0003] For sediment sampling in deep water areas, the gravity sampling method is currently ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that riverbed sediment is difficult to sample with high fidelity and high precision, and proposes a drilling-type riverbed sediment sampling device. It is lifted and lowered on the lifting rack in the sleeve; the drill barrel is drilled downward, and the sampling tube concentric with the drill tube is lowered synchronously but does not rotate, and the sand sample slides vertically into the sampling tube

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