DOI: 10.11799/ce201709009
Study on reasonable width of narrow coal pillar for gob-side entry driving toward mining
MENG Hai-dong
TIAN Rui
XU Yan-jun
Abstract：Based on the 0913 return air way tunneling project of Qipanjing Coal Mine, we applied theoretical calculation and numerical simulation to study the reasonable width of narrow coal pillar for gob - side entry driving. First, we calculated the reasonable width of narrow coal pillar with the limit equilibrium theory, and the result is 5. 08m;then, analyzed roadway surrounding rock deformation under different width of coal pillar using FLAC3D numerical simulation. It result showed that, the reasonable width of narrow coal pillar was 5 ~6m. Finally, 5m narrow coal pillar was applied considering the construction management.
Keywords：roadway in gob drivingnarrow coal pillarreasonable widthnumerical simulation
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( 36-39 )