•Outburst mechanism of tunnelling through coal seams is theoretically and numerically studied.•Outburst hazard is high at the moment of roadway uncovering coal seam from rock.•The higher original stress perpendicular to roadway will increase the hazard significantly.•A typical outburst is triggered by the nearby energy and developed by the distant energy.•Strong-weak coupling structure can efficiently control outburst and is proved by field data.
Tunnelling and Underground Space Technology – Elsevier
Published: Apr 1, 2018
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