The interpolation face of coal seams is trimmed by boundary and the closed polygons of up and down faulted blocks to form the deposit interface model.The earths surface model is founded.

• 地质界面模型是由煤层的顶底板插值曲面经煤层边界和断层曲面裁剪而成的,地表面模型是对原始地表数据和矿坑数据进行三角剖分得到的三角形网格。