An Examination Of Energy Calculations Applied To Coal Bump Prediction

Heasley, Keith A.
Organization: International Conference on Ground Control in Mining
Pages: 8
Publication Date: Jan 1, 1990
Pillar recovery in deep coal mines with competent roof and floor can concentrate stresses and generate hazardous bumps. Actual calculation of the geologic strain energy released in association with these coal bumps has been rare, although energy release values have been utilized successfully for indicating burst potential in numerous hard- rock mines. This paper advances the current knowledge of energy release calculations as applied to coal bumps through an extensive analysis of an actual bump occurrence. The U.S.B.M, displacement- discontinuity code, MULSIM/NL, is used to produce a numerical model which generates stress, displacements and energy values associated with a pillar retreat section. This model is calibrated with actual field data, and then dissipated energy values from the model are examined as to their suit- ability for indicating bump potential. Ultimately, it is determined that prudent application of dissipated energy calculations can be used as a tool to investigate the coal bump potential of a mining plan or cut sequence.
Full Article Download:
(2390 kb)


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