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对冻结法施工过程中冻结管破裂,以及盐水渗漏对冻土的三轴剪切强度的影响进行了研究。试验表明:人工冻结含盐砂土三轴剪切试验后的冻土呈明显的塑性剪胀破坏,破坏强度随着含盐量的增大而减小,且含盐量越大塑性破坏越明显,其随温度的降低而增大;人工冻结含盐土三轴剪切强度符合摩尔-库伦定律,内聚力、内摩擦角随着温度的降低而增大,随着含盐量的增大而减小。
The effect of freezing tube rupture during freezing construction and the triaxial shear strength of frozen soil by brine seepage was studied. The results show that the frozen soil after triaxial shear test of artificial frozen sandy soil shows obvious plastic dilatancy, the failure strength decreases with the increase of salt content, and the more the salt content, the more obvious plastic failure , Which increases with decreasing temperature. The triaxial shear strength of artificial frozen salty soil accords with the Mohr-Coulomb law. The cohesion and internal friction angle increase with the decrease of temperature and decrease with the increase of salinity .