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Thursday, April 23, 2020 | History

1 edition of Longwall shearer performance using water-jet-assisted cutting found in the catalog.

Longwall shearer performance using water-jet-assisted cutting

Longwall shearer performance using water-jet-assisted cutting

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Published by U.S. Dept. of the Interior, Bureau of Mines in Pittsburgh, Pa .
Written in English

    Subjects:
  • Longwall mining -- Equipment and supplies -- Testing.,
  • Water jet cutting.,
  • Coal-mining machinery -- Testing.

  • Edition Notes

    Bibliography: p. 11-12.

    Statementby P.D. Kovscek ... [et al.].
    SeriesReport of Investigations / Bureau of Mines ;, 9046, Report of Investigations (United States. Bureau of Mines) ;, 9046.
    ContributionsKovscek, P. D.
    Classifications
    LC ClassificationsTN23 .U43 no. 9046, TN292 .U43 no. 9046
    The Physical Object
    Pagination15 p. :
    Number of Pages15
    ID Numbers
    Open LibraryOL2343228M
    LC Control Number86600240


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Longwall shearer performance using water-jet-assisted cutting Download PDF EPUB FB2

LONGWALL SHEARER PERFORMANCE USING WATERJETASSISTED CUTTING By P. Kovscek,l C. Taylor,2 H. Handewith,3 and E. Thimons4 ABSTRACT The Bureau of Mines equipped a longwall shearer with a water­ jet-assisted mechanical cutting system to Cited by: 2. Longwall shearer performance using water-jet-assisted cutting [Unknown] on *FREE* shipping on Longwall shearer performance using water-jet-assisted cutting book offers.

Additional Physical Format: Online version: Longwall shearer performance using water-jet-assisted cutting. Pittsburgh, Pa.: U.S. Dept. of the Interior, Bureau of. The Bureau of Mines equipped a longwall shearer with a water-jet- assisted mechanical cutting system to determine the effect of the high-pressure sprays on machine performance, airborne dust levels generated, and size of particles formed.

Longwall shearer performance using water-jet-assisted cutting by,U.S. Dept. of the Interior, Bureau of Mines edition, in English.

The U.S. Bureau of Mines evaluated water-jet-assisted longwall shearers in full-scale laboratory tests and underground. Both test programs showed that use of high-pressure water did little to reduce the shearer motor energy required to maintain a given cutting rate.

This paper describes how the Bureau of Mines equipped a longwall shearer with a water-jet-assisted cutting system and measured dust levels during the cutting of a simulated coal block. The block Longwall shearer performance using water-jet-assisted cutting book cut dry at a conventional water spray pressure of psi, and with water-jet-assisted cutting pressures ranging from 1, to 6, psi.

"The Bureau of Mines equipped a longwall shearer with a water-jet- assisted mechanical cutting system to determine the effect of the high-pressure sprays on machine performance, airborne dust Longwall shearer performance using water-jet-assisted cutting book generated, and size of particles by: 2.

Longwall shearer performance using water-jet-assisted cutting / (Pittsburgh, Pa.: U.S. Dept. of the Interior, Bureau of Mines, ), by P. Kovscek (page images at HathiTrust) Items below (if any) are from related and broader terms. Filed under: Jet cutting. An in-seam tester, which is a hydraulically activated single-pick instrument to measure and record pick cutting forces, was designed and fabricated to establish criteria necessary for the design and development of a water-jet-assisted rotary drum cutting.

Dust control on longwall shearers using water-jet-assisted cutting / (Pittsburgh, Pa.: U.S. Dept. of the Interior, Bureau of Mines, ), by Charles D. Taylor, Edward D. Thimons, and P. Kovscek (page images at HathiTrust).

A comparative study of dust control practices in Chinese and Australian longwall coal mines Article (PDF Available) in International Journal of Mining. In book: Proceedings of the 11th International Mine Ventilation Congress (pp) The Bureau of Mines equipped a longwall shearer with a water-jet-assisted cutting system and measured dust.

Search this site Search this site. Contact & Service. Contact. Contact form; Contact persons; Sites and opening hours. This volume contains papers presented at the 11th International Conference on Jet Cutting Technology, held at St.

Andrews, Scotland, on September Jetting techniques have been successfully applied for many years in the field of cleaning and descaling. Share & Embed. Embed Script. Size (px). A review of rock cutting for underground mining: past, present, and future Particularly in tunnelling, cutting can produce excavations very close.

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Title of the Book Name of the Author/s Name of the Publisher Edition and Year Extraction of Longwall panel: working with shearer and plough, support system of longwall face and gate high pressure water jet assisted cutting. Recent Developments in rock excavation machinery.

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ISBNISSN Victor Arad, Susana Arad, Prof. Ladislau Radermacher, Cristian Radeanu, Cristian. Scribd adalah situs bacaan dan penerbitan sosial terbesar di dunia. Cutting with abrasive-waterjets has been found to consist of two modes (6,7): the. cutting wear mode occurs by the impact of particles at shallow angles (8), and the.

deformation wear mode occurs by impacts at large angles (9,10). The first mode results in. a steady-state cutting interface, while the second is unsteady.

The relative contribution of. CNC water-jet machining and cutting center. NASA Astrophysics Data System (ADS) Bartlett, D. Computer Numerical Control (CNC) water-jet machining was investigated t. Aqueous cutting fluid for machining fissionable materials.

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Full text of "Monthly catalog of United States government publications" See other formats. These machines come in various types, such as coal cutting machines used on longwall coal faces, the road header machines which have a rotating head on the end of an arm, and the full face tunneling machines often used in civil engineering projects where long lengths of relatively straight tunnel are required.

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