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茅家港突堤工程建造前后滩面沉积物粒度变化及其原因分析
引用本文:王建,王轲道,何加武. 茅家港突堤工程建造前后滩面沉积物粒度变化及其原因分析[J]. 海洋通报, 2005, 24(5): 39-46
作者姓名:王建  王轲道  何加武
作者单位:南京师范大学地理科学学院,江苏,南京,210097;临沂师范学院地理与旅游系,山东,临沂,276005
基金项目:教育部重点项目(00170)及国家教育振兴计划教育部青年教师奖励基金(2001JBC12)资助.致谢:徐孝彬、陈士涛等-起进行野外采样测量,王艳红曾帮助绘制图件,在此谨致谢忱!
摘    要:为研究茅家港附近岸滩面沉积物粒度的变化,在对茅家港近岸滩面沉积物粒度研究的基础上,于1993年9月、1994年1月进行了两次野外采样调查,在室内进行了粒度测量.通过测得的一手资料,绘出不同时间的粒度空间分布图和不同位置的剖面图,对茅家港滩面沉积物粒度的空间分布、季节变化及其反映的水动力变化和原因进行了分析研究,论述了茅家港工程建造前后滩面沉积物粒度变化的规律和原因.研究发现:工程建成后,因突堤内水动力减弱,突堤内滩面沉积物的粒度变细,且比突堤外的细,航道不再淤积,使航道的位置和深度稳定,有效地保护了航道;随着离岸距离增加,因水动力逐渐增强,滩面沉积物的粒径逐渐变粗;因冬季的水动力比夏季的水动力强,冬季滩面沉积物粒度比夏季粗.

关 键 词:茅家港工程  粒度变化  水动力  原因分析
文章编号:1001-6392(2005)05-0039-08
收稿时间:2004-09-06
修稿时间:2004-09-062005-03-28

Change of Sands Grain-size and Analysis of Its Reason After Building of Maojiagang Jetty Project
WANG Jian,WANG Kedao,HE Jiawu. Change of Sands Grain-size and Analysis of Its Reason After Building of Maojiagang Jetty Project[J]. Marine Science Bulletin, 2005, 24(5): 39-46
Authors:WANG Jian  WANG Kedao  HE Jiawu
Affiliation:1. College of Geographical Science, Nanjing Normal University, Nanjing 210097, Jiangsu, China; 2. Department of Geography and Tourism, Linyi Teachers College, Linyi 276005, Shandong, China
Abstract:In order to research the change of Maojiagang sands grain-size, on the basis of the measurement and research of Maojiagang sands grain-size, we sampled and surveyed in September of 1993 and January of 1994, and measured the grain-size in the house. This paper draws grain- sizes distributing maps and different section charts with the data that we observed on Maojiagang sands, analyzes the spatial distribution of Maojiagang sands grain-sizes, the seasonal change and its change of water dynamics, and discusses the rule and reason for the change of Maojiajang sands grain-size. We point out: after the Maojiagang jetty was built, because the water dynamics inside dams has neckend, the sands grain-size inside dams has become smaller and that is smaller than it outside dams, the sea-route is not filled up. The position and depth of the sea-route are unchanged, as a result it effectively protects the sea-route; with the distance to the coast increasing, the grain-size becomes larger for water dynamics is stronger. Water dynamics in winter is stronger than that in summer, as a result of which the grain-size in winter is bigger than it in summer.
Keywords:MaoJiaGang project   change of grain-size   water dynamics   analysis of reason
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