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  • SME-ICGCM
    Study Of The Impact Of Mining Under Massive Roof At Datong Coal Mines, China (7e96e5f6-0b09-4bad-866d-2ffcd02d33be)

    By Song Yong Jin

    The Jurassic coals at Datong are characterised by their strong, massive sandstone and conglomerate roofs which fail suddenly over large areas, crushing pillars and creating destructive windblasts, col

    Jan 1, 1992

  • SME-ICGCM
    Determination Of The Rock Strength From Portable Rock Tester

    By K. F. Unrug

    A new testing technique for the determination of the rock strength from portable rock tester is proposed. It is a quick and economical method that can determine the rock strength with reasonable accur

    Jan 1, 1990

  • SME-ICGCM
    Evaluation Of Measurement System For Monitoring The Stability Of Roof Bolted Roadways With Rectangular Cross Section By Selected Examples

    By Axel Preusse

    To detect improper deformations of a roof bolted roadway in order to reduce inner mine damages in the most early stage and to initiate suitable countermeasures if necessary, several different measurem

    Jan 1, 2000

  • SME-ICGCM
    Development Of Stress Measurement Techniques In Bump-Prone Coal For Safety Decisions

    By Eric G. Zahl

    Researchers at the Spokane Research Laboratory of the National institute for Occupational Safety and health are evaluating stress and displacement measurements in a longwall coal mine. The objective i

    Jan 1, 2000

  • SME-ICGCM
    Implementation and Evaluation of Roof Bolting in MICARE Mine II

    By Gustavo Herrera Rico

    As part of a general effort to increase safety, efficiency, and profitability of its mining operations, MICARE personnel with the support of NorWest Mine Services, Inc. determined that the key to impr

    Jan 1, 1997

  • SME-ICGCM
    Practical Detection Of Underground Mine Roof Failure

    By David Bigby

    The paper describes research undertaken on an ECSC/K HSE project which investigated several potential physical principles which might be harnessed to provide a non-intrusive means of determining the e

    Jan 1, 2004

  • 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
    Recent Developments In Subsidence Prediction And Control For The Eastern U.S. Coalfields

    By M. Karmis

    Underground mining will disturb the natural equilibrium of the rock mass, causing significant stress redistributions in the vicinity of the excavation with corresponding horizontal and vertical displa

    Jan 1, 1984

  • SME-ICGCM
    Drivage System In Retreat Longwall Gateroad

    By Kikuo Matsui

    In a difficult economic environment, the coal mines in Japan have been making extensive efforts in order to survive by rationalizing the mining operations. Introduction of a new longwall mining system

    Jan 1, 1995

  • SME-ICGCM
    An Underground Trial Of Cable Slings For Remedial Support Of Longwall Gateroads

    By William D. Gallant

    This paper describes a joint cooperative project between the CANMET Cape Breton Coal Research Laboratory and the Cape Breton Development Corporation to conduct a trial of split set cable slings for re

    Jan 1, 1990

  • SME-ICGCM
    Innovative Rock Reinforcement Hardware (a5497235-47bd-4c2e-8654-b4e79927169e)

    By D. F. Howarth

    Two innovative ground reinforcement products have been developed for use in the mining industry. One of these products is a high strength polyethylene (HOPE) bar for use as a rib bolt in underground c

    Jan 1, 1992

  • SME-ICGCM
    Design and Field Testing of a Mobile Roof Support for Retreat Mining,

    By Robert R. Thompson

    Retreat pillar mining is highly productive but dangerous. The primary danger during pillar removal is premature caving of the roof. Because the safety of the miners is dependent on successfully contro

    Jan 1, 1986

  • SME-ICGCM
    Early Warning of Longwall Weighting Events and Roof Cavities Using Lva Software

    By David I. Hoyer

    It is shown that by monitoring longwall leg pressures in real time, warning can be given for significant weighting events and the formation of roof instabilities, such as roof cavities, several hours

    Jan 1, 2011

  • SME-ICGCM
    The Use of NDT Methods to Determine the Condition of Rockbolt Support During the Recovery of a Previously Flooded Coal Mine Roadway at Thoresby Colliery

    By Brian Clifford

    Thoresby Colliery is in the process of recovering an old roadway that was flooded following the closure of an adjacent mine. The aim is to re-use the roadway as a gate road for a longwall retreat pane

    Jan 1, 2002

  • SME-ICGCM
    Finite Element Modeling Of Subsidence Induced By Underground Coal Mining: The Influence Of Material Nonlinearity And Shearing Along Existing Planes Of Weakness

    By Daniel W. H. Su

    Surface subsidence induced by multiple-panel coal extraction was calculated with finite element stress analysis. The use of nonlinear material behavior and GAP elements, which provide a realistic repr

    Jan 1, 1990

  • SME-ICGCM
    Mining Under Rivers In Fuxin Coal Mines

    By Liang Yin-Huai

    In Fuxin Coal Mines, there are more than 20 million tons of coal buried under seasonal streams. The coal seams are mostly shallow. We have mined more then 50 mining blocks distributed in 5 coal mines.

    Jan 1, 1990

  • SME-ICGCM
    State Of The Art Testing Of Powered Roof Supports

    By Robert C. Garson

    The Mine Roof Simulator at the DOE'S Mining Equipment Test Facility is described. Its use in the research and development on the behavior and response of longwall roof supports to simulated mine

    Jan 1, 1982

  • SME-ICGCM
    Numerical Modeling for Increased Understanding of the Behavior and Performance of Coal Mine Stoppings

    By Lisa Burke

    In underground coal mines, concrete block stoppings are widely used to control mine ventilation. Although stoppings are not intended as roof support, they are subjected to roof to floor convergence, a

    Jan 1, 2004

  • SME-ICGCM
    Monitoring For The Evaluation Of The Stability Of Underground Openings

    By P. K. Kaiser

    The purpose of deformation monitoring for the evaluation of the stability of underground openings is reviewed briefly and some results from laboratory tests of small tunnels are presented. The ground

    Jan 1, 1981

  • SME-ICGCM
    Subsurface Fracture Development Due To Longwall Mining And Its Interpretation Using Image Processing Techniques (736b40e1-a21a-40c0-a678-75088df69d02)

    By Gexin Sun

    This paper presents the physical modelling results of subsurface fracture development associated with longwall mining operations and an application of image processing techniques to interpretion of th

    Jan 1, 1992