OPENING UP OF THE TIDAL INLET (NACHAO RIVER) ON CAOFEIDIAN SHOAL IN TANGSHAN, HEBEI PROVINCE AND ITS SIGNIFICANCE
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摘要:
曹妃甸填海工程初期规划有明显缺陷,填海面积过大,尤其是阻断了浅滩潮道(纳潮河),对海洋环境、老龙沟港口潜力区有明显损害。作者的积极建议和相关论文的发表促成了2007年曹妃甸新填海规划的出台,其中保留浅滩潮道(即开通纳潮河)和在老龙沟上游修建大港池是新规划的主要改进内容。阻断浅滩潮道后曹妃甸区域的地形地貌及水动力变化证实了作者观点的正确性。纳潮河于2016年8月开通。纳潮河的开通,可大大提升曹妃甸景观,增加约40 km不淤积的优良海岸线,部分恢复原海洋潮流系统和保护海洋环境,促进海水的循环,并使曹妃甸的几个港池不再淤积或淤积变轻。
Abstract:The initial Caofeidian Reclamation Project was apparently defective in excessive reclaiming areas, which blocked the shoal tidal inlet, and brought obvious damages to the marine environment and the Laolonggou Harbor potential zone. In 2007, the authors made a positive suggestion on the plan and published several papers to facilitate the new reclamation plan in 2007. The key point of the new plan is to reopen the inlet or Nachao River and to build a large harbor pool in the upper reach of the Laolonggou channel. The topographic and geomorphic transformations as well as the hydrodynamic changes taking place in recent years in the Caofeidian region after the shoal tidal inlet blocked have proven the correctness of the writer's viewpoints. In August of 2016, the shoal tidal inlet or the Nachao River was reopened finally. The opening up of the Nachao River can improve the Caofeidian landscape, increase about 40km of coastline without siltation, partly recover the marine tidal system, protect marine environment, facilitate the seawater circulation, and avoid siltation in harbor pools.
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Key words:
- shoal tidal inlet /
- Nachao River /
- Laolonggou deep trough /
- tidal system /
- silty
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表 1 横切曹妃甸老龙沟深槽口门处的A—B地形剖面1992年与2006年的代表性点位水深变化比较
Table 1. The comparison of the water depth change of representative point positions of A-B topographical profile at the transverse Laolonggou deep trough mouth in Caofeidian area between 1992 and 2006
从剖面起点的距离/m 水深/m 水深变化/m 1992年 2006年6月 0 -2.3 -2.26 0.04 160 -3.3 -3.56 -0.26 360 -3.6 -5.57 -2.15 560 -3.8 -8.59 -4.79 760 -4.3 -9.63 -5.33 960 -6.0 -10.07 -4.07 1 060 -7.0 -10.27 -3.27 1 160 -8.4 -10.56 -2.16 1 260 -10.0 -11.37 -1.37 1 360 -11.6 -12.43 -0.83 1 460 -13.0 -13.15 -0.15 1 560 -14.0 -13.39 0.61 1 660 -14.5 -13.01 1.49 1 760 -14.2 -11.73 2.47 1 860 -13.0 -9.23 3.77 1 960 -11.5 -7.47 4.03 2 060 -10.0 -6.21 3.79 2 260 -7.7 -4.52 3.18 2 460 -5.4 -3.13 2.27 2 660 -3.8 -1.45 2.35 2 680 -2.0 -0.20 1.80 3 060 -0.5 0.41 0.91 3 260 0.3 0.50 0.20 3 460 0.5 0.49 -0.01 3 760 0.7 0.72 0.02 3 960 1.05 1.07 0.02 注:水深变化一栏中,“+”表示淤积,“-”表示冲刷 -
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