煤炭科技2023，Vol.44Issue(6)：1-7,11,8.DOI:10.19896/j.cnki.mtkj.2023.06.001
基于Voronoi块体模型的深部断层破碎带巷道大变形机制研究
Research on large deformation mechanism of deep fault fractured zone roadways based on Voronoi block model
摘要
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.关键词
深部破碎巷道/Voronoi块体/离散元法/关键块体/非线性大变形/分步联合支护Key words
deep fractured roadway/Voronoi block/discrete element method/key block/nonlinear large deformation/stepped combined support分类
矿业与冶金引用本文复制引用
李翔,陈自由,栾波,杜多鹏,刘靖毅..基于Voronoi块体模型的深部断层破碎带巷道大变形机制研究[J].煤炭科技,2023,44(6):1-7,11,8.基金项目
国家自然科学基金重点联合基金项目(U22A20234) （U22A20234）
湖北省重点研发计划项目(2020BCB073) （2020BCB073）
