An ice thickness monitoring device and method based on the principle of water body liquid-solid phase change volume change

Abstract

The invention discloses an ice thickness monitoring device and method based on the principle of volume change of liquid-solid phase transition of a water body. The device is composed of an organic glass pipe and a steel pipe fixedly installed together through a waterproof threaded joint. A protective sleeve is fixedly installed outside the organic glass pipe. A scale is engraved on the organic glass pipe, and a foldable tripod is installed on the organic glass pipe. A reversible top cover is installed at the top end of the organic glass pipe. A ball valve is fixedly installed at the end of thesteel pipe. The protective sleeve is composed of a thermal insulation layer, a deformation layer not losing elasticity in an extremely cold environment and an anti-floating layer made of a high-density material. The monitoring method includes the following steps: drilling an ice hole and putting the equipment into the ice hole, injecting a water body, and injecting oil after the liquid level is stabilized; contacting the tail end of the steel pipe with the bottom of the ice layer, and fixing the tripod; and carrying out reading and calculating the ice thickness during monitoring. The ice thickness monitoring device has a simple structure, can run stably and reliably in extremely cold climate and save labor, and facilitates periodic observation at fixed monitoring stations.

Description

technical field [0001] The invention belongs to the technical field of ice layer thickness measurement, and in particular relates to an ice thickness monitoring device and method based on the principle of water body liquid-solid phase change volume change. Background technique [0002] Freezing is a common natural phenomenon in cold regions. Among them, river ice plays an important role in the global climate system, and polar sea ice is an indicator of global climate change. Ice layer thickness is one of the most critical physical indicators in ice science and ice engineering research, a basic parameter to describe the state of river ice, sea ice, and reservoir ice, and one of the key indicators for the force of freezing on hydraulic structures. [0003] For a long time, ice thickness has been generally considered to be the most difficult physical indicator of sea ice or freshwater ice, and manual borehole measurement is the most common detection method to measure ice thickn...

AI Technical Summary

Problems solved by technology

This method needs to drill holes on the ice surface and measure with a straightedge. It is not suitable to observe the intersection position of the bottom of the ice layer, and the error is large. In addition, its low efficiency cannot meet the needs of continuous detection of fixed-point ice thickness.

[0004] At present, a variety of automatic ice thickness observation technologies have been developed at home and abroad. The application of mooring sonar and ultrasonic detection technology has realized the automatic monitoring of fixed-point ice thickness changes, but its measurement accuracy is easily affected by the monitoring environment and the physical properties of ice water. In addition, , sonar and ultrasonic detection technology have a large one-time investment, and the deployment of large-scale ice thickness observation devices is restricted by observation funds, which limits the development of ice engineering to refinement

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