凤凰颈闸位于长江无为大堤凤凰颈镇附近,为一双孔防洪、排涝控制闸.该闸系1953年由长江下游工程局设计和施工.因防洪标准偏低和抗滑稳定不够,1980年在安徽省水利厅设计院的指导和帮助下,我局拟订了加固设计方案,并于1981年冬至1982年春进行了施工.初步总结如下. Fenghuang neck lock is located in the vicinity of Fenghuang neck town of Inaction Great Dyke in the Yangtze River and is a double-hole flood control and drainage control gate, which was designed and constructed by the Engineering Bureau of Yangtze River in 1953. Due to low flood control standards and insufficient stability of anti-slip, Under the guidance and assistance of the Provincial Institute of Water Resources and Design, the Bureau has formulated a plan for reinforcement design and construction was carried out in the winter of 1981 to the spring of 1982. The preliminary conclusions are as follows.