Research and Application for the Calculating Method of the Earthwork Volume Based on TIN Model

Earthwork volume calculations are often met in the project problems. Quick,accurate and efficient calculating earthwork volume has a very important significance for arranging the project progress reasonably,engineering size calculations and investment budget. Using the GPS receiver to obtain three-dimensional terrain point data and using the triangular prism method in ARCGIS to calculate fill-in and excavation earthwork volume based on TIN model. With Mianchixian Honghuawo Land Development and Consolidation Project as an example to introduce the detailed calculation steps,and fill-in and excavation earthwork volume calculation results are compared with the actual results,the excavation error is about- 4. 7% and fill-in error is about- 1%. Studies show that the method is feasible for earthwork volume calculations,with high accuracy and visualization that can be used as the main method of earthwork volume calculation.