Author: J. Donald DayPublisher:
ISBN:
Category : Nuclear excavation
Languages : en
Pages : 152
Book Description
Project Pre-Gondola I
Author: J. Donald DayPublisher:
ISBN:
Category : Nuclear excavation
Languages : en
Pages : 152
Book Description
Annotated Bibliography of Explosive Excavation Related Research
Author: Waterways Experiment Station (U.S.)Publisher:
ISBN:
Category : Excavation
Languages : en
Pages : 232
Book Description
[Describes all reports prepared from fiscal years 1962-72.]
Project Pre-GONDOLA
Author: Maurice K. Kurtz (Jr.)Publisher:
ISBN:
Category : Nuclear excavation
Languages : en
Pages : 84
Book Description
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.
Nuclear Science Abstracts
Author: Monthly Catalog of United States Government Publications
Author: Monthly Catalog of United States Government Publications, Cumulative Index
Author: United States. Superintendent of DocumentsPublisher:
ISBN:
Category : United States
Languages : en
Pages : 1348
Book Description
Project Trinidad, Explosive Excavation of Railroad Cuts 2 and 3 by Mounding and Directed Blasting
Author: Jerome E. LatteryPublisher:
ISBN:
Category : Cratering
Languages : en
Pages : 44
Book Description
Monthly Catalog of United States Government Publications
Author: United States. Superintendent of DocumentsPublisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1320
Book Description
Project Drum Inlet, Explosive Excavation in Saturated Sand
Author: Charles M. SnellPublisher:
ISBN:
Category : Channels (Hydraulic engineering).
Languages : en
Pages : 94
Book Description
Author: