疏干孔在季节冻土区路基冻害整治中的作用效应  

Action Effect of Unwatering Hole in Treatment of Subgrade Frost Damage in Seasonal Frozen Region

作　　者：赵成江 

机构地区：[1]中铁西北科学研究院有限公司,兰州730000

出　　处：《路基工程》2012年第2期171-173,共3页Subgrade Engineering

基　　金：铁道部科技研究开发计划(2008G014)

摘　　要：路基季节性冻害是目前路基存在的常见病。介绍了疏干孔在路基冻害整治工程设计中布设原则,并通过分析疏干孔周围路基土体温度场、水分场的变化特点,揭示了疏干孔在路基土体中起到的疏干、排水、蒸发、风干的作用。The seasonal frost damage of subgrade is common at present. The paper introduces the arrangement principle of unwatering hole in the treatment design thereof; and through analyzing the change characteristics of temperature and moisture fields at the soil mass of subgrade around unwatering holes, the actions of unwatering, drainage, evaporation and air drying of such holes are revealed.

关 键 词：季节冻土 路基冻害 疏干孔 作用效应 

分 类 号：U216.419.2[交通运输工程—道路与铁道工程]