梯形渠道的水力最优断面因为具有在过水断面面积一定时通过的流量最大的特点，是水利工程中一种常见的渠槽形式，它的断面设计需求解一个很复杂的高次方程。
Trapezoid channel is a common form in hydrological project with characteristic of maximum influx at a certain time, its section designing requires a complex equation of higher degree.
计算了典型支渠所属斗﹑农渠设计流量，阐述了灌溉渠道断面的设计思路。
This paper calculates the design flow of the sublateral canals of the typical branch canal, and expounds the design thought of the cross-section of the irrigation canal.
以闸前常水位运行渠道为例，设计了水位-流量串级控制器，对其传递函数进行了分析，给出了串级反馈控制器的设计准则。
To ensure the safety of the dam, countermeasures including low water-level operation of the dam and sluicing-siltationmethod with coal ash in front of the dam were presented.
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