Hydrothermal comprehensive test system for soil freezing process

Abstract

The invention discloses a hydrothermal comprehensive test system for the freezing process of soil, which comprises a test mold with a soil sample to be tested inside, a cold bath device for freezing the soil sample to be tested by refrigeration, and frost heave deformation of the soil sample to be tested The tested soil layered frost heaving deformation test device, the water replenishment device for simulating groundwater to replenish water inside the tested soil sample, the water content detection device and the temperature detection device, and a permeable layer is set at the bottom of the inner side of the test mold. The system has a simple structure and design It is reasonable, easy to use, and has good effect, and can simulate the freezing process of soil indoors. At the same time, the present invention also discloses a hydrothermal comprehensive test method in the freezing process of soil, including steps: 1. Obtaining soil samples; 2. Installing molds; 3. Sealing molds; 1. Test data sorting, the method has simple steps, is convenient to realize, and has good application effect, and can test the internal water content, temperature and vertical deformation of the soil during the freezing process.

Description

Technical field [0001] The invention belongs to the field of indoor test and test of roadbed engineering in frozen soil area, and particularly relates to a water and heat comprehensive test system and test method in the process of soil freezing. Background technique [0002] Permafrost regions in my country are widely distributed, of which the area of ​​permafrost accounts for 22.3% of the country's land area, ranking third in the world, and the area of ​​high-altitude permafrost is the largest in the world. Seasonal frozen soil spreads over most of the country. There are different disease forms in the roads constructed in the above-mentioned frozen soil regions. For example, the typical disease forms in the permafrost regions are uneven deformation and longitudinal cracks in the roadbed, and the typical disease forms in the seasonal frozen soil regions are frost heave and frost boiling. Although the shape of road diseases in different regions is different, most of the diseases ...

AI Technical Summary

Problems solved by technology

[0003] At present, the hydrothermal comprehensive test technology for the indoor soil freezing process is still relatively small and immature. It is difficult to simultaneously observe and record the water content, temperature and vertical deformation of the soil inside the soil, which is only a limitation. Because of the observation of a single factor or some two factors, the integration performance is poor, the efficiency is low and the test accuracy is not high

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