| 边坡渗流对冻土地区路基稳定性的影响分析 |
| |
| 引用本文： | 李东庆,魏春玲,吴紫汪.边坡渗流对冻土地区路基稳定性的影响分析[J].兰州大学学报(自然科学版),2000,36(3):175-179. |
| |
| 作者姓名： | 李东庆 魏春玲 吴紫汪 |
| |
| 作者单位： | 1. 中国科学院,寒区旱区环境与工程研究所,冻土工程国家重点实验室,甘肃,兰州,730000
2. 兰州大学,出版社,甘肃,兰州,730000 |
| |
| 基金项目： | 国家自然科学基金!(4 970 10 0 4 )，中国科学院知识创新经费资助项目 |
| |
| 摘 要： | 利用数值模拟方法，分析了在多年冻土地区修筑路堤后，夏季路式边坡积水通过路堤及在其下土壤的渗流过程中，由于对流换热所引起的路堤基底的不稳定现象。通过计算机数值模拟进一步证实，夏季路基边坡积水可导致路基基底之下的多年冻土上限下降，并使路基下形成凹型融化核或扩大已有融化核的深度和范围，从而加大路堤的融化下沉量和冬季的冻胀量，造成路基稳定性程度明显下降。
|
| 关 键 词： | 边坡渗流 路基 融化核 稳定性 冻土地区 |
| 修稿时间： | ： |
Analysis of the Influence of the Slope Seepage on Embankment Stability |
| |
| Li Dongqing,Wei Chunling,Wu Ziwang.Analysis of the Influence of the Slope Seepage on Embankment Stability[J].Journal of Lanzhou University(Natural Science),2000,36(3):175-179. |
| |
| Authors: | Li Dongqing Wei Chunling Wu Ziwang |
| |
| Abstract: | The unstable phenomen a of embankment on frozen soil were analyzed in summer by using the numerical mode ling, which was caused by the convection heat transfer of water from the slope a fter the construction of the embankment. The conclusions were that the permafros t table under the roadbed would fall and the concave thawed core was formed or f urther enlarged, thereby the thawing settlement in summer and frost heave in wi nter would be increased, so that the stabilities of embankment would obviously b e decreased. |
| |
| Keywords: | slope seepage embankm ent on frozen soil thawed core stability |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
