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  • SME-ICGCM
    A comparison between two- and three-dimensional numerical models of a Coeur d'Alene District mine

    By T. J. McMahon

    This Bureau of Mines study describes the development of a large-scale, three-dimensional, finite-element model of a deep-vein Coeur d?Alene District mine. The three-dimensional model was prepared from

    Jan 1, 1989

  • SME-ICGCM
    Evaluation of Rock Excavation Technologies for Seismically Active Mines

    By S. Paul Singh

    "The long-term viability of seismically active and/or deep mining operations hinges upon the industry's ability to maintain profitability in a climate of increasingly difficult conditions, escalating

    Jan 1, 2010

  • SME-ICGCM
    Chemical Consolidation For Roadway Surrounding Rock - It's Theory And Applications

    By Jinhua Wang

    Based on engineering examples and theoretical analysis, the mechanism of chemical consolidation for fractured roadway surrounding rock was discussed. The chemical consolidating materials and three con

    Jan 1, 1996

  • SME-ICGCM
    Determination Of Basis For The Double Use Of Rectangular Rockbolted Roadways In The D/C Seam At The Auguste Victoria Mine

    By Karl H. Brandt

    In the Auguste Victoria mine a bolted rectangular roadway has been kept open for the first time in the seam D/C after retreat. The target of the project was to gain a basis for planning and experie

    Jan 1, 2001

  • SME-ICGCM
    Effects Of Bedding Plane Sliding And Separation And Tensioned Bolt In Layered Roof

    3-D finite element modeling was performed to study the effect of bedding plane sliding and separation and tensioned bolt in layered root It was found that the major influence zones of a tensioned bolt

    Jan 1, 2001

  • 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
    Coal Rib Response during Bench Mining: A Case Study

    By Morgan M. Sears, Mark Van Dyke, Gamal Rashed, John Rusnak, Khaled Mohamed

    "In 2016, room-and-pillar mining provided nearly 40% of underground coal production in the United States. Over the past decade, rib falls have resulted in 12 fatalities, representing 28% of the ground

    Jan 1, 2017

  • SME-ICGCM
    Development and Implementation of the “Spin to Stall” Resin Bolting System at Anglo Americans Australian Underground Coal Operations

    By Ismet Canbulat, John Naylor, Jason Emery, Peter Craig, Andy Sykes

    "Longwall mining is by far the most common method of underground coal extraction in Australia. The industry trends and expectations are placing increasing emphasis on the reliability and productivity

    Jan 1, 2015

  • SME-ICGCM
    Basic Procedures for Monitoring and Modeling Abandoned Underground Coal Mines for Safety Due to Uncontrolled Closures: Case Study of Verdinho Mine, Santa Catarina State, Brazil

    By Selmar A. Oliveira

    "Safe mine closure is an important step in the mining lifecycle. Plans for safe and efficient closure should begin at the inception of mining. Ideally, closure occurs when the reserve has been deplete

    Jan 1, 2017

  • SME-ICGCM
    Study on Top-Coal Loss and the Optimum Drawing Interval of Longwall Top-Coal Caving Mining

    By Qiang Fu

    ABSTRACT This paper aims to identify the main issues concerning top-coal loss and the optimum drawing interval of LTCC (Longwall Top-coal Caving) mining by underground tests and DEM (Distinct Element

    Jan 1, 2002

  • SME-ICGCM
    Coal Combustion Byproducts-Based Artificial Mine Supports - Recent Developments

    By Y. P. Chugh

    The use of wooden supports, supplementary to the primary method of roof control using roof bolts in mines, consumes over 3 million cubic meters of hardwood in the U.S. annually. These supports arc pri

    Jan 1, 2004

  • SME-ICGCM
    Safety and Productivity Innovations in Mechanized Bolting

    By Gregory Hinshaw

    Underground mine bolting machines have evolved since inception in the 1940's due to the need for increased safety and productivity. However, major design innovations historically came from change

    Jan 1, 1998

  • SME-ICGCM
    The Directional Drill Monitor For Long Hole Gas Drainage In Coal Mines (d6b87c76-5ad8-4cc5-b4ae-23b79c52c32b)

    By G. Skybey

    The Directional Drill Monitor (DDM) is an advanced instrument for real time in hole surveying. It was developed by Du Pont (Australia) to suit Australian gassy coal mining conditions. The instrumen

    Jan 1, 1992

  • SME-ICGCM
    Prediction And Control Of Surface Subsidence Over Abandoned Mined Lands In Carbonia (Italy)

    By Pier Paolo Manca

    The investigated area lies close to a large town and covers an area of about lkm2. The mine was worked at depths ranging from 5 to 100 meters but mining operations actually ceased some 50 years ago. T

    Jan 1, 1999

  • SME-ICGCM
    Seepage and Reinforcement Behavior of Grouting Into Slaking-Prone Mine Tunnel Floor

    By Hideki Shimada

    In underground coal mines, grouting method is employed in order to reinforce the floor and to control the movement of groundwater into the roadway. However, the seepage and the reinforcement behavior

    Jan 1, 2002

  • SME-ICGCM
    Numerical Modeling Of Longwalls In Deep Coal Mines

    By Salah Badr

    Longwall mine layouts with their entries, chain pillars, face support systems, advancing mining faces and compacting gobs represent a geomechanically complex mining operation. Geomechanical aspects ar

    Jan 1, 2003

  • SME-ICGCM
    Modelling Of Pillar Stability In Room And Pillar Mines

    By Douglas Morrison

    By applying modern 3D numerical modelling techniques to the analysis of a pillar cascade failure in a room and pillar mine, it has been possible to simulate the collapse and develop an understanding o

    Jan 1, 2003

  • SME-ICGCM
    A Comparison between Empirical and Numerical Methods in Underground Galleries Support System Design

    By Saeed Zandi, Kazem Oraee

    "Tunnels and galleries are the most important structures in coal mines. They are used for variety of purposes, such as transporting ore and people and for ventilation. A well-designed support system i

    Jan 1, 2016

  • SME-ICGCM
    The Influence Of Geomining Parameters Over Stress Distribution In And Around Depillaring Faces

    By Rajendra Singh

    In India, pillar mining is contributing more than 90% of underground production which involves extraction of a part of coal from bords with pillars around as natural support in the development stage.

    Jan 1, 1990

  • SME-ICGCM
    Mechanism and Prevention Measure of Rib Spalling in 6.5 Meter High Caving Face in Thick Coal Seam with Undulated Floor

    By Weidong Pan, Yinchao Yang, Baodong Zuo

    Fully mechanized mining technology, with a large cutting height in thick coal seam, has been developed to be large-scale, mechanized, and intelligent. Furthermore, it is also superior to other mining

    Jan 1, 2017