人民长江
人民長江
인민장강
YANGTZE RIVER
2014年
9期
15-18
,共4页
河床演变%人类活动影响%河道容积%断面形态%飞云江河口
河床縯變%人類活動影響%河道容積%斷麵形態%飛雲江河口
하상연변%인류활동영향%하도용적%단면형태%비운강하구
river bed evolution%human activity influence%river volume%section morphology%estuary of Feiyun River
2000年以来，飞云江流域受上游珊溪水利枢纽工程建设、口外南北两侧大规模滩涂围垦、河道采砂、桥梁建设等人类活动的影响，河口河床发生了一系列变化。以2000年为界，利用此前22 a、其后12 a共30个测次的实测水下地形资料，分析了近10多年来飞云江河口的河床演变形势。研究表明，在相关人类活动影响下，河口河床容积较此前扩大约11.9%，河床冲淤变幅有所减小，河床稳定性有所增强；弯曲河段深槽由原来紧贴凹岸向走中发展，顺直河段断面形态由“W”形向“U”形发展。此外，对其影响原因进行了初步分析。
2000年以來，飛雲江流域受上遊珊溪水利樞紐工程建設、口外南北兩側大規模灘塗圍墾、河道採砂、橋樑建設等人類活動的影響，河口河床髮生瞭一繫列變化。以2000年為界，利用此前22 a、其後12 a共30箇測次的實測水下地形資料，分析瞭近10多年來飛雲江河口的河床縯變形勢。研究錶明，在相關人類活動影響下，河口河床容積較此前擴大約11.9%，河床遲淤變幅有所減小，河床穩定性有所增彊；彎麯河段深槽由原來緊貼凹岸嚮走中髮展，順直河段斷麵形態由“W”形嚮“U”形髮展。此外，對其影響原因進行瞭初步分析。
2000년이래，비운강류역수상유산계수리추뉴공정건설、구외남북량측대규모탄도위은、하도채사、교량건설등인류활동적영향，하구하상발생료일계렬변화。이2000년위계，이용차전22 a、기후12 a공30개측차적실측수하지형자료，분석료근10다년래비운강하구적하상연변형세。연구표명，재상관인류활동영향하，하구하상용적교차전확대약11.9%，하상충어변폭유소감소，하상은정성유소증강；만곡하단심조유원래긴첩요안향주중발전，순직하단단면형태유“W”형향“U”형발전。차외，대기영향원인진행료초보분석。
Since 2000, frequent human activities had been carried out in Feiyun River Basin, such as Shanxi water conservan-cy project construction, large-scaled beach reclamation, sand mining, bridge construction etc; therefore, a series changes oc-curred at Feiyun River estuarine riverbed. Using the measured underwater topographic data before and after 2000, the river bed evolution for more than 10 years was clarified. The research showed that riverbed volume has an expansion of 11. 9% after human activities;the fluvial amplitude has been decreased, and the riverbed stability is improved. The deep grooves at river bends de-velop from close to the concave bank to the middle;the morphology at straight river section develops from"W" to"U" type. The causes that lead to such phenomenon were analyzed.
