Accession Number:

AD0755117

Title:

Thermal Monitoring of Geological Changes during Excavation

Descriptive Note:

Final rept. 30 Apr 1971-31 Jul 1972

Corporate Author:

BENDIX RESEARCH LABS SOUTHFIELD MI

Personal Author(s):

Report Date:

1972-10-01

Pagination or Media Count:

66.0

Abstract:

Monitoring or rock temperatures with a radiometer was investigated for its feasibility as a hazard prediction method during rapid excavation in hard rock. It was found both theoretically and experimentally that errors introduced into the rock temperature measurements by heat exchange with the tunnel air, heat dissipation of machinery, heat generated by the excavation process itself, and moisture on the rock mask a wide range of temperature signals from actual hazardous changes in lithology. The temperature monitoring method is not reliable enough for hazard prediction. However, indications are that it could be used to map out large volumes of different lithology, such as ore bodies, in mines. Author

Subject Categories:

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

Distribution Statement:

APPROVED FOR PUBLIC RELEASE