摘要
针对寒冷地区大型渠道冻害防治问题,在哈达山水利枢纽工程输水干渠段开展保温防冻护坡原型试验,对不同保温板厚度下基土冻胀特征与保温防冻机理及保温零热阻进行研究。研究表明,保温护坡可以有效消减基土冻胀量;零热阻计算公式中保温板零热阻可取0.0016。成果对于大型渠道设计、运行管理,以及对冰冻学科技术的发展均具有重要意义。
Heat preservation anti-freezing slope protection prototype experiment is carried out in water conveyance trunk section of Hadashan Water Conservancy Project aiming at large channel anti-freezing problem in cold regions. The foundation soil frost heave characteristics, heat insulation anti-freezing mechanism and heat insulation zero thermal resistance under different heat insulation board thicknesses are studied. The research shows that the heat insulation slope protection can effectively eliminate the foundation soil frost heave. The heat insulation hoard zero thermal resistance can be 0.0016. The results are of great significance for large-scale channel design, operation management, and development of cryoscience technology.
出处
《水利建设与管理》
2017年第8期34-37,共4页
Water Conservancy Construction and Management
关键词
大型渠道
高寒地区
冻胀
研究
large channels
alpine region
frost heave
research
