基于不同方法提取道路断面数据计算土方量精度分析

Accuracy analysis of earthwork calculation based on different extraction methods of road section data

介绍了基于DEM,克里金插值法生成的栅格预测表面,CASS软件提取断面数据的方法。对比这三种方法提取的断面数据计算出的土方量与实际测量的断面数据计算出的土方量之间的误差。运用统计得出克里金插值法生成的栅格预测表面提取的断面数据计算的土方量与实地测量的断面数据计算出的土方量误差最小,为缺少外业测量断面数据的道路土方量计算提供了理论依据,可大大减少外业测量工作量。

tion data extracted by the three methods and that from the actual measurement data. The results showed that the error of Kriging interpolation method was the smallest. This study has provided theoretical basis for earthwork calculation without actual road section data,which could significantly reduce the amount of field work.