Moreover,the spatial and temporal development of the Beijing north-south axis line is visually represented and analyzed from ancient times,modern times and the .

Design for Water Contract of "Water Bank" in the Middle Route of South-to-North Water Transfer Project;

Aimed to study on whether constant water levels immediate at the upstream of control gates can be maintained in the Middle Route of South-to-North Water Transfer Project,the different unsteady flow transitional processes are simulated when inflow at the head,openings of control gates and the flow rates divided by outlets are changed simultaneously.

Based on the middle route of South-to-North Water Transfer Project,the sensitivity analysis to the characteristic parameters that reflect the variations in diversion discharge is done and then the effect of these parameters on hydraulic response of channel is researched by mathematical model.

The Middle Route Project(MRP)of the Southto-North Water Transfer Project is a large trans-basin and trans-province project,while water supply control of the middle route is a very complicated theoretical and practical problem which concerns with many elements like engineering technology,market operation and management mechanism.

The paper presents the real-time water supply theory and integrated frame of MRP(Middle Route Project),including water structure and its definition.