Search Documents

Search Again

Search Again

Refine Search

Publication Date
Clear

Refine Search

Publication Date
Clear
Organization
Organization
  • SME-ICGCM
    Geophysics For The Detection Of Abandoned Mine Workings

    By Christopher Phillips

    In light of recent events in the mining industry, there has been an increasing demand for technology to detect underground voids and abandoned mine workings. This paper summarizes the use of geophysic

    Jan 1, 2003

  • SME-ICGCM
    Site Characterization For Ultra-Close Multi-Seam Mining

    By Yingxin Zhou

    Data from these field studies and previous case study data have been combined to define ultra-dose seam mining environments and relate them to observed failure conditions. A rating system for ultra-cl

    Jan 1, 1990

  • SME-ICGCM
    Surface Flooding-Considerations For Mining Facilities Site Selection

    By Daniel S. Mazzei

    This paper will be a general discussion of surface flooding considerations as they affect mining facilities site selection, based primarily on experience with several such problems with which MSHA&apo

    Jan 1, 1982

  • SME-ICGCM
    Geotechnical Planning Basis for the Optimization of Workings

    By Nikolaos Polysos

    Besides considering the given geomechanical conditions, the geological/geotechnical logging of drill cores and heading faces during the driving of parallel entries and the resulting rock classificatio

    Jan 1, 2003

  • SME-ICGCM
    A Study On The High-Water Solidifying Materials For Gob-Along Roadside Instead Of Coal Pillars

    By Yunxin Qiu

    A new technology has been introduced - the use of the High-Water Solidifying Material for providing pumped roadside supports to maintain a roadway for re-use in longwall retreating. As a gob edge supp

    Jan 1, 1992

  • SME-ICGCM
    Stability And Stress Evaluation In Mines Using In-Seam Seismic Methods

    By E. M. Williams

    The U.S. Bureau of Mines is investigating the use of in-seam seismic methods to monitor stress-induced changes in coal near the working face of longwall mines. Seismic surveys performed through a long

    Jan 1, 1994

  • SME-ICGCM
    Development of the Laboratory Short Encapsulation Pull Test for a Revised British Standard on Rock Reinforcement Components Used in Coal Mining

    By D. Bigby

    The current British Standard on rock reinforcement components used in coal mining (BS7861:1996) employs the axial double embedment tensile PET) test to determine the main system load transfer performa

    Jan 1, 2005

  • SME-ICGCM
    Manifestation Of Mine Pressure And Its Relations To Overlying Strata Movements

    By Z. C. Song

    [THIS PAPER WAS TRANSLATED FROM CHINESE TO ENGLISH BY S. S. PENG, WEST VIRGINIA UNIVERSITY] Immediately after coal extraction, the pressure that causes the movement of the surrounding strata is c

    Jan 1, 1982

  • SME-ICGCM
    Improved Pull out Strength of Fully Grouted Roof Bolts through Hole Geometry Modification

    By Luis Giraldo

    Rock bolt installation characteristics near roof falls have been identified as contributing to failure. One documented and regularly occurring failure mechanism is loss of anchorage between the grout

    Jan 1, 2005

  • SME-ICGCM
    Application in Design for Close Proximity Multi-Seem Mining

    Virtually all mineable Appalachian coal seams exist in a multi-seam environment. This makes it inevitable that most seams will eventually experience interaction induced ground control and mining probl

    Jan 1, 1987

  • SME-ICGCM
    Innovative Concept In Tailgate Entry Support: Elimination Of Crib Blocks Through Utilization Of New High Capacity Roof Truss Systems (3aab4965-6f53-4caa-9e67-bf9dbe5d5a16)

    By John C. Stankus

    In this paper, an innovative concept in longwall tailgate support is discussed. This new concept utilizes a new high capacity roof truss system in lieu of conventional wooden crib block. The first fie

    Jan 1, 1994

  • SME-ICGCM
    AMCMRR- An Analytical Model for Coal Mine Roof Reinforcement

    By Mark G. Colwell, Russell Frith

    "An Analytical Model for Coal Mine Roof Reinforcement (AMCMRR) has been developed. AMCMRR utilizes a Factor of Safety (FOS) approach, which is commonly used in all forms of engineering. The starting p

    Jan 1, 2010

  • SME-ICGCM
    Analysis of Panel Stability for Post-Mining Slurry Injection

    By Tim Ross

    Slurry injection into mined-out panels is an attractive alternative for disposal of coal preparation plant fines. however, in areas where surface subsidence cannot be tolerated, either by law or neces

    Jan 1, 1998

  • SME-ICGCM
    Machine Design Parameters For High Seam Truss Bolting Applications

    By G. Bucelluni

    An essential element of truss bolt installation requires machines to angle a hole in the top of approximately 39° to 45° from its vertical axis. Parameter which inherently effect the drill position ar

    Jan 1, 1982

  • SME-ICGCM
    Non-Destructive Testing on Fully Grouted Rockbolts

    By Dieter Wittenberg

    The use of thc ultrasound technique for monitoring rockbolt support has at last provided support engineers with a measunng system capable of pinpointing fracture failuns in fully-grouted rockbolts. Th

    Jan 1, 2001

  • SME-ICGCM
    Seam Structure - An Important Criterion for Coal Pillar Design

    By Kot F. v. Unrug

    In spite of the extensive research and accumulated experience from mining operations, an appropriate pillar design remains an open issue. Due to the shrinking reserve base, present mining operations m

    Jan 1, 2005

  • SME-ICGCM
    Entry Stability Monitoring & Analysis For Longwall & Continuous Mining Systems

    By Wm. Mark Hart

    Under a specific geological condition, roof supporting method, and pillar-entry system, an entry convergence concept may be the most effective means that can be used to effectively indicate the longwa

    Jan 1, 1995

  • SME-ICGCM
    A New Approach to the Integrity Testing of Ground Anchorages

    By Andrew Starkey

    Ground anchorage systems in the form of rock bolts are used extensively throughout the world as supporting devices for civil engineering structures such as bridges and tunnels. It is widely recognized

    Jan 1, 2001

  • SME-ICGCM
    Stability Control of Clusters of Deep Openings Around Shaft Bottom and Theory of Rock Deformation

    By Yanfa Gao

    Clusters of underground openings were developed around the shaft bottom of Tangshan Mine. They were deep and located in soft rock strata. After development, those openings have been subjected to consi

    Jan 1, 2002

  • SME-ICGCM
    In-Situ Pillar Strength Determination for Two-Entry Longwall Gates

    By H. N. Maleki

    Extensive measurements and underground observations in three Western U. S. coal mines are integrated in this paper to determine in-situ pillar load-deformation characteristics for narrow (30 it wide,

    Jan 1, 1988