渠道特性曲线与断面计算及渗漏分析

Canal Feature Curve and Section Calculation and Seepage Analysis

在调水、引水及供水工程中,各类引输水渠道通常多与隧洞、暗渠、明洞及渡槽等不同建筑物间断分布,构成引输水连接建筑物,通常可分为黄土、岩石及砂砾石与碎石土等不同渠基类型。通过实例对局部水头损失、不淤流速和渗漏损失进行计算分析,以及通过黄土及岩石典型渠基类型渠道实例水力学计算确定水力要素,绘制设计断面与相应水力参数特性曲线,确定水力最佳断面范围,选定设计实用经济断面,为引输水渠道工程设计提供借鉴和参考。

In water diversion and supply projects,the water transmission canals mostly are connected to tunnels,underground canals,open tunnels and aqueducts,etc which are discontinuously distributed and form the water transmission structure. The canals are classified in loess soil,rock and sandy gravel ＆ gravel soil,etc in type. Through analysis on local head loss,flow velocity without sediment and seepage loss as well as the hydraulic calculation and determination of the hydraulic factors of the canal practice in loess soil and rock,the design sections and corresponding hydraulic parameter curves are mapped respectively so that the optimum hydraulic section scope is determined,the practical and economic section is selected and designed. This provides the engineering design of water transmission canal with reference.