摘要
研究目的:为了及时掌握热棒路基的工程特性,把握热棒的降温效果,以便评价青藏铁路多年冻土区热棒路基的工程稳定性,本文选择青藏铁路一处热棒路基为研究对象,对该断面天然孔及左、右路肩孔2006～2009年的地温进行分析,研究热棒路基的降温效果。研究结论:通过分析得出0～1.5 m深度范围内地温受气温影响变化较大,路肩孔1.5～10.0 m之间由于热棒的主动降温作用,地温呈逐年下降的趋势,并且在青藏铁路运营后的前2～3年内地温下降明显,表明热棒能快速降低地温,保护多年冻土。
Research purposes： To master the engineering features of the thermal rod subgrade and the cooling effect of the thermal rod timely for evaluating the engineering stability of the thermal rod subgrade of the in permafrost region, this paper makes the comparatively analysis of the geothermal field of shoulder hole and right shoulder hole made between 2006 and 2009 of one thermal rod subgrade Railway and researches the cooling effect of the thermal rod s e. Qinghai - Tibet railway natural hole, the left of the Qinghai - Tibet Research conclusions ：From the analysis it can be seen that the ground temperature in depth between 0 and 1.5meters varies greatly under the influence of the air temperature. The ground temperature of the shoulder hole between 1.5 and 10.0 meters decreases year by year because of the cooling effect of the thermal rod, . and in the first 2 to 3 years after the Qinghai -Tibet Railway being open to traffic, the ground temperature falls obviously. So the thermal rod can make the ground temperature down quickly to protect the permafrost.
出处
《铁道工程学报》
EI
北大核心
2012年第9期30-33,共4页
Journal of Railway Engineering Society
关键词
青藏铁路
多年冻土
热棒
地温
Qinghai - Tibet Railway
permafrost
thermal rod
ground temperature
