Simulation Study on Relationship Between Ground Stress and Gas Pressure Gradient of Tectonic Outburst Seam
HUANG Xian hua
XU Ji yuan
YANG Cheng yi
ZHU Hong qing
Abstract：The gas pressure gradient variation law and the horizontal ground stress distribution law of the tectonic outburst seam would be the major factor affected to the coal and gas outburst. A quantitative calculation model of the seam gas pressure gradient and horizontal ground stress was established.Taking the regional tectonic outburst seam near No. 236-80 north cross-cut in Tanjiachong Mine as a study object,the FLAC simulation result showed that the seam failure was serious in the region with horizontal ground stress approached to zero. The calculation showed that when the ground stress was about 3 MPa,the gas pressure gradient in the tectonic seam would have a sudden change.When the horizontal ground stress was over 3 MPa,the gas pressure gradient would rapidly increase in the two regions of 0~5 m and 42~62 m along the strike direction of the seam physical model.
Keywords：tectonic outburst seamhorizontal ground stressgas pressure gradientcoal and gas outburst
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 65-67,71 )