Control mechanism and support optimization of roadway in fractured surrounding rock under the influence of mining activity
CHEN Cheng
LIU Jiliang
LU Shutao
ZHAO Ming
Abstract：In view of the serious breakage of surrounding rock caused by mining in the pedestrian uphill roadway of Ⅱ 5 mining area of Zhuxianzhuang Coal Mine and the serious deformation caused by the in-sufficient bearing capacity of the original support scheme,a joint control optimization scheme is pro-posed by using the control mechanism of broken surrounding rock,including grouting bolt,high-pressure grouting anchor cable,steel mesh,shotcrete and grouting,which improves the cohesion and bearing capacity of roadway surrounding rock and limits the development of plastic area.Combined with field industrial test,the results show that the deformation of surrounding rock is stable after 75 days.The new support scheme effectively controls the deformation of roadway,significantly reduces the deformation speed,and achieves stability in the later period.
Keywords：mining effectsfractured perimeter rockroadway supportcohesionbearing capacity
Publication Date：2025-04-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 7-12 )