Recently, a new dynamic grid method based on Delaunay graph mapping was also proposed, which makes the moving or deforming of viscous grid easier and faster if the boundaries are moving.

This paper has applied the square grid method to deal with the calculation of earthwork for Gaofu Industry Area.

This paper has applied the square grid method to deal with the calculation of earthwork for Zixi Industrial Area.

The article calculates earthwork volume through grid method, establishes model by linear planning of operational research,optimizes blending scheme of earthwork using table dispatching method for transportation problems,and confirms blending direction and quantity of earthwork in fill and excavation district,in order to achieve the purposes of shortening time limit for a project and lowering cost.

Taking traditional grid method as the study object, based on DTM spatial analysis function in MapGIS and convenient statistics function in Microsoft Excel, the paper achieves the rapid calculation and automatic drawing of earthwork in land leveling.

After practical precision analysis on digital terrain models(DTM) and grid method for calculation of stripping quantity,it was thought that DTM is an easy method with high precision,appropriate to the calculation of stripping quantity in opencast coal mine.