根据前人对急流渠道中陡冲击波的研究理论成果,分析了对称直线收缩渠道的水力特性,讨论了渠道直线收缩衔接段的设计方法。在已知来流条件和边墙收缩角的情况下,利用刘韩生简化陡冲击波理论给出了收缩渠道长度的简洁明了的计算过程;在经验建议使用的边墙偏转角范围内,利用Ippen冲击波理论和刘韩生简化冲击波理论分别对收缩渠道长度进行计算,数据和曲线图表明两理论计算结果基本一致,误差在1.010 5%内。因此,该计算方法值得推荐。 According to the predecessors’ research results on the steep shock wave in the rapids, the hydraulic characteristics of the symmetrical rectilinear contraction channels are analyzed, and the design method for the rectilinear convergence of the channels is discussed. Based on the known flow conditions and the shrinkage angle of the side wall, a simplified calculation of the shrinkage channel length is given by using the simplified steep shock wave theory of Liu Han-sheng. Based on the empirical wall deflection angle, Ippen shock wave theory And Liu Hansheng’s simplified shock wave theory, respectively, to calculate the length of the shrinkage channel. The data and the graph show that the calculated results of the two theories are basically the same with an error of 1.010 5%. Therefore, this calculation method is recommended.