一、发展过程的三个阶段我区在水工建筑物中采用装配式預制构件的施工方法,已有9年的时間。其发展过程大体上可分这样三个阶段:第一段是从1956至1959年,为試驗阶段。1956年首先在吳川县鑑西工程成功地吊装了重达7吨的板鋪渡槽后,继而在該工程的大岸水閘完成了装配式部分結构。1958年大跃 First, the three stages of the development process My district in the hydraulic structures using prefabricated prefabricated construction methods, has been 9 years. Its development process can be roughly divided into three stages: The first section is from 1956 to 1959, for the pilot phase. In 1956, after successfully lifting a 7-ton slab aqueduct in Xianghuang West Project of Wuchuan County, it completed the prefabricated partial structure at the sluice of the project. 1958 Great Leap Forward