Search Documents

Search Again

Search Again

Refine Search

Publication Date
Clear

Refine Search

Publication Date
Clear
Organization
Organization
  • SME-ICGCM
    Numerical Analysis of Some Geotechnical Factors Influencing the Application of Longwall Top Coal Caving

    By Dao Hong Quang

    This paper describes the numerical analysis of some geotechnical factors influencing the application of Longwall Top Coal Caving (LTCC) method. The study was aimed at comparing the differences in stre

    Jan 1, 2008

  • SME-ICGCM
    Weak Floor Stability During Perimeter Mining In The Illinois Basin Coal Mines (40fab914-2257-4efe-b587-9358b9303f41)

    By Murali M. Gadde

    Perimeter mining is a special form of very productive partial extraction method practiced at some mines in the United States. In the Illinois Basin mines where all major coal seams have weak underclay

    Jan 1, 2009

  • SME-ICGCM
    Underground Movement Of Rock Mass And Stress Distribution Due To Multiple Mining

    By Victor V. Nazimko

    Multiple mining generates gob-interaction displacements. They redistribute stress m strata and obey laws of irreversibility thermodynamics. An irreversible state causes inhomogeneity of the stress dis

    Jan 1, 1996

  • SME-ICGCM
    How Interface Friction and W/H Ratio Affect the Mode of Failure of Coal Specimens

    By Syd Peng, Gamal Rashed

    "Bumps in coal mines have been recognized as a major hazard for many years. These sudden violent failures around mine openings have compromised safety, ventilation and access to mine workings. Previou

    Jan 1, 2015

  • SME-ICGCM
    Determination Of Horizontal Stress Direction By Underground Mine Mapping (2f4eaf66-10ce-4f4d-9f7a-64c6c21e6400)

    By S. E. Phillipson

    Underground mine mapping is a critical component of understanding the controls on ground instability. Many relatively localized examples of ground failure are associated with geologic features, such

    Jan 1, 2009

  • SME-ICGCM
    Application Of Tomographic Imaging To Stability Assessment

    By Hamid Maleki

    Roof falls are one of the leading ground control problems that adversely influence productivity and worker safety in underground mines, construction sites, and nuclear waste repositories. To control r

    Jan 1, 1996

  • SME-ICGCM
    An Application Of Fem Back Analysis Method To Mine Roadway

    Knowledge of initial ground pressures or in-situ stresses and mechanical properties and geological conditions is of great importance in drivage and maintenance of a mine roadway. Field measurements

    Jan 1, 1990

  • SME-ICGCM
    Realistic Design Of Ground Control Based On Geotechnical Data Obtained During Mine Development

    By Kot F. Unrug

    In the premining stage of engineering design, the only available data are obtained from core drilling. It is often not sufficient for a realistic design of strata control. During the development, an a

    Jan 1, 1994

  • SME-ICGCM
    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

  • 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
    Experimental Study Of Line Electrode Method To Detect Underground Cavities

    By F. Ziaie

    Line electrical resistivity method using physically infinite distance between current line electrodes is proposed to determine the location of mine workings. In this method at least three line electro

    Jan 1, 1989

  • SME-ICGCM
    Monitoring Subsidence Over Submarine Coal Mines In The Sydney Coalfield By Bathymetric Methods

    By David Forrester

    Subsidence beneath the land surface has traditionally been monitored using the most accurate surveying methods of the day. Over the several hundred years of subsidence investigation, these techniques

    Jan 1, 1996

  • SME-ICGCM
    A Method For Determination Of Strength Of Coal Mass

    By Guo Junfeng

    The strength of coal mass saturated with gas is an essential parameter in studying the mechanism of gas and coal outburst, and its prediction method. Up to now, there has not been a method for determi

    Jan 1, 1992

  • SME-ICGCM
    Displacement Discontinuity Method For Three-Dimensional Stress Analysis Of Tabular Excavations In Non-Homogeneous Rock (ff6cd480-c238-4f06-bf11-52c054cbd2e8)

    By Leigh J. Wardle

    This paper describes a numerical method for calculating the three¬-dimensional stresses and displacements induced by tabular excavations in a rock mass consisting of parallel layers of distinct mater

    Jan 1, 1984

  • SME-ICGCM
    Relationship between the clay fabric of roof shales and roof collapse in mines of the Herrin cod, southern Illinois

    By Theresa M. Bodus

    The strength of roof shales is, in part, a function of the preferred orientation of clay minerals within them. Therefore, analysis of clay fabric under both air-dried and hydrated conditions should be

    Jan 1, 1989

  • SME-ICGCM
    Strata Management with Ground Behavior Assessment for Mass Exploitation of Coal Deposits: A Case Study of Continuous Miner

    By Sanjay Kumar Singh

    The mechanics of load transfer in bord-and-pillar mining is not well understood despite the evolution of the art of pillar extraction over the last 20 years via trial and error (empirical) or Rock Mas

    Jan 1, 2012

  • SME-ICGCM
    Ground Movements Associated With Pillar Extraction Coal Mining In Northern West Virginia (38f818ad-9d3b-4ecb-b624-667cef121309)

    By Robert W. Bruhn

    An investigation was male of ground response to pillar retreat mining in a 1.7 meter thick seam at 108 meter depth at a site in northern West Virginia. This paper describes mining-related stress chang

    Jan 1, 1984

  • SME-ICGCM
    Application Of Hilti Onestep Bolts For Roadway Support In German Deep Coal Mines

    By Michael Bayerl

    The HILTI OneStep rockbolt was implemented for roadway development in German deep coal mines in 2004. The development by HILTI Company is based on a technical joint venture with RAG Deutsche Steinkoh

    Jan 1, 2009

  • SME-ICGCM
    Load Determination For Long Cable Bolt Support Using Computer Aided Bolt Load Estimation (CABLE) Program

    In this paper a numerical formulation is presented for determination of the axial load along a cable bolt for a prescribed distribution of rock mass displacement. Results using the program CABLE indic

    Jan 1, 1996

  • SME-ICGCM
    New Approach in Rock Bolting that Adds to Bearing Capacity and Yield of the Bolts without Increase to the Cost of the Technology

    By Victor Nazimko

    A new technique for reaming the holes has been tested. This technique is available for reaming a hole at its deep end creating an enlarged cavity that has helicoidal grooves oriented at less than 40 d

    Jan 1, 2008