水电站河道冲刷破坏水下多波束测深检测分析  

Underwater Multi-beam Sounding Detection and Analysis of River Scouring Damage in Hydropower Station

作　　者：华朝锋 HUA Chaofeng(GuizhouWujiangdu Power Plant of GuizhouWujiang Hydropower Development Co. , Ltd. , Zunyi 563002, China)

机构地区：[1]贵州乌江水电开发有限责任公司乌江渡发电厂,贵州遵义563002

出　　处：《中国水能及电气化》2022年第4期42-47,共6页China Water Power & Electrification

摘　　要：为了准确掌握乌江渡水电站发电尾水下游河道及两岸边坡现存状态,文章采用多波速测深技术进行高质量水下全覆盖地形检测,获取高精度、高分辨率的水下地形探测数据,以查明河道底部冲刷破坏程度和冲坑面积及淘刷深度。结果表明,发电尾水下游河道存在3个冲坑,虽较1994年冲坑面积及深度有所增加,但未发现山体与河床结合面存在淘刷现象,基本不会对两岸边坡构成影响。多波束测深能获得详实冲刷磨损检测数据,能准确判断冲坑范围及破坏程度,可为类似工程水下冲刷破坏分析研究提供参考。Multi-beam sounding detection technology is adopted in the paper for high quality underwater full coverage topography detection in order to accurately grasp the existing state of downstream river channel and both bank slopes of power generation tail water of Wujiangdu Hydropower Station,thereby obtaining high accuracy and high-resolution underwater topography detection data,finding out the scouring damage degree atthe bottom of the river channel,the impact area and depth of the scouring pit.The results show that there are three scouring pits in the downstream area of the power generation tail water.Although the area and depth of the scouring pits are increased compared with that in 1994,no scouring phenomenon is found in the interface between mountain and river bed,and the slope on both sides is not affected basically.Multi-beam sounding can be applied for obtaining detailed scour wear detection data and accurately judging the extent of scouring pit and damage degree.It can provide reference for similar underwater scouringdamage analysis.

关 键 词：水下测量 多波束测深 冲刷淘蚀 乌江渡水电站 

分 类 号：TV698.25[水利工程—水利水电工程]