The effects of water flow and temperature on thermal regime around a culvert built on permafrost

作     者：Loriane Périer Guy Doré C.R.Burn Loriane Perier Guy Dore C. R. Bum 

作者机构：Laval University Center for Northern Studies (CEN) 1035 Avenue De la m~decine QuObec Canada G1A OA6 Carleton University Dept. of Geography and Environmental Studies Ottawa Ontario Canada K1S 5B6 

出 版 物：《Research in Cold and Arid Regions》 (寒旱区科学（英文版）)

年 卷 期：2014年第6卷第5期

页      面：415-422页

核心收录：

学科分类：07[理学] 0705[理学-地理学] 070501[理学-自然地理学] 

基　　金：Transport Canada for financial support and Yukon Highways and Public Works for their support logistics and assistance during instrumentation at the new Beaver Creek Culvert and information regarding the rules for construction of culverts in Yukon 

主　　题：culvert thermal regime water flow water temperature modeling permafrost 

摘      要：Temperature and water flow through a culvert beneath the Alaska Highway near Beaver Creek,Yukon,were measured at hourly intervals between June and October *** data were used to simulate the effect of the culvert on the thermal regime of the road embankment and subjacent permafrost.A 2-D thermal model of the embankment and permafrost was developed with TEMP/W and calibrated using field *** relations were obtained between water temperatures at the entrance to the culvert,flow into the culvert,and water temperatures inside the *** temperatures at the entrance and inside the culvert had a linear relation,while water temperatures inside the culvert and water flow were associated by a logarithmic relation.A multiple linear regression was used to summarize these *** this relationship,changes in the flow rate and water temperatures at the entrance of the culvert were simulated to obtain predicted water temperatures in the *** temperatures in the culvert were used in the thermal model to determine their effects on the ground thermal regime near the *** of ±10% in water flow rate had no impact on the thermal regime underneath the *** of water temperature at the entrance of the culvert had a noticeable influence on the thermal regime.A final simulation was conducted without insulation beneath the *** thaw depth was 30 cm with insulation,and 120 cm without insulation,illustrating the importance of insulation to the ground thermal regime.