河道 river course; streamway; covalency; runway; cut; river channel◇河道变迁 channel change; migration of channel; 河道沉积 within-channel deposit; 河道冲刷 river channel erosion; 河道改直 rectification of river; 河道汇流 concentration of channel; 河道疏浚 training of channel; 河道网 river net; 河道污染 pollution of river; 河道淤积 river channel sedimentation; 河道整治 channel improvement
( 1 ) the principles and approaches are explored on the post - evaluation of water resources planning and projects . ( 2 ) the post - evaluation model of the adjusting and regulating planning of huai river middle courses for flood protection . based on the model , the economical evaluation and comprehensive evaluation are completed in the chapter 5 一是探讨水利规划、水利工程项目后评价的原理、方法;二是建立淮干河道整治规划后评价的模型,在此基础上,对淮干中游河道整治规划及工程项目进行了经济评价、综合评价。