Abstract: Visualization in scientific computing is an important content in digital mine and is a new research orientation rising in recent years. In mining field, three-dimensional wireframe model is widely used presently to express the geometric characteristics and occurrence status of geological entities and the modeling methods are different depending on the types and formation causes of geological entities. After the description of the basic principles of modeling, the paper, in light of the geological entities of different types, the paper uses irregular triangulation structure and linear octree coding, in combination with a real case, to establish the landform surface model, orebody wireframe model and tunneling engineering model of the mine, which can well reflect the real form of the geological entities and play an important role in guiding the mining production.

Key words: Visualization, Wireframe model, Irregular triangulation structure, Linear octree