Distortion Surface Model for Airfield Surface

A distortion surface mode is set up for airfield; the designed surface altitude of surface grid point is deduced, it is a linear function. The surface fit all kinds of airfield earth shape. The model is compiled a computer program with ARX method in AUTOCAD environment. The model can decide the different design blue print, compute the total earthwork volume under different control point altitude; also can decide the edge of border slope. The model is used in the YULIN civil airfield design, earth balance control point altitude is 1184.8 m, excavate earthwork is 2 440 500 m
³
, fill earthwork is 2 200 060 m
³
, and the figure of YULIN civil airport has been set up.