Abstract：In order to study water inrush risk of faults during exploitation in coal mine, the main water inrush factors of water pressure, fault fall and obliquity, and mine pressure were studied, taking F29 fault as an example. Furthermore, the simulation of FLAC3 Dwas carried out by the mathematical model for the forming processes of water inrush channels. It drew the conclusion that F29 fault has partial water inrush risk. It is useful for the safe work passing faults in a mining zone.

Keyword：II coal seam;fault;water inrush;simulation of FLAC3D;