Geotextile In The Yangtze Estuary Deepwater Channel Regulation Project In Research And Design,

The Yangtze Estuary Deepwater Channel Regulation Project is characterized as its large scale, high difficulty and poor construction condition. With the lack of stone stock and the mobility of bed material in the Yangtze Estuary, sand was utilized to take the place of stone as building structure material and new bed protection structure was applied to control the bed erosion adjacent to the regulating buildings.Based on the study on the application of geotextiles both at home and abroad, its application was put forward herein as the main material in the fibre textile mattress structure and sand-bagged core dike structure. Moreover a large number of its practical application tests were made both indoor and outdoor on account of the unique condition and demand of construction in Yangtze Estuary. The experience in the application of the geotextiles with the regard of soil-maintaining ability, stress mechanism, construction feasibility, etc., was accumulated. With checking computations of the whole stability and the sink of building profiles, the specific designed profile structure size was ascertained and furtherly the organizing and planning for construction were carried out.During the construction, surveys on the water depth at the fixed cross-sections and the sink of leading jetties were carried out. The survey data verified the validity and reliability of new geotextiles structure.Based on the analysis study, the engineering design, the construction technics and the construction monitoring of North Leading Jetty in the first stage of the Yangtze Estuary Deepwater Channel Regulation Project, the application of geotextiles the present paper systematically analysed and summarized.