Design and optimization of roadway support parameters for coal roof in Tangshan mine
ZOU Guanghua
ZHANG Jinbiao
XIN Chubing
FAN Qingzheng
YANG Jiannan
Abstract：In order to study the deformation characteristics of the surrounding rock of the roadway in the deep coal roof supporting coal,taking the 0293 working face of Tangshan Mine as the background,the failure depth of the roof of the surrounding rock of the roadway and the two gangs is analyzed based on the Platts arch theo-ry,and according to the occurrence conditions of the working face,the FLAC3D software is used to simulate the two support methods of scaffolding and anchoring and compared,and the best support form is obtained as＂an-chor+anchor cable＂.Seven bolt support schemes with different parameters are set,and the optimal scheme is obtained by further simulation and comparison.The results show that,theoretically,the failure depth of the roof of the roadway of the 0293 working face is 3.03 m,and the failure depth of the two sides of the roadway is 2.81 m;the coal body of the surrounding rock of the roadway of the coal roof of Tangshan Mine is soft,and the con-trol of the deformation of the surrounding rock of the roadway is obviously better than that of the shed support;the optimal roadway support scheme of the coal roof is determined to be as follows:the distance between the top anchors is 700mm×700mm,the distance between the top anchor cables is 1400mm×1400mm,3 anchor ca-bles,and the anchor rods are 700mm×700mm,4500mm with anchor cable,2 in each row,the control effect of the deformation of the surrounding rock of the roadway is the best.
Keywords：supporting coal roof roadwayPlatts arch theorynumerical simulationanchor rod supportcontrol of surrounding rock deformation
Publication Date：2024-12-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 19-25 )