Study on Mining Induced Stress Distribution Law of Fault Occurred in Island Face
Abstract：Based on an inclined 10° fault tip occurred in a coal mining process of a coal pillar coal mining face in seam island, in order to solve the coal wall spalling, roof falling and other problems of the coal mining face, the paper studied the distribution features of the secondary stress field in front of the coal mining face affected to the coal mining operation. The extreme balance theory and the numerical calculation were applied to analyze the stress distribution law and the surrounding rock deformation features during the mining process of the coal mining face. The results showed that the concentrated stress of the powered supports in the coal mining face were mainly distribu- ted in the middle and upward sections and low end of the coal mining face. The mining turbulence could cause a fault activation. And thus the vertical stress of the coal miming face near the fault would be reduced and the horizontal stress would be increased. The monito- ring and measuring results showed that with the coal miming face continuously advanced forward, the pilot support pressure peak would be always at about 5 m in front of the coal mining face wall.
Keywords：faultisland coal pillarstress concentrationsecondary stressrock deformation
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 13-16 )