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Strata Control Investigations During Fully Mechanized Coal Pillar Extraction in Indian Coalfield
By Rajendra Singh
Considering the importance of a fully mechanized depillaring operation, the Indian coal mining industry has introduced a number of such depillaring operations at depths of cover ranging from 60 m to 3
Jan 1, 2014
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Application of Laser Scanning for Rock Mass Characterization and Discrete Fracture Network Generation in an Underground Limestone Mine
By Juan J. Monsalve, Nino Ripepi, Richard Bishop, Jon Baggett
"Terrestrial laser scanning (TLS) is a useful technology for rock mass characterization. A laser scanner produces a massive point cloud of a scanned area, such as an exposed rock surface in an undergr
Jan 1, 2018
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Field Measurements of Overburden Strata Deformation Response to Longwall Mining
By Xinzhi (Thomas) Du
"In order to monitor the overburden strata deformation over a longwall mining area in the Pittsburgh Coal Seam, three boreholes were drilled across the longwall panel. Each borehole employed multiple-
Jan 1, 2018
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Theoretical Analysis and Field Application of Solid Backfilling Method for Preventing Hard–Roof–Induced Rock Bursts
By Nan Zhou, Jixiong Zhang, Qiang Zhang
"Mining activities under hard roof could easily induce rock burst. Based on the geological conditions of widespread hard roof in China, this paper discusses the type, mechanism of occurrence and preve
Jan 1, 2015
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Numerical Model Calibration for Simulating Coal Ribs (da729951-bd49-415c-b364-03a4e38bfd9c)
By Michael Murphy, Khaled M. Mohamed, Berk Tulu
"Failures of coal ribs are major hazards in underground coal mines. For the period of 2010 to 2014, rib falls were the leading cause of groundfall fatalities and accounted for 35% of all groundfall-re
Jan 1, 2016
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Analysis of the Design and Performance Characteristics of Pumpable Roof Supports
By Timothy Batchler
"Pumpable roof supports are currently being used to provide a safe working environment for longwall mining. Because different pumpable supports are visually similar and installed fundamentally in the
Jan 1, 2016
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Case Study Of Stability Investigations Related To Shallow Underground Mining Of Iron Ore In The United Kingdom
By S. F. Smith
Following a roof beam collapse on a major production district at the British Steel Corporation's Dragonby Iron Ore Mine, Scunthorpe, South Humberside, UK, rock mechanics investigations were under
Jan 1, 1995
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Effects Of Mining On Underground Infrastructures In The German Hard Coal Sector
By Anton Sroka
The German hard coal production predominantly derives from underground multiseam mining activities. Beside common surface damages, ?inner mine damages? on underground infrastructures (i.e. main roads,
Jan 1, 1999
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Full-Scale Performance Evaluation of Mobile Roof Supports
By Thomas M. Barczak
The performance characteristics of Mobile Roof Supports (MRS's) were evaluated through full-scale testing in the Strategic Structures Testing Laboratory at the National Institute for Occupationa
Jan 1, 1997
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A Study of the Performance of Glass Fibre Rock Reinforcement Components
By Jonathan P. Furniss
The paper describes a range of laboratory tests undertaken on full column resin anchored glass fibre rockbolt systems, to assess all aspects of their performance. Laboratory instrumentation has been d
Jan 1, 1997
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Subsidence and Ground Deformation Prediction in North America-A Case Study and New Method Developments
By Karsten Zimmermann, Peter Cain
"To receive regulatory approval for a new coal mining operation in North America, extensive investigations of feasibility and potential environmental impacts, including ground deformations, are requir
Jan 1, 2016
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Simulation Test on Accumulation Laws of Paste-Like Slurry in Cavity Goaf of a Coal Mine
By Boqiang Wu, Ganggang Xu, Xiaodong Wang, Hai Wang, Shibin Zhu
"Using a paste-like slurry as a filling from the ground surface to the goaf, artificial pillars can be built in the cavity goaf to support the goaf roof to prevent roof collapse and ground subsidence.
Jan 1, 2018
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A Method to Determine the Corrosion Potential of Rock Bolts on Coal Mines
By Kanchan Mondal, Anthony (Sam) Spearing, Gopi Bylapudi, Joseph C. Hirschi
"The U.S. coal mining industry uses about 100 million rock anchors per year. ASTM F432 specifies the requirements for rock bolts on mines but does not address corrosion. Corrosion has been found to be
Jan 1, 2010
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Case Study of the Barro Branco Coal Mine Pillar Burst
By Fernando O. L. Xavier
"The Barro Branco coal mine was located in the southern region of Brazil, in the state of Santa Catarina. In 2002, an incident occurred at the mine, leading to a violent, massive pillar failure, resul
Jan 1, 2017
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Coal Pillar Design in Tabas Central Mine of Iran
By Mostafa Sharifzadeh, Ebrahim Ghasemi, Kourosh Shahriar
"The Tabas Central Mine (TCM) is one of the underground coal mines located in the Tabas coal region, in the mid-eastern part of Iran. This mine is the first mechanized coal mine in Iran that uses the
Jan 1, 2010
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Risk Analysis and Risk Ranking in Tunneling: A Case Study
By Behdeen Oraee
Constructing tunnels underground is generally described as a high-risk activity because conditions in the surrounding area tend to be unpredictable. This would and can create unique dangers in every s
Jan 1, 2014
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Roof Movement and Loading for Top-Coal Caving Longwall Mining in Extremely Inclined Thick Coal
By Shengliyang Yang, Jinghu Yang, Jiachen Wang, Xiaomeng Li
"Safe and efficient mining of extremely inclined thick coal seams less than 20m thick is one of the new challenges in China coal industry. In recent years, the extremely inclined thick coal seams have
Jan 1, 2016
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Shear Testing of 28 mm Hollow Strand "TG" Cable Bolt
By Naj Aziz, Peter Craig
"Double shearing tests were carried out on the 28 mm (1 in) hollow strand Jennmar TG cable bolt to gain a better understanding of the shearing behavior of the cable. The first test was limited to a 50
Jan 1, 2010
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The Potential of Acoustic Emissions from Three Point Bending Tests as Rock Failure Precursors
By Filippo Vallianatos, Michael Verigakis, Vasili Saltas, Kosta Kaklis, Stelio Mavrigiannakis, Zach Agioutantis
"Development of failure in brittle materials is associated with microcracks, which release energy in the form of elastic waves called acoustic emissions. This paper presents results from acoustic emis
Jan 1, 2015
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Introduction to Rock Strength Borehole Probe (RSBP) for Estimation of Rock Strength in Roofbolt Drill Holes
By I. Sedat Buyuksagis, Jamal Rostami, Ali Naeimipour
"Improving the safety of underground openings and optimizing ground support systems requires reliable ground characterization. This includes understanding the joints, discontinuities, and rock strengt
Jan 1, 2016