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基于对2013年10月获取的黄河口近岸海域28个沉积物样品的激光粒度分析和X-射线衍射(XRD)分析,探讨了调水调沙工程长期实施对沉积物粒度分布以及蒙皂石、伊利石、高岭石、绿泥石这4种矿物组成特征的影响.结果表明,2002年调水调沙工程实施以来,黄河口近岸海域的沉积物粒度尽管在砂含量上(平均约占23.5%)较渤海海域和黄河沉积物高,但仍主要以粉砂为主(平均约占59.1%),黏土组分相对较少(平均约占17.4%).黄河口近岸海域的黏土矿物组成与黄河沉积物的组成相近,但较调水调沙工程实施前存在较大差异,其不同组分含量整体表现为伊利石>蒙皂石>绿泥石>高岭石.研究发现,相对渤海海域大范围的研究,对黄河口近岸海域的局部研究更能揭示调水调沙工程长期实施对河口沉积环境的影响.
Based on the laser particle size analysis and X-ray diffraction (XRD) analysis of 28 sediment samples collected from the coastal area of the Yellow River estuary in October 2013, the effects of long-term implementation of water and sediment regulation on sediment grain size distribution and smectite , Illite, kaolinite and chlorite.The results show that, since the implementation of the water and sediment regulation project in 2002, the sediment grain size in the coastal area of the Yellow River estuary, despite the fact that the sand content is about Accounting for 23.5%) than the Bohai Sea and the Yellow River sediments, but still dominated mainly by silt (about 59.1% on average), relatively few clay components (about 17.4% on average) The mineral composition is similar to that of the Yellow River sediments, but there is a big difference before the implementation of the water and sediment regulation project, and the contents of different components show as follows: illite, smectite, chlorite and kaolinite, Relatively large area of the Bohai Sea, the study of the Yellow River estuary offshore area more revealing the long-term implementation of water and sediment impact on estuary sediment environment.