东港灌区苯板保温渠道衬砌抗冻胀试验研究  

Anti-frost Heaving Test for Lining Channel of Polystyrene Board Insulation in Donggang Irrigation District

作　　者：张欣[1] 宗兆博[1] 宋立元[1] 臧志刚[1] 富天生[1] 

机构地区：[1]辽宁省水利水电科学研究院建材岩土试验研究所,辽宁沈阳110003

出　　处：《中国农村水利水电》2013年第8期95-98,102,共5页China Rural Water and Hydropower

基　　金：水利部公益性行业科研专项(201001077)

摘　　要：冻胀量的大小直接关系着渠道衬砌工程的安全、稳定运行及输水效率。影响冻胀量大小的重要因素包括渠基土地温及冻深的变化情况。通过2010-2011年和2011-2012年2个冬季的试验观测,获得了有关东港灌区渠道衬砌地温、冻深及冻胀量变化情况的真实数据,并研究了采用不同厚度的苯板保温对渠道衬砌下渠基土的地温、冻深及冻胀量的影响规律,以此选取了适宜东港灌区的苯板保温厚度,为灌区渠道衬砌工程设计提供了参考依据。r：The security,stable operation and water efficiency of the channel lining are directly connected with the amount of frost heaving.The factors that affect the amount of frost heaving include the channel base land temperature and a change in frost depth.Through test observation during two winters from 2010to 2011and 2011to 2012in Donggang Irrigation District,the related amount of frost heaving,the change of frost depth and soil temperature in-situ data were available.Then research is done on the law of influence different thickness of polystyrene board insulation in the channel lining with the three changes above.On this basis,the thickness of polystyrene board insulation suitable for channel lining in Donggang Irrigation District is selected,which serves as an evidence for the design of channel lining in similar irrigation projects.

关 键 词：冻胀量 地温 冻深 苯板保温 

分 类 号：TV91[水利工程—水利水电工程]