罗色姆堰是一种 V 型的、堰口具有半圆形断面的窄顶堰,是作明渠测流用的量水建筑物(见图1)。这是最近由荷兰介绍的一种量水建筑物。由图1可 Luo Semu Weir is a V-shaped, weir with a semicircular cross-section of the narrow weir, is used to measure the flow of open water Drainage water buildings (see Figure 1). This is a water-volume building recently introduced by the Netherlands. From Figure 1 can be