Research on buckling failure mechanism of U type steel support loaded deviating longitudinally
Classified the invalid support with its mechanism and manifestation,the management measures were put forward.The buckling failure cannot be explained reasonably with the 2D Model,however,which occurs widespread in one coal mine of Huainan Group.A new deviating longitudinal 3D model
was preliminarily analyzed.By ANSYS 10.0,we get appealing simulation results on the mechanism,stress distribution,and load magnitude in the partial and integral buckling failure.The studies show that appropriate dimensional roofrock’s brute force on pinnas is an precondition of the failure.Further,the
deviating longitudinal load plays an accelerating deformation role on the transformation,which should be paied more attention to in deep and cracked roadway support design.
Keywords: ANSYS finite element; U type steel support; buckling failure; deviating longitudinal load
Document Type: Research Article
Publication date: 15 October 2011
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