本文關(guān)鍵詞： 興化灣 泥沙特征 含沙量 水沙輸移 地形變化 潮汐　出處：《長(zhǎng)江科學(xué)院院報(bào)》2017年08期 　論文類型：期刊論文

【摘要】：為了查明興化灣海域泥沙特征及地形變化,基于2013年7月份興化灣海域水文泥沙測(cè)驗(yàn)資料,分析了研究區(qū)域的泥沙分布特性,并結(jié)合興化灣深槽歷年實(shí)測(cè)數(shù)據(jù)探討了懸沙運(yùn)移對(duì)其水下地形變化的影響。分析結(jié)果表明:測(cè)區(qū)含沙量較小,本次測(cè)驗(yàn)平均含沙量為0.062 kg/m~3,大潮的平均含沙量較大,小潮的平均含沙量較小;含沙量的漲、落潮變化明顯,最大含沙量多出現(xiàn)在最大漲急時(shí)刻附近,最小含沙量多出現(xiàn)在最大落急時(shí)刻附近,表明測(cè)驗(yàn)海域泥沙受到的擾動(dòng)較小;各測(cè)點(diǎn)漲潮輸沙率占優(yōu)勢(shì),但漲、落潮輸沙率絕對(duì)值都很小;研究海域泥沙隨潮流往復(fù)進(jìn)出,總體上為漲潮流方向,即由東南向西北運(yùn)移,這與江陰壁頭附近的情況相吻合,即深槽寬度不斷向兩側(cè)擴(kuò)展,而海底水深穩(wěn)中有沖,基本處于略有沖刷的平衡狀態(tài)。
[Abstract]:In order to find out the sediment characteristics and topographic changes in the Xinghua Bay, based on the hydrological sediment test data of Xinghua Bay in July 2013, the characteristics of sediment distribution in the study area are analyzed. The influence of suspended sediment migration on the change of underwater topography is discussed based on the measured data of Xinghua Bay deep trough over the years. The results show that the sediment content in the measured area is relatively small, the average sediment content in this test is 0.062 kg / m ~ (-1), and the average sediment content in the spring tide is larger. The average sediment content of the low tide is small, the change of the falling tide is obvious with the increase of the sediment content, the maximum sediment content appears near the maximum rising and sharp moment, the minimum sediment content appears near the maximum drop time, which indicates that the disturbance of sediment in the test sea area is small. The sediment transport rate of high tide is dominant, but the absolute value of sediment transport rate of rising tide and falling tide is very small. The sediment in and out of the study area is the direction of rising tide, that is, moving from southeast to northwest, which coincides with the situation near Jiangyin Wall head. That is, the width of deep trough expands to both sides continuously, and the seabed water depth is steady, which is basically in the balance state of slight scour.
【作者單位】： 重慶水利電力職業(yè)技術(shù)學(xué)院水利工程系;
【基金】：重慶市基礎(chǔ)與前沿研究計(jì)劃項(xiàng)目(cstc2014jcyj A20009) 重慶市教委科研項(xiàng)目(KJ1403602)
【分類號(hào)】：TV148

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