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  • SME-ICGCM
    Mine Stability Evaluation From Microseismic Activity (5cc6a13d-fd4e-4c74-a7d1-2213b7f2a1da)

    By Brian R. A. Wood

    Any defect activity resulting from an applied stimulus on a structure will generate a stress wave which travels in the medium under the laws of acoustics, thus the name of acoustic emission (AE). AE t

    Jan 1, 1992

  • SME-ICGCM
    Integrated Instrumentation Method of Stress State, Material Property, and Deformation Measurement for Stress Control Method of Mining

    By Shosei Serata

    The application of conventional rock mechanics methods to complex ground is very difficult. Yet. In most underground mining, the ground is complex. Therefore. conventional methods are not only difficu

    Jan 1, 1986

  • SME-ICGCM
    Application Of Time Domain Reflectometry To Mining

    By Kevin M. Connor, Malcolm J. McPhersqn

    Examples are presented in which Time Domain Reflectometry (TDR) was employed to locate deformation of rock masses induced by mining. The first example involved motoring the propagation of overburden f

    Jan 1, 1984

  • SME-ICGCM
    Correlation of Acoustic Emission (A.E.) with Physical and Mechanical Properties of Different Types of Rock and Coal Specimens

    By Brijes Mishra

    This paper presents a correlation of acoustic emission (A.E.) with physical and mechanical properties of different types of rock and coal specimens which were tested under aegis of a consultancy proje

    Jan 1, 2006

  • SME-ICGCM
    Massive Pillar Collapse: a Room?and?Pillar Marble Mine Case Study

    By Sandin E. Phillipson

    The Mine Safety and Health Administration?s Roof Control Division responded to a massive ground failure at an underground marble mine in northern Georgia. The ground failure occurred in a benched area

    Jan 1, 2012

  • SME-ICGCM
    Rock Mechanics Investigations on Seismic Events Around Two Longwall Coal Operations

    By Michael Alber

    Coal mining by the longwall method typically causes seismic events. This paper describes the research on mining induced seismicity around two specific longwalls at 1100m depth under several old longwa

    Jan 1, 2008

  • SME-ICGCM
    Three-dimensional FEM analysis to sale field measurements from deep mine accessways

    By M. J. Beus

    A shaft is truly the "lifelinen of an underground mine. Damage to the shaft lining and guides as a result of ground movement can result in serious loss of production and extensive and continual repair

    Jan 1, 1989

  • SME-ICGCM
    Evaluation And Design Considerations For Pillar/Roof Separation In An Operating Coal Mine (3e69124f-30b4-40c5-9503-bd59304b248f)

    By Mike Amick

    As virgin coal reserves dwindle, more and more mines are being opened in areas with previous mining. As addressed in this conference before, there are solutions available for designing mines extracti

    Jan 1, 2009

  • SME-ICGCM
    Mining Through In-panel Entries and Full-face Recovery Room Without

    By John Smyth

    Mining through in panel entries and the full face recovery method has been successfully practiced at U.S. Stwl, Mine 50. Suppat of the cut-through entries and recovery room is critical. Traditionally,

    Jan 1, 1998

  • SME-ICGCM
    Technique To Measure Resultant Load Vector On Shield Supports (b937ef33-c51b-4de4-a956-dc8be749fea8)

    By Thomas M. Barczak

    The resultant load vector is the representation of the forces applied to a longwall roof support element by caving strata into a single, quantifiable measure of support resistance. The relatively comp

    Jan 1, 1984

  • SME-ICGCM
    Proposed Criteria For Subsidence Damage To Buildings (d2ee0f1e-295b-4fb1-ab17-d19f1e17df4a)

    By Swapan Bhattacharya

    United States federal and state regulatory authorities require underground mine operators to adopt adequate measures to minimize material damage to the surface caused by nine subsidence. This paper pr

    Jan 1, 1984

  • SME-ICGCM
    Development of a mechanistic model for prediction of maximum subsidence and subsidence profile due to longwall mining

    By Richard D. Begley

    This paper summarizes the development of a mechanistic model to predict longwall mining induced surface subsidence. The model was originally developed from data acquired from a recent field study cond

    Jan 1, 1989

  • SME-ICGCM
    Automated Monitoring Of Rock Slopes And Waste Dumps

    By Andrew G. Martin

    In 1991, Modular Mining Systems began marketing a Slope Monitoring System (SMS) now installed at twelve mines. The SMS uses automated wire line extensometers to monitor field conditions frequently. Ev

    Jan 1, 1996

  • SME-ICGCM
    An Overview Of The National Roof Evaluation Accident Prevention (REAP) Program

    By J. M. Krese

    This paper gives an overview of the National REAP program emphasizing the program's current status and future plans. A brief historical review of the program will be given containing roof-fall ac

    Jan 1, 1988

  • SME-ICGCM
    Subsidence Misconceptions And Myths

    By Richard E. Gray

    Subsidence due to coal mining is poorly understood by non-specialists. This has led to numerous misconceptions and myths based on limited observations and lack of knowledge. The three most common are:

    Jan 1, 1996

  • SME-ICGCM
    Investigation of the Stability of a Pillar Retreat Section at the Fletcher Mine

    By Doug Tesarik

    Researchers from the National Institute for Occupational Safety and Health1 (NIOSH), together with employees from The Doe Run Company, are monitoring and evaluating the stability of a pillar retreat s

    Jan 1, 2006

  • SME-ICGCM
    Surface damage due to longwall mining - A case study

    By P. M. Lin

    A subsidence monitoring program over a longwall panel was established (1) to explore the impacts of dynamic subsidence on the ground surface and structures and (2) to correlate the movements between t

    Jan 1, 1989

  • SME-ICGCM
    Coal Mine Bumps: Case Histories of Analysis and Avoidance

    By David Newman

    In Eastern Kentucky, the Darby seam has had an extensive history of coal bumps and pillar bursts. The combination of high overburden, strong rock and coal, subjacent and superjacent mines, and retrea

    Jan 1, 2008

  • SME-ICGCM
    Insitu Performance of One Step Bolts to New Zealand Thick Coal Seam Mining Environments

    By Richard Campbell

    Effective strata control, utilising fully encapsulated resin grouted roof bolts is dependent on the installed quality of the reinforcement elements. Resin based grouts are the main form of rock bolt

    Jan 1, 2006

  • SME-ICGCM
    Longwall Shield Recovery Using Mobile Roof Supports (64264c53-830d-4e84-b91e-78532103884a)

    By Frank Chase

    Longwall mining has gained the reputation as being the safest extraction method in underground coal mines. However, one of the most difficult tasks associated with longwall mining is moving the face

    Jan 1, 2007