查勘汉江中下游重点河段调查水文泥沙、河势调整、航道变化１９９７年４月３～１２日，承担“九五”三峡工程坝下游冲刷对河势及防洪影响专题研究的长江科学院等单位的专家和代表对汉江中下游（丹江口水利枢纽至武汉）进行实地查勘。查勘过程中沿途对重点河段、护岸险工和... Investigation of key river sections in the middle and lower reaches of the Hanjiang River Basin for hydrological and sediment investigations, river regime adjustments and changes in waterways On April 3 to April 12, 1997, the Yangtze River Academy of Sciences and other units that undertook the special study on the impact of the scouring of the Three Gorges Dam downstream of the Ninth Five- Experts and representatives conducted a field survey on the middle and lower reaches of the Han River (Danjiangkou Water Control Project to Wuhan). During the course of the survey on the key sections, revetment workers and ...