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Geomechanic Monitoring And Distributed Information Systems
By G. I. Gritsko
In this paper we consider the elements of a distributed information geomechanic monitoring system which is used in computerized mine planning and mining operations control. The automated system is a t
Jan 1, 1996
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A Hydrogeomechanical Study Of Overburden Aquifer Response To Longwall Mining
By G. J. Hasenfus
This paper presents the results of an extensive hydrological and geomechanical monitoring program which Gas conducted at a longwall coal mine in W. Va. The field program included monitoring of groundw
Jan 1, 1988
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Finite element analysis and comparison of shaly mine roof support systems
By K. F. Unrug
In the paper a numerical modeling method is used for evaluation of a roof support system, which is commonly used in the US coal industry. The effectiveness of mechanical roof bolting with or without,
Jan 1, 1989
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A Method for Sizing Longwall Pillars Based on Field Measurements
By Christopher Mark
A new method for the design of longwall pillars, called "Analysis of Longwall Pillar Stability" (ALPS), is described. The method is the final result of a research program that included two major field
Jan 1, 1987
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The Effects of Reduced Annulus in Roof Bolting Performance
By Stephen Tadolini
The annulus thickness, for bolts anchored with resin, effects the systems final performance. Recent developments in the manufacturing process of these support systems, coupled with improved resin char
Jan 1, 1998
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A Case Study of Longwall Roof-Supports Interaction
By Y. H. Wang
During the last two decades many research projects were conducted to study the load requirements for the powered supported longwall faces (1-6). Significant results had been achieved by these research
Jan 1, 1986
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Overburden Subsidence Characteristics When Mining in Weak Rocks and Subject to Special Mining Conditions
By Wenquan Zhang
Based on the mining and geological conditions of Wadong Mine, Longkou City, Shandong Province, China, a viscoelastic model with proper creep parameters was established. The 3-D ANSYS was used to simul
Jan 1, 2006
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Evaluation of a Multiple Seam Interaction Coal Pillar Bump
By Michael Gauna
An evaluation and analysis of a coal pillar bump in a West Virginia mine indicated that the pillar bump occurred because of the unique combination of controlling factors. The pillar?s development sta
Jan 1, 2008
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Complex Seismic Trace Attributes In Coal Exploration
By Lawrence M. Gochioco
The interpretation of coal seismic data requires a certain precision and accuracy to make the results more reliable. The signature of the seismic wavelet provides a host of valuable geologic informati
Jan 1, 1989
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An Evaluation Of Strata Behavior And Tailgate Support Performance At Eagle Nest Mine
By T. P. Mucho
Strata behavior and support performance were evaluated in a longwall tailgate test area at the Eagle Nest Mine near Van, WV. The mine operates in the Eagle coalbed which ranges in height from 4 to 6 f
Jan 1, 1996
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Regional Two-Seam Stress Analyses At The Deer Creek Mine (58f624e3-fdec-4f72-b0ef-8ec1e65d9bd2)
By Hamid Maleki
A geotechnical monitoring program has been implemented at Energy West Mining Company for enhancing site-specific evaluation of longwall stress conditions. This program consists of underground measure
Jan 1, 2009
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Dynamic rock anchors
By James J. Scott
Dynamic rock anchors are interior fixtures developed by the author which promise to be a revolutionary development in the field of ground control. The fixtures are designed to be placed in the ground
Jan 1, 1989
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High Horizontal Movements In Longwall Gate Roads Controlled By Cable Support Systems
By Dennis R. Dolinar
Controlling coal mine roofs subjected to high-horizontal stress conditions has always been difficult and uncertain. Traditional supports such as wooden cribs and posts, concrete donut cribs, and stand
Jan 1, 1996
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German-Chinese Cooperation in the Field of Mining Subsidence Engineering
By Axel Preusse
Mining subsidence plays an increasing important role in the Chinese hard coal mining. Reasons for this are a substantial rise of production during the last decade, a dense settlement in many mining
Jan 1, 2007
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Is Mining Coal at a 900M Below Surface at the Xuandong Coal Mine in China Challenging or Just Interesting Rock Mechanics?
By Wouter Hartman
Xuandong Coal Mine is mining coal in one of the most challenging underground environments in the world. This work has found that it is not only challenging but it also has the composition for some int
Jan 1, 2012
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A Mine Evaluation Protocol Using Applied Rock Mechanics Techniques
By Gary B. Petersen
The author has developed a seven-step process called the Applied Rock Mechanics (ARM) Protocol that the author has used to solve numerous roof stability problems in mines throughout North America sinc
Jan 1, 2012
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Cementitious Seal/Rock Interface Under Hydrostatic And Dynamic Loadings (28th International Conference on Ground Control in Mining)
By Khaled Morsy
Cementitious seals are made of foamed cements with strength ranging from 100 to 600 psi. These cementitious seals are usually used at locations where the seal will be subjected to some convergence, as
Jan 1, 2009
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Regularities Of Rock Pressure Manifestations In Longwalls In Terms Of The Theory Of Plates And Limit Equilibrium
By V. M. Shick
With gentle bedding within the zone of support pressure the delamination in roof rocks may occur only on those stratification planes where cohesiveness of rock is close to zero. Unlike this, at dip an
Jan 1, 1996
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Correlation Between Unconfined Compressive And Point Load Strengths For Appalachian Rocks
By Luis E. Vallejo
The strength measured by the uniaxial compression test is a parameter that is widely used for the engineering classification of rocks. Sedimentary rocks such as shales, however, are difficult to evalu
Jan 1, 1989
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Characteristics of Seismic Field Generated by Bed Separation and Application Seismic Technique for Exploration of Bed Separation and Grouting Research
By Jiulong Cheng
Underground coal mining causes overburden deformation and failure, one major form of which is bed separation in the overburden. Surface subsidence can be controlled by injecting grout into the bed sep
Jan 1, 2006