Abstract: The paper expounds the 3D reconstruction of complex contours based on drill data，based on some exiting problems on the calculation of centroid，the identical manipulation toward directions of contours and embranchment and some crucial techniques such as how finds relatively optimized 3D surfaces，the detailed solution is put forward，which presents final experimented data and validates the feasibility of this 3D modeling method.

摘要： 阐述了基于钻孔数据的复杂轮廓线的三维重构，针对三维重构中存在的轮廓线的质心计算、对轮廓线方向性一致操作、分支问题以及如何得到较优的三维曲面等关键技术，提出具体的解决方法，并给出了最终的试验数据，验证了此三维建模方法的可行性。