Water Simulation Researchon On The Main Canal Of Lu Bei In East Section Of South-to-North Project

South to North Water Diversion Project is a major strategic project in China, which has important significance for resolving the problem of water shortage in Shandong Peninsula and North China.. Because of the East Route of South to North Water Transfer Project flows through the Nansi Lake, Dongping Lake, It’s a long distance and it has many buildings in it.Water environment situation is more severe. It is the key to a successful diversion that whether the water quality could achieve the standards in the long-distance water scheduling of the South-to-North water diversion. Throughout the whole east of diversion channels,Shandong has the most quantity of the pollution sources, which manily focused on the Nansi Lake and the main canal of LuBei. The main canal of Jiaodong used a full interchange with reduced the pollution pathways greatly. However, the main canal of LuBei and the intersecting rivers are in a level-form so that the surrounded rivers and farmlands could sewage to the main canals. Therefore, the water safety of the the main canal of LuBei is the key to the water safety of the whole water diversion system. Based on the characteristics of the main canal of LuBei and the characteristics of contaminant transport, the numerical simulation model of the contaminant transport in the main canal of LuBei was established. In the solution process, we write the computer program of the hydrodynamic and water quality model in the main canal of LuBei and simulated the migration process of the water temperature, algae, BOD, organic phosphorus. In order to compare the impact of pollutants on water in winter and summer seasons, we further simulate the contaminant transport processes of water diversion in different seasons. In a typical case of sudden water pollution accident is simulated, and different regulatory schemes were simulated to compare the effects of the regulation.The main content are as follows:The establishment of a numerical simulation model of water pollution. Hydrodynamic simulation were one-dimensional steady flow model and an unsteady flow model. The former is used to simulate normal water period and the latter is used to simulate under emergency situations. The contaminant transport adopted the one-dimensional convection-diffusion equation.We write a simulation program according to the numerical simulation of water pollutionand the program includes a constant flow simulation, unsteady flow simulation, water pollution simulation, source assemble calculation, heat balance calculation module and so on.We established the water pollution simulation model of the main canal of LuBei according to the actual situation and the section hydraulic characteristics. We constructed the calculation methods of all the source assembles in water quality model and set the boundary conditions of the numerical simulation model of water pollution.By setting the factors of changes in water quality in the main canal of LuBei imports(on behalf of the Dongping Lake outlet water quality), we Simulated the change processesc of pollutants along the way and analyzed the impact of the Dongping Lake outlet water quality on the water quality if the main canal of LuBei. The pollutant index of simulation include the water temperature, DO, BOD, organic phosphorus, ammonia, algae ect.According to the water transportation in summer and the weather and temperature conditions in winter weather conditions, water conditions, we take the algae as a typical pollutants and simulated the pollutants along the way and the changes of cross-section in water transportation in winter and summer seasons.The simulation and prediction of typical sudden water pollution accident; Aiming at the varying severity of emergencies.