Accession Number:

AD0753274

Title:

Development of Instrumentation to Monitor Radial Deformation of the Medium Around an Underground Opening

Descriptive Note:

Semiannual technical rept. 3 Mar-31 Aug 1972

Corporate Author:

BATTELLE MEMORIAL INST RICHLAND WA PACIFIC NORTHWEST LABS

Personal Author(s):

• Rasmussen, D. E.

Report Date:

1972-09-29

Pagination or Media Count:

44.0

Abstract:

The objectives of the research and development program are to develop two unique types of instrumentation suitable for measuring deflection of the medium surrounding an underground opening. The two instrument systems being developed are referred to as the Self-Contained System and the Laser System. The report covers work performed on both systems during the first-half of the second contract year. During the first contract year, concept selection, component evaluation, and prototype design and fabrication for the Self-Contained System and concept selection and component evaluation for the Laser System was completed. During the first half of the current contract year, the authors have completed laboratory and field evaluation of the Self-Contained System and have design, fabrication, and component evaluation of the Laser System well underway.

Descriptors:

• *ROCK
• *UNDERGROUND STRUCTURES
• DEFORMATION
• ELECTRONIC EQUIPMENT
• INSTRUMENTATION
• RECORDING SYSTEMS
• MONITORS
• LOGIC CIRCUITS
• DEFLECTION
• LASERS

Subject Categories:

• Geology, Geochemistry and Mineralogy
• Mining Engineering
• Civil Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE