Abstract: Tailings reservoir is a major hazard source for mining enterprises.Its safe operation status is related to the normal operation of downstream enterprises and the protection of surrounding ecological environment.In order to control the safe operation of tailings reservoir quickly,it is necessary to monitor the changes of dam body regularly and analyze the latest trends.Based on 3D mine software,a three-dimensional model of the tailings reservoir of a mine is established,so as to simulate the actual situation of dam body change analysis and comparison.The application results is good,the 3DMine modeling technique is help for guiding the safe operation of the dam body of tailings reservoir of the mine.

Key words: Tailings reservoir, 3DMine software, 3D modeling