多期水深测量数据的冲淤分析定量计算  

Quantitative Calculation for the Analysis of Erosion and Deposition of Multi-stage of Bathymetric Survey Data

作　　者：鞠海建 张英明 

机构地区：[1]南通市江海测绘院有限公司,江苏南通226003

出　　处：《现代测绘》2010年第2期43-45,共3页Modern Surveying and Mapping

摘　　要：由于受水流等因素影响,水下地形常发生冲淤剧烈变化,对江海沿岸水工设施的安全运营和航道的畅通产生举足轻重的影响,因此研究水下地形的变化幅度和变化规律尤为重要。传统的地形变化分析借助人工切断面进行计算,工作繁杂量大、精度难以得到保证,一般也只限于局部区域的分析,研究大范围冲淤变化难度较大。文章首先重点分析和解决如何利用计算机对多期水深测量的大量离散点采用科学的方法进行定量计算,并以此为理论依据编制了相关的程序,满足了水下地形分析中诸如两期冲淤等值分析,冲淤土方计算等实际生产需要,得到了生产实践的验证。The big change of scouring and silting usually takes in the underwater topography by so many effects just like water flow.So the importance for study the change range and variation law of underwater topography could give some influence upon the safety hydraulic facilities operation in rival sea coastal and the channels flowing.By means of artificial section,traditional topography transformation analysis has the disadvantage of complicated operation and low precision,and the use of it only limited to analysis local area rather than study the analysis of erosion and deposition in large scales.This paper first focus on how to use computers to analyze and solve the methods of quantitative calculation for multi stage of bathymetric survey＇s discrete points scientifically.And according to it,some program composition will be provided which could satisfy the analysis of underwater terrain as two stage of scouring and silting equivalence analysis for example.The earthwork calculation of scouring and silting has obtained the verification of production practice.

关 键 词：冲淤计算 插值方法 DELAUNAY三角剖分 程序编制 

分 类 号：P229[天文地球—大地测量学与测量工程]