Advances in technologies of river closure in China;

The slumping mechanism of the TGPs main channel closure dike is analysed in the paper.

As one of the key control points in the construction network plan routine of the TGP, the main channel closure and the second phase cofferdam works directly relate to completion date and success of the TGP.

Experimantal results demonstrated that: (1) Dumping excavated rock materials in advance at bottom of the final gap can ensure the main channel closure being completed smoothly in 1997.

Design of river closure of Jinping-Ⅰ Hydropower Station;

The construction of second phase cofferdam has experienced several key stages such as dumped rockfill cushion, river closure, weathered sand vibroflotation compaction, seepage control construction, heightening cofferdam during flood season, etc.

By this system,any flow field in the river closure can by obtained in very short time, and the result can provide scientific basisfor constructional decision.

Emergency mechanisms of water pollution accidents for Yangtze valley;

Evolutional mechanism of geo -ecological environment and comprehensive division of natural disaster in the Yangtze Valley;

Consideration on modern water resources management of the Yangtze valley;