If you have access to OneMine as part of a member benefit, log in through your member association website for a seamless user experience.
|Mobile Roof Supports (MRS) look similar to a longwall shield on crawler tracks. The MRS units offer a safe, productive method of extracting the 40% to 60% product left normally unrecovered in room and pillar mining. The units feature radio control, self-contained power units, crawler track drive, and a 600 ton yield. Cribbing and setting posts in retreat mining has been a necessary burden to production. The MRS reduces this burden. Long blocks of coal can be developed to further reduce move and tram time, thus increasing production. The MRS units have successful safety records. The workers are removed from the immediate fall area, and we feel back injuries have been reduced by the workers not setting posts. While MRS units have been damaged in falls, the other capital equipment has been unharmed. The MRS product line has undergone normal product improvement and evolution. Product evolution is seen in our development of machines for particular mine requirements. Through the continuing development of the MRS, Fletcher presents the coal industry with a safe, productive method of retreat mining with potential to develop new mining methods.|
Additional chapters/articles from the SME-ICGCM book Tenth International Conference on Ground Control in Mining Proceedings (ICGCM) 10th
|Practical Aspects Of Longwall Pillar Design||Assessment Of Underground Structural Design||Load And Convergence Measurements In Longwall Faces And Desi||A Model Of Shield-Strata Interaction And Its Implications Fo||Stability Of Interpanel-Pillar And Deformation Of Gateroad D||Use Of Polymer Grids For Longwall Shield Recovery||Methods Of Controlling Thick And Strong Roof In Longwall Min||Tensioned Point Anchor Resin System Versus Non-Tensioned Ful||Thrust Bolting: A New Innovation In Coal Mine Roof Support||An Alternative To A Manual Torque Check On Roof Bolts||Shear Bond Stresses Along Cable Bolts||An Underground Trial Of Cable Slings For Remedial Support Of||Mobile Roof Support For Retreat Mining||Application Of Time Domain Reflectometry To Ground Control||An Examination Of Energy Calculations Applied To Coal Bump P||Delineation Of Abandoned Workings With An In-Seam Seismic Me||Remote Detection Of Abandoned Mine Workings Using Radio Imag||Effects Of Surface Topography On The Stability Of Coal Mine||Site Characterization For Ultra-Close Multi-Seam Mining||Mining Under Rivers In Fuxin Coal Mines||Use Of Database In Ground Control To Identify Weightings And||Integrating Ground Control And Mine Site Data Through A Geog||Determination Of The Rock Strength From Portable Rock Tester||Mine-Wide Physical Property Trend Identification Using Porta||Subsidence Prediction In Illinois Coal Basin||Determination Of The Stopline Subsidence Profile Of Phalen 2||Evaluation Of Subsidence Parameters For Inclined Seams In UK||Measurement Of Structural Deformation And Tilt During Subsid||Drag Picks - Influence Of Tool Geometry And Angle Of Arrack||Roof Sounding Device - A Loose Rock Detector||Advanced Surveying Method For Measuring Roof Convergence||Geomechanical Substantiation Of Extraction Of Undermined Ore||Relationship Between Floor Rock Stress And Floor Failure||The Influence Of Geomining Parameters Over Stress Distributi||Finite Element Modeling Of Subsidence Induced By Underground||The Structural Response Of A Steel Lattice Transmission Towe|