Comprehensive test method for hydrothermal force in soil freezing process

Abstract

The invention discloses a comprehensive test system for the hydrothermal force in a soil freezing process. The system comprises a test mold internally provided with a test soil sample, a cold bath device for freezing the test soil sample through refrigeration, a soil mass stratification frost heaving deformation test device for testing the frost heaving deformation of the test soil sample, a watersupplementing device for simulating the water supplementation of underground water to the internal of the test soil sample, a water content detection device and a temperature detection device, and apermeable layer is arranged at the inside bottom of the test mold. The system has the advantages of simple structure, reasonable design, easiness in use and operation, good use effect, and realizationof simulation of the soil freezing process indoors. The invention also discloses a comprehensive test system for the hydrothermal force in the soil freezing process. The method includes the followingsteps: 1) obtaining the soil sample; 2) adding the sol sample into the mold; 3) sealing the mold; 4) performing freezing test on the soil sample, and recording test data; and 5, arranging the test data. The method has the advantages of simplicity, easiness in realization, good use result, and realization of testing the internal water content, the temperature and the vertical deformation amount ofthe soil in the freezing process.

Description

[0001] The patent application of the present invention is a divisional application of the invention patent application with the application date of April 10, 2015, the application number 201510169750.6, and the invention and creation name "Hydrothermal Comprehensive Test System and Test Method for Soil Freezing Process". technical field [0002] The invention belongs to the field of laboratory testing of subgrade engineering in permafrost regions, and in particular relates to a hydrothermal comprehensive test method for soil freezing process. Background technique [0003] my country's permafrost areas are widely distributed, among 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 ranks the largest in the world. Seasonal permafrost spreads over most of the country. The roads built in the above permafrost regions all have different disease forms. For example, the typical disease ...

AI Technical Summary

Problems solved by technology

[0004] 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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