大型输水渠道系统建筑物水头损失处理方法研究  

Processing Method of the Head Loss of Structures in Large-Scale Water Delivery Channel System

作　　者：丁志良[1] 王长德[1] 谈广鸣[1] 管光华[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,武汉430072

出　　处：《南水北调与水利科技》2008年第5期18-23,共6页South-to-North Water Transfers and Water Science & Technology

基　　金："十一五"国家科技支撑计划项目:中线工程输水能力与冰害防治技术研究(2006BAB04A12)

摘　　要：大型输水渠道系统往往穿越大量过水建筑物,如何合理的确定这些建筑物的水头损失是渠道运行调度仿真计算中的一个关键问题。对各类建筑物按照水头损失的计算方法进行了分类,采用概化断面的方法,对渠道渐变段、倒虹吸管身段推导出了便于实际仿真计算的总水头损失计算公式,并给出了各公式系数的计算方法;对其它建筑物也给出了有效的处理措施,并给出了计算节制闸设计局部水头损失的方法。实例计算表明,本文提出的建筑物水头损失处理方法简洁高效,能够提高渠道运行调度仿真计算的效率和精度。The large-scale water delivery channel usually passes through a mass of transferring structures, how to reasonably determine the head loss of these structures is a key question in the simulation of channel operation dispatching. All structures are classified by the computational methods of the loss of head. The generalized cross section method is applied, and the computational formulas of the total head loss which are convenient for actual simulating computation were deduced for the channel transition sections and the pipeline reaches of siphon, also the computational method of coefficient is given for each formula. The effective processing measures are also proposed for other structures. Moreover, the method is given to calculate the designed local loss of head of the check gate. The computation of example indicates that the processing methods of structures are succinct and efficient, and the efficiency and precision of simulation of channel operation dispatching can be improved.

关 键 词：大型输水渠道 建筑物 水头损失 运行调度 仿真 

分 类 号：TV135[水利工程—水力学及河流动力学] TV68