The Sedimentation And Regulation Of The Chong Qing Reach Of The Three Gorges Reservoir Under The Condition Of New Seiries Of Water And Sediment

Three Gorges Project development and management of the Yangtze River are the key projects, with flood control, power generation, shipping, etc. General immense benefits. Prior to that carried out the engineering feasibility of the comprehensive and in-depth feasibility studies, feasibility studies at the feasibility of a direct impact on a key issue are changes in sediment deposition in fluctuating backwater area, The impact of whose over reservoir alteration damming area channel and harbour district is a maximal variable, it has been subjected to the relevant departments and the community's concern. For this reason, fluctuating backwater area of sedimentation carried out many tests and one model, two-dimensional mathematical model for calculating the job.After Three Gorges Reservoir stores water regularly according to 175 m schemes, the Chongqing host urban area channel segment happens to be in fluctuating backwater area, Southwestern region of Chongqing is the largest land and water transportation hub, the Yangtze River upper reaches of the center of economic development, shipping status is very important.the harbour district silt problem therefore is to be in progress around Chongqing channel segment. Reservoirs have been built in accordance with the operation of practice and scientific research units to carry out several sections of Chongqing sediment model test results indicate. Three Gorges Project as the growth of running time, sedimentation of the river in Chongqing will become the cumulative increase in sedimentation to the river will be the ports, waterways and municipal infrastructure construction along the river to a certain degree of negative impact. With the Three Gorges Project construction in 2009 the overall finish, the Three Gorges Reservoir of normal water level is approaching, putting into effect that Chongqing city shipping , flood control, shoreline planning and construction of municipal facilities along the river, as well as the upper reaches of the recent observation of changes in water and sediment on the river sedimentation in Chongqing will have a new impact. Combined with the subject of National Eleventh Five-Year Technology Project of the Three Gorges Project and its impact on reservoir sedimentation and Countermeasures", and further changes in the Three Gorges Reservoir area in Chongqing backwater river siltation problem and to study channel regulation. This article focuses on the use of the Three Gorges Project since 2003, water erosion and deposition of sediment in the reservoir area of the prototype observation data, Further and more complete entity and mathematical models of the verification, quantitative prediction models improve accuracy, Thus the quantitative prediction of the Three Gorges reservoir deposition process, the quantity and regularity, Analysis of sediment and scour Change fluctuating backwater area of the reservoir flood control, shipping and hub operation possible impact study measures accordingly, This will give full play to the comprehensive benefits of the Three Gorges Project is an important practical significance, for the mathematical model and physical model simulation technology is also of great significance to improve.