一、基本情况 1.特点磨刀门口门是一个强迳流弱潮河口,在珠江三角洲八大口门中,泄洪和输沙量比重最大,约占西江马口站的三分之一,是西江的主要排洪通道。口门的灯笼山站年平均潮差为0.86米,中水时期的山潮比值为2.1,1968年最大泄洪流量为13,880秒立米。 First, the basic situation 1. Features Sharpener door is a strong 迳 weak weak tidal estuary, the Pearl River Delta eight gates, the largest proportion of flood discharge and sediment transport, accounting for about one-third of the Xikang Meikou station is the Xijiang The main flood discharge channel. The annual average tidal range at the mouth of the Lantern Hill Station was 0.86 meters, and the ratio of the mountain tides in the mid-water period was 2.1. The maximum flood discharge in 1968 was 13,880 seconds.