Prediction of Geologic and Hydrologic Conditions Ahead of a Rapid Excavation Operation

Abstract

A well logging system for making measurements of physical properties of rock penetrated by vertical drill holes was designed and partially developed by adapting on-hand Bureau of Mines equipment to special needs of geological- hydrological prediction problems associated with tunneling at depths of several thousand feet in hard rock. Calibration holes and models were developed for providing a means of improved quality control required for the quantitative measurements of interest. A new interpretive technique for determining P- and S-wave velocities from acoustic logs was developed and preliminary tests were performed to evaluate its effectiveness.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1972
Accession Number
AD0748637

Entities

People

  • James H. Scott

Tags

DTIC Thesaurus Topics

  • Acoustic Velocity
  • Calibration
  • Concrete
  • Construction
  • Data Acquisition
  • Diameters
  • Drills
  • Excavation
  • Instrumentation
  • Laboratory Tests
  • Measurement
  • Physical Properties
  • Quality Control
  • Rapid Excavation
  • Tunneling
  • United States
  • Well Logging

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Coastal and Marine Engineering/Sediment Transport/Hydraulic Engineering
  • Seismology