摘要
黄河宁夏段外滩区域在右岸设置铅丝石笼用于保护外滩景区,因铁丝断裂导致石笼散架,失去固脚护坡的作用,故对该区域水下根石进行检测。利用声学多普勒测速仪(M9)和高精度RTK等测量仪器,对黄河宁夏段外滩区域设立的24个断面的水深、河床高程、含沙量和悬移质泥沙粒径分布进行了实测,得到了研究区域的等高线图和三维立体图;通过比较2018年6月和11月的两次河床高程实测结果,研究了近5月来河床冲淤变化情况;利用断面法计算了靠近右岸区域100 m处河床的淤积量,靠近右岸设置了石笼保护的水下根石附近区域淤积严重。
In the Waitan area of Ningxia section of Yellow River,the gabions are arranged on the right bank to protect river bank.Due to the breakage of steel wire,the gabion is scattered and the effect of bank bottom protection and supporting is lost.Therefore,the underwater root-rock in the area is explored.24 sections in the area are selected and the water depth,riverbed elevation,sediment concentration and suspended sediment particle size distribution of each section are measured by using the"River CAT"system and high-precision RTK measuring instruments.The contour map and three-dimensional map of study area are also obtained.By comparing two riverbed elevation measurement results in June and November 2018,the riverbed sedimentation and erosion in past five months are studied.The sedimentation amount of riverbed with a distance of 100 m to the right bank is calculated by section method,and the sedimentation in root-rock area near right bank with gabion protection is serious.
作者
乔桥
李春光
景何仿
黄凌霄
王维红
QIAO Qiao;LI Chunguang;JING Hefang;HUANG Lingxiao;WANG Weihong(School of Civil and Hydraulic Engineering,Ningxia University,Yinchuan 750021,Ningxia,China;School of Civil Engineering,North Minzu University,Yinchuan 750021,Ningxia,China)
出处
《水力发电》
北大核心
2019年第10期93-97,共5页
Water Power
基金
国家自然科学基金资助项目(11761005,11861003)
宁夏自然科学基金项目(2018AAC03043)
关键词
黄河
河床高程
水下根石
断面法
河床冲淤
Yellow River
riverbed elevation
underwater root-rock
section method
riverbed erosion