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2002

Chan, D. H., Morgenstern, N. R., Robertson, P. K., Imam, S. M. R.

Abstract: The relationship between the shapes of the yield surface and the undrained effective stress path (UESP) of loose sand is investigated for triaxial loading conditions. It is shown that the UESP can be used in the construction of capped yield surfaces for sands. The stress ratio M-p...

2000

Morgenstern, N. R., Grozic, J. L. H., Lefebvre, M. E., Robertson, P. K.

Abstract: Time domain reflectometry (TDR) can be used to determine the volumetric water content of soils. This note describes the utilization of a TDR miniprobe in triaxial testing. The TDR performance was examined with a series of tests that not only proved its reliability but also resulted in...

2002

Cruden, D. M., Peterson, A., Thomson, S., Zabeti, P.

Abstract: The Lesueur landslide occurred on 3 September 1963 on the outside of a meander of the North Saskatchewan River in northeast Edmonton. The displaced volume was 0.76 Mm(3) of Pleistocene deposits and underlying Upper Cretaceous mudstones. The trigger of the landslide is believed to be...

2000

Maybeeb, W. G., Martin, C. D.

Abstract: Observations of pillar failures in Canadian hard-rock mines indicate that the dominant mode of failure is progressive slabbing and spalling. Empirical formulas developed for the stability of hard-rock pillars suggest that the pillar strength is directly related to the pillar...

1965

Morgenstern, N. R., Amir-Tahmasseb, I.

Hydrostatic pressure, arching of the soil and electro-osmotic forces have each been suggested as the dominant factor to account for stability of trench excavations in cohesionless soils supported by clay slurries. The Authors suggest that the most important mechanism is the hydrostatic pressure...

2000

Konrad, J. M., Law, T., Piche, R., Finn, W. D. L., Cathro, D. C., Atukorala, U., Byrne, P. M., Youd, T. L., Wride, C. E., Biggar, K. W., Sego, D. C., Hofmann, B. A., Vaid, Y. P., Hughes, J., List, B. R., Monahan, P. A., Sokowicz, J., Czajewski, K., Stewart, R. A., Lord, E. R. F., Zavodni, Z., Kupper, A., Imrie, A. S., Woeller, D. J., Robertson, P. K., Campanella, R. G., Chan, D. H., Scott, D., Phillips, R., Hammamji, Y., Howie, J. A., Watts, B. D., Morgenstern, N. R., Plewes, H. D., Gu, W. H., Tan, S.

Abstract: The Canadian geotechnical engineering community has completed a major collaborative 5 year research project entitled the Canadian Liquefaction Experiment (CANLEX). The main objective of the project was to study the phenomenon of soil liquefaction, which can occur in saturated sandy...

2000

Czajewski, K., Konrad, J. M., Monahan, P. A., Robertson, P. K., Zavodni, Z., Plewes, H. D., Sokowicz, J., Hofmann, B. A., Cathro, D. C., Law, T., Hughes, J., Howie, J. A., Chan, D. H., Phillips, R., Youd, T. L., Watts, B. D., Morgenstern, N. R., Biggar, K. W., Imrie, A. S., Stewart, R. A., Atukorala, U., Woeller, D. J., Wride, C. E., Scott, D., Piche, R., Kupper, A., Sego, D. C., Gu, W. H., Byrne, P. M., List, B. R., Hammamji, Y., Lord, E. R. F., Campanella, R. G., Finn, W. D. L., Tan, S., Vaid, Y. P.

Abstract: The Canadian geotechnical engineering community has completed a major collaborative 5 year research project entitled the Canadian Liquefaction Experiment (CANLEX). The main objective of the project was to study the phenomenon of soil liquefaction, which can occur in saturated sandy...

1965

Price, V. E., Morgenstern, N. R.

Within the framework of limit equilibrium methods of stability analysis, no restriction need be placed at the outset upon the shape of the possible slip surface. In many cases, the critical surface may deviate significantly from a circle or a plane and therefore a method that facilitates the...

2003

Christiansson, R., Martin, C. D., Kaiser, P. K.

Abstract: When the stress-induced risks to a projects warrant it, in situ stress must be measured. However, as the stress-induced risks increase, i.e.. the stress magnitudes approach the rock mass strength, the confidence in commonly used stress measurement techniques decrease. The design of...

1960

Morgenstern, N. R., Bishop, A. W.

The application of the effective stress analysis to earth slopes has suffered through lack of a general solution such as that presented by Taylor (1937) for the total stress analysis. Recent developments in computing technique have been applied to the slip circle method and have made it possible...