黑龙江科技大学学报2025，Vol.35Issue(2)：268-274,7.DOI:10.3969/j.issn.2095-7262.2025.02.015
热融湖塘对冻土路基热稳定性的影响
Effect of thermokarst lakes on thermal stability of permafrost subgrade
闫人伟 1董彬林 2王桂福2
作者信息
- 1. 青海省交控建设工程集团有限公司,西宁 810000||青海省果洛公路工程建设有限公司,西宁 810000
- 2. 青海省交控建设工程集团有限公司,西宁 810000||青海省兴利公路桥梁工程有限公司,西宁 810000
- 折叠
摘要
Abstract
This paper seeks to address the issue of thermal disturbance caused by the thermokarst lakes on adjacent subgrade engineering in the permafrost regions of the Qinghai-Tibet Plateau.Taking a thermokarst lake along the Erzhi Highway Project as an example,the study involves establishing a numer-ical model of the temperature field of permafrost subgrade considering the effects of climate warming and thermokarst lakes by using finite element software,and analyzing the influence of the thermokarst lake and the distance between the thermokarst lake and the subgrade on the thermal stability of the permafrost subgrade.The results show that the thermokarst lake can affect the thermal state of surrounding perma-frost significantly,causing the degradation of permafrost.The nearer the thermokarst lake is to the sub-grade,the more evident its thermal disturbance effect is.With the thermokarst lake on one side,there is a different permafrost temperature on the left and right shoulders,which leads to uneven settlement of the subgrade.With the distance between the thermokarst lake and the subgrade over 20 m,the thermal state of the permafrost subgrade is basically not affected by the thermokarst lake.Therefore,the subgrade can be constructed beyond 20 m from the thermokarst lake.关键词
路基工程/多年冻土区/热融湖塘/温度场Key words
subgrade engineering/permafrost regions/thermokarst lakes/temperature field分类
交通工程引用本文复制引用
闫人伟,董彬林,王桂福..热融湖塘对冻土路基热稳定性的影响[J].黑龙江科技大学学报,2025,35(2):268-274,7.
