EXPERIMENTAL STUDY AND ANALYSIS OF CHARATERISTICS OF SALINE SOIL OF TURPAN BASIN IN XINJIANG

In order to study characteristics of saline soil in high speed test ring road of Xinjiang test track, 399 experiments were carried out to reveal the plane and vertical distribution laws of saline soil, double-line method and collapsibility test were carried out to study the melt sinking characteristic, salt-heaving tests were carried out to get the salt-heaving laws of soil samples which have different salt content. The results show that the saline soil has variety, high salinity and even surface assembled, grade of foundation dissolution within 2m below the natural terrain is judged as the first level of weak collapsibility, and the salt-heaving can be restricted by increase of load and decrease of sulphate content.