Aiming at the problems of inadequate basic theory and lack of engineering experience in the construction of deep surface soil in Wanfu Coal Mine. it is required to collect the soil samples of the Wanfu deep well and to carry out the testing and analysis of the mechanical properties of the frozen soil. The results indicated:At the freezing temperature designed in this experiment. the u... https://foldlyers.shop/product-category/samsung-gs20/