摘要
在昆仑山隧道洞内设置了地温及气温观测断面。根据实测资料,初步分析了昆仑山隧道洞内气温、地温及隔热层内外侧温度分布特征,得出的结论对多年冻土区隧道工程建设及冻害防治有一定的指导意义。
Several sections were set up to observe the air temperature and ground temperature in Kunlunshan tunnel. Based on the observed data, the distribution characters of the air temperature, ground temperature, and temperature on two sides of an insulation layer in this tunnel, were analyzed. It is found that (1) air temperature on the top is higher than that on the bottom of the tunnel, and air temperature is lower at the end of tunnel than that in the center of the tunnel. The influence of air temperature outside tunnel gradually becomes weaker as the distance from entrance and exit increasing; (2) ground temperature linearly decreases with the depth along surrounding rocks increasing and it becomes negative at a certain depth; (3) the thawed areas appear in the rocks surrounding the tunnel after excavation and the thickness of thawed areas is mainly influenced by air temperature; and (4) the effect of thermal insulation of insulation layer is good for tunnel in cold regions.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2005年第6期1086-1089,共4页
Chinese Journal of Rock Mechanics and Engineering
关键词
隧道工程
昆仑山隧道
气温
地温
隔热层
Rocks
Temperature distribution
Thermal insulation
Tunneling (excavation)