Research On Roadway Stability Evaluation And Repair Technology Under The Influence Of Many Factors

Coal mine roadway stability evaluation is combining the scientific methods withexperience method for coal mine safety status make evaluation,quantitatde or qualitatdedescription possible risk factors of roadway,it is help for decision makers to find and eliminatethe accident potential of the system,to improve coal mine safety management level and ensurethe safety production of the coal mine has important significance.The transportation roadway,subsidirary transportation,outside of the ventilation roadwayand inside of the ventilation roadway support of S1210Ningtiaota Coal Mine working faceunder various factors(One is the roadway finish time is long;Two is the roof water inrushcaused the roadway to flooded,Bolting system were immersed for a long time, affected theperformance of bolt support;Three is encountered various mechanical equipment andpersonnel destroyed in use process),caused the problems of supporting system,be badly inneed of its stability evaluation.In this paper,research on the supporting of the four roadwaythrough on-site visit observation,drawing test, drilling peep, geological radar detectionmethod,and its stability is evaluated scientific. Aiming at the current problems oftunnel,proposed repair and reinforcement scheme,and analyzed effect of the repair project usefinite difference software FLAC3D, to provide the reference for the application of theroadway reinforcement technology.In this paper, the S1210face roadway stability of the slot evaluation method is simple,economic and feasible,it provides reference basis for the roadway stability of other miningarea.Repair reinforcement scheme design is clear purpose and convenient construction,for thesimilar mine repair reinforcement provides reference.