一、问题的提出近年来,由于河道的疏浚和航行事业的迅速发展,航道护岸的问题逐渐引起了人们的重视,而以往所修建的护岸中出现的严重坍损和寿命不长的情况,又迫切地提出了如何改进护岸的设计和施工的问题。桐乡县解放后,特别是一九六四年之后,修筑了大批的砌石护岸。到一九八○年春止,先后建护岸133公里,结构型式基本上都是砌石斜坡式,其中已有23.5公里在运行中坍毁, First, the issue put forward In recent years, due to the rapid development of river dredging and navigation, waterway revetment gradually attracted the attention of people, and in the past built revetment serious slump and life expectancy is not long, and Efforts are urgently made to improve the design and construction of bank protection. After the liberation of Tongxiang County, especially after 1964, a large number of masonry revetments were built. By the spring of 1980, there have been 133 kilometers of revetments built, and the structural types are basically masonry slopes, of which 23.5 kilometers have been collapsed during operation.