Analytical Stress Solution and Numerical Mechanical Behavior of Rock Mass Containing an Opening under Different Confining Stress Conditions

In this study, the triangle interpolation method for calculation of mapping functions plates containing an opening with arbitrary shapes is investigated improved point adjudgment during iterations. Afterwards, four kinds openings typical are considered and them calculated, based on which influence parameters such as iteration time number terms accuracy function discussed. Finally, stress around inverted U-shaped arched under different far-field conditions calculated effect shape lateral pressure coefficient distribution rock mechanical behaviors further analyzed combined discrete element (DEM) numerical simulation. The result shows that stability failure pattern mass correlated opening, affected by shape. existence also greatly reduces enhancing confining specimen.