Research on large deformation mechanism of deep fault fractured zone roadways based on Voronoi block model
LI Xiang
CHEN Zi-you
LUAN Bo
DU Duo-peng
LIU Jing-yi
Abstract：By using the Voronoi algorithm to generate Voronoi blocks and utilizing the UDEC discrete element operation software sys-tem,the deformation and failure pathways and nonlinear large deformation mechanisms of deep fractured surrounding rock roadways were deeply explored,in order to obtain more accurate results.Research has found that after roadway excavation,the surrounding rock gradu-ally deforms and fails,and the stress in the failure area is almost zero.There are tension failure zones at the bottom and bottom plates.The movement of local key blocks can lead to nonlinear deformation and instability failure of the roadway.Based on this,a stepped com-bined support method is applied to control the deformation of the fractured surrounding rock in the-848 m west wing conveyor roadway of a certain mine in the Huainan mining area.Numerical simulation and on-site monitoring indicate that this scheme can effectively con-trol this process.
Keywords：deep fractured roadwayVoronoi blockdiscrete element methodkey blocknonlinear large deformationstepped combined support
Publication Date：2023-12-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 1-7,11 )