Appraisal And Application Study On Influence Factors Of Coal Roadway Surrounding Rock Stability In Yanzhou Mining Area

Based on coal roadway basic situation diagnosis in Yanzhou mining area, comprehensively determined coal roadway surrounding rock stability influence factor characteristic parameters in Yanzhou mining area.Take surrounding rock deformation amount as coal roadway surrounding rock stability weight standard, the qualitatively analysis engineering geology factor, the mining technology factor and the strata behavior factor to coal roadway surrounding rock stability influence. Carries on the appraisal analysis with analytic hierarchy process to each influence factor of coal roadway surrounding rock stability, obtains the influence power value, and carries on the arrangement to each influence factor, determining roadway depth, surrounding rock intensity,coal pillar width and the field stress is leadership factor of coal roadway surrounding rock stability in Yanzhou mining area.And based on surrounding rock deformation amount,draws the similar conclusion with numerical simulation method, this research conclusion provides the important reference for the surrounding rock classification.In the full use of investigation data, with principal component analysis,obtains factors can comprehensively reflect coal roadway surrounding rock stability, which is surrounding rock intensity, strata behavior factor, roadway depth, surrounding rock thickness and coal pillar width,and chooses single axle compression strength of immediate roof, immediate floor,coal seam, roadway depth, immediate roof first caving pace,basic roof first caving pace,ratio of immediate roof thickness and mining height,coal pillar width as forecast parameter of surrounding rock deformation ratio.Obtains the forecast equation with multiple liner regression.,And establishes the forecast procedure with VB6.0,after the examination, forecast effect is very good, which can provide the reference for the scene roadway support design.Finally simply introduces principle and successful application situation of coal roadway surrounding rock stability classification system in Yanzhou mining area.