Abstract: Aimed at the unclear management process status of under-well project in coal mine, and according to the principle and method of Petri net and project life cycle, the processes of the whole life cycle of under-well project in coal mine were identified and modeled. Firstly, the whole life cycle process system of under-well project was established; Secondly, on the basis of the logical relationship between each process, using the Visual Object Net++ software to do process modeling for the whole life cycle process, design and planning phase, construction and control phase, evaluation and settlement phase. This study supplies the process model foundation for the development of under-well project information system based on workflow, and has a important role to realize the synergetic management and Informatization management of under-well project in coal mine.

Key words: coal mine, under-well project, whole life cycle, Petri net, process modeling