Thermal Monitoring of Geological Changes during Excavation

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)

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1972
Accession Number
AD0755117

Entities

People

  • H. K. Lintz

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Human Systems

DTIC Thesaurus Topics

  • Air Temperature
  • Climate Change
  • Detection
  • Equations
  • Heat Transfer
  • Heat Transmission
  • Isotherms
  • Materials
  • Mathematical Analysis
  • Measurement
  • Measuring Instruments
  • Radiation
  • Rapid Excavation
  • Shape
  • Temperature Gradients
  • Temperature Measuring Instruments
  • Thermal Conductivity

Readers

  • Marine Hydrodynamics
  • Seismology
  • Thermal Physics or Thermal Science.