On Jul. 27, 2017, MWR Department of International Cooperation, Science and Technology (DICST) organized an acceptance meeting, assessing the MWR public-good research project “Effects of Estuarine Engineering on Mid-and-Long Term Evolution of Shoals and Channels in Yangtze River Estuary and Related Countermeasures (Project No.: 201201070)” in Beijing. The expert panel consisted of experts with MWR, Office of State Flood Control and Drought Relief Headquarters, China Institute of Water Resources and Hydropower Research, etc. Deputy Director JIN Xuhao with DICST and colleagues from NHRI Department of Research Management and project team attended the meeting.

The project summarized the historical evolution law in the Yangtze River estuary, systematically analyzed the recent evolution characteristics of the Yangtze River estuary under the condition of runoff and sediment changes in the watershed, revealed dynamic control factors of shoals and channels evolution, and illuminated the dominant effects of estuarine engineering on the evolution. The stability analysis indices of branching estuary were proposed based on historical good regime. The numerical simulation technology for mid-and-long term riverbed evolution of the Yangtze River estuary was optimized, and the effects of estuarine engineering on the mid-and-long term topographical evolution predicted. The governance idea of the South and North Channels bifurcation was raised based on the stability analysis, and the regulation effect of the Ruifeng Shoal in the South Channel predicted. Related research achievements had been applied in the regulation projects of the South and North Channels bifurcation and the cofferdam construction of middle and lower shoals under the complex hydrodynamic conditions in the Yangtze River estuary.

The expert panel unanimously agreed that the research tasks had been comprehensively fulfilled on schedule with abundant research findings, outstanding progress and expected goals after carefully listening to the results report. The simulation technology had been applied in the engineering practice of the Yangtze River estuary. The project smoothly passed the acceptance check with an excellent composite score.