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|A 125 foot high steel lattice frame tower supporting a 500 kV EHV transmission line and located over the gateroads of a longwall mining operation was subjected to ground movements from the mining of adjacent longwall panels. Under an agreement with the owner of the powerline, the mine operator was required to minimize mining impacts on the transmission line. In view of this requirement, the mine operator prepared a forecast of the expected subsidence ground movements prior to the onset of mining. These forecasts, in conjunction with finite element analyses of the tower superstructure under the imposed ground movements and wind loadings. suggested that the structural capacity of the tower would probably be diminished little, if at all, by mining. Ground movements determined by survey during mining of the two longwall panels were found to be in close agreement with predictions. Strains measured in selected tower members during mining generally agreed with values calculated by the finite element analyses. The study confirmed a methodology to predict subsidence and to assess its effects on steel lattice transmission towers.|
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|