Drilling type riverbed sediment sampling device

Abstract

The invention relates to a drilling type riverbed sediment sampling device and belongs to the field of water conservancy measurement. The device comprises an operation platform, a suspension lifting mechanism, a sampler and a weight balancing platform, wherein the operation platform is provided with a steel cable winch and an operation machine of the winch and is fixedly arranged on a measurement ship; the suspension lifting mechanism is composed of steel cables; one end of each steel cable of the suspension lifting mechanism is connected with the winch of the operation platform and the other end of each steel cable is fixedly connected with the sampler; the winch is controlled by the operation machine of the operation platform, so as to draw back and release the steel cables of the suspension lifting mechanism; the weight balancing platform is fixedly connected with the sampler and is uniformly distributed around the sampler. The device can be used for riverbed sediment sampling of water areas such as a reservoir, a downstream river channel, a lake and an ocean river mouth, so as to accurately research the physical and chemical characteristics of the sediment; and the riverbed sediment sample can be acquired with high fidelity and accuracy.

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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