The New Two-Dimension LaModel Program

Akinkugbe, Olayemi
Organization: International Conference on Ground Control in Mining
Pages: 8
Publication Date: Jan 1, 2004
As coal production in the United States continues to increase, the availability of unexploited or virgin fields continue to diminish. As a result, mine operators are forced to mine in unfavorable or multiple seam conditions. The safe, productive exploitation of coal in multiple-scam conditions requires specific design technology. At present, there are two general design approaches that the mining engineer can use to analyze the multiple-seam problem in question, either simple empirical relationships or complex numerical models. Often, the empirical approaches are too general for the specific problem and the numerical models require too much time and expertise for the practicing engineer. This paper introduces a new computer program, Lam2D, designed specifically to enhance multiple seam mining operation by quickly and easily calculating, stress, displacement, subsidence, horizontal strain and safety factors associated with multiple seam mining situations. The program implements a simplified, two-dimensional boundary-element method in order to model the complex multiple-seam stress and displacement interactions. Most importantly, the program is greatly simplified by incorporating automatic overburden, interburden, coal and gob property generation thereby reducing typical modeling and solution time to a few minutes.
Full Article Download:
(2132 kb)


Additional chapters/articles from the SME-ICGCM book 23rd International Conference on Ground Control in Mining (ICGCM) 23rd

Geomechanical Criteria of Longwall Face Support Selection at
Rock Fracture, Caving and Interaction of Face Supports Under
Effect of the Approaching Longwall Faces on Barrier and Entr
Computer Simulation of Ground Behaviour and Rock Bolt Intera
lnterpanel Barriers for Deep Western U.S. Longwall Mining
Application of Yieldable and Cuttable Pump Crib in Longwall
Field Testing of a Real Time Roof Mapping Drilling Display S
Problems in "Void" Detection in Coal Mine Water Hazards
Violent Coal Pillar Collapse -A Case Study
Stooping Low Safety Factor Pillars at Goedehoop Colliery - 1
Laboratory Strength Testing of Coal from Selected Illinois S
Downhole Overcoring Stress Measurement at a Western Undergro
Effect of In Situ Stresses on the Stability of Coal Mine Dev
SOMA: A New Method to Calculate the Operative Stress Field:
Numerical Modeling for Increased Understanding of the Behavi
Evaluation of Rockburst Hazard from Core Testing
Investigation of Electromagnetic Emissions in a Deep Undergr
Development and Application of Geotechnical and Rockmechanic
Laboratory Testing of Rib Straps
The New Two-Dimension LaModel Program
Risk Assessment: Multiseam - Single Seam Mining
A Method To Determine Expander Spacing For Steel Pipelines I
A Case Study Of Abandoned Mine Subsidence At Dominion, Nova
Spatial Trends In Rock Strength - Can They Be Determined Fro
Development And Demonstration Of An Alternate Mining Geometr
Evaluation Of Polyurethane Injection For Beltway Roof Stabil
Application Of Ground Penetrating Radar To Evaluate The Exte
A Risk Assessment Tool For Open Cast Mining In South Africa
Analysis Of Practical Ground Control Issues In Highwall Mini
Preventing Falls Of Ground In Coal Mines With Exceptionally
Geo-Mechanical Property And Failures Of Weak Roof Shales In
Eclipse System Bolting In The Illinois Basin
Variation In The Load Transfer Of Fully Encapsulated Rockbol
Bolt Load Changes During Initial Face Advance And Cross-Cut
Coal Mine Primary Support Selection: Tension Versus Non Tens
Improving Stope Support At Modikwa Platinum Mine
3D FEM Simulation For Fully Grouted Bolts
An Investigation Into The Effectiveness Of Support Systems C
Hydraulic Prestressing Units: An Innovation In Roof Support
Improving Roof Truss Performance
Coal Combustion Byproducts-Based Artificial Mine Supports -
The Influence Of Horizontal Stress On Pillar Design And Mine
Investigation Of Pillar-Roof Contact Failure In Northern App
Mapping Hazards With Microseismic Technology To Anticipate R
Practical Detection Of Underground Mine Roof Failure
Heat-Imaging Experimental Study Of Reducing Local Gas Accumu
Microcirculation Theory Analysis Of Spontaneous Combustion O