论文部分内容阅读
为提高察尔汗盐湖区高氯盐含量盐渍土工程的稳定性,对该地区多年水热和蒸发量变化情况进行分析,在寒季进行气温、地温和现场土体不同深度位置含水率和含盐量试验和研究。由试验结果总结出该地区寒季月平均气温和地温温差变化特征,昼夜地温温差变化特征,月平均地温时程变化与传递变化特征,以及推导表征了温度随时间和深度热传递速率的变化特征回归方程。最后分析了热效应是造成土体中水盐迁移的主导因素,寒季土体热效应作用随深度的下降而减弱,在土体的地表和地表下1.0～2.5 m范围内出现两个盐分聚集区,在今后的盐渍土工程设计和施工中应得到重视。
In order to improve the stability of saline soil with high chloride content in Chaer Khan Salt Lake, the change of hydrothermal and evaporation over the years in this area was analyzed. In the cold season, the water temperature, Salt content test and research. The results of the experiment summarize the characteristics of the monthly mean temperature and the temperature difference of the ground temperature in the cold season, the variation characteristics of the temperature difference between day and night, the time-dependent variation and transmission of the monthly average temperature, and derive the variation characteristics of the temperature with the time and depth of the heat transfer rate Regression equation. Finally, it is analyzed that the thermal effect is the main factor that causes the migration of water and salt in the soil. The thermal effect of the soil in the cold season is weakened with the decrease of the depth. Two salt accumulation zones appear in the range of 1.0 ~ 2.5 m under the surface and subsurface of the soil, In the future saline soil engineering design and construction should be paid attention.