不同土方测量方法的比较与评价

A comparative evaluation of several methods for earthwork volume measurement

对土方量的测量计算方法进行对比和评价,结果表明:在方格法、等高线法、断面法和DEM法等4种方法中以DEM法的计算精度最好,利用全站仪采集数据、DEM法计算土方量是目前精度最高和速度最快的测量方法,适合于任何地形的土方测量;经纬仪测量适合于精度要求不高的丘陵地区的土方测量;水准仪测量地面高程的精度较高,野外测量简单、成本低,适合于平坦地形的土方测量。

In this paper, three most frequently used methods for the earthwork volume measure was analyzed using the law of error propogation. The results showed that among the four methods for the earthwork count, the pricision of DEM method is the best. So far, the combination of the total station for data collection and DEM method for the earthwork count was the best precistion and time efficiency, and was applicable to any kind of terrian. Theodolite was suitable for measuring in the hilly area with not high requirement of the precision. Leveling method was suitable for the even terrian for its better precision, simple operation and cost-efficiency.