摘要
介绍了南水北调中线工程冰期输水采用数学模型计算取得的初步成果。其参数以与南水北调中线工程条件类似的渠道或河道冰水力学的原型观测及资料分析确定。计算结果表明:南水北调中线工程在鹤壁以北具有水内冰的生成条件,愈向北水内冰含冰量愈大;在计算条件下不致影响冰期输水量;由于总干渠冰期流速较大,不可能结成冰盖;建筑物及边坡冻胀问题应予以重视。
The problems of water transfer in ice period for the Middle Line of Water Transfer Project from Southto Noth China are briefly presented. The preliminary results were obtaind by a mathematic model, in which hydraulic parameters were determined using the data obtained from similar channels with the Water Transfer Project from South to Noth or from prototype observation information of river ice?hydraulics. The calculation results showed that there exists the conditions for ice formation in water at north of Hebi where the Water Transfer Project from South to North will pass through, and the more north of Hebi, the more ice?content in water; the water delivery demand will be not affected in ice period under the calculation conditions; ice cover would be not formed due to relatively high velocities in channel; but much attention should be paid to frozen heave problems on structures and channel slopes.
出处
《长江科学院院报》
CSCD
北大核心
2002年第B09期29-31,35,共4页
Journal of Changjiang River Scientific Research Institute
关键词
南水北调中线工程
冰期输水
原型观测
数模计算
the Middle Line of Water Transfer Project from South to North China
water transfer in ice period
prototype observation
mathematic model calculation
