高寒区输水渠道渠基蓄热增温防冻胀技术原型试验  

Field Investigation of the Anti-Frost Heaving Technology by Heat Storage in Canal Foundation for Water Delivery Canals in Cold Regions

作　　者：江浩源 王正中[1,2,3] 孟晓栋 王羿 谭志翔 葛建锐 JIANG Haoyuan;WANG Zhengzhong;MENG Xiaodong;WANG Yi;TAN Zhixiang;GE Jianrui(Cold and Arid Regions Water Engineering Safety Research Center,Northwest A&F University,Yangling,Shaanxi 712100,China;Key Laboratory ofAgricultural Soil and Water Engineering in Arid and Semiarid Areas ofMinistry ofEducation,Northwest A&F University,Yangling,Shaanxi 712100,China;State Key Laboratory ofFrozen Soil Engineering,Northwest Institute ofEco-Environment and Resources,Chinese Academy ofSciences,Lanzhou,Gansu 730000,China;Geotechnical Engineering Department,Nanjing Hydraulic Research Institute,Nanjing,Jiangsu 210024,China)

机构地区：[1]西北农林科技大学旱区寒区水工程安全研究中心,陕西杨凌712100 [2]西北农林科技大学旱区农业水土工程教育部重点实验室,陕西杨凌712100 [3]中国科学院西北生态环境资源研究院冻土工程国家重点实验室,甘肃兰州730000 [4]南京水利科学研究院岩土工程研究所,江苏南京210024

出　　处：《水利与建筑工程学报》2022年第5期9-16,共8页Journal of Water Resources and Architectural Engineering

基　　金：国家自然科学基金项目(U2003108,51279168);国家重点研发计划“水资源高效开发利用”重点专项(2017YFC0405103);冻土工程国家重点实验室开放基金资助项目(SKLFSE201801)。

摘　　要：冬季输水渠道衬砌板在基土冻胀和冰压力双重作用下,在行水位及其上部易发生开裂、折断等破坏,目前还未有利用太阳能或风能等绿色能源进行渠基主动、低碳增温的防冻胀技术。为此,研发了由抛物面聚光槽、集热管、太阳追踪器、散热通道、碎石槽蓄热体与散热空气循环风机组成的渠基风光能蓄热增温系统,其散热通道采用紧贴渠坡衬砌布置和碎石槽底部布置两种形式。通过北疆某渠道工程的现场安装与温度监测,分析了该技术的增温效果与适用性。结果表明:渠基风光能蓄热增温系统可有效提升土温,削减冻深,具有良好的工程防冻胀应用效果,可为寒区渠道冬季输水以及渠道升级改造提供技术支撑。Under the coupling action of the soil frost heaving and ice pressure,the water conveyance canal lining is prone to cracking and breaking at the water level fluctuation areas and its upper part.At present,there is no anti-frost heave technology that uses green energy such as solar energy or wind energy which is active and low-carbon emission technologies to increase the temperature of the canal foundation.To this end,a canal foundation heating system with solar energy and wind energy,composed of parabolic condensing trough,heat collecting pipe,sun tracker,heat dissipation pipes,heat storage body with gravel trough and heat dissipation air circulation fan is developed.The heat dissipation pipes are arranged close to the canal slope lining and at the bottom of the gravel trough.Through the field instal-lation and temperature monitoring of a canal project in Northern Xinjiang,the temperature increasing effect and applicability of this technology are analyzed.The results show the canal foundation heating system with wind and solar energy can effectively increase the soil temperature and reduce the freezing depth.It has a good application for engineering anti-frost heaving,and can provide technical support for water delivery canals in winter in cold regions.

关 键 词：高寒区渠道 冬季输水 蓄热增温 风光能利用 防冻胀 原型试验 

分 类 号：TV698.26[水利工程—水利水电工程]