Search Documents

Search Again

Search Again

Refine Search

Publication Date
Clear

Refine Search

Publication Date
Clear
Organization
Organization
  • SME-ICGCM
    Investigating Abutment Load

    By Ihsan Berk Tulu

    In the Analysis of Retreat Mining Pillar Stability (ARMPS) program, the magnitude of the abutment loading adjacent to a gob area is calculated using an ?abutment angle? concept. The extent of the abut

    Jan 1, 2012

  • SME-ICGCM
    Surface Subsidence. in Longwall Mining--A Case Stud

    By R. D. Yancich

    A case study of longwall mining surface subsidence was performed at a mine in Southwestern Pennsylvania. The mine operated in the Pittsburgh coal seam which averaged 70-72 inches with 6-8 inches draw

    Jan 1, 1984

  • SME-ICGCM
    Track Entry Deformation Subjected to Longwall Mining in the Overlying Seam: a Case Study

    By Wenbing Xie

    At Renlou Coal Mine, Huaibei Mine Area, the track entry deformed significantly after longwall mining in an overlying multiple seams. The supporting characteristics of primary roof bolts and shotcrete

    Jan 1, 2012

  • SME-ICGCM
    Caving, Seismicity, and Mine Design in Four Utah Mines

    By Hamid Maleki

    Having developed a methodology for estimating mining-induced seismicity resulting from slip along geological discontinuities in 2003, in this paper, the importance of measurements are high-lighted in

    Jan 1, 2006

  • SME-ICGCM
    Development and Field Tests of Look-Ahead Radar and Horizon Sensing for Coal Cutting Drums

    By Gerald L. Stolarczyk

    Safe and efficient coal extraction requires advanced radar subsystems that can be mounted on cutting drums of coal cutting machines. A look-ahead radar (LAR) must solve the radio geophysics problem o

    Jan 1, 2006

  • SME-ICGCM
    State-Of-The-Art Room-And-Pillar Retreat Mining In The Kittanning Coalbed (6805422e-8080-42ac-9a3a-30ed4eeda62f)

    By Alan A. Campoli

    The U.S Bureau of Mines is conducting research to develop improved guidelines for selecting the type and pattern of roof support in different geologic environments (Mucho, et al., 1995). As a part of

    Jan 1, 1996

  • SME-ICGCM
    Towards a Real Time Response to Changing Strata Conditions on a Longwall

    By P. Trueman

    A project is underway to convert a validated methodology to a system that will permit the near real time interpretation of loading data from longwall powered supports, allowing rapid adaptation of min

    Jan 1, 2006

  • SME-ICGCM
    Prediction of surface movement with emphasis on horizontal deformation due to mining

    By Mao Bai

    In predicting the integrity of under-mined structures, surface horizontal displacements and curvatures are frequently of greater importance than the more homogeneous vertical displacements. Accurate e

    Jan 1, 1989

  • SME-ICGCM
    Global Trends in Coal Mine Horizontal Stress Measurements

    By Christopher Mark

    Knowledge of in situ stresses is fundamental to many studies in earth sciences, and coal mine ground control is no exception. During the past 20 years, it has become clear that horizontal stress is

    Jan 1, 2008

  • SME-ICGCM
    New Monitoring Technologies for Measuring the in-situ Performance of Rock Bolts

    By Hani Mitri

    Understanding the interaction between rock bolts and underground rock movement is critical for safe and cost effective underground excavation design. Although early research on this subject involved a

    Jan 1, 2012

  • SME-ICGCM
    Recent Trends of Coal and Gas Outburst Accidents in China

    By Ming Ju Liu

    China has been suffering from the most serious coal and gas outburst accidents. The situation has become worse than ever with the mining of deeper coal seams at higher production rates in a more compl

    Jan 1, 2008

  • SME-ICGCM
    Monitoring Coal Mine Seismicity with an Automated Wireless Digital Strong-Motion Network

    By Peter Swanson

    A seismic monitoring network has been installed in western Colorado (USA) in the vicinity of three underground coal mines to (i) distinguish and characterize seismic activity as either mining related

    Jan 1, 2008

  • SME-ICGCM
    Pillar Design Considering the Plastic Behavior of the Coal Seam

    By Andre Zingano

    The variation in pillar behavior at underground coal mines working in the Bonito coal seam is observed in both research and mining company case studies. There is no consistency in pillar behavior, as

    Jan 1, 2012

  • SME-ICGCM
    A Simple Tool to Measure Stress in Mine Backfill

    By A. MacG. Robertson

    A cone penetrometer has been used to assess the level of stress existing in hydraulically placed mine backill. The test apparatus was fabricated at the mine and consisted of a steel cone, connector ro

    Jan 1, 1986

  • SME-ICGCM
    Development and Application of Geotechnical and Rockmechanical Standard Planning System for Roadway Development in German Coal Mines

    By K. H. Brandt

    A standard planning system for the development of roadways was adopted for German coal mines based on the results of geotechnical and rockmechanical investigations. Its goal is to provide for sufficie

    Jan 1, 2004

  • SME-ICGCM
    Large Scale Ground Instability Caused By Failure of Underlying Pillars: A Case Study of Dynamic Multiple Seam Interaction

    By Christopher Mark

    Severe dynamic multiple seam interactions can occur when active mine workings are subsided by underlying mining activity. The most dramatic events are usually caused by longwall mining or pillar recov

    Jan 1, 2012

  • SME-ICGCM
    Three-dimensional FEM analysis to sale field measurements from deep mine accessways

    By M. J. Beus

    A shaft is truly the "lifelinen of an underground mine. Damage to the shaft lining and guides as a result of ground movement can result in serious loss of production and extensive and continual repair

    Jan 1, 1989

  • SME-ICGCM
    Ropes mine crown pillar rock mechanics

    By W. G. Pariseau

    A crown pillar cave occurred at the Ropes Mine in December, 1987, that resulted in closure of the mine. Production was resumed soon afterwards with the formulation of a rock mechanics plan designed to

    Jan 1, 1989

  • SME-ICGCM
    Roof Bolter Rocker Pad Deflector Systems (6ff5d1f9-2211-4169-8a90-2ad9493ee24a)

    By Arnold Hammons

    Automated temporary roof support (ATRS) systems have been incorporated into roof bolters since the 1970?s. During roof bolting, many injuries have occurred from large pieces of draw rock falling inby

    Jan 1, 2009

  • SME-ICGCM
    Bi-Directional Shield Recovery in a Wide Face Longwall Move with a Pre-Driven Recovery Room under Weak Roof Conditions

    By Peter Zhang

    Shield recovery in a longwall move is normally conducted from tailgate to headgate. However, if the face is wide and the immediate roof is weak, difficult conditions with considerable roof sag, excess

    Jan 1, 2007