向家坝灌区北总干渠一期灌溉水增温措施研究  

Study on water temperature increase measures in first phase of north main canal of Xiangjiaba irrigation area

作　　者：李健威 庄春义[1] 赵高磊 梁瑞峰[2] LI Jianwei;ZHUANG Chunyi;ZHAO Gaolei;LIANG Ruifeng(Sichuan Water Resources and Hydroelectric Investigation&Design Institute,Chengdu 610072,China;State Key Laboratory of Hydraulics and Mountain River Engineering,Sichuan University,Chengdu 610065,China)

机构地区：[1]四川省水利水电勘测设计研究院,四川成都610072 [2]四川大学水力学与山区河流开发保护国家重点实验室,四川成都610065

出　　处：《人民长江》2021年第10期141-145,共5页Yangtze River

基　　金：云南省重点研发计划项目(2019BC002)。

摘　　要：西南地区大多采用渠道从水库引水进行农业灌溉,水库水温分层使引于水库的水温低于天然水温,低温水会对农作物的生长发育造成不利影响,因此需要采取措施提高灌溉水温。以向家坝灌区北总干渠一期灌溉水温为研究对象,对比分析了晒水池和叠梁门2种增温方式的可行性。研究表明:向家坝灌区低温水发生时间主要在4~6月,部分渠道最大降温达3.10℃。晒水池增温后各斗渠渠首水温为16.70~17.50℃,与采取叠梁门措施增温后16.60~17.50℃的水温基本一致。晒水池与叠梁门分层取水的增温效果基本相同,但晒水池建设总静态投资为5823.00万元小于叠梁门改造工程静态总投资的21051.38万元,晒水池方案更经济。同时利用灌区内已建塘坝对渠道低温水进行晒水增温,最大增温幅度为1.47℃,可以大大缓解低温水问题。In the southwest China,most of the water is transferred from the reservoir through canals for agricultural irrigation.The water temperature in reservoirs is stratified,making the water temperature in the reservoir lower than the natural water temperature.Low temperature water will have adverse effects on the growth and development of crops,so measures should be taken to improve the irrigation water temperature.The water temperature in the first phase of the main canal of Xiangjiaba irrigation area was studied,the feasibility of two measures,sunning water pool and stoplog gate,were also analyzed.It is shown that the time of low temperature water in Xiangjiaba irrigation area is mainly from April to June,and the maximum temperature drop is 3.10℃.The water temperature at the head of the lateral canal is 16.70~17.50℃after heated in the sunning water pool,which is basically consistent with the temperature of 16.6~17.5℃through stoplog gate.The heating effect of sunning water pool is basically the same as the stoplog gate,but the total static investment of sunning water pool is 58.23 million CNY and that of stoplog gate is 210.51338 million CNY,so the sunning water pool is more economic.The established Tangba in the irrigated area was used to increase the temperature of the channel′s low-temperature water with the maximum increase of 1.47℃,which could greatly alleviate the problem of low-temperature water.

关 键 词：灌溉水温 灌溉水增温 低温水 晒水池 叠梁门 向家坝灌区 

分 类 号：S161.9[农业科学—农业气象学]