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Proceedings of the Second U.S. Water Jet Conference Held in 1983 at the University of Missouri-Rolla

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Proceedings of the Second U.S. WATER JET CONFERENCE May 24-26, 1983 Rolla, Missouri Edited by: David A. Summers and Frank F. Haston Sponsored by School of Mines & Metallurgy, University of Missouri-Rolla Published by: University of Missouri-Rolla, Rolla, Missouri 65401 The University of Missouri-Rolla has granted the WaterJet Technology Association the right to reprint, on the Association's web site, the Proceedings of the Second U.S. Water Jet Conference held in 1983 at the University of Missouri-Rolla. Please Note. This text is a scanned in version of the original. Because of some limitations in our programming the original pagination has been changed. Other than that we have tried to make the text a little more readable by increasing the spacing between paragraphs, but the text itself has been (subject to possible OCR misinterpretations) left as written. 2nd U. S. WATER JET CONFERENCE TABLE OF CONTENTS SESSION 1 - THEORETICAL Chairman: Dr. William Cooley, Terraspace, Rockville, Maryland Dimensionless Pipe Length Analysis for Jet Modulation Systems J.L. Evers, D.L. Eddingfield and J.Y. Yuh College of Engineering and Technology Southern Illinois University at Carbondale Carbondale, Illinois 62901 An Analysis of One Possibility for Pulsating a High Pressure Water Jet M. Mazurkiewicz Rock Mechanics/Explosives Research Center University of Missouri - Rolla Rolla, Missouri 65401 Standoff Distance Improvement Using Percussive Jets E.B. Nebeker Scientific Associates, Inc. Santa Monica, California The Focused Shock Technique for Producing Transient Water Jets G. Gustafsson Department of Mechanical Engineering University of Colorado Boulder, Colorado 80309 SESSION 2 - EXPERIMENTAL & EQUIPMENT Chairman: Dr. Fun Den Wang, Colorado School of Mines, Golden, Colorado Nozzle Design for Coherent Water Jet Production M.K. Jackson Department of Chemical Engineering Exeter University Exeter, Devon, United Kingdom T.W. Davies Department of Chemical Engineering Louisiana State University Baton Rouge, Louisiana 70303 Visualization of the Central Core of High-Speed Water Jets - An Infrared Technique E.B. Nebeker and J.B. Cramer Scientific Associates, Inc. Santa Monica, California An Extrusion-Type Pulsed Jet Device L.L. Pater and P.H. Borst Advanced Technology Department Dravo Corporation Pittsburgh, Pennsylvania Laboratory Investigation of Soil Cutting With a Water Jet D.K. Atmatzidis Department of Civil Engineering University of Patras Patras, Greece F.R Ferrin U.S. Army Corps of Engineers Development of Variable Delivery Triple Reciprocating Plunger Pump for Water Jet Cutting M. Nakaya, N. Nishida and T. Kitagawa Sugino Machine Limited Japan SESSION 3 - CLEANING I Chairman: Dr. Jim Reichman, Flow Industries, Inc., Kent, Washington The “Skipjack” Sewer Cleaning Nozzle M.H. Ewald WOMA Corporation 242 St. Nicholas Avenue South Plainfield, New Jerse 07080 Hydro-Blasting Safety C.W. Adaway, J.F. Hinrichs and J.D. Frye Hydro-Services, Inc. Missouri City, Texas Developments in Cleaning Coke Oven Doors P.H. Donnan Jetin Sullair, Inc. 5131 N.E. Union Avenue Portland, Oregon 97211 Optimizing Jet Cutting Power for Tube Cleaning J.E. Wolgamott and G.P. Zink StoneAge, Inc. Durango, Colorado SESSION 4 - CLEANING II Chairman: Dr. David Eddingfield, Southern Illinois University, Carbondale, Illinois Considerations in the Comparison of Cavitating and Plain Water Jets D.A. Summers Rock Mechanics/Explosives Research Center University of Missouri - Rolla Rolla, Missouri 65401 Water Jet Cleaning Speeds-Theoretical Determinations C.W. Zublin Zublin & Company 2116 24th Street, Suite 2 Bakersfield, California 93301 Cleaning and Cutting with Self-Resonating Pulsed Water Jets G.L. Chahine, A.F. Conn, V.E Johnson Jr. and G.S. Frederick Hydronautics, Incorporated Laurel, Maryland 20707 SESSION 5 - MINING I Chairman: Dr. Mike Hood, University of California-Berkeley, Berkeley, California Drilling Bore Holes in Coal Mines Using H.P. Water B.H. Becker Steinkohlenbergbauverein Essen, West Germany B.H. Schmidt WOMA-Apparatebau Duisburg, West Germany A Status Report on the Conceptual Design of a Semiautonomous Mining System M.D. Gangal, L. Isenberg and E.J. Dutzi Hydraulic Mining Experiments in an Underground Mine in the St. Peter Sandstone, Clayton, Iowa G.A. Savanick U.S. Department of the Interior Bureau of Mines Minneapolis, Minnesota 55417 Use of High Pressure Water Jets for Cutting Granite R.J. Raether and R.G. Robison Hi-Tec, Incorporated Milbank, South