silt field
3.This paper analyzed the basic characteristics of the ebb-tidal delta of Zhanjiang Harbor including the morphological structure (semi-circular shoals around central trough), surface sediment distribution (coarse sand to very fine sand with little silt and clay from center to periphery) and hydrodynamical field structure (ebb tidal current dominant in the main ebb-tidal channel, and wave and flood tidal current domimant in the semi-circular shoals).
4.By conducting field loading tests on single pile and composite foundations with single pile,four piles and nine piles with different lengths and area replacement ratios about compacted soil-cement pile composite foundation in unsaturated clay and silt,the failure pattern and the effect of pile length and area replacement ratio on bearing capacity of composite foundation are studied.
5.There exists a vacillated riverbed, about 2km wide, around the Najin hydroelectic station on the Lasa river. Based on velocity field analysis and model test, an optimal scheme was chosen for the setting of silt releasing sluice. Consequently, the back flow in the reservoir of the hydropower station was eliminated.
