Ground Motion and Air Blast Measurements on Shot 6M of Diamond Ore (PIFR-436) PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Ground Motion and Air Blast Measurements on Shot 6M of Diamond Ore (PIFR-436) PDF full book. Access full book title Ground Motion and Air Blast Measurements on Shot 6M of Diamond Ore (PIFR-436) by Coye T. Vincent. Download full books in PDF and EPUB format.
Author: Coye T. Vincent
Publisher:
ISBN:
Category : Blast effect
Languages : en
Pages : 84
Get Book Here
Book Description
On Diamond Ore shot 6M, a 17 ton charge of nitromethane located at a depth of burial of 5.85 meters (19.2 feet) in Bear Paw clay shale, Physics International Company measured (1) shock velocity up the unstemmed hole from charge surface to the ground surface, (2) stress at three locations along two radial lines 90 degrees apart, (3) horizontal and vertical particle velocity at one location along each radial line, and (4) airblast overpressures at the ground surface. Shock velocity up the unstemmed hole was twice the predicted value. Peak stresses were lower than predictions. Difficulties were encountered in measuring particle velocity because accelerations were higher than expected. Surface-level peak overpressures were greater than predicted for a buried TNT charge and less than the Sprint in-cell measurements.
Author: Coye T. Vincent
Publisher:
ISBN:
Category : Blast effect
Languages : en
Pages : 84
Get Book Here
Book Description
On Diamond Ore shot 6M, a 17 ton charge of nitromethane located at a depth of burial of 5.85 meters (19.2 feet) in Bear Paw clay shale, Physics International Company measured (1) shock velocity up the unstemmed hole from charge surface to the ground surface, (2) stress at three locations along two radial lines 90 degrees apart, (3) horizontal and vertical particle velocity at one location along each radial line, and (4) airblast overpressures at the ground surface. Shock velocity up the unstemmed hole was twice the predicted value. Peak stresses were lower than predictions. Difficulties were encountered in measuring particle velocity because accelerations were higher than expected. Surface-level peak overpressures were greater than predicted for a buried TNT charge and less than the Sprint in-cell measurements.
Author:
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 882
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages :
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 462
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 908
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Airblast measurements were made with two gages at each of three separate distances from the 20 cratering shots of Project Diamond Ore, Phase IIB. There were seven unstemmed single-charge shots, three unstemmed row-charge shots with three charges, three stemmed row-charge shots with five charges, two stemmed row-charge shots with three charges, and four shots with charges at or near the ground surface. Weights of individual charges ranged from 80 to 34,000 lbs. The unstemmed single-charge shots varied in depth of burial and permitted the attenuation of airblast parameters to be defined as a function of these depths. No comparison of the stemmed row-charge airblast with that from stemmed single charges was possible because no single charges have been fired in the same medium. No comparison was made for single-and row-charge unstemmed detonations because of differences in explosive, charge size, charge burial depth, and open-hole diameter. Differences in airburst from surface and near-surface bursts resulting from variances in charge position were less than differences caused by meteorological changes on the days the shots were fired. The single-charge data provided a further opportunity to evaluate the usefulness of airburst suppression with charge burial depth and stemming as an analog to suppression of radioactivity from nuclear cratering explosions, Airblast gas-venting impulse fractions out of the ground were in agreement with those obtained on one shot for radioactivity fraction using a radioactivity simulant. Airblast as an indicator of suppression has the advantage of being less dependent on local wind conditions.
Author: Arild Palmstrom
Publisher: ICE Publishing
ISBN: 9780727759955
Category : Technology & Engineering
Languages : en
Pages : 0
Get Book Here
Book Description
Rock Engineering is a valuable reference tool for geotechnical engineers, geologists, consultants, contractors, and advanced students on rock engineering and engineering geology courses.
Author: E.T. Brown
Publisher: CRC Press
ISBN: 1482288923
Category : Architecture
Languages : en
Pages : 532
Get Book Here
Book Description
Underground Excavations in Rock deals with the geotechnical aspects of the design of underground openings for mining and civil engineering processes.
Author: D. C. Sachs
Publisher:
ISBN:
Category : Blast effect
Languages : en
Pages : 118
Get Book Here
Book Description
Project 1.7 of Operation TEAPOT was concerned with the measurement of surface and subsurface effects of an underground explosion of a 1.2-kt nuclear burst (Shot 7). The measurements included free-field earth and airblast effects, as well as loading on underground structural devices. This report deals with the presentation and analysis of the free-field data only; the structural data have been transmitted to the appropriate agencies for their analysis. From the 76 channels installed on TEAPOT Shot 7, 75 usable records were obtained. The free-field quantities measured include air-blast pressure, earth acceleration, earth stress and strain, and permanent earth displacement. The results are discussed by phenomenon and, in each case, the TEAPOT data are compared with pretest predictions. Also, where data are available, comparisons are made with previous underground nuclear test results. Some aspects of seismology and soil mechanics as applied to underground explosion phenomena are presented and, finally, the most pertinent high explosives results from subsequent tests conducted at the TEAPOT location are summarized. (Author).
Author: Richard John Huggett
Publisher: Routledge
ISBN: 1135281130
Category : Science
Languages : en
Pages : 909
Get Book Here
Book Description
This extensively revised, restructured, and updated edition continues to present an engaging and comprehensive introduction to the subject, exploring the world’s landforms from a broad systems perspective. It covers the basics of Earth surface forms and processes, while reflecting on the latest developments in the field. Fundamentals of Geomorphology begins with a consideration of the nature of geomorphology, process and form, history, and geomorphic systems, and moves on to discuss: structure: structural landforms associated with plate tectonics and those associated with volcanoes, impact craters, and folds, faults, and joints process and form: landforms resulting from, or influenced by, the exogenic agencies of weathering, running water, flowing ice and meltwater, ground ice and frost, the wind, and the sea; landforms developed on limestone; and landscape evolution, a discussion of ancient landforms, including palaeosurfaces, stagnant landscape features, and evolutionary aspects of landscape change. This third edition has been fully updated to include a clearer initial explanation of the nature of geomorphology, of land surface process and form, and of land-surface change over different timescales. The text has been restructured to incorporate information on geomorphic materials and processes at more suitable points in the book. Finally, historical geomorphology has been integrated throughout the text to reflect the importance of history in all aspects of geomorphology. Fundamentals of Geomorphology provides a stimulating and innovative perspective on the key topics and debates within the field of geomorphology. Written in an accessible and lively manner, it includes guides to further reading, chapter summaries, and an extensive glossary of key terms. The book is also illustrated throughout with over 200 informative diagrams and attractive photographs, all in colour.
