海洋科学2017，Vol.41Issue(3)：80-88,9.DOI:10.11759/hykx20160904002
盐城滨海港区防波堤建设对水下地形的影响研究
The influence of breakwater construction on the underwater terrain in the Binhai Port, Yancheng City
摘要
Abstract
A bathymetric survey and fixed-point observation of marine hydrology at the Binhai Port was conducted using the dual frequency sounder and acoustic Doppler current profiler. The characteristics of erosion and deposi-tion before and after breakwater construction were analyzed by comparing with data obtained from previous studies. The results showed that offshore slope was the major area of erosion, whereas sea-bottom plain was relatively stable in the last 20 years. Offshore slopes have a tendency of moving toward the shore. The area with the highest amount of erosion has a depth of around ?8 m to ?12 m. The rate of natural erosion has significantly lowered in recent times, and the average annual erosion rate is approximately 1/4 times of that observed in the last 10 years. The rectilinear flow was changed to rotating flow at the southern entrance, and it was influenced by the baffle effect of the break-water. Three deposition areas have been identified in recent years, the most serious area being the one at the harbor entrance; the maximum deposition in this area was 3.5 m in thickness and ?10 m in depth. The breakwater con-struction influenced approximately 13.4 km2 of the surrounding area, including the Yellow River Estuary. We ob-served that the construction of breakwater was an important factor for the redistribution of sediments. The study provided the basic data for the maintenance of the breakwater and the subsequent establishment of a 300000 ton waterway project on the Binhai Port.关键词
滨海港区/防波堤/冲淤变化/废黄河三角洲Key words
the Binhai Port/breakwater/erosion and deposition/abandoned the Yellow River Delta分类
海洋科学引用本文复制引用
刘强,闫玉茹,项立辉,张晓飞,彭修强..盐城滨海港区防波堤建设对水下地形的影响研究[J].海洋科学,2017,41(3):80-88,9.基金项目
中国地质调查局海洋地质保障工程专项(GZH201200506) （GZH201200506）
江苏沿海地区综合地质调查专项(苏国土资发[2014]47 号) [Foundation: Marine Geology Security Project of Geological Survey of China, No. GZH201200506 （苏国土资发[2014]47 号）
Comprehensive Geological Survey Project of Jiangsu Coastal Area, No. [2014]47] （）
