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本文通过饱水黄土试验,探索径向压裂法(以下简称“径压法”)测定冻土抗拉强度的可能性,以及与基本影响因素的关系。试验表明,径压法测定的抗拉强度结果,具有良好的稳定性,除土质、含水量和密度之内在因素外,与温度和机速有密切相关。径压法抗拉强度与温度、机速、破坏时间、机器行程之间,以及破坏时间与温度、机速之间都遵循各自规律,可用一定函数描述。径压法测定冻土抗拉强度是可行的。
In this paper, through the test of saturated water loess, the possibility of determining the tensile strength of frozen soil by the radial fracturing method (hereinafter referred to as “radial pressure method”) and the relationship with the basic influencing factors are explored. The test shows that the tensile strength measured by the radial pressure method has good stability and is closely related to the temperature and the machine speed except for the internal factors of soil quality, water content and density. Diameter tensile strength and temperature, speed, damage time, the machine stroke, as well as between the destruction of time and temperature, speed follow their own laws, can be described by a certain function. It is feasible to determine the tensile strength of frozen soil by the radial pressure method.