Determination of near field excavation disturbance in crystalline rock

Conference · Tue Dec 31 23:00:00 EST 1985 · Mater. Res. Soc. Symp. Proc.; (United States)

OSTI ID:5474251

Koopmans, R; Hughes, R W

The computerized dilatometer system has rapidly and economically provided deformation moduli of low and high modulus rock, determined the extent of excavation disturbance surrounding an underground opening and located open fracture within a rock mass. Results from both test sites indicate that the moduli obtained were influenced by the in situ tangential stress field. It has been shown that the near field excavation disturbance is kept to a minimum through the use of careful excavation techniques such as the tunnel boring machine. In turn, the in situ tangential stress levels and deformation moduli are maximized while the corresponding permeability is minimized.

• Research Organization: Ontario Hydro, Toronto
• OSTI ID: 5474251
• Report Number(s): CONF-850995-
• Journal Information: Mater. Res. Soc. Symp. Proc.; (United States), Journal Name: Mater. Res. Soc. Symp. Proc.; (United States) Vol. 50; ISSN MRSPD
• Country of Publication: United States
• Language: English

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