DOI: 10.11799/ce201612014
Research on stability and control of large section roadway in extra-thick coal seam
XU Zhu-he
YANG Yu-liang
LI Yong-ming
Abstract：In order to alleviate the serious deformation and support difficulty of large section roadway in extra-thick coal seam, the paper studied the influence of top coal thickness and roadway width on stability of surrounding rock with FLAC3D software; proposed a “two-stage controlling system”, namely “BS bolts” cooperative control system based on failure features of surrounding rock; analyzed the stability based on mechanical model of roadway roof. Field test results showed that roof-to-floor relative convergence was 112mm, and two-side relative convergence was 87mm, after application of the two-stage controlling system. The surrounding rock of roadway was effectively controlled.
Keywords：thick top coallarge section coal roadwaysurrounding rock failuretwo-stage controlling system
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 42-45 )