论文部分内容阅读
通过对近20 a实测水文地形资料的深入分析,得到了灌河干流河道及出口水道的冲淤演变规律:干流河道在盐东控制闸建闸前,以响水为界上段冲刷下段淤积,建闸后,从多年平均来看上段明显淤积下段冲刷;近10 a来,陈家港以下的干流河道弯道凹岸处均为深槽逼岸的冲刷区,且处在持续稳定冲刷状态;自20世纪80年代以来,灌河口外岸滩冲刷强度减弱,近10 a来,河口外冲淤近于平衡状态。这些研究为灌河口码头、航道等工程建设提供科学依据。
Through the in-depth analysis of the observed data of nearly 20 years of hydrological terrain, the evolution of the scouring and silting in the main channel and the outlet channel of the main channel of the Irrigation Canal is obtained. Before the sluice of the Yandong Control Gate is built, After the floodgates, the upper section of the upper section was obviously silted with erosion of the lower section for many years. In the last 10 years, the concave bank at the corners of the main channel below Chenjiagang was a scouring area for deep-bank tillage and sustained erosion; Since the 1980s, the erosion intensity of the outer shoal of the Guan River estuary has weakened. In the past 10 years, the scour outside the estuary has been near equilibrium. These studies provide a scientific basis for construction of irrigation terminals and navigation channels in Guanhe estuary.