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沉箱过去一直在木平台上预制,木平台宽12米、长16米,用木板铺面,下有纵横木楞,木楞下用90个混凝土墩支撑,木楞与混凝土墩之间垫有帆布砂袋。沉箱制好后,将砂放空,沉箱连同木平台一起落至横移车上,经横移至大平车,然后溜放下水。由于沉箱与木平台一起下水,所以沉箱浮起所需水深较大,故一般要趁高潮溜放。冬季潮水偏低,需等高潮,耽误时间。木平台使用中容易松散变形,要经常修理,沉箱起浮后将木平台拖上再横移至制作台,重新恢复要2～3天才能
Caissons in the past has been prefabricated wooden platform, wooden platform width of 12 meters, 16 meters long, with wooden pavement, under vertical and horizontal wood stoned, under the wood with 90 concrete pier support, wood and concrete between the pier pad sand canvas bag. After the caisson is made, the sand is emptied, and the caisson is dropped along with the wooden platform to the transverse car, transplanted to the large flat car, and then slipped into the water. As caissons and wooden platform with the water, caisson floating the larger water depth, it is generally to take advantage of the climax slippery. Low tide in winter, to wait for orgasm, delay time. Wood platform easy to use loose deformation, to be often repaired, after the caisson float wooden platform will be dragged and then moved to the production station, to resume to 2 to 3 days to