Accession Number : ADP204485

Title :   The LANL Source Geometry Experiment,

Corporate Author : LOS ALAMOS NATIONAL LAB NM

Personal Author(s) : Stump, B. W. ; Pearson, D. C. ; Edwards, C. L. ; Baker, D. F.

PDF Url : ADP204485

Report Date : 14 AUG 1995

Pagination or Media Count : 10

Abstract : The Source Geometry Experiment was successfully conducted over the time period 17 April to 7 May 95. Recording in the mine was conducted 24 April to 4 May 95. Five single sources were instrumented that included four cylindrical charges at different burdens (distance from the free face) and a pseudo-spherical charge. Nine production shots conducted during the two week visit to the mine were also recorded. Included in these production shots were a number of explosions designed to primarily bulk (no cast) the overburden and a number which cast material into the mine pit. Instrumentation was divided into six primary types: (1) Near-source accelerometers were deployed at distances of approximately 20 to 300 m (14, three-component 25 g/volt accelerometers and 16, three-component 1 g/volt accelerometers); (2) Linear array of velocity gauges to quantify wave propagation effects (4-11 three component strong motion velocity gauges); (3) Far-field velocity gages deployed in an azimuthal array around the mine at ranges from 500 to 2500 m (8, three component velocity gauges); (4) High speed film and multiple camera video designed to quantify the two and three dimensional affects around the explosions (2 high speed cameras and 3 HI-8 video cameras); (5) Velocity of detonation and detonation time measurements of selected explosions (2 VODR systems); and (6) Pre and post shot laser survey. Any one shot had as many as 154 channels of data. Although the complete data set is still being assembled, quality checked and analyzed, it appears that nearly 2,000 channels of data were successfully recovered during the experiment.

Descriptors :   *SEISMIC DETECTION, *NUCLEAR EXPLOSION SIMULATION, *MINING ENGINEERING, *ARMS CONTROL, *NUCLEAR EXPLOSION DETECTION, *SEISMIC VELOCITY, DATA BASES, SYMPOSIA, SURFACE WAVES, VERIFICATION, MONITORING, ACCELEROMETERS, EXPLOSIVE CHARGES, UNDERGROUND EXPLOSIONS, NUCLEAR EXPLOSION TESTING, BOREHOLES, WAVE PROPAGATION, SEISMIC WAVES, RECORDING SYSTEMS, SHAPED CHARGES, SEISMIC DISCRIMINATION, TREATIES, SPECTRUM ANALYSIS, DETONATIONS, HIGH SPEED PHOTOGRAPHY, INDIANA.

Subject Categories : Government and Political Science
      Mining Engineering
      Seismology
      Seismic Detection and Detectors
      Nuclear Weapons

Distribution Statement : APPROVED FOR PUBLIC RELEASE