Accession Number : AD0856002

Title :   Dihest Development Tests Minidihest I and II, Planewave I and II.

Descriptive Note : Rept. for June 67-Jan 69,

Corporate Author : AIR FORCE WEAPONS LAB KIRTLAND AFB NM

Personal Author(s) : Blouin, Scott E.

Report Date : JUN 1969

Pagination or Media Count : 113

Abstract : MINIDIHEST I and II in soil and PLANEWAVE I and II in rock were the first efforts toward the development of a technique to simulate the direct-induced ground motions resulting from a nuclear detonation. Buried vertical arrays of high explosives were simultaneously detonated and used as energy inputs to the experiments. Resulting ground motions were monitored with combinations of velocity, acceleration, strain, and time-of-arrival gages positioned at various ranges and depths. The in-situ material properties of the sites governed the propagation characteristics of the stress waves. Moduli and corresponding stress wave velocities increased with increasing depth. Stress wave amplitudes decreased with increasing range. Part of this decrease was due to geometric energy dispersion and part of energy attenuation in the propagation medium. A semi-empirical technique was used to evaluate and make predictions for the tests in rock. (Author)

Descriptors :   (*ROCK, NUCLEAR EXPLOSIONS), (*NUCLEAR EXPLOSIONS, SHOCK WAVES), SIMULATION, MATHEMATICAL PREDICTION, SOIL MECHANICS, MOTION, ATTENUATION, ENERGY, PRESSURE, SURFACE BURST, INSTRUMENTATION, CRATERING.

Subject Categories : Geology, Geochemistry and Mineralogy
      Soil Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE