Hoek–Brown failure criterion - WikipediaClayton, J. Milititsky and R. Wood s. Bel l Evert Hoe k undations an Roc k D. Sc Eng C. Wylli e Consulting Enginee r Vancouver, B. Rossmanit h.
Underground Excavations and Tunnelling
Scientific Research An Academic Publisher. Affiliation s. Analytical, observational, and empirical are the main design approach for excavations in rock. Rock mass classifications as practiced in civil and mining engineering form an integral part of the empirical design methods, which is the most predominant design approach . The main objectives of the rock mass classifications are to identify the most significant parameters influencing the behavior of a rock mass, divide area into rock mass classes of varying quality and provide quantitative data for engineering design purpose.
This book deals with the geotechnical aspects of the design of underground openings for mining and civil engineering purposes. It contains a number of worked examples to assist the reader in applying the techniques described to his or her own problems. The data are presented under the following chapter headings: 1 planning considerations; 2 classification of rock masses; 3 geological data collection; 4 graphical presentation of geological data; 5 stresses around underground excavations; 6 strength of rock and rock masses; 7 underground excavation failure mechanisms; 8 underground excavation support design; 9 rockbolts, shotcrete and mesh; 10 blasting in underground excavations; 11 instrumentation. Several appendices deal with: isometric drawing charts, stresses around single openings, two-dimensional boundary element stress analysis, determination of material constants, underground wedge analysis, and conversion factors. A very extensive bibliography is included. Toggle navigation Menu. Availability: Find a library where document is available.
The Hoek—Brown failure criterion is an empirical stress surface that is used in rock mechanics to predict the failure of rock. Brown in for the design of underground excavations. The basic idea of the Hoek—Brown criterion was to start with the properties intact rock and to add factors to reduce those properties because of the existence of joints in the rock. The Hoek—Brown criterion has the form . This feature of the Hoek—Brown criterion appears unphysical  and care must be exercised when using this criterion in numerical simulations. From Wikipedia, the free encyclopedia.
Intact Rock Sampling and Testing
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