南四湖滨湖洼地机电排灌工程山东省环南四湖周围地面高程37.0米以下的滨湖洼地,总面积2171平方公里,有耕地235万亩,人口200万人。由于地势低洼,排水受湖水顶托,水不能自排人湖,雨季常积涝成灾,是历史上著名洪涝灾区。为改造滨湖洼地,济宁地区于1958年发动群众大造龙骨水车,改旱田为水田,车水种稻30万亩。但当时南四湖无闸坝控制,水稻高峰用水期基本无水可引,靠龙骨水车也不可能长距离大量 Nansihu Lake Lake Electromechanical Drainage and Irrigation Engineering The ground elevation around 37.0 meters above the ground around the four lakes in the south of Shandong Province has a total area of ​​2,171 square kilometers, with 2.35 million mu of cultivated land and a population of 2 million people. Because of the low-lying terrain, drainage is dominated by the lake, water cannot drain from the lake, and the rainy season is often a disaster. It is a famous flood disaster area in history. In order to transform the lakeside depression, the Jining region launched a large-scale keel water truck in 1958. It changed the dry land to a paddy field, and the vehicle water was used to grow 300,000 mu of rice. However, at the time, Nansi Lake had no gate dam control, and the peak water use period for rice was basically water-free, and it was impossible to rely on keel waterwheels for long distances.