STUDY ON MECHANICAL PROPERTIES OF DEEP ARTIFICIAL FROZEN SOIL
In order to obtain the mechanical properties of soil in a mining area of Huainan under artificial freezing conditions. Under different temperature and moisture content, uniaxial compressive strength test and frost heave characteristic analysis were carried out on different soil layers at different depths in a mining area of Huainan. The results show that the effects of moisture content and soil depth on frost heaving of soil samples are roughly the same by regression analysis. The mechanical properties of artificial frozen soil are greatly affected by temperature, water content and soil layer structure. As the temperature gradient decreases, the uniaxial strength of the four soils increas-es. The effect of moisture content on the compressive strength of frozen soil initially increases and then decreases. The compressive strength of medium sand is generally higher at-5 ℃, and the strength characteristics of stress-strain curve weaken compared with the other three kinds of soil with the decrease of temperature. The re-search results can provide some reference for the construction of Huainan mining area.
万方数据
维普
