Abstract: The key techniques for realizing a true 3D mining method design in building a digital mine are studied and the significance of true 3D mining method design to the construction of a digital mine is analyzed. The true 3D mining method design is realized by means of DIMINE software. It is indicated that it is not very necessary but fully feasible to apply the visualized true 3D technology in mining method design, which has broken through the traditional design modes and methods, and can greatly raise the efficiency of mining method design and make the design more intuitive, vivid and understandable. It will have a wide application prospect.

Key words: Digital mine, Mining method design, 3D visualization, Development and cutting for mining