DOI: 10.11799/ce201709017
Analysis on deformation and failure characteristics of surrounding rock in drive-bolting separated roadway of Zhangcun Coal Mine
MENG Xiu-feng
ZHAO Hong-liang
Abstract：In order to solve the support difficulty in drive-bolting integration process, and understand the deformation characteristics of roadway surrounding rock in traditional separated drive-bolting process, we applied numerical simulation to analyze the surrounding rock stress and deformation -failure characteristics during driving along the roof and floor, combining with the geological conditions of west dip air return way in Zhangcun Coal Mine. The results showed that, the most intense deformation range after roadway driving was within 10m in the rear of driving face, the deformation tend to be moderate beyond 10m range;the roof subsidence reduced with the increase of bolts, and according to top-coal and roof conditions, 4 bolt each row would be enough to prevent roof separation at the beginning of roadway driving.
Keywords：drive- bolting separated roadwaydeformation characteristics of surrounding rockvertical stress fieldhorizontal stress field
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 64-66,71 )