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Highway Engineering Environment and Environmental Zoning in Plateau Permafrost Regions
| 题名： | Highway Engineering Environment and Environmental Zoning in Plateau Permafrost Regions |
| 正文语种： | 中文 |
| 作者： | Yuan Xizhong Sun Lijuan Liu Yongzhi |
| 作者单位： | Key Laboratory for Special rea Highway Engineering of Ministry of Education, hang'an University,Xi'an 710064;State Key Laboratory of Frozen Soil Engineering, old and rid nvironmental Research Institute, S,Lanzhou 730000 Key Laboratory for Special rea Highway Engineering of Ministry of Education, hang'an University,Xi'an 710064 State Key Laboratory of Frozen Soil Engineering, old and rid Environmental Research Institute, S,Lanzhou 730000 |
| 关键词： | 道路工程 冻土地区 地层温度场 |
| 摘要： | The influence of engineering factors on the geocryological environment has the char acteristic of thermal zone. The predominantly continuous permafrost area can be divided into the low temperature permafrost and the high temperature permafrost zone. In the low tempera ture permafrost zone, the subgrade is stable without taliks under it; while in the high tempera ture permafrost zone, the subgrade is unstable with taliks and plenty of groundwater under it. When geocryological environment changes, the influence of raising temperature of frozen ground with various ice content on the stability of subgrade is different. So the mean annual tempera ture and the ice content are adopted as the key indexes in the highway environment zoning sys tem. In accordance with the characteristics in different permafrost zones the suitable subgrade design principle is chosen, the rational subgrade structure and the suitable countermeasures are decided, making the structures integrate with the environment. |
| 会议日期： | 20050625 |
| 会议举办地点： | 西安 |
| 会议名称： | 第五届交通运输领域国际学术会议 |
| 出版日期： | 2005-06-25 |
| 母体文献： | 第五届交通运输领域国际学术会议论文集 |
| 分类号： | U416.168 |
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