| With the rapid development of national economy and society,the construction projects across,across and along the river in the scope of river management are increasing year by year.While giving full play to their own functions,the construction projects may also bring certain negative effects on river regime stability,flood discharge safety,daily maintenance and management,flood control and rescue.To analyze project construction of river water level,river regime and the surrounding the impact of water conservancy facilities,based on The Huangpu river channel management within the scope of a reinforced concrete fixed terminal engineering as an example,adopt the method of mesh nodes for interpolation The Huangpu river bed flat 2 d rendering,according to the distribution of river bed elevation,situation analysis and research on The Huangpu river regime evolution;The variation of backwater and tidal level of The Huangpu River are studied by using two-dimensional hydrodynamic model.The stability of flood control wall was studied by finite element analysis.The research results can provide technical support for flood control safety of wharf engineering.The main research results are as follows:（1）Using the latest measured underwater topography data of The Huangpu River,the two-dimensional effect map of the riverbed plane of The Huangpu River is made by using the method of grid node interpolation,which intuitively shows the distribution situation of the underwater topography of The Huangpu River;The river regime change of The Huangpu River is discussed and studied by sorting out the data of river related projects and flood control projects in the study area（2）Based on the existing hydrology and geology data of the Huangpu River,the two-dimensional hydrodynamic mathematical model of the Huangpu River plane was established by using the hydrodynamic module Mike21.The model parameters were calibrated in combination with the two tidal conditions of the normal hydrological year and typhoon Fitter hydrological year,and the two-dimensional hydrodynamic model of The Huangpu River plane was obtained.It provides basic data model of tide level and flow field for engineering construction along The Huangpu River.Based on the engineering practice,the backwater produced by wharf engineering is simulated by using two-dimensional hydrodynamic mathematical model,which is proved to be practical and reliable.（3）Based on The Huangpu river before and after the two-dimensional hydrodynamic model of wharf engineering construction of The Huangpu river,to simulate the water level change study,wharf engineering construction often water level before and after years,"Mr"typhoon conditions the highest water level changes affect only for wharf area 80 m,upstream and downstream change in no more than 0.04 m,wharf engineering construction,can not influence the flow state in The Huangpu river mainstream,It has little influence on flood discharge of The Huangpu River.（4）Seepage stability of flood control wall is analyzed and studied by using seepage diameter coefficient method and finite element analysis method;The whole stability of flood control wall slope is simulated by Using Lizheng finite element software and Autobank finite element software based on the circular slide method.The pile foundation safety of flood prevention wall in the research area is studied by using m method.The results show that the seepage of flood control wall,the overall stability of slope and the stability of pile foundation in the study area all meet the requirements,and there is no hidden danger of flood control. |
PDF Full Text Request