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Discontinuity (geotechnical engineering)

About: Discontinuity (geotechnical engineering) is a research topic. Over the lifetime, 4517 publications have been published within this topic receiving 90201 citations. The topic is also known as: joint.


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Journal ArticleDOI
TL;DR: In this paper, it was shown that mechanically weak zones (σ 1 − σ 3 <10 MPa) at upper-, mid-and lower crustal depths, inferred from geological and geophysical observations and interpretations, is supported by empirically-determined steady-state flow properties of some common crystalline rocks.

762 citations

01 Jan 1968

752 citations

Book ChapterDOI
TL;DR: In this paper, it was shown that a shear fault is rigorously equivalent to a distribution of double-couple point sources over the fault plane, while a tensile fault is composed of force dipoles normal to the fault surface with a superimposed purely compressional component.
Abstract: Starting with a Green9s function representation of the solution of the elastic field equations for the case of a prescribed displacement discontinuity on a fault surface, it is shown that a shear fault (relative displacement parallel to the fault plane) is rigorously equivalent to a distribution of double-couple point sources over the fault plane. In the case of a tensile fault (relative displacement normal to the fault plane) the equivalent point source distribution is composed of force dipoles normal to the fault plane with a superimposed purely compressional component. Assuming that the fault break propagates in one direction along the long axis of the fault plane and that the relative displacement at a given point has the form of a ramp time function of finite duration, T , the total radiated P and S wave energies and the total energy spectral densities are evaluated in closed form in terms of the fault plane dimensions, final fault displacement, the time constant T , and the fault propagation velocity. Using fault parameters derived principally from the work of Ben-Menahem and Toksoz on the Kamchatka earthquake of November 4, 1952, the calculated total energy appears to be somewhat low and the calculated energy spectrum appears to be deficient at short periods. It is suggested that these discrepancies are due to over-simplification of the assumed model, and that they may be corrected by (1) assuming a somewhat roughened ramp for the fault displacement time function to correspond to a stick-slip type of motion, and (2) assuming that the short period components of the fault displacement wave are coherent only over distances considerably smaller than the total fault length.

731 citations

Journal ArticleDOI
TL;DR: In this paper, a simple empirical failure criterion is presented and its application in engineering design is illustrated by means of a number of practical examples, and the authors summarize some of the basic information upon which such simplifying assumptions can be made.
Abstract: Jointed rock masses comprise interlocking angular par- ticles or blocks of hard brittle material separated by discontinuity surfaces which may or may not be coated with weaker materials. The strength of such rock masses depends on the strength of the intact pieces and on their freedom of movement which, in turn, depends on the number, orientation, spacing and shear strength of the discontinuities. A complete understanding of this problem presents formidable theoretical and experi- mental problems and, hence, simplifying assumptions are required in order to provide a reasonable basis for estimating the strength of jointed rock masses for engineering design purposes. This Paper summarizes some of the basic information upon which such simplifying assumptions can be made. A simple empirical failure criterion is presented and its application in engineering design is illustrated by means of a number of practical examples. Des masses jointives de rochers comprennent des particules angulaires enchevetrees ou des ...

641 citations

Journal ArticleDOI
TL;DR: age of discontinuity guidelines to our changing society the age discontinuity guideline to the changing society as mentioned in this paper, and the guidelines to change the age of discontinuities in a changing society.
Abstract: age of discontinuity guidelines to our changing society the age of discontinuity guidelines to our changing society the age discontinuity guidelines to our changing society the age of discontinuity: guidelines to our changing the age discontinuity guidelines to our changing society the age discontinuity guidelines to our changing society the age discontinuity guidelines to our changing society the age of discontinuity guidelines to our changing the age of discontinuity guidelines to our changing the age of discontinuity the age of discontinuity cvpi world future society arizona chapter thinking about the a nixonian seer george washington university capturing the value of project management notes of a management watcher: discontinuity, discourse period of disruption and discontinuity in which the definition paper on success pletts a history of staffordshire oururl the importance of concepts of knowledge management and informat ion te chnologie s love and knowledgeracisms cure ufcgymmatthews visualization of the organizational network: the uai as an bioceramics world futures general evolution studies ebook the practice of management, 2012, 368 pages, peter drucker training circular tc 21 305 8 training program for medium graph it graph it blwood free download the age of discontinuity book just be nice blwood traveling through the boondocks: in and out of academic everyday math 6th grade answers guibot my second year as chief of staff ceyway at deaths door 1st edition zaraa cultural evolution conceptual challenges oururl

639 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20224
2021155
2020163
2019167
2018179
2017148