Research output: Contribution to report/book/conference proceedings › In-proceedings paper › peer-review
EDZ around an industrial excavation in Boom Clay. / Bastiaens, Wim; Li, Xiang Ling (Peer reviewer).
EDZ around an industrial excavation in Boom Clay. Luxembuourg, Luxembourg, 2005. p. 305-309.Research output: Contribution to report/book/conference proceedings › In-proceedings paper › peer-review
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TY - GEN
T1 - EDZ around an industrial excavation in Boom Clay
AU - Bastiaens, Wim
A2 - Li, Xiang Ling
N1 - Score = 3
PY - 2005/11
Y1 - 2005/11
N2 - A new gallery (excavated diameter 4.89m) was recently constructed at the underground research facility HADES (Mol, Belgium) located at a depth of 223m in a plastic clay layer. An industrial excavation technique was used. The EDZ around the gallery is studied by observing macro-fractures and pore pressure distribution. The fractured zone extends at least 1m into the host rock; this value will be verified during the EC SELFRAC project. The radius of the Hydraulic Disturbed Zone (HDZ) is at least 20m and the HDZ is anisotropic. Gallery construction will always induce an EDZ but it is shown that industrial excavation techniques can limit its extent. From a depth of 1.3m into the host rock, installed piezometers are sealed off from the gallery by the converging clay. From a distance of 5.1m into the host rock, the influence of the excavation on permeability is limited.
AB - A new gallery (excavated diameter 4.89m) was recently constructed at the underground research facility HADES (Mol, Belgium) located at a depth of 223m in a plastic clay layer. An industrial excavation technique was used. The EDZ around the gallery is studied by observing macro-fractures and pore pressure distribution. The fractured zone extends at least 1m into the host rock; this value will be verified during the EC SELFRAC project. The radius of the Hydraulic Disturbed Zone (HDZ) is at least 20m and the HDZ is anisotropic. Gallery construction will always induce an EDZ but it is shown that industrial excavation techniques can limit its extent. From a depth of 1.3m into the host rock, installed piezometers are sealed off from the gallery by the converging clay. From a distance of 5.1m into the host rock, the influence of the excavation on permeability is limited.
KW - gallery
KW - fracture
KW - EDZ
KW - Boom Clay
KW - hydraulic conductivity
UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_26917
UR - http://knowledgecentre.sckcen.be/so2/bibref/3086
M3 - In-proceedings paper
SN - 978-92-894-8794-8
SP - 305
EP - 309
BT - EDZ around an industrial excavation in Boom Clay
CY - Luxembuourg, Luxembourg
T2 - Impact of the excavation disturbed or damged zone (EDZ) on the performance of radioactive waste geological repositories
Y2 - 30 November 2005 through 30 November 2005
ER -
ID: 138095