9BA
784231 GEOPHYSICAL AND ISOTOPE METHODS OF HYDROLOGICAL AND ENGIN~RING-GEOI/)GICAL INVESTIGATIONS (IN RUSSTAN) Chubarov, V N (editor) Tr Vses Nauch-issled Inst Gidrogeol Inzh Geol, Moscow, Vg0, 1975, 197P
reflection method have been developed. High frequency digital recording equipment was use together with lightweight shot-drilllrg equipment and a variety of down-hole seismic impuls sources. Rapid, complete coverage of a coal prospect area by a small team is described.
78~232 STUDYING THE STRUCTURE OF FROZEN LOOSE DEPOSITS IN SITU BY SEI~IC TECHNIQUES (IN RUSSIAN) Voronkov, 0 K4 Mikhailovskii, G V Izv Vsms Nauch-issled Inst Gidrotekh, Lerdr~rad, VI0~, 1974, PI17-136
Avail: NTIS, Springfield, Va, 22161, USA (PB 266 8BV/AS)
78~233 ITERATIVE APPROXIMATION TECHNIQUES FOR MICROSEIS4IC SOURCE LOCATION Dechmsmj G H; Sun, M C US~4 RI 8245, 1977, 13P Microseismic techniques for rock structure analysis were adapted to investigations of surface problems such as slope failure in an open pit mine. The source location method and two derivative location algorithms are described in detail, and the speed and accuracy of the two algarithms are compared. Avail: USBM, 4800 Forbes Ave, Pittsburgh, Pa, 15213, USA 784234 GEOPHYSICAL M E A ~ N T SYS2EM FOR DELINEATION OF CHANNEL SANDS Cook, J C USBM OFR 83-77, July 1976, 97P High resolution techniques for shallow seismic exploration of coalbeds using the seismic
Subjects Peripheral to Geomechanics 784235 EXPERIMENTAL STRESS ANALYSIS Dally I J W; Rileyj W F New York: McGraw-Hill 1978, 572P The subject is dealt with in 4 parts: elemer~ elasticity, brittle-coatlrg methods, strain measurement methods and related instrumentatlc and optical methods of stress analysis (includ ing moire methods ani photoelasticity). 784236 FORMULAS FOR SE%ESS AND STRAIN. 5TH EDITION Roark, R J; Young, W C Tokyo: McGraw Hill Kogakusha, 1975, 624P