Research on Mechanical Behavior of Surrounding Rock in Steeply Dipping Seam Mining
MA Jinkui
LIU Jun
YUE Gaowei
TAN Ronghui
Abstract： To counter the movement and failure characteristics of overburden rock in steeply dipping coal face,the distribution law of its abutment pressure and its influence on the mining,this paper took a fully mechanized longwall face with large dip angle along strike as a project background, and made a study on the failure mechanism of roof rock stratum in the mining process of steeply dipping seam,the maximum stress concentration coefficient in front of the coal wall of the steeply dipping seam and in the direction of gob,the plastic zone scope of the abutment pressure,the roof weighing step,the convergence between roof and floor and so on through the site measurement,theoretical model building and numerical simulation. Based on the ground behaviors of the steeply dipping seam mining,this paper also put forward the control technology for support stability in the working face,the anti-slip of equipment and the stope surrounding rock in the period of roof weighing. This study has a practice meaning for reducing coal mining accidents and improving the safety in steeply dipping seam mining.
Keywords：steeply dipping seammechanical behaviorstress-strainsurrounding rock control
Publication Date：2013-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 27-30 )