Coupling Analysis Of Bearing Structure And Rational Control In Deep Soft Rock Roadway

The characteristics of the soft rock roadway in deep soft rock are characterized by large deformation,large ground pressure and difficult support.Deep roadway is mainly due to the mechanical characteristics of surrounding rock and support coupling caused,very easy to start from a position,quickly spread to the whole support system,causing it to lose stability.Therefore,it is of great practical significance to study the coupling characteristics of deep soft rock roadway.Based on the deep soft rock roadway,the establishment of the support structure and the mechanical properties of the rock bearing structure model,using the elastic-plastic theory,the surrounding rock in the bearing zone,within the scope of the plastic zone range of stress and displacement expressions.The structure of the analysis,based on position and bearing parameters of surrounding rock on the influence of surrounding rock and support strength and structural parameters.From the macroscopic angle to the surrounding rock bearing structure and support bearing in stiffness,strength and structure of the coupling relationship between structure analysis.In the aspect of strength,the supporting force and residual strength play an important role in the coupling of the bearing capacity of surrounding rock,and the two reasonable supporting time is determined.In the surrounding rock and support stiffness,to support the anchor,anchor and grouting technology analysis on surrounding rock strength and confining pressure,stress state analysis,make the rock structure and coupling stiffness of the structure,to reduce surrounding rock expansion and increase its own strength and bearing the effect of ability.Based on the FLAC3D numerical simulation technology,and combining with the example of the Shimen mining area in the third mining area of Luling coal mine,the results of stress,displacement and plasticity are analyzed.Through in-depth analysis,the practical significance of coupling is verified.Combined with the actual observation on the spot,the correctness of the research is verified,which has important guiding significance to engineering practice.