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Probe Drilling for Rapid Tunneling.

Authors
Williamson-TN; Schmidt-RL
Source
Proc 1st N Am Rapid Excavation and Tunneling Conf AIME 1972 1:65-87
Link
NIOSHTIC No.
10001769
Abstract
This paper describes one of several research projects funded by the advanced research projects agency to extend the technology of rapid underground excavation. This study and field research effort are to investigate alternative means to determine rock and geological conditions in advance of a tunnel boring machine (tbm). Approximately 1 year of a planned 3-year program has resulted in the definition of three candidate drill systems. Hardware has been assembled to field test these candidates and testing has begun.
Publication Date
19720101
Document Type
OP;
Fiscal Year
1972
NTIS Accession No.
NTIS Price
Identifying No.
OP 14-73
NIOSH Division
TCRC;
Source Name
Proc. 1st N. Am. Rapid Excavation and Tunneling Conf., AIME, V. 1, Chap. 8, 1972, PP. 65-87
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