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Author : J. Donald Day
Publisher :
ISBN 13 :
Total Pages : 152 pages
Book Rating : 4.:/5 (359 download)
Download or read book Project Pre-Gondola I written by J. Donald Day and published by . This book was released on 1967 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Paul R. Fisher
Publisher :
ISBN 13 :
Total Pages : 90 pages
Book Rating : 4.3/5 (91 download)
Download or read book Project Pre-GONDOLA I written by Paul R. Fisher and published by . This book was released on 1969 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report presents the results of preshot and postshot geologic and engineering properties investigations performed in conjunction with the Project Pre-Gondola I cratering experiment series. The Pre-Gondola I series consisted of the detonation of four 20-ton HE charges at varying depths of burst in highly over-consolidated Bearpaw clay shale at Fort Peck, Montana. Detailed surface and subsurface postshot investigations were conducted at the Bravo crater. Surface postshot investigations only were conducted at the other crater sites. (Author).
Author : Walter C. Day
Publisher :
ISBN 13 :
Total Pages : 80 pages
Book Rating : 4.3/5 (91 download)
Download or read book Project Pre-GONDOLA I written by Walter C. Day and published by . This book was released on 1967 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: The clouds resulting from four 20-ton nitromethane cratering explosions in a wet clay shale medium were studied by photographic analysis and lidar (laser-radar) tracking. A technique for detecting tracers in future events in the same medium was investigated. (Author).
Author : Maurice K. Kurtz (Jr.)
Publisher :
ISBN 13 :
Total Pages : 84 pages
Book Rating : 4.3/5 (91 download)
Download or read book Project Pre-GONDOLA written by Maurice K. Kurtz (Jr.) and published by . This book was released on 1968 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of intermediate range ground motions and of structural response were made during the Pre-Gondola high explosive cratering experiments at Fort Peck, Montana. Liquid nitromethane charges (1000-lb and 20-ton), emplaced at various depths of burst, and a 140-ton row charge were detonated in the Bearpaw shale, which is a weak, wet clay-shale medium. An additional experiment to validate a charge emplacement concept designed to decouple seismic energy proved inconclusive. All seismic measurements were of particle velocity. Using an inverse power law equation to describe the attenuation of seismic amplitudes with distance, it is found that the amplitudes from the single charges decayed as approximately R( -2.4), and amplitudes from the row-charge decayed as R( -1.7). A dependence of amplitudes on depth of burst exists, and a yield scaling exponent near 0.8 appears to be appropriate. It is suggested that a variation of particle velocity with distance as R( -A)e( -kfR), where f is the signal frequency, is a more physically realistic description of attenuation than is the inverse power law. The preliminary data from the 140-ton row charge appear to fit this type of attenuation law, and indicate that A = 0.5 and k = 0.015 sec/km. An estimate is made of the near-source variation of peak seismic amplitude with frequency for the row charge, and predictions are made for possible future row-charge cratering experiments at the site.
Author : Dean V. Power
Publisher :
ISBN 13 :
Total Pages : 56 pages
Book Rating : 4.3/5 (91 download)
Download or read book Project Pre-GONDALA I written by Dean V. Power and published by . This book was released on 1967 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Dean V. Power
Publisher :
ISBN 13 :
Total Pages : 82 pages
Book Rating : 4.3/5 (91 download)
Download or read book Project Pre-GONDALA written by Dean V. Power and published by . This book was released on 1968 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ground motion records from seven high explosive cratering events in northeastern Montana were analyzed for peak velocity, power spectral density, and velocity spectra. The events included four 20-ton single charges at depths of burst which varied from 42 to 57 ft, a 140-ton row charge consisting of three 20-ton charges and two 40-ton charges at optimum depths of burst, and a fully coupled charge of 0.5 tons and a decoupled charge of 0.5 tons at optimum depths of burst. It was found that at these depths and charge weights an increase in depth of burst resulted in an increase in peak velocities and power spectral densities as measured at distant points (>5 km), while no significant frequency shifts were noted. Power spectral density was found to be approximately proportional to the first power of yield. For this region it was determined that power spectral densities varied inversely as radius to the 3.55 power, and peak velocities varied inversely as radius to the 1.6 power. An increase in both velocities and power spectral densities for small decoupling factors was found to occur for a certain explosive-cavity configuration. Three analysis techniques, peak velocity, velocity spectra, and power spectral density, are compared and it is shown that power spectral density is the most consistent method when comparing records from different measuring stations.
Author : Jerome E. Lattery
Publisher :
ISBN 13 :
Total Pages : 80 pages
Book Rating : 4.:/5 (359 download)
Download or read book Project Pre-Gondola III written by Jerome E. Lattery and published by . This book was released on 1970 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Charles E. Joachim
Publisher :
ISBN 13 :
Total Pages : 84 pages
Book Rating : 4.:/5 (359 download)
Download or read book Project Pre-Gondola II written by Charles E. Joachim and published by . This book was released on 1968 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Bruce B. Redpath
Publisher :
ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.3/5 (91 download)
Download or read book Project Pre-GONDALA III written by Bruce B. Redpath and published by . This book was released on 1971 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1969 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Joseph Briggs
Publisher :
ISBN 13 :
Total Pages : 104 pages
Book Rating : 4.:/5 (359 download)
Download or read book Project Armor Obstacle II written by Joseph Briggs and published by . This book was released on 1973 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 1142 pages
Book Rating : 4.3/5 (91 download)
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1973 with total page 1142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : U.S. Atomic Energy Commission
Publisher :
ISBN 13 :
Total Pages : 92 pages
Book Rating : 4.3/5 ( download)
Download or read book Plowshare Program During ... written by U.S. Atomic Energy Commission and published by . This book was released on with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : U.S. Atomic Energy Commission
Publisher :
ISBN 13 :
Total Pages : 802 pages
Book Rating : 4.3/5 (91 download)
Download or read book Annual Report to Congress of the Atomic Energy Commission written by U.S. Atomic Energy Commission and published by . This book was released on 1967 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : U.S. Army Engineer Waterways Experiment Station
Publisher :
ISBN 13 :
Total Pages : 430 pages
Book Rating : 4.:/5 (319 download)
Download or read book List of Publications of the U.S. Army Engineer Waterways Experiment Station written by U.S. Army Engineer Waterways Experiment Station and published by . This book was released on 1976 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Waterways Experiment Station (U.S.)
Publisher :
ISBN 13 :
Total Pages : 232 pages
Book Rating : 4.:/5 (359 download)
Download or read book Annotated Bibliography of Explosive Excavation Related Research written by Waterways Experiment Station (U.S.) and published by . This book was released on 1972 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: [Describes all reports prepared from fiscal years 1962-72.]
Author : United States. Army. Corps of Engineers
Publisher :
ISBN 13 :
Total Pages : 438 pages
Book Rating : 4.F/5 ( download)
Download or read book List of Publications of the U.S. Army Engineers Waterway Experiment Station written by United States. Army. Corps of Engineers and published by . This book was released on 1976 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
