| 强、过盐渍土地区高速公路路基阻盐技术研究 |
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| 引用本文： | 刘军勇,张留俊.强、过盐渍土地区高速公路路基阻盐技术研究[J].路基工程,2013,0(6):70-74. |
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| 作者姓名： | 刘军勇 张留俊 |
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| 作者单位： | 1.1中交第一公路勘察设计研究院有限公司，西安 710065 |
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| 基金项目： | 青海省高等级公路建设管理局、中交第一公路勘察设计研究院有限公司和青海省交通科学研究所三方基金科研项目：察尔汗盐湖地区软弱盐渍土公路路基稳定性研究（KYHTF2011-05） |
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| 摘 要： | 依托察尔汗至格尔木高速公路工程试验段，分析总结了盐渍土地区盐分在路基中的迁移方式以及影响盐分迁移的因素。从隔断层铺筑、路基填料的控制、护坡道和排碱沟设置方面，研究了察尔汗盐湖区高速公路路基阻盐技术。现场阻盐效果检测结果表明:水、盐在砾类土路基内部迁移高度为50 cm，次生盐渍化临界高度为45 cm，未发现路基由于次生盐渍化引起的沉陷和不均匀沉降等病害；公路投入运营以来，经历过两个雨季和两个冻融期，路基和地基整体沉降量3个月为0～2 mm，采用的阻盐技术处治效果良好。
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| 关 键 词： | 强、过盐渍土地区 高速公路 路基 盐分迁移 阻盐技术 效果检测 |
| 收稿时间： | 2019-11-10 |
Study on Anti-salt Technology for Subgrade of Highway in High/Excessive Saline Soil Regions |
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| Authors: | LIU Junyong ZHANG Liujun |
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| Affiliation: | 1 (1. CCCC First Highway Consultants Co. , Ltd. , Xi＇an 710065, China; 2. School of Highway, Chang＇an University, Xi＇an 710064, China) |
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| Abstract: | Depending on the test section of Chaerhan-Golmud Highway, migration of salt in subgrade in saline soil regions was analyzed and the factors affecting the migration was summarized. From the aspects of paving at insulating layer, control of subgrade filling, settings of banquette and alkali discharge ditch, the anti-sah technology for subgrade of highway in Chaerhan Salt Lake Area was studied. The result of on-site effect test shows that the migration of water and salt in gravel soil subgrade is 50 cm high, the critical height of secondary salinization is 45cm, and no diseases of subgrade, such as subsidence and uneven settlement, caused by secondary salinization is found; since tile highway is put into operation, two rainy seasons and two thawing periods have been passed, and the overall settlement of the subgrade and foundation is 0 - 2mm in 3 months, demonstrating good treating result by anti-sah technology. |
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| Keywords: | high/excessive saline soil regions highway subgrade salt migration anti-salt technology effect test |
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