ISSN:0363-9061    

DOI:10.1002/nag.1610100502

出版商:John Wiley&Sons, Ltd    

年代:1986

数据来源: WILEY

ISSN:0363-9061    

DOI:10.1002/nag.1610100503

出版商:John Wiley&Sons, Ltd    

年代:1986

数据来源: WILEY

摘要:

AbstractSolutions are presented for the behaviour of layered soil or rock deposits which contain a heat source. Such a problem arises when high level nuclear waste is placed in deep underground depositaries, as the waste continues to generate heat for many years after placement. This heating of the surrounding soil or rock may lead to expansion and cracking with subsequent contamination of ground water. Results are presented for heat soureces with different decay rates and for heat sources in layers of material with different coefficients of expansion. An example using realistic data for rock is also given.The solution method involves applying Fourier or Hankel transforms to the field quantities and this reduces the two‐dimensional or axisymmetric problem to one involving a single spatial dimension. In cases where the soil or rock is horizontally layered, the method has great advantages over other numerical methods such as finite element or finite difference techniques, since little computer storage and data preparation time is required.Solution of the time‐dependent problem is carried out by applying Laplace transforms to the field variables, obtaining solutions and then using numerical means to invert the transformed solutions. This enables easy solution of problems involving time‐dependent (i.e. decaying) heat so

ISSN:0363-9061    

DOI:10.1002/nag.1610100504

出版商:John Wiley&Sons, Ltd    

年代:1986

数据来源: WILEY

摘要:

AbstractAn incremental plasticity theory has been developed to describe the mechanical behaviour of anisotropically consolidated clays. The theory removes some of the shortcomings of the existing critical state models by incorporating the effects of the initial anisotropy due to a known depositional stress history and its subsequent alteration during further plastic deformation under a general stress system.From the extensive comparisons with the reported results in the literature, it is established that the model is satisfactory in predicting the various aspects of drained as well as undrained behaviour ofK0‐consolidated clay

ISSN:0363-9061    

DOI:10.1002/nag.1610100505

出版商:John Wiley&Sons, Ltd    

年代:1986

数据来源: WILEY

摘要:

AbstractMathematical interpretation of the pore size disribution (PSD) data as measured by mercury intrusion porosimetry was revealed in detail. The PSD data were commonly presented as cumulative intruded volume per gram of specimen versus pore size. In this paper, however, they were expressed in a dimensionless term for convenient mathematical operations. The pore size density function was deduced from the PSD data using the finite difference approximation and curve‐fitting technique. For the prediction of permeability, first the published correlations between permeability and pore geometry were critically reviewed. A probabilistic permeability model based on the pore size density function was then developed, which can be thought of as a generalization of Childs and Collis‐George's model. Predictions of permeability of the compacted soils studied using the developed model were very good for a wide range of permeabilit

ISSN:0363-9061    

DOI:10.1002/nag.1610100506

出版商:John Wiley&Sons, Ltd    

年代:1986

数据来源: WILEY

摘要:

AbstractA review of literature reveals that regardless of the configuration of electro‐osmotic cells, all previous laboratory investigations and interpretations have been based on the assumption of a constant potential gradient in the specimen. Appropriate solutions for electrical potentials for cylindrical cells are presented in this pape

ISSN:0363-9061    

DOI:10.1002/nag.1610100507

出版商:John Wiley&Sons, Ltd    

年代:1986

数据来源: WILEY

ISSN:0363-9061    

DOI:10.1002/nag.1610100508

出版商:John Wiley&Sons, Ltd    

年代:1986

数据来源: WILEY

ISSN:0363-9061    

DOI:10.1002/nag.1610100509

出版商:John Wiley&Sons, Ltd    

年代:1986

数据来源: WILEY

ISSN:0363-9061    

DOI:10.1002/nag.1610100501

出版商:John Wiley&Sons, Ltd    

年代:1986

数据来源: WILEY