试验结果表明，围压的增大明显增强了冻土的塑性性能；
The. test results showed. the plasticity of frozen soil is increased obviously with increasing confining pressure.
从压力试验，塑性失效理论和自增强处理的角度提出以同尺寸单层容器的初始屈服压力作为超压处理压力。
Initial yield pressure of monolayered cylinder with the same size was considered as the SPT pressure, based on the analysis among pressure test, plastic fault theory and self enhancement treatment.
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