The technology of artificial horizontal freezing method is increasingly being used in the soil reinforcement of urban underground projects such as shield-driven tunnelling. Compared with the freezing process. the thawing process is more complicated. and the thawing behavior of artificial frozen soil surrounding shield-driven tunnels has not been well investigated in both the academic ... https://www.countryscenesaddleryandpetsuppliers.shop/product-category/headstall-and-breast-collar-sets/