Search Documents

Search Again

Search Again

Refine Search

Publication Date
Clear

Refine Search

Publication Date
Clear
Organization
Organization
  • SME-ICGCM
    Behavioral Aspects of Roof/Rib Injuries--Implications for Training Utilizing Stereoscopic Photography

    By Edward A. Barrett

    A significant number of injuries resulting from fa118 of roof and rib may be avoided by modifying the reactive behavior of miners as they encounter potentially hazardous ground conditions. In 1984-85,

    Jan 1, 1986

  • SME-ICGCM
    Hydraulic Tensioning Of A Birmingham Roof Truss

    By C. W. Bollier

    In recent years, Peabody Coal Company has enjoyed a great amount of success using roof trussing as a secondary support system. Since 1975, over 180,000 trusses have been installed in 12 different Peab

    Jan 1, 1982

  • SME-ICGCM
    Statistical Regional Calibration Of Subsidence Prediction Models

    By D. N. Cleaver

    Like other influence function methods, the SWIFT subsidence prediction program, developed within the Mineral Resources Engineering Department at the University of Nottingham, requires calibration to r

    Jan 1, 1995

  • SME-ICGCM
    Specialty Truss System And Their Performance

    By Ben L. Seegmiller

    Specially truss systems? including the Intersection Truss®, Continuous Entry Truss®, Cutter Roof Truss® and Roktrus® have been used in many coal mines in the mid- west and western United States during

    Jan 1, 1990

  • SME-ICGCM
    A Design Approach For A Swelling Rock In An Underground Mine In Türkîye

    By A. G. Pasamehmetoglu

    The swelling process is an important problem causing damages to the structures in or on swelling rocks, both during construction and operating life. To understand swelling problem, a number of testing

    Jan 1, 1992

  • SME-ICGCM
    Tailgate Support Evaluation at Plateau Mining Company

    By H. N. Maleki

    This paper presents a field evaluation of six tailgate secondary support systems, with the objective of optimizing support efficiency for maintaining open gate roads. Support systems consisted of a co

    Jan 1, 1986

  • SME-ICGCM
    Heat-Imaging Experimental Study Of Reducing Local Gas Accumulation By Rotary Radial Jet

    By S. Q. Yang

    Rotary radial jet improves greatly the pulsing velocity of airflow along each direction everywhere in the entry, intensifies transverse migration of air, eliminates effectively the local gas accumulat

    Jan 1, 2004

  • SME-ICGCM
    Ground Control Problem Associated with Longwall Mining of Developed Pillars

    By T. N. Singh

    Board and pillar system of mining has beer, practised in India in view of abundant availability of cheap labour force, low investment and quick return. Subsequently, selective mining from thick seems

    Jan 1, 1984

  • SME-ICGCM
    The Application of Pre-tensioned Grouted Tendons at Harworth Colliery, UK

    By Chris Adams

    The application of pre-tensioned tendon roof support assisted Harworth Colliery in their revival, from impending closure to lowest cost deep-mined producer in the UK, over just six months last year. T

    Jan 1, 2003

  • SME-ICGCM
    Mobile Roof Support For Retreat Mining

    By H. Gene Wilson

    Mobile Roof Supports (MRS) look similar to a longwall shield on crawler tracks. The MRS units offer a safe, productive method of extracting the 40% to 60% product left normally unrecovered in room and

    Jan 1, 1990

  • SME-ICGCM
    Outbursts And Rockbursts In Coal Mines

    By Ian W. Farmer

    A description of the factors causing outbursts and rockbursts in coal mines is given. The mechanics of both outbursts and rockbursts can be described in terms of conversion of stored strain energy in

    Jan 1, 1988

  • SME-ICGCM
    Chemical Destressing to Alleviate Rockbursts

    By S. P. Singh

    Destress blasting is commonly used in the mines to minimize the occurrence of rockbursts. The fracturing created by destressing in the vicinity of the face reduces the stress concentration by pushing

    Jan 1, 1987

  • SME-ICGCM
    Visual Recognition of the Load of Roof-Bolts by an Indicator

    By Joachim Leonhardt

    Hundreds ofbolt-indicators were already used successfully in the German deep hard coal-mines to increase the safety and economy. The bolt-indicator offers the simple possibility to show roof-bolt (anc

    Jan 1, 2001

  • SME-ICGCM
    Improvement in Pre-Tensioning of Strand Bolts in Australian Coal Mines

    By Mietek Rataj

    Installation of pre-tensioned Strand Bolts i.e. resin grouted cable bolts is very common now in Australian coal mines. A short historical development of this type of rock reinforcement is outlined Var

    Jan 1, 2002

  • SME-ICGCM
    A New Rockbolt Axial Load Measuring Device

    By Hani Mitri

    A new monitoring device called SAFEBOLT (Stress And Force Evaluator in Bolts) has been recently developed. The device SAFEBOLT, essentially replaces the load cell, it permits the monitoring of bolt a

    Jan 1, 2001

  • SME-ICGCM
    Tailgate Roadway Convergence: A Key Indicator Of Potential Ground Control Problems

    By Robert M. Cox

    Abrupt tailgate roadway ground failures, described as floor bumps, sometimes occur in the tailgate entry outby the face during the high-speed extraction of coal from mechanized longwall panels. These

    Jan 1, 1994

  • SME-ICGCM
    Eclipse Bolting System

    By Alan Campoli

    The Eclipse System was developed by Minova USA Inc. formerly Fosroc Inc. to improve the performance of 5/8-inch deformed rebar fully grouted into a one inch borehole. An 1/8-inch offset bolt head comb

    Jan 1, 2003

  • SME-ICGCM
    Surface Movement of Super-wide Longwall Panels Using Top-coal Caving Method

    By Cao Shenggen

    Experiences in the developed countries have shown that continuous increase of panel width (or face length) is one of the major technical trends for high production high efficiency mines. Increasing th

    Jan 1, 2003

  • SME-ICGCM
    Experimental Study of Acoustic Emission Characteristics for Burst-prone Coal/Rock Fracture Process

    By Liu Changyou

    This paper analyzes experimentally the stress-strain relationship and the characteristics and variation trends of acoustic emission signals of the medium- and high-burst-prone coal/rock fracture proce

    Jan 1, 2003

  • SME-ICGCM
    Jointing Effects On Pillar Strength

    By Gabriel Esterhuizen

    When designing pillars in coal and hard rock mines it is necessary to determine the strength of the rock mass forming the pillars. Empirical strength equations, based on rock mass classification techn

    Jan 1, 2000