There are some basic methods in calculation of cutting and filling,such as grid,section,contour,and DTM method,and so on. Through comparison,DTM method is considered that it is one method,which being much exact and effective in these methods.

• 土方计算的基本方法有格网法、断面法、等高线法及基于数字地面模型(DTM)的方法等,通过试验比较,DTM是较为准确、有效的方法之一。