DROUGHT-WATERLOGGING ENCOUNTER PROBABILITY RESEARCH BETWEEN THE WATER SOURCE AREA AND WATER RECEIVING AREAS IN THE MIDDLE ROUTE OF SOUTH-TO-NORTH WATER TRANSFER PROJECT
The drought-waterlogging encounter probability of water source area and receiving area in the Middle Route of South-to-North Water Transfer Project is the important basis of water resources adjustment and co-operation. The set pair analysis was applied to research the drought-waterlogging encounter probability of water source area and Hai river receiving area based on the drought-waterlogging grade data from 1470 to 1979 and measured precipitation data from 1980 to 2000. The results showed that the drought-waterlogging disaster occured frequently, the continuous hazards were serious, and it had an increasing tendency of the drought-waterlogging disaster frequency and degree in recent three centuries. For the drought-waterlogging state between water source area and Hai river receiving area, the connection degree was very low and the synchronization was also relatively poor, the profitable frequency of the drought-waterlogging encounter for water transfer was 56.7%,and the disadvantageous frequency was 24.88%. In order to enhance the effectiveness and reliability of the Middle Route of South-to-North Water Transfer Project,we should enhance the ability of water resources adjustment and co-operation with other water resources projects to ensure the water security of receiving areas.
the South-to-North Water Transfer Projectmiddle routedrought-waterlogging encounter probabilitySet Pair Analysis
NETL
NSTL
万方数据
维普
