SONAR PROBING AS A MINING AND TUNNELING TOOL
The basic aim of this program is to use acoustic probing as a tool to investigate discontinuities in salt. A narrow beam of sound is needed to accomplish this. Although the original approach to obtaining a narrower beam in salt was the standard one of using a large transducer, it was found more effective to use nonlinear acoustics to generate the narrow beam of 24 kHz within the salt itself and use the Sonar II system as a receiver. Now that the nonlinear acoustics method is being used, the research objective changes are outlined. Some results of investigations into nonlinear acoustics are recounted. A mathematical analysis of acoustic scattering from various cylinders is presented. The latest research results in the Grand Saline salt mine are reported.
Texas A&M University, College StationCollege of Geosciences
College Station, TX USA 77843
National Science FoundationApplied Science and Research Applications, 1800 G Street, NW
Washington, DC USA 20550
- Unterberger, R R
- Publication Date: 1978-12-20
- Pagination: 99 p.
- TRT Terms: Acoustic detectors; Acoustic measuring instruments; Acoustic scattering; Acoustics; Couplers; Cylindrical bodies; Excavation and tunneling; Halite; Mathematical analysis; Mining; Nonlinear systems; Probes (Measuring devices); Scattering; Signals; Sodium chloride; Sodium chloride; Sonar; Sonar transducers; Sound; Sound transmission; Theory
- Uncontrolled Terms: Discontinuity
- Old TRIS Terms: Acoustic detection; Acoustic measurement; Probes; Sound signals; Underground mining; Underground surveys
- Subject Areas: Geotechnology; Highways;
- Accession Number: 00192127
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: NSF/RA-780520 Prog Rpt.
- Contract Numbers: NSF-APR76-21764
- Files: TRIS
- Created Date: Jul 11 1979 12:00AM