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.
出处
《现代测绘》
2010年第2期43-45,共3页
Modern Surveying and Mapping
关键词
冲淤计算
插值方法
DELAUNAY三角剖分
程序编制
scouring and silting calculation
interpolation method
delaunay triangulation program composition
