水道港口
水道港口
수도항구
JOURNAL OF WATERWAY AND HARBOR
2015年
1期
1-7
,共7页
左书华%李松喆%韩志远%杨华
左書華%李鬆喆%韓誌遠%楊華
좌서화%리송철%한지원%양화
地形变化%泥沙回淤%长江口%北槽航道
地形變化%泥沙迴淤%長江口%北槽航道
지형변화%니사회어%장강구%북조항도
morphological change%siltation%Yangtze Estuary%North Passage Deep Waterways
以长江口北槽航道为研究对象，利用1997年12月～2013年2月多年实测水深资料和北槽深水航道一期工程开通以来维护疏浚资料，采用统计分析与对比方法分析了北槽河槽多年来的地形冲淤变化和一、二、三期航道航槽回淤特征。研究结果显示：（1）在此期间，在北槽上段北侧滩面和坝田大范围淤积，下段南侧滩面和坝田大范围淤积，北槽拐弯段为北槽淤积集中区域，河槽向窄深方向发展；（2）北槽航道年回淤量大，三期12.5 m航道期间，北槽航道年回淤量在6400万m3左右；（3）北槽航道回淤沿程分布差异大，北槽中段（H～O疏浚单元）的回淤量占北槽航道段回淤量的70%左右；（4）北槽航道洪季和枯季回淤差异大，洪季期间的回淤量占全年该段航道回淤量的80%以上；（5）北槽航道南北回淤差异大，南侧淤积高于北侧淤积400～1300万m3；（6）北槽12.5 m航道与10 m航道相比，全年回淤量有较大增加，洪季期间的回淤比重有所增大，北槽中段回淤峰值更加突出，略有所下移。
以長江口北槽航道為研究對象，利用1997年12月～2013年2月多年實測水深資料和北槽深水航道一期工程開通以來維護疏浚資料，採用統計分析與對比方法分析瞭北槽河槽多年來的地形遲淤變化和一、二、三期航道航槽迴淤特徵。研究結果顯示：（1）在此期間，在北槽上段北側灘麵和壩田大範圍淤積，下段南側灘麵和壩田大範圍淤積，北槽枴彎段為北槽淤積集中區域，河槽嚮窄深方嚮髮展；（2）北槽航道年迴淤量大，三期12.5 m航道期間，北槽航道年迴淤量在6400萬m3左右；（3）北槽航道迴淤沿程分佈差異大，北槽中段（H～O疏浚單元）的迴淤量佔北槽航道段迴淤量的70%左右；（4）北槽航道洪季和枯季迴淤差異大，洪季期間的迴淤量佔全年該段航道迴淤量的80%以上；（5）北槽航道南北迴淤差異大，南側淤積高于北側淤積400～1300萬m3；（6）北槽12.5 m航道與10 m航道相比，全年迴淤量有較大增加，洪季期間的迴淤比重有所增大，北槽中段迴淤峰值更加突齣，略有所下移。
이장강구북조항도위연구대상，이용1997년12월～2013년2월다년실측수심자료화북조심수항도일기공정개통이래유호소준자료，채용통계분석여대비방법분석료북조하조다년래적지형충어변화화일、이、삼기항도항조회어특정。연구결과현시：（1）재차기간，재북조상단북측탄면화패전대범위어적，하단남측탄면화패전대범위어적，북조괴만단위북조어적집중구역，하조향착심방향발전；（2）북조항도년회어량대，삼기12.5 m항도기간，북조항도년회어량재6400만m3좌우；（3）북조항도회어연정분포차이대，북조중단（H～O소준단원）적회어량점북조항도단회어량적70%좌우；（4）북조항도홍계화고계회어차이대，홍계기간적회어량점전년해단항도회어량적80%이상；（5）북조항도남북회어차이대，남측어적고우북측어적400～1300만m3；（6）북조12.5 m항도여10 m항도상비，전년회어량유교대증가，홍계기간적회어비중유소증대，북조중단회어봉치경가돌출，략유소하이。
Taking the North Passage of the Yangtze Estuary as a research object, based on topographic data and maintenance dredging materials of deep?water channel from Dec.1997 to Feb. 2013, morphological change and siltation of the North Passage Deep Waterways were analyzed. Results show:(1) there were wide range deposition in the north beach of the North Passage upside;the south beach of the North Passage downside presented widespread deposition;the bend section was focused area to silt;the channel form developed to the direction of narrow and deep;(2) siltation were large amount about 64 million m3 since the three phase 12.5 m waterway project with section and season difference;(3) siltation distribution was great different along the North Passage channel, siltation volume of middle section (H?O) accounts for 70%of total volume;(4) siltation was great different during flood season and dry season, siltation volume during flood season accounts for 80%above of yearly volume;(5) siltation in the south sec?tion was higher than the north section of about 4 million m3 to 13 million m3;(6) siltation distribution during three phase 12.5 m waterway project was different with two phase 10 m waterway project.
