现代黄河三角洲沿岸泥沙运移与岸滩侵蚀态势研究

Study on the Longshore Sediment Transport and Coastal Erosion Situation in the Modern Yellow River Delta Area

现代黄河三角洲的泥沙运移是河-海动力相互作用下的泥沙分配和再分配结果。现行水口门区岸滩和水下岸坡仍以不大的速率向海淤进,三角洲西段和南段沿岸基本处于动态平衡状态,三角洲中段广大岸段大都处于不同程度的冲刷蚀退态势。冲刷蚀退已严重地恶化了黄河现代三角洲的发育功能和三角洲经济开发环境,对油田的滩海工程和海上设施造成了严重威胁。

The sediment transport in the modern Yellow River delta area results from the sediment distribution and redistribution under the dynamic interactions of river and sea. The coastal beach and subaqueous coastal slope in the river mouth area plograde seaward at a low speed, the west section and south section of the river delta coast are basically in a state of dynamic balance, and the extensive middle section of the river delta coast is mostly in different erosion situations. These erosion situations have deteriorated the developing function and economic exploitation environment of the modern Yellow River delta and have constituted a serious threat to the oil field shallow engineering and offshore installation.