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  • SME-ICGCM
    Sublevel Caving Mining Method for Extra-Thick Coal Seams

    By H. Nan

    Using the case of Qianqiu Mine, Yima Coal Mining Administration, theoretical analysis, laboratory physical simulation, and underground observation were performed to study the major parameters for full

    Jan 1, 2006

  • SME-ICGCM
    The Initial Collapse of the Overburden Over Longwall Panels

    By Gennaro Marino

    Documented case histories are studied where data were found on the initial collapse of the overburden above the longwall panels. Under this scenario, the most controlled conditions exist for assessing

    Jan 1, 1987

  • SME-ICGCM
    The Contributions of the Alpha Foundation to Ground Control Research and Development

    By Tom Barczak, Julian Restrepo, Zach Agioutantis

    "The Alpha Foundation for the Improvement of Mine Safety and Health, Inc. (Foundation) was established as part of a Non-Prosecution Agreement (Agreement) entered in December 2011 by the United States

    Jan 1, 2016

  • SME-ICGCM
    Computer Modeling Of Yield Pillar Behavior Using Post-Failure Criteria

    In this paper, the plastic increment theory was applied in a 2-D finite element model, and a generalized Von Mises yielding criterion adopted to simulate the progressive failure of coal pillars. Exten

    Jan 1, 1988

  • SME-ICGCM
    Systematic Principles of Surrounding Rock Control in Longwall Mining within Thick Coal Seams

    By Zhaohui Wang, Jiachen Wang

    "Effective surrounding rock control is a prerequisite for realizing safe mining in underground longwall faces. In the past three decades, longwall top-coal caving mining (LTCC) and single pass large h

    Jan 1, 2018

  • SME-ICGCM
    Combined Effects of Rock Bedding Orientation and Topography on Stresses Around Mine Openings

    By Amirhossein Molavi Tabrizi

    In this paper we introduce a realistic model for mine openings that explicitly considers the effects of local irregular topography. Also, we consider the effect of entry orientation and rock anisotrop

    Jan 1, 2014

  • SME-ICGCM
    Microseismic Monitoring In The Sydney Coalfield

    By G. R. Corbett

    Between 1977 and 1984, No. 26 Colliery, at Glace Bay in the Sydney Coalfield, suffered from a series of 37 rock/gas outbursts. These events were characterized by the complete pulverization of a sandst

    Jan 1, 1994

  • SME-ICGCM
    Application of Phenolic Foam in Longwall Mining

    By Marc Arl

    Failures of the face and roof above longwall shields have caused days and sometimes weeks of lost production. A common recovery method for these failures has been to pump light weight cementitious gro

    Jan 1, 2005

  • SME-ICGCM
    Influences of Longwall Subsidence on a Guyed Steel Tower - A Case Study

    By Yi Luo

    The potential influences of mining subsidence on structural stability, integrity and functionality of guyed tower structures have not been systematically studied before. This paper presents a ease stu

    Jan 1, 2003

  • SME-ICGCM
    Mining Method For Extracting An Eight Metre Coal Horizon Containing A Sandstone Layer

    By Freddie Hunter

    An underground mining method for extracting an eight metre (26') coal horizon, containing a sandstone layer. A decrease in the thickness of the rock strata between the number two and number th

    Jan 1, 2003

  • SME-ICGCM
    A Comprehensive Computer Model For Predicting Dynamic Subsidence For Longwall Operations

    By Y. Luo

    This paper presents a number of mathematical models for predicting the different phases of the complete surface subsidence process associated with underground longwall mining. A computer program devel

    Jan 1, 1992

  • SME-ICGCM
    Monitoring Of The Interaction Effects Over A Longwall Panel In The Sydney Coalfield, Nova Scotia

    By Peter Cain

    The Phalen Colliery in the Sydney Coalfield is extracting the 2.6 m thick Phalen Seam by the panel and pillar longwall retreat method. Abandoned workings occur in the Harbour Seam 140 m above and over

    Jan 1, 1993

  • SME-ICGCM
    Strength and Deformation Characteristics of Coal under Cyclic Loading

    By Yongjie Yang

    Experimental study on the strength and deformation characteristics of coal under cyclic loading provides guidance for designing coal pillar which is subjected to repeated mining influence during minin

    Jan 1, 2006

  • SME-ICGCM
    Time–Lapse Photogrammetric Monitoring of an Underground Stone Mine

    By Brent A. Slaker, Michael Murphy, John Ellenberger, Erik Westman

    "Photogrammetry, as a tool for monitoring underground mine deformation, is an alternative to traditional point measurement devices, and may be capable of accurate measurements in situations where tech

    Jan 1, 2015

  • SME-ICGCM
    Deformation Development Around Mine Roadways And Simulation Of Roadway Supports

    By E. Yasar

    This paper describes the use of the sand and plaster physical modelling technique to investigate the deformation around mine roadways using a variety of support methods in a particular form of stress

    Jan 1, 1995

  • SME-ICGCM
    Longwall Ground Behavior Characteristics In The Illinois Coal Basin - A Field Study

    By Zhanjing Yu

    Longwall ground behavior in the Illinois Coal Basin was studied in the past (1, 2, 3). Most of the past studies, however, were concentrated on either surface subsidence or underground structural behav

    Jan 1, 1994

  • SME-ICGCM
    Roof Geology Mapping In Underground Coal Mines

    By Daniel W. H. Su

    Underground roof geology reconnaissance is being conducted by CONSOL Inc. to enhance mine productivity. Often, roof instability within mine entries is the consequence of highly variable geology that c

    Jan 1, 1999

  • SME-ICGCM
    Longwall Geomechanics, An Australian Perspective

    By Michael Kelly

    Longwall mining is the principal method of underground coal mining in Australia, with 70 million tonnes being produced by longwall mines in 1999. However, the mechanisms that control longwall geomecha

    Jan 1, 2000

  • SME-ICGCM
    Roof Falls And Caving In Longwall Mining Operations

    By Kot F. Unrug

    Since the introduction of longwall systems, the prediction of roof behavior and support requirements have become the major issue referring directly to safety as well as productivity. In more recen

    Jan 1, 1982

  • SME-ICGCM
    Numerical Simulation on Microseismicity Due to Mining at One of the Collieries in Australia

    Numerical simulation for microseismicity due to mining at one of the collieries in Australia was carried out and the results were compared to the observed microscismicity. 3-D Stress analysis showe

    Jan 1, 2001