多波束定点实时冲刷监测系统构建及应用  

Construction and application of fixed-point and real-time monitoring system based on multibeam sounding system

作　　者：李最森[1,2] 章琪 魏荣灏 张芝永[1,2] 吴智敏 LI Zuisen;ZHANG Qi;WEI Ronghao;ZHANG Zhiyong;WU Zhimin(Zhejiang Institute of Hydraulics and Estuary,Hangzhou 310020,China;Key Laboratory of Estuary and Coast of Zhejiang Province,Hangzhou 310020,China;Fuyang District Agricultural and Rural Bureau,Hangzhou 311400,China;Zhejiang Shuren University,Hangzhou 310015,China)

机构地区：[1]浙江省水利河口研究院,浙江杭州310020 [2]浙江省河口海岸重点实验室,浙江杭州310020 [3]富阳区农业农村局,浙江杭州311400 [4]浙江树人学院,浙江杭州310015

出　　处：《水利水运工程学报》2023年第6期176-182,共7页Hydro-Science and Engineering

基　　金：国家自然科学基金面上项目(52078461);浙江省基础公益研究计划项目(LTGS23E090004);浙江省水利河口研究院长基金重点项目(ZIHE21Z007);浙江省省属科研院所扶持经费资助项目(海测A21004)。

摘　　要：随着沿海地区经济和城市群一体化的高速发展,跨海大桥和海塘的规模与数量与日俱增,强潮区域的桥梁、海塘等海洋结构物易受局部冲刷,影响安全运行。如何对此类结构物的局部冲刷进行实时监测和研究分析已成为目前海洋工程安全领域的难点。通过总结分析以往冲刷监测技术的优缺点及其适用性,研发了多波束定点实时监测系统,改进了数据实时采集和处理方法,为冲刷机理研究和海洋结构物防灾减灾提供具有时间序列的全覆盖水下地形数据。并通过实测数据拟合适用于跨海大桥的冲刷计算式,为桥墩及海塘等结构物的冲刷机理研究和冲刷预报提供基础数据和计算方法。With the rapid development of economics and urban integration in coastal areas,the amounts of wading constructions such as sea-crossing bridges and natural disasters-prevention sea-walls increase faster.However,in tidal race waters,severe sectional scour induced by tidal flows often appears around marine structures and has been the main threat to those marine structures.Hence,the real-time monitoring and the study of sectional scouring of bridge piers and seawalls become the key to solve the difficulties.We analyzed the applications as well as the strengths and shortcomings of former technologies of scouring monitoring,so then studied and developed the fixed-point multi-beam echo sounder monitoring system of real-time.The system offers underwater topographic data of real-time time serials and full coverage,and also supports the study of scouring as well as the prevention and reduction of disasters in wading constructions through those data.We also proposed a fitting formula from the data observed by the system that provides with a method for calculating the scour depth,so as to support the study of souring mechanism and the forecast of scouring process with key basic scouring data and a calculating method.

关 键 词：局部冲刷 实时监测 多波束 全覆盖水下地形 时序数据 

分 类 号：P229.1[天文地球—大地测量学与测量工程] U446.2[天文地球—测绘科学与技术]