Melting Characteristics of Sulfuric Saline Soil in Kuike Region of Xinjiang
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Abstract:
The low-speed table automatic balance centrifugewas used to perform the laboratory centrifuge simulation on the natural saline soil of the roadbed filling of Kuitun-Kelamayi highway of Xinjiang and to investigate the impacts of sanity content, temperature, and centrifugal force on the melting deformation of sulfuric saline soil. The research result showed that (1) the melting coefficient of sulfuric saline soil increases with the increasing of centrifugal acceleration speed, and is unrelated to sanity content; (2) the melting coefficient is most sensitive when the centrifugal force is less than 300kPa; and (3) the melting deformation is biggest when SO42- content is 2%. The nonlinear regression orthogonal analysis method was used to analyze the test data under five working conditions and to obtain the f~δ fitting formula of different sanity contents and temperatures. It suggested that the variation of temperature has insignificant impacts on the melting coefficient of natural saline soil when the centrifugal force is 300kPa. The research results can provide reference for the design and construction of highway engineering in the similar saline soil area.
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