SCOURING AND SILTING CHARACTERISTICS OF THE COASTAL WATERS IN NORTHERN BINZHOU
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摘要:
利用表层沉积物及水深地形等实测资料，结合泥沙起动流速公式、潮流场数值模拟等方法，对滨州北部近岸海域的冲淤特征进行了初步探讨。研究结果表明，1983—2001年研究区的侵蚀区域主要分布在4 m等深线以内，侵蚀量一般为0.2 m左右，套尔河河口及河口西侧侵蚀量较大，而河口以东则表现为淤积；4 m等深线以外淤积现象明显，淤积量一般为0.3 m，向海方向淤积量有变大的趋势。2001—2016年，0 m等深线以内主要以淤积为主，淤积量的高值区出现在滨州港防波堤西侧、马颊河河口附近；0~4 m等深线之间以侵蚀为主，侵蚀量平均约0.6 m；4 m等深线外侧海域则主要为轻微的淤积状态，仅在滨州港防波堤堤头附近区域为侵蚀状态。港口工程对潮流场和波浪场的影响显著，是控制研究区冲淤变化的重要因素。
Abstract:In this paper, the scouring and silting characteristics of the northern coastal waters of Binzhou are discussed upon the measured data for surface sediments and water depth, with the help of sedimentation velocity formula for numerical simulation of tidal current field. The results show that from 1983 to 2001, erosion happened mainly in the area shallower than 4m, the amount of erosion is about 0.2 m in average and the area with largest erosions appears in the estuary of the Taoer River and the area on the west side of the estuary, while the east of the estuary is under siltation.Siltation is obvious in the area outside the 4m isobaths and the total amount of deposition is about 0.3 m. The volume of siltation tends to increase as the water depth increases. From 2001 to 2016, the area within the 0m isobath is mainly under siltation, with the strong siltation area near the Majia River estuary in the west side of the Binzhou harbor breakwater. The area between 0~4 m isobath is mainly under erosion, and the average amount of erosion is about 0.6m. The area outside of the 4m isobath is mainly in a slight siltation state, and the erosion occurs only in the area near the embankment of the Binzhou Port.The influence of port engineering is suspected the major factor in controlling the scouring and silting regimes in the study area.
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表 1 波浪破碎水深计算结果
Table 1. Calculation of wave breaking water depth
重现期 浪向 有效波高H1/3/m 谱峰周期Ts/s 破碎水深db/m 2年一遇 N 2.79 6.71 4.0 NE 2.92 7.19 4.2 ENE 2.92 7.02 4.2 
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