三星堆月亮湾城墙遗址覆土方量计算

利用三维激光扫描技术获取三星堆月亮湾城墙遗址区高精度三维激光点云,实现了任意边界挖填方量的精确计算。采用IDL编制了海量激光点云存储与管理软件LIDARVIEW,应用海量激光点云网格分块技术和动态四叉树空间索引方法实现了海量激光点云数据的存储与管理。提出基于网格分块的地表植被和建筑物的自动过滤技术,建立三星堆月亮湾城墙遗址现状地表的DEM模型。结合三星堆月亮湾城墙遗址的覆土设计方案,得到月亮湾城墙遗址覆土后地表DEM数据和覆土四周边界数据。最后利用覆土前后地表的DEM数据,对三星堆月亮湾城墙遗址覆土方量进行计算。工程实例表明,该方法可以快速、高效地解决复杂工程的挖填方的方量计算。

Calculation of soil quantity in Moon Bay Wall Site of Sanxingdui

By using three-dimensional laser scanning technology,high-precision three-dimensional laser point cloud of the Moon Bay Wall Site of Sanxingdui was achieved.The volume of filling soil in arbitrary boundary could be accurately calculated.The massive laser point cloud storage and management software LIDARVIEW was programmed by means of the IDL language,in which the massive laser point cloud data could be stored and managed using the technology of massive laser point cloud grid blocking and the method of dynamic quadtree spatial index.The technology to automatically filter the vegetation and buildings on the ground was put forward,and a DEM model for the current ground surface of the Moon Bay Wall Site of Sanxingdui was established.Based on the design scheme of soil covering at the Moon Bay Wall Site,the DEM data of ground surface and the boundary data after covering soil were obtained.According to the DEM data of the ground surface before and after covering soil,the volume of filling soil was calculated.The project case indicates that the proposed method can rapidly and deficiently solve the calculation of the volume of filling soil for complicated projects.