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| 粗粒盐渍土水盐迁移试验研究 |
| Study on Water and Salt Migration in Coarse Saline Soil |
| 投稿时间：2019-12-17 修订日期：2020-01-19 |
| DOI： |
| 中文关键词: 路基工程 粗粒盐渍土 水盐迁移 细粒含量 时程特性 |
| 英文关键词: Subgrade engineering Coarse saline soil water and salt migration Content of fine-grained soil Time history characteristics |
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| 中文摘要: |
| 为探究粗粒盐渍土水盐迁移特性，通过室内试验开展了不同细粒含量和盐分供给源的水盐迁移及时空分布特性研究.结果表明：粗粒土中细粒含量不同，盐溶液和盐渍土两种盐分供给源有不同的迁移规律；随细粒含量增加：（1）盐溶液供给源水盐迁量逐渐减小，迁移速率最快的为细粒含量10%的土柱；（2）盐渍土供给源短期水分迁移高度减小，整个土柱盐分迁移量增大，盐分迁移最显著的是30%细粒含量的土柱；盐渍土地区道路路基宜通过控制细粒土含量来抑制粗粒盐渍土水盐迁移. |
| 英文摘要: |
| In order to investigate the characteristics of water and salt transport in coarse-grained saline soil, the water and salt transport and spatial-temporal distribution characteristics of different fine-grained content and salt supply sources were studied through laboratory experiments. The results showed that: different fine-grained content in coarse-grained soil, salt solution and salt soil supply sources have different transport laws; with the increase of fine-grained content: (1) the water and salt transport of salt solution supply source decreased gradually The quickest moving rate is the soil column with 10% fine-grained content; (2) the short-term water transfer height of the saline soil supply source decreases, the salt transfer of the whole soil column increases, and the most significant salt transfer is the soil column with 30% fine-grained content; the road engineering in the saline soil area should control the content of fine-grained soil to restrain the water salt transfer of the coarse-grained saline soil |
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