摘要
为减轻北方冻胀区渠道衬砌的冻胀破坏,于2010年和2011年2个冬季,对辽宁省东港灌区进行了铺设苯板保温与对比段的渠道衬砌冻胀破坏观测试验,获得了渠道横断面不同部位冻胀量和渠基土地温变化的原位数据。经过对比分析,得到采用不同苯板保温厚度与渠道冻胀量及地温之间的变化关系,阐明了苯板结构在渠基土保温和削减冻胀量方面所具有的优越性。试验结果对类似地区新型渠道结构形式的设计和苯板保温技术的推广具有参考意义。
In order to mitigate the frost heaving damage of lining canals in cold regions, in winter seasons of 2010 and 2011, frost heaving damage observation tests aiming at the canal section insulated with polystyrene board and the comparative section were conducted in Donggang Irrigation Area, and the frost heaving values and foundation soil temperature at different positions of canal sections were measured. By comparative analysis, we obtained relations of insulation board thickness with the frost heaving values and soil temperature. The test demonstrates superiority of insulation board in temperature insulation of foundation soil and reduction of frost heaving. The test results have significant meanings to design and promotion of polystyrene insulation board tech- nology in lining canal engineering in cold regions.
出处
《人民长江》
北大核心
2013年第4期52-55,共4页
Yangtze River
基金
水利部公益性行业科研专项(201001077)
关键词
苯板保温
冻胀
基土温度
渠道衬砌
polystyrene board insulation
frost and heaving
foundation soil temperature
lining of canal
