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Seismic Attenuation Tests at the Portsmouth, Ohio, Gaseous Diffusion Add-On Site
Seismic attenuation studies were conducted in two areas (A and B) where rock excavation is anticipated at the Portsmouth, Ohio, Gaseous Diffusion Add-On site. Ground and structure motions were measured from detonation of various charge weights to seismically calibrate the site and provide explosive use limits criteria for rock excavation operations. The data were analyzed and blasting criteria established as follows: (1) Charge limits which will minimize public annoyance and prevent residential or industrial structure damage at the site area included; (2) The probability of internal component damage in the moderately sensitive structures cannot be accurately determined because the available response data are insufficient. If the risk to moderately sensitive structures stated above is inacceptableunacceptable, then the Area B recommendations should applied to both Areas A and B or one of two other procedures should be followed. One is to gain additional data during the early phases of excavation blasting for further analysis and the second is to limit the charge/delay in 100 lb. The latter two procedures will reduce the risk significantly and in the last, the maximum charge/delay (100 lb) is no larger than that already used in a test at the site.
Seismic Attenuation Tests at the Portsmouth, Ohio, Gaseous Diffusion Add-On Site
Seismic attenuation studies were conducted in two areas (A and B) where rock excavation is anticipated at the Portsmouth, Ohio, Gaseous Diffusion Add-On site. Ground and structure motions were measured from detonation of various charge weights to seismically calibrate the site and provide explosive use limits criteria for rock excavation operations. The data were analyzed and blasting criteria established as follows: (1) Charge limits which will minimize public annoyance and prevent residential or industrial structure damage at the site area included; (2) The probability of internal component damage in the moderately sensitive structures cannot be accurately determined because the available response data are insufficient. If the risk to moderately sensitive structures stated above is inacceptableunacceptable, then the Area B recommendations should applied to both Areas A and B or one of two other procedures should be followed. One is to gain additional data during the early phases of excavation blasting for further analysis and the second is to limit the charge/delay in 100 lb. The latter two procedures will reduce the risk significantly and in the last, the maximum charge/delay (100 lb) is no larger than that already used in a test at the site.
Seismic Attenuation Tests at the Portsmouth, Ohio, Gaseous Diffusion Add-On Site
J. R. Curro (author) / P. F. Hadala (author) / G. B. Landers (author)
1978
46 pages
Report
No indication
English
Detonations, Explosion Effects, & Ballistics , Geology & Geophysics , Seismic waves , Explosion effects , Attenuation , Underground explosions , Wave propagation , Structural response , Excavation , Vibration , Rock mechanics , Construction , Geophones , Test equipment , Safety , Blast waves , Ground motion
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