摘要
Abstract
Lixiahe River area is one of the major grain producing areas in China,and also the plain depression with the largest area and the lowest terrain in Jiangsu Province.It is difficult to discharge waterlogged water in the Lixiahe depression,and the flood control policy of"pumping from the upper part of Lixia River catchment,retention in the middle part and drainage from the lower part"is clearly stated in the previous polder management plans.As an important part of the flood control and drainage system of Lixia River,waterlogging polder is crucial to waterlogging management.In 1991 the scope of waterlogging polder in the hinterland of Lixia River area was clearly defined for the first time.Over more than 30 years,with the economic and social development,the local labor force and river situation have changed greatly,such as intensive development and increasing residents in the polder area,low standard dikes,insufficient water regulating facilities,and obstruction of river flow,etc..In case of implementation of waterlogging retention,a lot of people should be evacuated,facing high safety risks,great economic losses,and unsatisfied effect of waterlogging retention.Therefore,it is necessary to adjust the scope of polder area and control waterlogging in Lixia River area.关键词
里下河/滞涝圩/治理/可行性Key words
Lixia River/waterlogging polder/regulation/feasibility分类
通用工业技术
