Accession Number:

AD0754143

Title:

A Theoretical and Experimental Study of Tunnel Boring by Machine with an Emphasis on Boreability Prediction and Machine Design

Descriptive Note:

Final rept. 19 Feb 1971-18 Aug 1972

Corporate Author:

COLORADO SCHOOL OF MINES GOLDEN DEPT OF MINING ENGINEERING

Personal Author(s):

• Wang, Fun-Den
• Miller, Russell J.

Report Date:

1972-08-01

Pagination or Media Count:

92.0

Abstract:

The report discusses the results of the first year of a proposed three year program. The three year program was to perform small and full size linear cutting tests to determine scaling factors relating thrust, torque, specific energy, and cutting coefficient for two linear rock cutting machine sizes used. Also to be studied would be the relative efficiency of various cutter types, particularly roller versus pick type cutters. The main objective of the first year of the contract was the construction of the full size linear cutting machine. Construction and initial testing was successfully completed.

Descriptors:

• *DRILLING
• *DRILLING MACHINES
• *UNDERGROUND STRUCTURES
• CUTTING
• FRACTURE(MECHANICS)
• MACHINES
• MANUFACTURING
• MATHEMATICAL MODELS
• PENETRATION
• PREDICTIONS
• REACTION KINETICS
• ROCK

Subject Categories:

• Construction Equipment, Materials and Supplies
• Structural Engineering and Building Technology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE