1 埙口老闸的现状东台里下河地区圩口闸的兴建,起步于60年代,至1994年底,总数已达894座。其中60～70年代兴建529座,占总数的59.2%,80年代至今兴建365座。据调查,目前急需改造的圩口闸358座,占总数的40%。绝大多数老闸的设计水位差在1.0m 左右,门顶高程在+3.8m 以下(废黄河口基面),防渗长度不足5.0m。1991年洪灾后,市水利部门 The status quo of the old mouth of the mouth of the mouth Dongkou Lixiahe Wei mouth gate construction, started in the 60’s, to the end of 1994, the total has reached 894 seats. Among them, 529 were built in 60-70s, accounting for 59.2% of the total, and 365 were built since the 1980s. According to the survey, there are currently 358 Wei gates that are in urgent need of reconstruction, accounting for 40% of the total. Most of the old gate of the design water level difference of about 1.0m, the door elevation of + 3.8m below (base of waste Yellow River Estuary), impermeable length of less than 5.0m. After the flood in 1991, the municipal water conservancy department