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  • SME-ICGCM
    A Procedure for the Rapid Assessment of Coal Mine Roof Stability against Large Roof Falls

    By Ted Klemetti, Gabriel Esterhuizen, John L. Ellenberger

    "Advanced numerical models can be used to evaluate entry support systems in coal mines. However, these methods require specialized software and specialized skills to create the models and evaluate the

    Jan 1, 2015

  • SME-ICGCM
    Moisture–Induced Swelling of Illinois Mine Roof Shales: A Visualized Method

    By Long Fan, Shimin Liu, Guijie Sang

    "Weak shale roof falls have long been the main cause for fatalities in underground coal mines. Moisture-induced swelling is one of the root causes for the degradation of roof shales. In this study, sl

    Jan 1, 2017

  • SME-ICGCM
    Research Progress on Fully Mechanized Mining Technology of Steeply Dipping Seams

    By Hongwei Wang, Hao Zhang, Panshi Xie, Xicai Gao, Youfu Zeng, Yongping Wu, Juan Dou

    "The reserves and production of steep coal seams account for approximately 15–20% of the total coal reserves in China and 5–10% of the total annual coal production. More than 50% of the coal is high-q

    Jan 1, 2017

  • SME-ICGCM
    Numerical Model Calibration for Simulating Coal Ribs (da729951-bd49-415c-b364-03a4e38bfd9c)

    By Michael Murphy, Khaled M. Mohamed, Berk Tulu

    "Failures of coal ribs are major hazards in underground coal mines. For the period of 2010 to 2014, rib falls were the leading cause of groundfall fatalities and accounted for 35% of all groundfall-re

    Jan 1, 2016

  • SME-ICGCM
    A Liquid Settlement System for Measuring Roof Sag During Development Mining - A Comparison Between Place Change Mining and a Miner?Bolter

    By Andy L. Shaffer

    A novel liquid settlement system (LSS) was installed in advance of mining at a western United States (U.S.) longwall mine to measure total roof sag from the time of cutting to days after mining during

    Jan 1, 2014

  • SME-ICGCM
    Historical Perspective And Future Projection Of Longwall Mining In The United States (19eaaffe-326c-46a4-9a81-dc104b2df560)

    By Thomas M. Barczak

    This report chronicles the historical development of longwall mining in the United States and speculates on future developments to the turn of the century. Five eras of technological development durin

    Jan 1, 1992

  • SME-ICGCM
    Coal Pillar Design in Tabas Central Mine of Iran

    By Mostafa Sharifzadeh, Ebrahim Ghasemi, Kourosh Shahriar

    "The Tabas Central Mine (TCM) is one of the underground coal mines located in the Tabas coal region, in the mid-eastern part of Iran. This mine is the first mechanized coal mine in Iran that uses the

    Jan 1, 2010

  • SME-ICGCM
    Theoretical Analysis and Field Application of Solid Backfilling Method for Preventing Hard–Roof–Induced Rock Bursts

    By Nan Zhou, Jixiong Zhang, Qiang Zhang

    "Mining activities under hard roof could easily induce rock burst. Based on the geological conditions of widespread hard roof in China, this paper discusses the type, mechanism of occurrence and preve

    Jan 1, 2015

  • SME-ICGCM
    The Caterpillar HW300 Quickscan

    By Pieter-Jan Kleiterp

    Caterpillar has been involved in highwall mining since the purchase of Bucyrus in 2011. The Cat® HW300 is a continuation of the Superior Highwall Miner that was first sold in the USA in 1994. Currentl

    Jan 1, 2014

  • SME-ICGCM
    Risk Analysis and Risk Ranking in Tunneling: A Case Study

    By Behdeen Oraee

    Constructing tunnels underground is generally described as a high-risk activity because conditions in the surrounding area tend to be unpredictable. This would and can create unique dangers in every s

    Jan 1, 2014

  • SME-ICGCM
    Catastrophic Collapse Of Highwall Web Pillars And Preventative Design Measures

    By Karl Zipf

    In highwall mining, once a sufficient number of web pillars are developed, they can fail catastrophically in a domino-type failure, posing a safety hazard to highwall miners and sterilizing mineable r

    Jan 1, 1999

  • SME-ICGCM
    Roof Bolter Synthetic Mesh Handling System

    By Jonathan Duncan, Tim Burgess, William Kendall, Jens Lange

    "Steel wire mesh is the accepted standard for roof and rib skin control at most coal mines in the United States. Wire mesh is delivered to the mine in bundles that are heavy and awkward to handle. The

    Jan 1, 2010

  • SME-ICGCM
    Economic Impact of Ascending Mine?Waters in Germany

    By Axel Preusse

    Due to a political decision, German hard coal mining will come to an end in the year 2018. By then, there will have been more than 150 years of industrial grade mining activities. Located in the weste

    Jan 1, 2013

  • SME-ICGCM
    Unanticipated Multiple Seam Stresses From Pillar Systems Behaving As Pseudo Gob - Case Histories

    By Michael Gauna, Christopher Mark

    "Underground coal mining in the U.S. is conducted in numerous regions where previous workings exist above and/or below an actively mined seam. Miners know that overlying or underlying fully extracted

    Jan 1, 2016

  • SME-ICGCM
    The New Two-Dimension LaModel Program

    By Olayemi Akinkugbe

    As coal production in the United States continues to increase, the availability of unexploited or virgin fields continue to diminish. As a result, mine operators are forced to mine in unfavorable or m

    Jan 1, 2004

  • SME-ICGCM
    A Resin Quality Testing Procedure for Collieries

    By D. Minney

    The quality of resin used in South African collieries is currently controlled according to South African Bureau of Standards, "SABS-1534:2002". It has however been found that resin which passed the SA

    Jan 1, 2005

  • SME-ICGCM
    Coal Pillar Life Prediction in the Vaal Basin, South Africa

    By J. Nielen van der Merwe

    This investigation was done to develop a method to predict the lie of coal pillars. It has long since been known that coal pillars deteriorate over time, but there was no method to quantify the deteri

    Jan 1, 1998

  • SME-ICGCM
    Mitigating Longwall Subsidence Effects on a Large Industrial Building

    By Yi Luo

    The efforts to mitigate longwall subsidence influences on various residential and farming structures by many coal mining companies have been successful in the recent years (Luo, et al, 2003). The succ

    Jan 1, 2005

  • SME-ICGCM
    Inflatable Rock Bolt Bond Strength vs. Rock Mass Rating (RMR): A Comparative Analysis of Pull–Out Testing Data from Underground Mines in Nevada

    By Chase K. Barnard, Rahul Thareja, Sean Warren, Rajagopala Kallu

    "Inflatable rock bolts are commonly utilized for ground support in Nevada underground mines, however, there is limited information regarding what factors influence the bond strength of these bolts. Bo

    Jan 1, 2015

  • SME-ICGCM
    Think Like a Rock

    By Tom Barczak

    Early in my career, while giving a presentation on shield design for longwall mining at one of the International Conferences on Ground Control in Mining, the late Jim Scott told me that I was finally

    Jan 1, 2011