Accession Number : ADA025160


Title :   The Determination of 'In Situ' Anisotropic Elastic Moduli from Laboratory Ultrasonic and Field Seismic Measurements.


Descriptive Note : Topical rept. Apr 74-Aug 75,


Corporate Author : TERRA TEK INC SALT LAKE CITY UTAH


Personal Author(s) : Johnson,J N ; Lingle,R ; Swolfs,H S


Report Date : Jun 1975


Pagination or Media Count : 32


Abstract : An operational method is described for the determination of the low-pressure elastic constants for a transversely isotropic rock mass under in situ conditions. The results are based on laboratory ultrasonic tests and field seismic measurements. Application of this method is made to the top thirty feet of the uppermost Kayenta sandstone unit at the Mixed Company site, for which the in situ elastic moduli are determined to be as follows: C11 = 125 kbar, C12 = 60 kbar, c13 = 34 kbar, C33 = 51 kbar and C44 = 26 kbar. It is shown that previously recommended parameters describing both the elastic and plastic anisotropic properties of Kayenta sandstone from the Mixed Company site are in poor agreement with newly generated data. (Author)


Descriptors :   *ROCK , STRESS STRAIN RELATIONS , EXPERIMENTAL DATA , LABORATORY TESTS , FIELD TESTS , ELASTIC PROPERTIES , MODULUS OF ELASTICITY , SURFACE BURST , NUCLEAR EXPLOSION SIMULATION , GROUND MOTION , SEISMIC DATA , MATHEMATICAL PREDICTION , ANISOTROPY , CONSTANTS , SANDSTONE , SEISMIC WAVES , PLASTIC PROPERTIES , ULTRASONIC TESTS , NEVADA


Subject Categories : Geology, Geochemistry and Mineralogy
      Seismology


Distribution Statement : APPROVED FOR PUBLIC RELEASE