SEDIMENTARY ENVIRONMENT AND EROSION-DEPOSITIONAL PATTERN OF THE OUTER CHANNEL OF LIANYUNGANG PORT
-
摘要: 1855年黄河回归渤海,苏北沿岸陆源供沙基本断绝,连云港外航道海域逐渐成为冲刷性滨海环境。通过环境演化、地形地貌和波、流、沙等环境要素分析认为,1855年黄河供沙断绝后,在波-流联合作用下,研究区总体呈现冲刷态势;水体含沙量0.43 kg/m3可作为冲淤转换的判据。1973年以来的港口建设期间,研究区受工程弃土影响而表现为淤积,但这是人工所致,工程结束后或工程间隙期逐渐被冲刷夷平。人为引起的淤积不能取代自然作用引起的冲刷,这一冲刷特征对连云港正在开展的徐圩港区建设和30万t级航道疏浚工程是有利的。Abstract: The sand supply to Jiangsu coast was cut off after Yellow River shifted to north into the Bohai Bay in 1885, and then the outer channel of Lianyungang turned to an erosional environment. This paper is devoted to the evolution of erosion-deposition pattern of the area based on studies of changes in environment, topography, wave, coastal current, sand input and other environmental elements. It is found that 0.43kg/m3 of sediment supply is the lowest limit to profect the coast from erosion. Since 1973, the area has become depositional due to the input of large amount of the abandoned soil and sand from the harbor construction. However, the deposition is induced by human activities. It will be replaced by erosion as soon as the project ends. The erosional manner is beneficial to the Xuwei port and the ongoing dredging project for the 30 DWT channel at Lianyungang.
-
Key words:
- the outer channel /
- environment evolution /
- deposition-erosion pattern /
- Lianyungang port
-
-
[1] 张国桥,董旭. 港城关系发展阶段及协调程度分析——以连云港为例[J]. 港口经济, 2010, 10:29-33.[ZHANG Guoqiao, DONG Xu. The analysis of harbour city relationship development stage and coordination degree -A case of Lianyungang[J]. Port Economic, 2010
, 10:29-33.]
[2] 陈祥锋,贾海林,刘苍字. 连云港南部近岸沉积特征与沉积环境[J]. 华东师范大学学报:自然科学版, 2000, 1:74-81.[CHEN Xiangfeng, JIA Hailin, LIU Cangzi. Sedimentary character and sedimentary environment of nearshore zone in Southern Lianyungang[J]. Journal of East China Normal University (Natural Science), 2000
, 1:74-81.]
[3] 范恩梅, 陈沈良, 张国安. 连云港近岸海域沉积物特征与沉积环境[J]. 海洋地质与第四纪地质. 2009.29(2):33-40.
[FAN Enmei, CHEN Shenliang, ZHANG Guoan. Sediment characteristics and sedimentary environment in Lianyungang coastal waters[J].Marine Geology and Quaternary Geology, 2009, 29(2):33-40.]
[4] 张存勇, 冯秀丽. 连云港近岸海域沉积物粒度空间分布特征及其分析[J]. 海洋学报, 2009, 31(9):120-127.
[ZHANG Cunyong, FENG Xiuli. The spatial distribution and analysis about the grain-size of sediments in the Lianyungang nearshore sea area[J]. Acta Oceanologica Sinica, 2009, 31(4):120-127.]
[5] 叶青超. 试论苏北废黄河三角洲的发育[J]. 地理学报, 1986, 41(2):112-122.
[YE Qingchao. On the development of the abandoned Yellow River Delta in Northern Jiangsu Province[J]. Acta Oceanologica Sinica, 1986, 41(2):112-122.]
[6] 高抒. 废黄河口海岸侵蚀与对策[J]. 海岸工程, 1989, 8(1):37-42.
[GAO Su. Erosion of old Yellow River Delta in northern Jiangsu and coast protection[J]. Coastal Engineering, 1989, 8(1):37-42.]
[7] 虞志英, 陈德昌, 金镠. 江苏北部旧黄河水下三角洲的形成及其侵蚀改造[J]. 海洋学报, 1986, 8(2):197-206.
[YU Zhiying, CHEN Dechang, JIN Liu. Formation and transformation erosion of old Yellow River subaqueous delta in northern Jiangsu Province[J]. Acta Oceanologica Sinica, 1986, 8(2):197-206.]
[8] Yu Z Y, Zhang Y, Chen D C, et al.. The hydrodynamical characteristics of nearshore waters and discharging process of mud flats-A case study of the mud flats near Lianyungang[J]. China Journal of Oceanology and Limnology, 1987, 5(2):97-108.
[9] 樊社军,虞志英,金镠. 淤泥质岸滩侵蚀堆积动力机制及剖面模式-以连云港地区淤泥质海岸为例I. 波浪和潮流[J]. 海洋学报, 1997, 19(3):66-75.
[FAN Shejun, YU Zhiying, JIN Liu. Erosion accumulation dynamic mechanism and Profile mode of mud flats-A case study of the mud flats in LianyungangⅠ.wave and tide[J]. Acta Oceanologica Sinica, 1997, 19(3):66-75.]
[10] Wells J T. Suspension and transportation of fluid mud by solitary like waves[C]//Proceedings of 16th Coastal Engineering Conference. 1978:1932-1952.
[11] 陈德昌, 唐寅德, 虞志英. 连云港抛泥区弃土的流失及其对外航道回淤的影响[J]. 华东师范大学学报:自然科学版, 1988, 2:69-78.[CHEN Dechang, TANG Yinde, YU Zhiying. Dispersion of waste mud in dumping ground of Lianyungang harbour and its effects on siltation in outer navigable channel[J]. Journal of East China Normal University (Natural Science), 1988
, 2:69-78.]
[12] Yu Z Y, Jin L. Consideration of hydrodynamic characteristics, sediments & environmental problems of muddy coast in the construction of Lianyungang Harbour[J]. China Journal of Oceanology and Limnology, 1994, 12(2):97-105.
[13] 唐寅德,张勇,虞志英,等. 连云港海峡西口外淤泥海滩演变的随机模拟[J]. 海洋与湖沼, 1991, 22(5):492-500.
[TANG Yinde, ZHANG Yong, YU Zhiying, et al. Stochastic modeling of western muddy beach process in Lianyun strait[J]. Oceanologic et Limnologic Sinica, 1991, 22(5):492-500.]
[14] Xie M X, Zhang W. Three dimensional numerical modeling of the cross-flow features in approach channel[C]//Proceedings of 16th IAHR-APD Congress and 3rd Symposium of IAHR-ISHS. 2007.
[15] 陈昌礼. 用遥感和声纳图像分析连云港冲淤特征[J]. 泥沙研究, 1989, 6(2):55-61.
[CHEN hangli.. Analysis Lianyungang erosion and deposition characteristics with remote sensing and sonar image[J].Journal of Sediment Research, 1989, 6(2):55-61.]
[16] 陈祥锋, 刘苍字, 虞志英. 连云港南部近岸带冲淤变化分析[J].海洋工程, 2001,19(3):96-107.
[CHEN Xiangfeng, LIU Cangzi, YU Zhiying. Accretion erosion analysis of the inshore belt of Southern Lianyungang Harbor[J]. Ocean Engineering, 2001, 1(3):96-107.]
[17] 张瑞瑾. 河流泥沙动力学[M]. 北京:水利水电出版社, 1998.[ZHANG Riujin. River Sediment Dynamics[M].Beijing:China Water Power Press, 1998.]
-
计量
- 文章访问数: 1152
- PDF下载数: 3
- 施引文献: 0
下载: