A two-dimensional flow numerical model of the tidal reaches, which total length is more than 700 km, is established from Datong to the Yangtze River estuary. The tidal levels, velocities, diversion ratios and dynamic ...A two-dimensional flow numerical model of the tidal reaches, which total length is more than 700 km, is established from Datong to the Yangtze River estuary. The tidal levels, velocities, diversion ratios and dynamic axes before and after the separate regulation of each reach and combined regulation of all reaches are obtained. The comparative analysis shows that the regulation project of a separate reach basically has no impact on velocity distributions and variations of diversion ratios of upper and lower reaches, the variations of dynamic axes are only within the local scope of the project. The regulation project of a separate reach also has less impact on the water level in the lower adjacent reaches, but will make the water levels in the upper reaches rise. After the implementation of the regulation projects for all reaches, the rise of water level in the upstream reaches will have a cumulative impact.展开更多
Engineering risk research is based on scientific prediction, evaluation and analysis and the formulation of risk prevention measures and emergency plans, in order to effectively avoid, prevent and control the risk fac...Engineering risk research is based on scientific prediction, evaluation and analysis and the formulation of risk prevention measures and emergency plans, in order to effectively avoid, prevent and control the risk factors that may occur in the construction process of waterway regulation project. Port channel dredging project is the main measure of infrastructure construction and daily maintenance in coastal areas. Starting from the common structure of waterway regulation project, this paper analyzes the impact of construction on the environment, how to do a good job in ecological environmental protection and build a new green ecological waterway, from the system exploration, design scheme optimization, on-site construction measures and other aspects and puts forward measures.展开更多
The article adopts the quarterly data of the monetary and macroeconomics variables from 1978～1999, applies the asymmetrical information game analysis, the regression and cointegration error-correction model, to inves...The article adopts the quarterly data of the monetary and macroeconomics variables from 1978～1999, applies the asymmetrical information game analysis, the regression and cointegration error-correction model, to investigate on the decision-making mechanism of money supply and money regulation project. It suggests the regulation process which central bank controls with instruments of the monetary policy and the mode detail of its operation.展开更多
基金financially supported by the Major Project"Golden Waterway Capacity Enhancement Technology"of Ministry of Transport of China(Grant No.201132874640)
文摘A two-dimensional flow numerical model of the tidal reaches, which total length is more than 700 km, is established from Datong to the Yangtze River estuary. The tidal levels, velocities, diversion ratios and dynamic axes before and after the separate regulation of each reach and combined regulation of all reaches are obtained. The comparative analysis shows that the regulation project of a separate reach basically has no impact on velocity distributions and variations of diversion ratios of upper and lower reaches, the variations of dynamic axes are only within the local scope of the project. The regulation project of a separate reach also has less impact on the water level in the lower adjacent reaches, but will make the water levels in the upper reaches rise. After the implementation of the regulation projects for all reaches, the rise of water level in the upstream reaches will have a cumulative impact.
文摘Engineering risk research is based on scientific prediction, evaluation and analysis and the formulation of risk prevention measures and emergency plans, in order to effectively avoid, prevent and control the risk factors that may occur in the construction process of waterway regulation project. Port channel dredging project is the main measure of infrastructure construction and daily maintenance in coastal areas. Starting from the common structure of waterway regulation project, this paper analyzes the impact of construction on the environment, how to do a good job in ecological environmental protection and build a new green ecological waterway, from the system exploration, design scheme optimization, on-site construction measures and other aspects and puts forward measures.
基金This work is supported by National Natural Science Foundation of China (No.70 12 10 0 1)
文摘The article adopts the quarterly data of the monetary and macroeconomics variables from 1978～1999, applies the asymmetrical information game analysis, the regression and cointegration error-correction model, to investigate on the decision-making mechanism of money supply and money regulation project. It suggests the regulation process which central bank controls with instruments of the monetary policy and the mode detail of its operation.
