Frost heaving measuring instrument capable of achieving hydrothermal coupling effect

Abstract

A frost heaving measuring instrument capable of achieving a hydrothermal coupling effect comprises a sample loading system, a refrigerating system and a data acquisition system. The sample loading system comprises an assembly frame, the assembly frame is provided with a sample placing chamber, and a water supplementing structure used for supplementing water to a sample is arranged on the assemblyframe. The frost heaving measuring instrument is ingenious in structure and reasonable in design, a heat conduction plate is connected with a refrigerating machine, the heat conduction plate providescooling capacity to achieve temperature control for a sample and increase the humidity of a test soil sample through the water supplementing structure arranged on the assembly frame when needed. The water content, the temperature and the like of the sample can be regulated and controlled, a plurality of sensors are mounted on the assembly frame, and parameters such as the temperature, the water content, the frost heaving force and the frost heaving displacement of the sample can be determined. The coupling effect of water, heat, force and other factors can be achieved, the frost heaving measuring instrument is accurate in test result and scientific and rigorous, and is provided with the water supplementing structure to supplement water to the sample so as to timely change the water contentof different soil layers of the sample.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering, and more specifically relates to a frost heave measuring instrument for realizing the coupling effect of water and heat. Background technique [0002] Permafrost refers to various rocks and soils below zero degrees Celsius and containing ice. Generally, it can be divided into short-term frozen soil (several hours / days to half a month), seasonal frozen soil (half a month to several months) and permafrost (also known as permafrost, which refers to the frozen soil that lasts for two years or more. unmelted soil). Frozen soil has rheological properties, and its long-term strength is much lower than the instantaneous strength characteristics. Because of these characteristics, engineering structures in permafrost regions must face two major dangers: frost heave and thawing settlement. [0003] In my country, the distribution area of ​​permafrost regions is 2.068×106km 2 , the distri...

AI Technical Summary

Problems solved by technology

[0005] In summary, how to solve the problem of low reliability of experimental results in traditional frozen soil frost heave measurement test equipment has become an urgent problem to be solved by those skilled in the art

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