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|Multiple seam mining and its associated problems are very serious in Southern West Virginia where poor planning or lack of knowledge in seam interaction often results in complete loss of coal properties. Several measures have been proposed to alleviate the interaction prob¬lems under various multiple seam conditions, but few of them are spec¬ific in terms of mining plan. Two parallel approaches are adopted for this paper. One is field investigation which consists mainly of mine site visits and gathering of data. The other is the two-dimensional finite element simulation of mine workings using the data gathered as input. Two typical cases which represent the past and present multi¬ple seam mining practice in West Virginia were investigated. Much attention is focused on the interaction problems experienced and the important parameters controlling interaction. Several key parameters controlling interaction in multiple seam mining were analyzed. Proper mining plans, by which the interaction problems can be minimized, are proposed for the individual cases after a better understanding of the interaction mechanism was realized through finite element analyses.|
Additional chapters/articles from the SME-ICGCM book Rock Mechanics in Productivity and Protection ? Proceedings Twenty five Symposium on Rock Mechanics
|Mining-Induced Stress Measurement With Hydraulic Borerole Pr||Instrumentation and Monitoring For Pillar Extraction in a De||Reinforcement of Large Pillars by Bolting||Pressure Measurements in the Gob||Determination Of Solution Cavern Spacing In Deep Salt Deposi||Leached Salt Cavern Design Using a Fracture Criterion for Ro||Numerical Modeling Of "Stiff" Backfill in the Coeur D'A||Stress Control Method Applied to Stabilization of Undergroun||Optimun Mining Plan for Multiple Seam Mining||An Investigation of the Causes of Cutter Roof Failure in a C||Methods of Designing Mechanical Roof Bolting in Horizontally||Rock Bursts In Human Collieries||Constraint - The Missing Variable in the Coal Burst Problem||Prediction of Inter-Strata Movements Above Longwall Faces||Controlled Load Development At Longwall Coalfaces||Technique To Measure Resultant Load Vector On Shield Support||An Improved Technique of In-Situ Measurement Of Fracture Zo||Comprehensive Observation And Research On The Mechanism Of W||Displacement Discontinuity Method For Three-Dimensional Stre||Recent Developments In Subsidence Prediction And Control For||A Method For Assessing The Potential Of Mine Subsidence At A||Ground Movements Associated With Pillar Extraction Coal Mini||Application Of Time Domain Reflectometry To Mining||Proposed Criteria For Subsidence Damage To Buildings||Stability of Slopes in Discontinuously Jointed Rock||A Case History of the Effect of Mine Subsidence on a Concret||Microcomputer Simulation of Rock Blasting to Predict Fragmen||Probabilistic Analysis of Blasting Impact on Open Pit Stabil|