PROJECT HOBO, GROUTING SUPPORT. Miscellaneous Paper No. 6-409

Technical Report · Mon Aug 01 04:00:00 EDT 1960

OSTI ID:4152709

Polatty, J M

The grouting operation conducted in connection with Project HOBO consisted of four high-explosive shots made underground in tuff at the Nevada Test Site to permit a comparison between the seismic signal generated by a contained explosion in tuff and that produced by a tamped detonation in salt. To obtain shot data, three sets of instruments were placed in holes at the test site. Grouting mixtures were specially designed to match the density and sonic velocity of the in-situ material in which the instrument holes were drilled, and the instrument holes were pumped with these mixtures after the instruments were embedded. Three shot holes were drilled and pumped with a quick-setting grout mixture for containing the detonation of the high explosive, Pelletol, and a fourth hole was drilled and filled with a special set of mixtures to provide a dry hole for the detonation of the Pelletol. Field-cast grout specimens were tested in the laboratory. The field grouting was considered successful, and laboratory test results of the field-cast specimens checked with the results of density tests made in the field. (auth)

• Research Organization: Waterways Experiment Station, Vicksburg, Miss.
• NSA Number: NSA-15-002376
• OSTI ID: 4152709
• Report Number(s): TID-6669
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CLOSURES
COUPLING
GENERAL AND MISCELLANEOUS
HOLES
INTERACTIONS
MEASURED VALUES
ROCKS
SEISMOLOGY
SODIUM CHLORIDES
TUFF
UNDERGROUND EXPLOSIONS