长江中游太平口水道维护性疏浚技术

太平口水道是长江中游重点碍航水道,目前主要通过维护性疏浚维持航道畅通。以2018年碍航较为严重时为背景,分析河道特点和碍航原因,提出相应的疏浚方案。结果表明,考虑到多方面的碍航原因,本阶段宜采用桥梁防撞与航道管疏、提前预测与多轮抢通、双槽交替疏浚与通航相结合的思路,对沿岸槽和2#槽交替进行疏浚。2018年度的碍航形势严峻,疏浚时机的选择宜结合水情,分别在汛前、汛期和枯水期进行多轮疏浚。

Maintenance dredging technology of Taipingkou waterway in middle Yangtze River

Taipingkou waterway is a key obstructed channel in the middle reaches of the Yangtze River.Maintenance dredging technology is used as the main way to ensure the waterway unobstructed at present.Based on that the obstructed navigation of Taipingkou waterway is serious in 2018,we analyze the characteristics of waterway and reason of obstructed navigation,and put forward the dredging scheme.The results show that according to various reasons of obstructed navigation,the dredging thinking should be used at current period,which is combined with bridge collision avoidance,waterway management and dredging,prediction in advance and multi-round rush dredging,alternating dredging and navigation with double channels,and dredging riverbank channel and 2# channel.Considering the serious obstructed navigation situation in 2018,the selection of dredging time should be combined with water regime,and it should carry on multiple dredging respectively in pre-flood season,flood season and dry season.