太湖长兜港固体悬浮物再悬浮的室内模拟

Laboratory simulation of resuspension of suspended solids in Changdou Harbor of Taihu Lake

定量研究浅水湖泊动力扰动与沉积物再悬浮的关系,目前仍是湖泊研究中的难点之一。实验利用再悬浮发生装置,对太湖长兜港沉积物风浪扰动进行室内模拟,建立扰动强度与有效波高之间的关系,定量分析风浪对太湖水体中悬浮物的影响及固体悬浮物在水体中的垂向分布,初步得出风浪对太湖沉积物扰动深度一般在毫米级的结论。

Quantitative study on the relationship between hydrodynamic conditions and sediment resuspension in shallow lakes is still a difficult problem. In this experiment, resuspension equipment was used to simulate the effects of wind waves on resuspension of sediments in Changdou Harbor of Taihu Lake. The relatiomhip between disturbance intensity and effective wave height was presented, and the effects of wind waves on the sediments and the vertical distribution of suspended solids in water were analyzed quantitatively. The results showed that the disturbance depth of wind waves on sediments in Taihu Lake was generally in millimeters.