结合沪昆客运专线地质勘测阶段室内膨胀土常规及特殊试验,对膨胀土物理力学指标进行分析,提出了三种膨胀土防治措施：控制含水量、改性处理、置换法,并分别作了简要介绍,以指导实际施工中通过合理的工程措施改变土的力学性质,从而保障路基稳定。%Combining with conventions and special test of indoor expansive soil at geological survey phase of Shanghai-Kunming passenger special line,the essay analyzes physical mechanical index of expansive soil,and puts forward three measures for preventing expansive soil including controlling water content,modified processing,displacement method,and respectively makes brief description,so as to guide to change mechanical properties of soil through rational engineering measures in actual construction,and to guarantee the stability of roadbed.
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