一、前言西江是我国华南之大川。水量充沛,河道稳定并具有一定的通航能力。随着国民经济的发展,目前的西江航道已不能满足航运事业发展之需要,为此,中央有关部门决定开发西江,以提高该河道的通航能力。要求西江桂平至梧洲段河道,经第一期工程后,能通航两艘千吨驳组成的顶推驳船队。通航尺度为:设计水位下航道水深2.3米航道底宽50米,航道弯曲半 I. Introduction Xijiang is a big river in South China. Water is abundant, the river is stable and has certain navigational capacity. With the development of the national economy, the current Xijiang Channel can no longer meet the needs of the development of the shipping industry. Therefore, the Central Government decided to develop the Xijiang River to improve the navigation capacity of the river. After the first phase of the project, the river course from Guiping to the Wuzhou section of the Xijiang River could be navigated to push the barge with two thousands of tons of barges. Navigation scale: water level at the design of the waterway 2.3 meters bottom width of 50 meters, waterway bending half