SEISMIC DECOUPLING FOR EXPLOSIONS IN SPHERICAL CAVITIES
Technical Report
·
OSTI ID:4119443
A series of paired explosions in a salt mine near Winnfield, La., was conducted to test a theory concerning seismic decoupling by underground cavities. The theory predicted a decoupling of about 100. Free-field and surface measurements from an explosion in either a 6 or 15-ftradius spherical cavity were compared with similar measurements from a completely tamped explosion. Shot sizes were from 20 lb up to a few tons. Surface measurements were made out to 100 kin and covered the frequency range from 0.05 to 100 cycles. The experiment confirmed that decoupling does occur. The actual decoupling factor as a function of frequency is presented and compared with the theory. (auth)
- Research Organization:
- California. Univ., Livermore. Lawrence Radiation Lab.
- DOE Contract Number:
- W-7405-ENG-48
- NSA Number:
- NSA-15-002377
- OSTI ID:
- 4119443
- Report Number(s):
- UCRL-5843
- Country of Publication:
- United States
- Language:
- English
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