一、前言关于侧槽式溢洪道的水力计算,我们曾针对如何确定水流控制点和判定流态的问题进行了研讨。在本文中,我们则将对水力计算中的另一个问题即侧槽中的水面线计算问题进行一些分析和研究。侧槽中的水流属于恒定(或称稳定)变量流(Steady Spatially Varied Flow)。变量流的水面线计算通常多采用数值积分法(或称有限差分法)。就我们所知,目前在工程设计中,特别在中小型水库侧槽式溢洪道的设计中,在这方面还存在一些问题。我们研阅了国内外某些文献资料,进行了必要的计算和分析,认为侧槽水面线宜采用一种比 I. INTRODUCTION With regard to the hydraulic calculation of the side channel spillway, we conducted a discussion on how to determine the flow control point and determine the flow regime. In this paper, we will analyze and study another problem in hydraulic calculation, namely, the calculation of water line in side channels. The water flow in the side channels belongs to the Steady Spatially Varied Flow. Variable stream water surface line usually use numerical integration method (or finite difference method). As far as we know, there are still some problems in engineering design, especially in the design of side channel spillways for small and medium-sized reservoirs. We have studied some documents at home and abroad, carried out the necessary calculations and analysis, that the side surface of the water line should adopt a ratio