Stress Transfer Mechanism of the Jointed Rock Media with Strong Anisotropy

Hamajima, Ryokichi; Kawai, Tadahiko

doi:10.5110/jjseg.22.261

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…Note that equation (13) describes the linear elastic portion of the constitutive law given by equations (7) and (9).…”

Section: (14)mentioning

confidence: 99%

Mixed time integration for the transient analysis of jointed media

Plesha

1986

Num Anal Meth Geomechanics

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SUMMARYA constitutive operator split method with implicit-explicit time integration is presented for the transient analysis of rigid block models of jointed media. The linear portion of the joint constitutive law is integrated by an implicit method and the non-linear, time dependent portion is integrated by an explicit method. The method features the stability of implicit procedures as well as the flexibility of explicit procedures for non-linear problems. The solutions obtained with this method are compared to the solutions obtained by the explicit central difference method; in all cases there is good to excellent agreement. For some problems, particularly for those with low frequency excitation, it is shown that the implicit-xplicit method can result in a substantial savings over more conventional explicit methods.

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“…Note that equation (13) describes the linear elastic portion of the constitutive law given by equations (7) and (9).…”

Section: (14)mentioning

confidence: 99%

Mixed time integration for the transient analysis of jointed media

Plesha

1986

Num Anal Meth Geomechanics

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A computer method for stability analysis of caverns in jointed rock

Belytschko

Plesha

Dowding

1984

Num Anal Meth Geomechanics

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A simple rigid block model has been developed for analysing the stability of caverns and tunnels in jointed rock. Rigid block interactions are idealized as linear edge-to-edge contacts with a zero joint tension constraint and a Mohr-Coulomb friction law. In the method, the minimum friction angle for stability is determined by sequentially eliminating tension and then minimizing the shear. It is demonstrated through examples that the minimum joint friction angle which results in a stable configuration is independent of the stiffness of the joint, and depends only upon the loading and geometry of the jointing and cavern. This insensitivity of stability to the normal and tangential joint stiffnesses, which can be difficult to obtain, is very useful for design purposes.

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