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  • SME-ICGCM
    Risk Assessment Of Geotechnical Factors Associated With Underground Thick Seam Mining Methods

    By Bruce K. Hebblewhit

    Australia is well endowed with extensive reserves of thick underground coal scams, particularly in the range of 4.5m to 9m thicknesses. (For the purposes of this paper, thick scams are defined as bein

    Jan 1, 2001

  • SME-ICGCM
    Research on Abutment Pressure Distribution for Longwall Face Mining Through Abandoned Gateroads

    By Peng Cao, Jimin Su, Yang Li

    "Abutment pressure distribution is different when a longwall panel is passing through the abandoned gateroads in a damaged coal seam. According to the geological conditon of panel E13103 in Cuijiazhai

    Jan 1, 2018

  • SME-ICGCM
    Study on the Modified Model of Probability Integra Method

    By Zhang Hongzhen

    The fast convergence of boundary is a major problem of probability integral method, especially for the prediction of mining under thick alluvium, abandoned mine goaf, etc. To solve this problem and im

    Jan 1, 2014

  • SME-ICGCM
    Analysis of Ground Control Codes in the International Codes of the International Labour Organisation

    By Kazem Oraee-Mirzamani, Nikzad Oraee-Mirzamani, Arash Goodarzi

    "Unexpected movement of ground can potentially endanger lives, damage equipment or destroy property. Occupational accidents frequently occur with fatal consequences in developing countries with signif

    Jan 1, 2010

  • SME-ICGCM
    Study on the Top Caving Mining Technology in Thick Coal Seam beneath the Earth-Rock Dam and Its Influence

    By Wenbing Guo, Yi Tan, Erhu Bai

    "It is important to study the mining technology under structures for raising the coal resources recovery ratio. Based on the geological and mining conditions, the top coal caving harmonic mining techn

    Jan 1, 2016

  • SME-ICGCM
    Monitoring Consolidation Settlement Deformation in Deep Borehole of Unconsolidated Strata USing Fiber Bragg Grating Sensing

    By Liang Dong, Jinxuan Liu, Biao Qiu, Jing Chai

    "The Cenozoic unconsolidated strata in the east area of China are composed of clay, sandy clay, fine sand, hardpan, etc. Numerous shafts of the coal mines in these areas have been damaged in various d

    Jan 1, 2010

  • SME-ICGCM
    Subsidence Monitoring Results, Thick Seam Longwall Mining In Wyoming

    By Collin L. Stewart

    A summary of the results of a limited subsidence monitoring program at Cyprus Amax Coal Company's Shoshone Mine No. 1 in the Hanna Basin of south central Wyoming is presented. The monitoring prog

    Jan 1, 1995

  • SME-ICGCM
    The Relationship between Ultrasonic Velocities and Mechanical Damage in Sandstone under Cyclic Loading

    By Hongwei Zhang, Sen Yang, Shimin Liu

    "This laboratory study investigates the damage evolution of sandstone specimens under two types of cyclic loading conditions through monitoring and analyzing the variations of elastic moduli and ultra

    Jan 1, 2017

  • SME-ICGCM
    Multi?stage Testing Procedures, Verification, and Results for Strong, Brittle Sandstone

    By Michael Murphy

    A multi-stage triaxial procedure has been developed for the enhanced servo controls and feedback systems at the National Institute for Occupational Safety and Health (NIOSH) rock mechanics laboratory.

    Jan 1, 2014

  • SME-ICGCM
    The Mechanical Property Of Coal Containing Gas (d5aeba01-a0db-4f86-a21e-adbcc6290eab)

    By Yao Yuping

    The strength and deformation of more than two hundred coal samples have been tested in the condition of triaxial compression. The regression equation showing the relationship between coal strength and

    Jan 1, 1992

  • SME-ICGCM
    Three?Dimensional Ground Stability Study Around a Mine Tunnel in a Highly Discontinuous Rock Mass under Significant in Situ Stress

    By Pinnaduwa H. S. W. Kulatilake

    To exploit an underground mine effectively and safely, it is important to have a good understanding of the geotechnical behavior of the rockmass surrounding the underground mine excavation. The aim of

    Jan 1, 2013

  • SME-ICGCM
    Estimating Coal Pillar Strength for Low Coal Seam

    By Andre Cezar Zingano

    "The objective of this paper is to estimate the coal seam strength and the pillar safety factor for low coal seams using back analysis and rock mass characterization. The coal seam strength is very im

    Jan 1, 2015

  • SME-ICGCM
    An Integrated Approach to the Monitoring and Modeling of Ground Movements

    By A. Chrzanowski

    The integrated approach to monitoring surveys is based on a simultaneous utilization of geodetic, photogrammetric and geotechnical measurements of displacements, tilts, strains and any other geometric

    Jan 1, 1984

  • SME-ICGCM
    Slope Stability at Open Cut Mining Due to Subsidence on Old Underground Mining Area

    By Andre Zingano

    An underground mine using room and pillar and retreat mining methods was developed during the 1950?s. In 2009 an open cast mine was opened in the same reserve with the objective of mining five coal se

    Jan 1, 2013

  • SME-ICGCM
    Numerical Modelling Based Investigation of Coal Pillar Stability for Room and Pillar Development at 900 m Depth of Cover

    By Ashok Kumar, Rajendra Singh, Petr Waclawik

    High-grade coal is locked in the shaft protective pillars at 900 m below surface in the Czech part of Upper Silesian Coal Basin. To optimise recovery of coal from the larger size shaft protective pill

    Jan 1, 2018

  • SME-ICGCM
    Pillar Design In Bump-Prone Deep Western U.S. Coal Mines (e849bf38-924c-4a19-8729-5910f69616a3)

    By N. P. Kripakov

    This paper presents a brief overview of current bump mechanics theories and pillar design methodologies, and relates these concepts to experiences at two mines located in a north-central Utah coalfiel

    Jan 1, 1992

  • SME-ICGCM
    Evaluation Of Mobile Roof Support Technologies

    By Hamid Maleki

    This study presents a historic overview of the role of mobile roof support (MRS) technologies in improving stability and worker safety and presents the results of recent field evaluations of the MRS l

    Jan 1, 2001

  • SME-ICGCM
    Gateroads Layout and Entry Support in a Western Longwall Coal Mine in China

    By WenFeng Li

    Comparing to the coal seams in Eastern China, the coal seams in Western China usually have better geological conditions. Therefore, changes in the conventional gateroads layout are required for the We

    Jan 1, 2013

  • SME-ICGCM
    Management of Floor Heave at Bulga Underground Operations—A Case Study

    By Kudret Tutuk, Serkan Saydam, Sungsoon Mo

    "This paper presents an overview of the floor heave management at the Glencore Bulga Underground Operations and investigates the contributing factors to the behaviour of the floor. The mine experience

    Jan 1, 2018

  • SME-ICGCM
    Underground Longwall Mining with the Impact of Disturbed Areas by Abandoned Gateroads and Small Gobs

    By Enguang Zhu, Kangning Zhang, Yang Li

    "Due to the use of outdated mining technology or room and pillar mining process in small coal mines, the coal recovery ratio is only 10% - 25%. In many regions of China: the damage area caused by the

    Jan 1, 2016