Taking the trapezoidal crossheading roadway in 11223 working face of A Coal Mine as a study case,a technical scheme for supporting the crossheading roadway of the coal mine was introduced.On the basis of the original roadway support scheme,three support optimization schemes were introduced.With the help of ABAQUS numerical simulation software,the three support optimization schemes were compared and analyzed from the three angles of displacement distribution,stress distribution and plastic zone distribution according to the geological conditions of trapezoidal roadway.After the optimal support optimization scheme was obtained,the optimization scheme was applied to engineering practice,and it is confirmed that the optimal optimization scheme can meet the support requirements of trapezoidal roadway.
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