| 摘要: |
| 铁板砂是一种存在于黄河水下三角洲的特殊沉积地貌，由粉土体海床普遍发育而形成显著沉积物硬层，因其表面的沉积物硬壳而俗称为“铁板砂”。目前，学界对于铁板砂的具体定义尚不明确，文章通过标贯击数对其进行了准确界定，并结合这一定义对所搜集的钻孔资料进行了是否属于铁板砂的判定。依据埕岛地区实测获得的数据对扰动土层加以划分，经分析比对，认为二者存在紧密的强相关关系，进而尝试划定了埕岛地区铁板砂的分布范围。 |
| 关键词: 埕岛地区 铁板砂 标贯击数 成因机制 扰动土层 |
| DOI：10.20016/j.cnki.hykfygl.2025.07.004 |
| 投稿时间：2024-12-01修订日期：2025-06-08 |
| 基金项目: |
|
| Distribution of Iron Sheet Sand in Chengdao Area |
| JIANG Yue,WANG Penglei,LYU Zhiwei,ZHANG Wang |
| North China Sea Survey Center, MNR |
| Abstract: |
| Iron plate sand is a special sedimentary geomorphology existing in the underwater delta of the Yellow River. It is formed by the widespread development of silt beds on the seabed, resulting in a distinct hard layer of sedimentand is commonly called "iron sheet sand" because of the hard crust of sediment on its surface. At present, the specific definition of iron sheet sand is not clear, this paper defines it accurately through the standard penetration number, and combines this definition to determine whether the collected drilling data belongs to iron sheet sand. According to the measured data in Chengdao area, the disturbed soil layers are divided. By comparison and analysis, it is considered that there is a close and strong correlation between them. |
| Key words: Chengdao area, Iron sheet sand, Standard penetration number, Cause mechanism, Disturbed soil layer |
