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Study on the Suspended Sediment Transportation and Seabed Erosion and Deposition Surrounding Huanghua Harbor

Author: MaFang
Tutor: WuJianZheng；ZhuLongHai
School: Ocean University of China
Course: Ocean and Geology
Keywords: Huanghua Port Numerical Simulation Migration trajectory Concentration of suspension Erosion silt
CLC: P737.14
Type: Master's thesis
Year: 2007
Downloads: 170
Quote: 4
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Abstract


Huanghua Port in Hebei Province, 90km east of the city of Cangzhou Bohai Sea, Zhangweixin River intersection of the big mouth and declared Huihe Hebei side, is the second channel of China's west-east coal harbor. Since built in 2001, has been deeply the serious siltation troubled of the outer channel. As 2007 entered Yiduntaigang \In this paper, based on the years of the topography, hydrology and meteorology, sediment, and wind conditions measured and historical data, use of ECOMSED numerical model of the Huanghua Port waters near tidal field, under normal and windy weather suspended sediment migration and seabed erosion silt change analog research, proven its results with experimental data are in good agreement. The basic trend of sea waters flows was EW, flow rate is generally between 30cm / s ~ 65cm / s the tide flow rate greater than the ebb flow rate. Under normal weather conditions, the suspended sediment transport in the study area is mainly controlled by the trend, counter-clockwise rotation, after a tidal cycle, resulting the WSW to net displacement; throughout the study area suspended sediment concentration of 50mg / L ~ 350mg / L between the seaward concentration gradually decreasing trend; seabed erosion silt little change in the study area and suspended sediment corresponding to years of the biggest erosion and siltation of the amount of 7.5cm and 2.5cm, respectively. NE to windy role, the suspended sediment transport in the direction of the study area the WSW forward; suspended sediment concentrations were significantly increased compared with normal weather, 100mg / L ~ 5000mg / L, the concentration by the shore-to-sea gradually reduce ; more than six strong winds for 33 hours (maximum wind level 8) and 22 hours (9) of the maximum wind level in most parts of the study area in the erosion of state seaward of the Erosion gradually reduce silting serious siltation respectively 5cm ~ 38cm and 4cm ~ 26cm. NW to the high winds, the particles of suspended sediment in the study area to the SE migration, suspended sediment concentration around 50 ~ 1000mg / L, 6 gale role after 12 hours, the study area is slightly eroded, the erosion of about 1cm. fairway overall siltation about 2cm, the north side of siltation larger, about 8cm. Coastal waters near the sediment transport is a problem that must be addressed in the Coast ports running, this paper combined engineering practice the Huanghua Port waters surrounding the suspended sediment migration and Seabed Scour variation, Huanghua Port fairways siltation remediation providing scientific and technical information. While ECOMSED numerical model of the successful use of the study area, rich contents of ECOMSED numerical model provides a new method for sea waters.

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CLC: > Astronomy,Earth Sciences > Oceanography > Marine basic science > Marine geomorphology > Coastal landforms > Coastal sediment flow
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