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  • SME-ICGCM
    Longwall Pace Bursts and Inadequate Caving: A Came Study

    By K. Y. Haramy

    Deep coal mines with strong roof and floor strata frequently encounter face and rib bursts. The burst problem becomes more severe with increased depth. While the exact causes of bursts are often diffi

    Jan 1, 1987

  • SME-ICGCM
    Monitoring Railroad Response To Mining Subsidence And Assessment Of Subsidence Effects On On Railroad - A Case Study

    By Yi Luo

    The responses of a section of railroad to ground subsidence process was monitored as it was undermined by a longwall panel. The subsidence data collected and the observations made through this monitor

    Jan 1, 1994

  • SME-ICGCM
    Practical Aspects Of Longwall Pillar Design

    By Christopher Mark

    The past decade has provided a wealth of practical experience with longwall pillar design. Design formulas developed specifically for longwalls have proven their value in numerous applications. Analyt

    Jan 1, 1990

  • SME-ICGCM
    Specialty Truss System And Their Performance

    By Ben L. Seegmiller

    Specially truss systems? including the Intersection Truss®, Continuous Entry Truss®, Cutter Roof Truss® and Roktrus® have been used in many coal mines in the mid- west and western United States during

    Jan 1, 1990

  • SME-ICGCM
    Investigation Into Cutting Characteristics Of Indian Coal Seams (bf5c67f9-81c7-4039-8f47-cd39420e2b8e)

    By T. N. Singh

    With a view to producing increased target output every year, Indian coal mining industry is fast moving towards mechanisation but the present approach of mechanisation suffers from lack of standardisa

    Jan 1, 1992

  • SME-ICGCM
    Pillar Sizing

    By Marek J. Mrugala

    Coal strength based on scaled uniaxial compressive strength from the laboratory and back calculations from in-mine observations of pillar stability indicate that material strength scaling rules are op

    Jan 1, 1989

  • SME-ICGCM
    Weak Claystone Floors And Their Implications To Pillar Design And Settlement (e297de16-ba6b-46bd-8383-22a15beca7b5)

    By Ross W. Seedsman

    The in situ behaviour of claystone floors associated with the Wallarah, Great Northern and Fassifem Seams has been studied using a comprehensive suite of stress and displacement monitors. The instrume

    Jan 1, 1992

  • SME-ICGCM
    Integrity Factor Approach to Assess the Stability of Room-and-Pillar Mines

    By Kanaan Hanna

    The integrity factor approach was developed by the Bureau of nines to assess the stability of mine pillars and has been applied primarily to longwall chain pillars. Recently this approach was applied

    Jan 1, 1988

  • SME-ICGCM
    Landslide Occurrence and Causation in Steep Slope Areas of Appalachia

    By David Newman

    Landslides and soil creep often occur with varying degrees of severity on steep slopes within Southern Appalachia. Ground movement may take place over years with subtle changes in topography and veget

    Jan 1, 1998

  • SME-ICGCM
    Design Considerations For Cable Truss Secondary Supports In Roadways Of Underground Collieries

    The purpose and current practice of cable trusses in underground coal mines is briefly outlined and details of various cable truss designs are presented. The main part of the paper describes the in-si

    Jan 1, 1992

  • SME-ICGCM
    Site Characterization For Planning Underground Stone Mines

    By Francis S. Kendorski

    Underground stone mines tier construction aggregates and industrial minerals are being planned in increasing numbers throughout the United States. At the middle of the last century (1950s) underground

    Jan 1, 2000

  • SME-ICGCM
    A Case Study Of Abandoned Mine Subsidence At Dominion, Nova Scotia, Canada, 2002-2003

    By Dave Forrester

    Mining subsidence over shallow abandoned coal mine workings is unfortunately not an uncommon experience in the coalfields of North America and there is a significant knowledge and literature base addr

    Jan 1, 2004

  • SME-ICGCM
    The Application Of Underground In-Seam Seismic Methods (UISS) To Map The Coal Seam Structure Across Longwall Panels

    By Rene Rodriguez

    The initial results of our investigations on the applicability of geophysical exploration methods to map coal seam inclusions were summarized in a paper submitted at the Thirteenth Conference on Groun

    Jan 1, 1995

  • SME-ICGCM
    The Influence Of Horizontal Stress On Pillar Design And Mine Layout At Two Underground Limestone Mines

    By Garth Kuhnhein

    The Black River and Maysville underground limestone mines operated by Carmeuse Lime and Stone, Inc. in northeastem Kentucky are two of the largest underground limestone operations in the United States

    Jan 1, 2004

  • SME-ICGCM
    Pre-Driven Experimental Longwall Recovery Room Under Weak Roof Conditions - Design, Implementation, and Evaluation

    By Stephen Tadolini

    Reduction in the time required and improvements in safety during a longwall face move have compelled coal mine operators to examine and use pre-driven longwall recovery rooms. While this concept is no

    Jan 1, 2002

  • SME-ICGCM
    Drag Picks - Influence Of Tool Geometry And Angle Of Arrack On The Stress Evolution And Cutting Efficiency

    During the last decade mechanical rock excavation has become increasingly widespread in the mining industry and, more in general, in excavation engineering. This technology, especially the tools and t

    Jan 1, 1990

  • SME-ICGCM
    Performance and Safety Considerations of Hydraulic Support Systems (eb62774d-dbca-420f-b228-950711bafbce)

    By Thomas Barczak

    Hydraulic cylinders are used in several roof support systems, such as longwall shields and mobile roof supports, to provide critical ground control Many state-of-the-art hydraulic support system opera

    Jan 1, 1998

  • SME-ICGCM
    Deign of Support System for Mining Tunnels in Carboniferous Rock Conditions

    By B. N. Whittaker

    The paper briefly reviews the type of support and stability problems encountered in mining tunnels in U.K. Carboniferous rock conditions, particularly the Coal Measures where almost all such tunnels a

    Jan 1, 1987

  • SME-ICGCM
    Mining Under Strong Roof

    By K. Y. Haramy

    Strong roof helps minimize roof fall problems in coal mine entries. However, the Inability of strong roof to cave readily may contribute to major ground control problems In Iongwall and retreat mining

    Jan 1, 1988

  • SME-ICGCM
    Utilizing The ?Advance And Relieve? Method To Reduce Horizontal Stress Affects On The Mine Roof, A Case Study (b5b945af-699f-46b0-ae56-a98434baad9f)

    By Dennis R. Dolinar

    A room and pillar coal operation in central Pennsylvania was experiencing roof cutters and long running roof falls caused by high horizontal stresses. The roof conditions created hazards for the miner

    Jan 1, 2000