Optimization Research on Anchor Rod Support Technology for Thick Coal Seam Mining Roadway
In order to solve the support problem of thick coal seam mining roadway in a certain mining face,the FLAC3D numerical simulation method was used to improve the design of anchor rod support scheme.After improvement,a support form combining high-strength anchor rods,metal mesh,steel strips,and anchor cables will be used.The on-site experimental results show that after adopting the modified machine support form,the maximum displacement of the top plate is 70 mm,and the maximum displacement of the side is 80 mm,which is an increase of 2.4%and 6%compared to the original plan,respectively.The axial force of the anchor rod and anchor cable is increased by more than three times.The improved anchor rod support scheme has stronger stability,higher support efficiency,and lower support costs compared to the original scheme.
thick coal seammining roadwayanchor rod supportoptimization
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