Dakota D.A. Summers Rock Mechanics/Explosives Research Center University of Missouri - Rolla Rolla, Missouri 65401 Jet-Miner Surface and In-Seam Trials Run by Bergbau-Forschung GMBH, Germany E.H. Henkel Department and Test Side Coal Winning, Conveying, Face-End-Systems Bergbau-Forschung GMBH Federal Republic of Germany SESSION 6 - MINING II Chairman: Dr. George Savanick, Bureau of Mines, Minneapolis, Minnesota Some Patterns of Technology Transfer and Utilization in Water Jet Cutting W.E. Souder Bureau of Mines University of Pittsburgh Pittsburgh, Pennsylvania R.J. Evans Pittsburgh Research Center Bureau of Mines U.S. Department of the Interior Bruceton, Pennsylvania The New Technology of High Pressure Jet Cutting and the Development of Suitable Machinery for its Application I.K. Spies Institut fηr Bergbaukunde II Rheinisch-Westf≅lische Technische Hochschule Aachen 5100 Aachen Federal Republic of Germany Hydraulic Mining Studies of Storm King Mines S.S. Arentz III Storm King Mines, Inc. 5335 West 48th Avenue, Suite #350 Denver, Colorado 80212 Secondary Fragmentation with Water Jets D. Eddingfield, J. Evers and J.D. Morrow Jr. Engineering Mechanics/Materials Department Southern Illinois University-Carbondale Carbondale, Illinois Status of Hydraulic Coal Fining in People’s Republic of China F.D. Wang Colorado School of Mines Golden, Colorado Preliminary Practice in the Use of a Swing-Oscillation Water Jet in Coal Nine Drivage C. Dazhong, Z. Changsheng, T. Benzhao, L. Guolin, L. Yiming Hydraulic Machinery Research Office Automatical Engineering Department X. Chengliang Mechanics Research Office Basic Engineering Department China Institute of Mining The People’s Republic of China SESSION 7 - CIVIL & INDUSTRIAL Chairman: H.S. Stephens, BHRA Fluid Engineering, United Kingdom A Review of Methods for Cutting Concrete C.R. Styron III Pavement Systems Division Geotechnical Laboratory U.S. Army Engineer Waterways Experiment Station Vicksburg, Mississippi 39180 Feasibility Study of Cutting Some Materials of Industrial Interest With High Pressure Water Jets M.M. Vijay and W.H. Brierley Gas Dynamics Laboratory Division of Mechanical Engineering National Research Council of Canada Ottawa, Ontario, Canada, K1A 0R6 Jet Notching Used in the Construction of a Chemical Waste Isolation Barrier T. Brunsing Foster-Miller, Inc. Waltham, Maine The Further Development of an Underground Cable Following Tool J.M. Reichman, D.P. Kelley and M. Marvin Flow Industries, Inc. Kent, Washington 98032 SESSION 8 - WATER JET ASSIST Chairman: Bob Evans, Bureau of Mines, Pittsburgh, Pennsylvania Water Jet Assisted Mining Tools: What Type Assistance and What Type Mining Machine? L.M. Ford Geotechnical Engineering Division Sandia National Laboratories Albuquerque, New Mexico 87185 High-Pressure Water Jet-Assisted Tunneling Techniques W. Knickmeyer Essen, Bergbau-Forschung GMBH Federal Republic of Germany L. Baumann Langenberg, Bergbau-Forschung GMBH Federal Republic of Germany Design and Operation of Two Large-Scale Laboratory Rock Drilling and Boring Equipment for Water-Jet Rock Cutting Research L. Ozdemir, R. Miller and W. Sharp Earth Mechanics Institute Colorado School of Mines Golden, Colorado 80401 Hybrid Rock Cutting: Fundamental Investigations and Practical Applications O. Tecen Mining Division Etibank, Turkey R.J. Fowell University of Newcastle upon Tyne United Kingdom Schemes of Coal Massif Breakage by Disc Cutter and High-Velocity Water Jet I.A. Kouzmich and V.G. Merzlyakov Skochinsky Institute of Mining 140004, U.S.S.R. Discussion of Dr. Mike Hood's oral presentation M. Hood University of California Hearst Mining Building Berkeley, California 94709 SESSION 9 - ABRASIVE INJECTION Chairman: Dr. Andrew Conn, Hydronautics, Inc., Laurel, Maryland Experimental Studies of Cutting with Abrasive Waterjets M. Hashish Flow Industries, Incorporated Kent, Washington Cutting with Abrasive Waterjets M. Hashish, W.V. Loscutoff and P. Reich Flow Industries, Incorporated Kent, Washington Cutting Hard Rock With Abrasive-Entrained Waterjet at Moderate Pressures G.G. Yie Fluidyne Corporation Auburn, Washington 98002 Abrasive Injection Usage in the United Kingdom N.J. Griffiths Sheldon Industrial Equipment Birmingham, England Economic Considerations in Water Jet Cleaning S.P.D. Swan Reliance Hydroteck, Ltd. England A presentation by Dr. W.G. Howells of Berkeley Chemical Research, entitled “Polymer Blasting - A Chemist’s Point of View,” given at the Water Jet Shortcourse, University of Missouri - Rolla, May 23, 1983. DIMENSIONLESS PIPE LENGTH ANALYSIS FOR JET MODULATION SYSTEMS J. L. Evers, D. L. Eddingfield and J. Y. 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