Preliminary study on navigation development and comprehensive improvement of North Cannel
Based on a deep investigation on the history and present status of Jinghang Grand Canal,the feasibility of the navigation and comprehensive improvement of the river reach of the North Canal between Beiguan Sluice in Tongzhou Distrct of Beijing and Qujiadian Barrage Project in Beichen District of Tianjin is studied;in which the main technical difficulties of the navigation of the canal is analyzed,and then the technical schemes for the navigation with two ship-locks and four ship-locks are compared in accordance with the waterway classifications of both V and VI.Furthermore,an extensive study is made from the aspects such as the comprehensive utilization of water resources,flood control project,waterway regulation,sluice and bridge reconstruction,layout of wharf and pier,construction of landscape,water quality restoration,etc.It is recommended that a comprehensive improvement must be made on the navigation development of the canal,i.e.besides the consideration on the technical requirement of the navigation,the water transport culture of the canal with a history of nearly a thousand years must be inherited and continued,while the eco-environment suitable for living must be constructed as well.