| 直立堤前海床的局部冲刷 |
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| 引用本文： | 赵子丹,薛晓春. 直立堤前海床的局部冲刷[J]. 海洋学报, 1998, 20(5): 136-141 |
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| 作者姓名： | 赵子丹 薛晓春 |
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| 作者单位： | 天津大学水资源与港湾工程系, 天津300072 |
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| 基金项目： | 国家教委高等学校博士学科点专项科研基金 |
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| 摘 要： | 对不规则波作用下直立堤前海床的局部冲刷进行了研究。研究了由于波浪作用导致床面的底沙运动,从而造成提前海床的局部冲刷,即所谓的“相对粒沙”的情况。报导了;(1)堤前海床面为水平、堤下无基床情况下的堤前局部冲刷,以及堤下有明基床时基床尺度对堤前局部冲刷的影响;(2)堤前海床面为斜坡面时堤前的局部冲刷,以及当堤下有明基床时基床尺度对堤前局部冲刷的影响;(3)从波浪作用下床面边界层的理论分析出发,对于在不规则波作用下,离堤面愈远处的冲刷坑深度愈小的事实给出了解释。
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| 关 键 词： | 不规则波 冲刷坑 边界层理论 传质速度 |
| 收稿时间： | 1996-07-24 |
| 修稿时间： | 1997-05-06 |
Scour in front of vertical breakwater by irregular waves |
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| Zhao Zidan and Xue Xiaochun. Scour in front of vertical breakwater by irregular waves[J]. Acta Oceanologica Sinica (in Chinese), 1998, 20(5): 136-141 |
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| Authors: | Zhao Zidan and Xue Xiaochun |
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| Affiliation: | Department of Water Resources and Harbour Engineering, Tianjin University, Tianjin 300072 |
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| Abstract: | The scour in front of vertical breakwater under the action of irregular waves was studied by the method of combined theoretical and experimental work. Basic conclusions of this study can be given as fol- lows: (1)The maximum depth of scouring trough can be detemined by Eq. (6), when the bottom surface is hor- izontal and the foundation of breakwater is under the cover of the bottom surface. (2) In case hc/h<0.4, the effect of hc on the scouring patterns is mot obvious. (3)The effect of the slope of the bottom surface on the scouring patterns is obvious. (4) As for the depths of scouring troughs, the more far from the breakwater, the more small. |
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| Keywords: | Irregular waves scouring trough boundary layer theory mass transport velocity |
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