中文摘要：

为探明含浮帘群水流的阻力特性和各阻力参数计算方法,对不同间距、不同高度浮帘群在不同恒定均匀明渠流中的阻力特性开展了92组水槽试验。通过拟合水面线获得水力坡降,探讨浮帘拖曳力系数、曼宁糙率和达西韦斯巴赫阻力系数的变化规律。研究结果表明：浮帘群布置存在临界间距,此时浮帘间的相互干扰作用几乎消失;浮帘群消能增阻作用明显,其拖曳力系数在不同水流条件下变化较小,取值介于1.60-2.05之间;曼宁糙率主要与浮帘相对高度及浮帘分布密度有关,并获得了曼宁糙率的修正计算方法;达西韦斯巴赫阻力系数可由浮帘相对高度、浮帘分布密度及浮帘雷诺数组成的拟合公式获得。

英文摘要：

To explore resistance characteristics and calculation methods of resistance parameters in uniform steady open channel flow with a suspended flexible curtain group （SFCG）,92 sets of flume experiments were carried out with different curtain spacing,curtain heights,and flow conditions. The hydraulic gradients along the flume were obtained through curve fittings of water surfaces,and the drag coefficient Manning roughness and Darcy-Weisbach friction factor were studied. It is shown that the mutual interference among the SFCG would almost disappear under the critical curtain spacing. The SFCG significantly exhausts flow energy and increases resistance, and the drag coefficient hardly changes in different turbulent flow conditions with the range from 1. 60 to 2. 05. The Manning roughness is mainly related to the relative height and arrangement density of SFCG, and a modified calculation method for Manning roughness is proposed. In addition, the Darcy-Weisbach friction factor can be obtained from a fitting formula depending on relative height, distribution density of SFCG,and Reynolds number.