黑龙江冻土路基融沉防控热棒技术及效能分析  

Technology and efficiency analysis of thermosyphon for frozen soil subgrade freezing settlement prevention of Heilongjiang Province

作　　者：王国峰[1] 武鹤[1] 田玉龙[2] 陈彦君[2] 辛德仁[3] 葛琪[1] 石桂梅[1] 于纪淼 魏建军[1] 罗志 WANG Guofeng;WU He;TIAN Yulong;CHEN Yanjun;XIN Deren;GE Qi;SHI Guimei;YU Jimiao;WEI Jianjun;LUO Zhi(Department of Civil and Architecture Engineering,Heilongjiang Institute of Technology,Harbin 150050,China;Longjian Road and Bridge Company Limited,Harbin 150010,China;Heilongjiang Highway Survey and Design Institute,Harbin 150080,China)

机构地区：[1]黑龙江工程学院土木与建筑工程学院,哈尔滨150050 [2]龙建路桥股份有限公司,哈尔滨150010 [3]黑龙江省公路勘察设计院,哈尔滨150080

出　　处：《黑龙江工程学院学报》2023年第4期1-6,24,共7页Journal of Heilongjiang Institute of Technology

基　　金：黑龙江省省属本科高校基本科研业务费科研项目(2019CX01);黑龙江伊哈公路工程有限公司科技项目(2017001)。

摘　　要：为探寻高纬度多年冻土地区路基融沉防控有效措施,以京漠公路瓦拉干至樟岭段为试验路段,设计热棒路基试验方案,针对现场4年5次采集的地温数据、路基变形监测数据进行对比分析。结果显示,试验段热棒的有效工作半径为3 m,最大工作半径可达4.5 m,热棒路基土层地温稳定深度范围在4.5 m以下,稳定温度为0℃左右,且试验路段路基底面的冻土稳定,未发生融沉现象,热棒技术对防控多年冻土路基融沉效果明显,但深度在0~4.5 m之间土层地温的变化受外界温度影响较大。In order to explore effective measures for preventing and controlling subgrade thawing settlement in high latitude permafrost regions,a thermosyphon subgrade test scheme was designed for the Walagan Zhangling section of the Jingmo Highway as a test section.Comparative analysis was conducted on the ground temperature data and subgrade deformation monitoring data collected five times in four years on site.The results show that the effective working radius of the thermosyphon in the test section is 3 m,and the maximum working radius can reach 4.5 m.The stable depth range of the soil temperature of the thermosyphon roadbed is below 4.5 m,and the stable temperature is around 0℃.The frozen soil on the base surface of the test road is stable,and there is no thawing settlement phenomenon.The thermosyphon technology has significant effects on preventing and controlling thawing settlement of permafrost roadbed,but the changes in the soil temperature between 0 and 4.5 m are greatly affected by external temperature.

关 键 词：道路工程 热棒技术 沉降 路基 高纬度地区 

分 类 号：U416.1[交通运输工程—道路与铁道工程]