三盛公枢纽工程系低水头大型平原水闸,设计灌溉面积1520万么,于1961年建成。由于地基透水性很不均匀,为防止排水失效,设计时在块石砼海漫上布设了两排共52个1米×1米的大排水井,以利检修(见附图)。1963年潜 Sam Shing Gong Public Works Department of low-head large plains sluice, designed Irrigation area of ​​15,200,000 what, built in 1961. As the foundation permeability is very uneven, in order to prevent the drainage failure, the design was arranged in a row of blocks of stone concrete sea two rows of a total of 52 1 m × 1 m large drainage wells for easy maintenance (see photo). 1963 potential