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|Two existing predictive methods were chosen for evaluation; an influence function (Gals Theory) and a profile function (hyperbolic). These were applied to several field measured subsidence pro¬files over United States coal mines. The effect of homogeneous versus non-homogeneous overburden on surface subsidence is demonstrated and the utilization of Bals Theory as a subsidence predictive method for both types of overburden is examined. The major factor affecting subsidence profile characteristics is the migration of the inflection point toward the centerline of the longwall panel. A computer program was written to aid in the analysis.|
Additional chapters/articles from the SME-ICGCM book Proceedings Of The 1st Annual Conference On Ground Control In Mining
|Stress And Stability In Coal Ribsides And Pillars||Improved Design Of Coal Pillars For U.S. Mining Conditions||Review Of Pillar Design Equations Including The Effects Of C||Abutment Pillar "Notching" Improves Abutment Tunnel Roof Con||The Influence Of Certain Geologic And Geotechnical Factors O||Considerations Of Gas Outbursts In Using Dome Salt Mines For||An Overview Of Bureau Of Mines Ground Control Research||Stability Behaviour Of Coal Mining Tunnels With Different Su||Strata Disturbance Prediction For Mining Beneath Surface Wat||Monitoring For The Evaluation Of The Stability Of Undergroun||Controlled Thrust And Torque Placement Of Mechanical Anchor||Roklok Polyurethane Binder: A Chemical Injection System For||Resupporting High Roof Falls||A New Combination Friction-Suspension Support System Scott||Inorganic Cement Grouted Bolt System||Development Of A Resin Point Anchor||An Engineering Analysis Of "Squeeze" Failure Of Pillars In T||Ground Control In Multiple Seam Mining||Applications Of Reflection Seismics To Mapping Coal Seam Str||The Use Of Geologic Modeling In The Prediction Of Adverse Ro||Design Of Shield Supports For The U.S. Coal Mining Industry||Longwall Mining Of Thin Seams||Support Selection For The Multi-Lift Mining Method||Design And Operation Of Powered And Entry Supports||Evaluation Of Existing Predictive Methods For Mine Subsidenc||A Study Of Longwall Subsidence In The Appalachian Coal Regio||Subsidence Studies In Thick And Steep Coal Seam Mining|