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Volume 33 Issue 5

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Article Navigation > Haiyang Xuebao > 2011 > 33(5): 152-162

CAO Zu-de, KONG Ling-shuang. Sediment problems of harbor on silt-sandy beach[J]. Haiyang Xuebao, 2011, 33(5): 152-162.

Citation:

CAO Zu-de, KONG Ling-shuang. Sediment problems of harbor on silt-sandy beach[J]. Haiyang Xuebao, 2011, 33(5): 152-162.

CAO Zu-de, KONG Ling-shuang. Sediment problems of harbor on silt-sandy beach[J]. Haiyang Xuebao, 2011, 33(5): 152-162.

Citation:

CAO Zu-de, KONG Ling-shuang. Sediment problems of harbor on silt-sandy beach[J]. Haiyang Xuebao, 2011, 33(5): 152-162.

Sediment problems of harbor on silt-sandy beach

CAO Zu-de¹,
KONG Ling-shuang²

1.
Tianjin Scientific Research Institute for Water Transport Engineering, Tianjin 300456, China
2.
Estuarine & Coastal Science Research Center, Shanghai 201201,China

Received Date: 2009-05-28

Abstract

The sediment movement characteristics of silt-sandy beach are studied systematically. The following five aspects are instructed: (1) definition of silt-sandy beach, (2) the basic hydraulic characteristics of sediment, (3) the patterns of sediment movement, (4) the statistical characteristics of sudden siltation in the channel, (5) the siltation calculation of channel. It is provided that the median size of sediment, the silt percentage and the sorting coefficient should be considered in definition of silt-sandy beach. The sand on the silt-sandy beach moves actively, the threshold velocity is small and the settling velocity is large. Because three movement patterns that are suspended sediment, near-bed water layer of high sediment concentration and bed load coexist on silt-sandy beach,the three-layer mode for siltation calculation of channel is put forward. The relation of sudden siltation and effective wind energy is built and the probability statistical method of sudden siltation is advanced.
- silt-sandy beach,
- hydraulic characteristics of sediment,
- patterns of sediment movement,
- sudden siltation

References

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