基于BIM+GIS技术的河床演变分析

Analysis of riverbed evolution based on BIM+GIS technology

传统河床演变分析存在工作量大、无专业辅助工具、生产效率低下、收集历年河床地形资料困难、实测地图成本高、动床演变资料稀少等问题。针对以上问题,采用Civil 3D二次开发技术,研究出一套适用于河道分析的专业方法,成功实现了河床演变智能化出图、智能化计算冲淤量等功能。通过BIM+GIS河演分析技术,总结河演规律,协助布设整治方案,验证设计方案的合理性,初步解决了动床航道整治方案布设困难的问题。这种分析技术极大提高了生产力,可为类似工程提供参考。

There are some problems in the traditional analysis of riverbed evolution,such as heavy workload,no professional auxiliary tools,low production efficiency,difficulty in collecting river bed topography data over the years,high cost of measured maps,and scarcity of moving bed evolution data.Aiming at the above problems,a set of professional methods suitable for river channel analysis is developed by using the secondary development technology of Civil 3D,which successfully realizes the functions of intelligent mapping of river bed evolution and intelligent calculation of scouring and silting amount.Through BIM+GIS river simulation analysis technology,the river performance rules are summarized,the regulation scheme layout is assisted,the rationality of design is verified,and the problem of difficulty in the layout of the movable bed waterway regulation plan is preliminarily solved.The analysis technology greatly improves productivity and provides references for similar projects.