| 大兴安岭北部多年冻土地区路基沉陷研究 |
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| 引用本文： | 原喜忠.大兴安岭北部多年冻土地区路基沉陷研究[J].冰川冻土,1999,21(2):155-158. |
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| 作者姓名： | 原喜忠 |
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| 作者单位： | 内蒙古大兴安岭林业设计院!牙克石市，022150 |
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| 摘 要： | 通过对该区４个路段１２个断面为期３ａ的路基沉陷观测并结合线路普查和分析表明，多年冻土路基稳定性与地基的水、热状况密切相关，受自然环境和人为因素的制约。合理布线、保护植被、改善排水、合理确定路基高度以及设置护坡、基底反铺塔头、采用土工聚合材料和无基管涵结构等，是保持该地区路基稳定的有效措施。
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| 关 键 词： | 冻土 路基 沉降 多年冻土区 大兴安岭 |
Study on Thaw Settlement of Subgrade in Permafrost Regions in the Northern Part of Da Hinggan Mountains |
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| YUAN Xizhong.Study on Thaw Settlement of Subgrade in Permafrost Regions in the Northern Part of Da Hinggan Mountains[J].Journal of Glaciology and Geocryology,1999,21(2):155-158. |
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| Authors: | YUAN Xizhong |
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| Abstract: | Based on the investigation and the observation of thaw settlement of subgrade under different ground temperature regimes in the northern part of Da Hinggan Mountains, this paper presents the law of thaw settlement of subgrade in continuous permafrost zones in Da Hinggan Mountains. The key factor controlling the amount and the process of thaw settlement of subgrade is permafrost conditions. The change of permafrost environment controls the stability of the subgrade. The influences of vegetation,supra-permafrost water and height of embankment on the permafrost environment and the stability of subgrade are analyzed. Some measures for anti-thaw settlement of subgrade in the zones of permafrost with higher ice content are suggested, such as using non-masonry foundation pipe culvert, geotextile material and improving drainage condition. |
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| Keywords: | permafrost subgrade thaw settlement |
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