Organization / Society
SME-ICGCM (1801)
Showing: 21 to 30 of 1801 matches for:
Search Criteria
TITLE Research on the Geological Dynamic Conditions and Forecast for Rock Bursts
SUMMARY "Rock burst is one of the most serious dynamic disasters in coal mining. Rock burst prevention involves two difficult tasks: systematically evaluating the occurrence conditions and effectively forecast for rock burst. This paper systematically studies the effects of natural geological dynamic conditions and mining engineering on and forecast for rock burst. It establishes the evaluation method and index system of rock burst geological dynamic conditions and proposes a method of forecasting rock ...
AUTHOR Zhang, Hongwei (primary); Zhu, Feng ; Song, Weihua ; Tang, Guoshui ; Li, Sheng
TITLE Discriminating Mining Induced Seismicity from Natural Tectonic Earthquakes in the Wasatch Plateau Region of Central Utah
SUMMARY "The Wasatch Plateau region of central Utah contains a number of active underground coal mines in an area of well-documented natural seismicity. As a result, there are several hundred seismic events recorded in this region every year that may or may not be attributed directly to mining activity. Previous studies have linked the majority of this seismicity to mining activity through various means, but have not attempted to develop a method for categorizing individual events within a seismicity ca...
AUTHOR Stein, Jared R. (primary); Pankow, Kristine L. ; Koper, Keith D. ; Mccarter, Michael K.
TITLE The Design of Primary Ground Support during Roadway Development Using Empirical Databases
SUMMARY "There have been many design practices utilised within the coal mining industry to arrive at the minimum densities of primary ground support required during roadway development. This paper demonstrates the practical use of empirical databases, and focuses on the main drivers for ground support as demonstrated in conceptual models.Golder Associates’empirical databases used for ground support include a Primary Roof Support Database and a Primary Rib Support Database. Both are based on successful g...
AUTHOR Stone, Ry
TITLE The Science of Empirical Design in Mining Rock Mechanics
SUMMARY "Many problems in rock mechanics are limited by our imperfect knowledgeof the material properties and failure mechanics of rock masses. Mining problems are somewhat unique, however, in that plenty of real world experience is generally available and can be turned into valuable experimental data. Every pillar that is developed, or stope that is mined, represents a full-scale test of a rock mechanics design. By harvesting these data, and then using the appropriate statistical techniques to interpre...
AUTHOR Mark, Christopher
TITLE An Alternative for More Productive Rib Bolting in Underground Mining Applications
SUMMARY "Underground mine rib stability is an ongoing safety issue in all mining applications. Rib-related accidents present at least as many problems as roof-related ground control. Underground coal mine rib safety is continually emphasized as a primary safety concern at every mining operation. The application of rib support materials is increasing as more difficult mining conditions are experienced due to deeper cover, more variable depositional environments, thicker seam heights, and multi-seam minin...
AUTHOR Bryan, Joe E. (primary); McDonnell, John P.
TITLE Development and Implementation of the“Spin to Stall”Resin Bolting System at Anglo Americans Australian Underground Coal Operations
SUMMARY "Longwall mining is by far the most common method of underground coal extraction in Australia. The industry trends and expectations are placing increasing emphasis on the reliability and productivity of these operations. The longwalls are becoming wider and longer while retreat rates are continuously increasing due to significant improvements achieved in longwall equipment reliability and automation. This increased longwall productivity is placing significant emphasis on the reliability of longw...
AUTHOR Emery, Jason (primary); Canbulat, Ismet ; Naylor, John ; Craig, Peter ; Sykes, Andy
TITLE Volumetric Measurement of Rock Movement Using Photogrammetry
SUMMARY "The NIOSH ground control safety research program at Spokane, Washington, is exploring applications of photogrammetry to rock mass and support monitoring. This paper describes two ways photogrammetric techniques are being used. First, photogrammetric data of laboratory testing is being used to correlate energy input and support deformation. This information can be used to infer remaining support toughness after ground deformation events. This technique is also demonstrated in a field application...
AUTHOR Benton, Donovan J. (primary); Iverson, Stephen R. ; Martin, Lewis A. ; Johnson, Jeffrey C. ; Raffaldi, Michael J.
TITLE Analysis of Alternatives for Using Cable Bolts as Primary Support at Two Low-seam Coal Mines
SUMMARY "Cable bolts are sometimes used in low-seam coal mines to provide support in difficult ground conditions. This paper describes cable bolting solutions at two low-seam coal mines in similar ground conditions. Both mines used support systems incorporating cable bolts as part of the primary support system. Two original cable bolt based support systems as well as two modified systems are evaluated to estimate their ability to prevent large roof falls. One of the support systems incorporated passive ...
AUTHOR Esterhuizen, Gabriel S.
TITLE Effect of Geological and Mining Factors on Roof Stability of a Room and Pillar Mine in US
SUMMARY "This paper examines the effect of different geological and mining factors on roof stability in underground coal mines by combining the field observations, laboratory testing, and numerical modeling. Observations at an underground coal mine that uses the room-and-pillar mining method showed several failures of the immediate roof, and is used as a case study. Three-dimensional distinct element analyses were performed to study the intrinsic roof failure mechanisms and to evaluate specifically the ...
AUTHOR Sherizadeh, Taghi (primary); Kulatilake, Pinnaduwa H.S.W.
TITLE The Effect of Discontinuities Characteristics on Coal Mine Stability and Sustainability: A Rock Fall Prediction Approach
SUMMARY "Rock fall related accidents continue to occur in coal mines, although artificial support mechanisms have been used extensively [1]. Roof stability is primarily determined in many underground mines by a limited number of methods that often resort to subjective criteria. It is argued in this paper that stability conditions of mine roof strata, as a key factor in coal mines, must be determined by a survey which proactively investigates fundamental aspects.Failure of rock around the opening happens...
AUTHOR Oraee, Kazam (primary); Oraee, Nikzad ; Goodarzi, Arash ; Khajehpour, Parham