| Popis: |
Due to the disorder development of Beihai Silver Beach and the effects of the climate,there has been a serious phenomenon of beach erosion at Beihai Silver Beach,so to put forward effective and feasible maintenance methods of Silver Beach has the great significance.Through the sediment numerical simulation of the waters near the Silver Beach and analysis of the results and to conclude the law of sediment transport both in typhoon and normal wind and the sediment recovery mechanism of the Silver Beach.After a typhoon,the nearshore is scoured and the far offshore is deposited.The average scour depth is around 4cm and the average deposited height is around 2cm.The normal wind period is the sediment recovery period.After a year of normal wind,the nearshore and the far offshore is deposited,between them is a scouring area.The average scour depth is around 3cm and the average deposited height at the nearshore is around 4cm.The sediment recovery mechanism is that ,due to the dynamic action of the water in the normal wind period,it transports the deposition of sediment at the far offshore to the nearshore so as to make it recovered and gradually deposited.Based on the above regularity and mechanism,measures can be taken like that,to fill a sediment barrier parallel to the shoreline,which can make the water carry more sediment to the nearshore so as to speed up the recovery at Silver Beach.The sediment can be got from Baihutou and Yingpan Town. |
