基于点云数据与钻孔数据的土石方计算

Earthwork calculation based on point cloud data and borehole data

土方量和石方量的准确计算对控制工程预算和优化设计方案具有重要意义。文中以点云数据与钻孔数据为依据,分别建立地表曲面、土石分界曲面和设计开挖曲面,来计算土石方量,并对其精度进行了分析。结果表明:与RTK测量结果相比,土石方总量差值比为0.8%;经理论计算,石方量的相对误差为1.1%。

Accurate calculation of the amount of earthwork and stonework was the great significance for controlling engineering budget and optimizing design schemes.Based on the point cloud data and the borehole data,in this paper,the ground surface and the earth-rock boundary surface were established respectively,and the excavation surface was designed to calculate earthwork volume and the accuracy was analyzed.Results showed that the difference ratio of the total volume of earthwork was 0.8%comparing with the survey results of RTK;the relative error of the volume of stonework was 1.1%by the theoretical calculation.