Abstract: In order to analyze the underground pressure law induced by coal extraction under fault of 1111(1)fully-mechanized working face in Zhuji east mine,based on the RFPA2D-strata software,the influence of abutment pressure originated by the working face advanced on hanging wall and foot wall of fault are conducted camparative simulation analysis.The results show that under the fault condition,no matter from the top or from the footwall,the peak value of stress in front of the working face is produced,so,the impact hazard is appeared when the working face is close to the fault;the stress concentration factor and impact hazard when the working face advanced on foot wall of fault are higher than the ones induced by the working face advanced on hanging wall of fault.

Key words: Fault, RFPA2D-Strata, Abutment pressure, Numerical simulation