full-face tunneling

full-face tunneling

[′fu̇l ‚fās ′tən·əl·iŋ]
(civil engineering)
A system of tunneling in which the tunnel opening is enlarged to desired diameter before extension of the tunnel face.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
If the headrace tunnel was excavated directly by the TBM in full-face tunneling method, the energy release rate reaches 0.096 MJ/m3.