TY - GEN

T1 - Dependence of fracture geometry and spatial variation in pressure on hydraulic conductivity in rock fractures

AU - Kishida, K.

AU - Hosoda, T.

AU - Sawada, A.

AU - Sato, H.

AU - Nakashima, S.

AU - Yasuhara, H.

PY - 2012/2/13

Y1 - 2012/2/13

N2 - Although it is generally known that a natural rock fracture indicates a complex aperture distribution, the fracture is an ideal representation of the parallel plate model. The cubic law is applied to evaluate the hydraulic properties of fractured rock. From several previous research works, it is known that the cubic law can be applied when the Reynolds number is less than 1.0 and that the advection term can basically be ignored in such fracture flows. In this research work, two-dimensional seepage flow analyses, using the authors' proposed 2D model which is considered with the advection term, are carried out for single fracture hydro-conductivity experiments under conditions which allow for the application of the cubic law. From the numerical results, the validity of the 2D model is discussed along with the local Reynolds number and the application of the cubic law.

AB - Although it is generally known that a natural rock fracture indicates a complex aperture distribution, the fracture is an ideal representation of the parallel plate model. The cubic law is applied to evaluate the hydraulic properties of fractured rock. From several previous research works, it is known that the cubic law can be applied when the Reynolds number is less than 1.0 and that the advection term can basically be ignored in such fracture flows. In this research work, two-dimensional seepage flow analyses, using the authors' proposed 2D model which is considered with the advection term, are carried out for single fracture hydro-conductivity experiments under conditions which allow for the application of the cubic law. From the numerical results, the validity of the 2D model is discussed along with the local Reynolds number and the application of the cubic law.

KW - Fluid flow

KW - Lab testing

KW - Numerical modelling

KW - Rock joints

UR - http://www.scopus.com/inward/record.url?scp=84856741581&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84856741581&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84856741581

SN - 9780415804448

T3 - Harmonising Rock Engineering and the Environment - Proceedings of the 12th ISRM International Congress on Rock Mechanics

SP - 1327

EP - 1330

BT - Harmonising Rock Engineering and the Environment - Proceedings of the 12th ISRM International Congress on Rock Mechanics

T2 - 12th International Congress on Rock Mechanics of the International Society for Rock Mechanics, ISRM 2011

Y2 - 18 October 2011 through 21 October 2011

ER -