STUDY ON CHANNEL CHANGES AND REGULATION COUNTERMEASURES IN A SHOALY SAND-COBBLE BED REACH BELOW THE THREE GORGES PROJECT

摘要

The operation of the Three Gorges Project has caused general bed degradation and morphological adjustment of the downstream channel. This paper analyses the channel change patterns and navigation conditions in a sand-cobble bed reach below the Three Gorges Dam. The potential channel changes of the reach are predicted and key technologies for physical model tests studied. Channel regulation countermeasures are proposed to solve the navigation problems of the reach.