Search Documents
Search Again
Search Again
Refine Search
Refine Search
-
Evaluation Of Surface Subsidence Potential Along A Pipeline Due To Abandoned Coal Mine Works
By Thomas L. Vandergrift
With the inevitable expansion of homes, businesses, and infrastructure in coal mining regions, the potential for future subsidence above abandoned mines is of increasing concern. Of particular concern
Jan 1, 2000
-
Considerations Of Gas Outbursts In Using Dome Salt Mines For Storage Of Oil And Nuclear Waste
By M. Ashraf Mahtab
A feature of interest in stability of excavations in domal salt is the phenomenon of gas outbursts which has occurred in five of the six mines in Louisiana salt domes. Gas outbursts are sudden errupti
Jan 1, 1981
-
Geomechanical Criteria of Longwall Face Support Selection at Consol Mines
By D. W. H. Su
This paper describes geomechanical criteria employed by Consol Energy for selecting mine-specific longwall face supports in the past decade. The criteria include immediate and main roof rock character
Jan 1, 2004
-
Utilizing The ?Advance And Relieve? Method To Reduce Horizontal Stress Affects On The Mine Roof, A Case Study (b5b945af-699f-46b0-ae56-a98434baad9f)
By Dennis R. Dolinar
A room and pillar coal operation in central Pennsylvania was experiencing roof cutters and long running roof falls caused by high horizontal stresses. The roof conditions created hazards for the miner
Jan 1, 2000
-
Introducing the New Windows ARMPS-LAM Program
By Keith Heasley, Christopher Newman, Zach Agioutantis
"Previously, in 2013, a laboratory version of the computer code ARMPS-LAM, introduced at the 32""d International Conference of Ground Control in Mining, successfully integrated the laminated overburde
Jan 1, 2016
-
An Analytical Approach to Determine Stress Distribution in Longwall Chain Pillars
By James M. Kramer
This paper introduces an analytical approach for the determination of the vertical stress in the chain pillar system between two adjacent longwall panels. The development of this approach is based on
Jan 1, 1998
-
Identification Of Critical Slope Failure Surfaces With Critical Tension Cracks
The formation of tension cracks in slopes is well known. Analytical studies require the determination of a critical slip surface for any slope and, in doing so, it is necessary to consider an appropri
Jan 1, 1989
-
Comparison of Pillar Strengths Calculated Using Empirical Equations and Finite Elements
By Aarao de Andrade Lima
Mechanical properties typical of coal are used in the comparisons of pillar strengths based on finite elements and the empirical equations of Holland-Gaddy, Salamon-Munro, Obert¬Duvall, and Bieniawski
Jan 1, 1997
-
Influence of joints on the elastic response of a LFUFL stope to FEM mining
By W. G. Pariseau
A new approach to the direct inclusion of the effects of joints and geologic structure in rock mechanics analyses is applied to an elastic analysis of stability of a Lucky Friday undercut and 4111 lon
Jan 1, 1989
-
Evaluation of the Point Load Strength for Soft Rock Classification
By B. (Mamas) Das
A project to evaluate the suitability of point Load strength tests for testing and classifying coal measure rocks for coal mining application was initiated by Canada Centre for Mineral and Energy Tech
Jan 1, 1984
-
Influence Of The Sloping Of Ground Surfaces On Mine Subsidence (165d3ebb-e4c1-4bc8-a5e4-409b4e24155c)
By D. M. Shu
A two-dimensional finite element modelling technique is applied to predict the subsidence movements on a sloping ground surface above a completely mined panel. The modelling is carried out for the sur
Jan 1, 1992
-
New developments with the coal mine roof rating (7c278b2d-cc1e-4949-9bd2-643d1af010e5)
By Chris Mark
The Coal Mine Root Rating (CMRR) was first presented at this Conference nine years ago. Since Its Introduction, the CMRR has been incorporated into many aspects of mine planning. including longwall pi
Jan 1, 2002
-
Changes In Seismic Measurements With Blast Induced Fracturing: A Field Experiment
By Clifford J. Roblee
In this paper, various seismic indicators are evaluated for ability to discern fractures induced into a rock mass by blasting. This is accomplished by presenting results from in situ crosshole seismic
Jan 1, 1989
-
Prediction Of Rock Cutting Performance Using Fracture Mechanics Principles - A Review (0b1a12ed-9606-4d46-b68d-eea006d52e76)
By Gexin Sun
This paper overviews the recent research progress in predicting cutting performance using fracture mechanics principles. It is emphasised that rock fragmentation due to cutting is mainly a process of
Jan 1, 1992
-
Load And Deflection Response Of Ventilation Stoppings To Longwall Abutment Loading - A Case Study (49571726-6a2d-49b8-8ef0-957c4421195c)
By David C. Oyler
Few studies have specifically measured and documented the large-scale loading behavior and durability of ventilation stoppings to mining induced movements, particularly from longwalls. Ventilation sto
Jan 1, 2001
-
Multiple-Seam Mining - A State-Of-The-Art Review
By Chris Haycocks
The relevant literature concerning ground control, mine planning and reserve conservation in multi- seam mining is reviewed. Factors affecting interaction, interaction mechanisms, and design guideline
Jan 1, 1990
-
Longwall Production, Maintenance, And Roof Control System
By W. Mark Hart
The current Automatic Data Acquisition system developed by some support manufacturers make it possible to monitor and record changes in leg pressure, DA RAM stroke in every shield and shearer position
Jan 1, 1994
-
Strata Control Advances At Jim Walter Resources, Mining Division
By Eddie Martin
Jim Walter Resources, Mining Division, employs the retreat longwall mining system as the primary method of coal production. The strata control aspects of developing and maintaining roadways for retrea
Jan 1, 1988
-
Mine Planning For Longwall And Pillar Retreat Panels Subject To Seam Interaction Effects
By Thomas L. Vandergrift
Multiple-scam mining is becoming more common in the United States, especially in the East, where primary reserves arc being depleted, forcing mining companies to develop secondary seams, Although mine
Jan 1, 2000
-
Study of Ground Movement Over a Longwall Mine
By A. W. Khair
This paper presents an analysis of ground movements recorded from longwall operations in the Northern Appalachian region in West Virginia. The site chosen for the investigation was selected due to var
Jan 1, 1987