Abstract:
Against the background of 1201 return airway of Dujiacun coal seam mining 2
# Coal, the large dip angle Soft coal seam roadway that in different section shape and supporting mode stability problem is analyzed. By using the Engineering analogy method, and FLAC3D numerical simulation software, the three cross-section shape and supporting scheme is simulated. The results show that,under the joint form of mesh-anchor + steel supporting, the vertical wall round arched roadway vertical and horizontal deformation smaller than the other two programs were 78% and 23%. the stress distribution more uniform and more suitable for excavation and support in the large inclination soft coal seam roadway, and provides a theoretical basis for practical application.