Добрый день, Коллеги. Важное сообщение, просьба принять участие. Музей Ферсмана ищет помощь для реставрационных работ в помещении. Подробности по ссылке
The Proceedings of EUROCK 2010 is a collection of 6 keynotes and 193 technical papers accepted by the symposium. As an annual European regional event of the International Society for Rock Mechanics (ISRM), EUROCK has been a major exchange and discussion platform for the international rock mechanics community. Rock mechanics in Europe has been undergoing some major transformation during the last two decades. The reduction of mining activities in Europe affects heavily on rock mechanics teaching and research at universities and institutes. At the same time, new merging activities, notably, underground infrastructure construction, geothermal energy development, radioactive waste and CO2 repository, and natural hazard management, are creating new opportunities of research and engineering. Rock mechanics today is closely associated with, and indeed part of, construction, energy, and environmental engineering.
In the context of underground construction, forensic engineering is taken to be the application of engineering principles and methodologies to determine the cause of a performance deficiency, often a collapse, in an excavation, and the reporting of the findings, usually in the form of an expert opinion within the legal system. The procedures that may be used in forensic geotechnical investigations and the interface of the engineer with the legal system are discussed. The application of the principles and methodologies outlined are illustrated through a brief account of the investigation of the collapse of a small part of an excavation in the Lane Cove Tunnel Project, Sydney, Australia, on 2 November, 2005. <...>
Our experience as teachers indicates that a traditional format where the instructor provides students with theoretical knowledge through a series of lectures and abstract textbook problems is not sufficient to prepare students to tackle real geotechnical challenges. There is a disjunct between what students are taught in universities and what they are expected to do as engineers. Although students may easily derive complex equations in class, they often struggle when faced with practical engineering problems in the workplace. It is thus not surprising that a project-based approach to learning, which partially simulates what engineers do in real life, has proved to be a valid alternative to the traditional method (Gratchev and Jeng, 2018; Gratchev et al., 2018). Project-based learning not only provides students with opportunities to better understand the fundamentals of geotechnical engineering, but it also allows them to gain more practical experience and learn how to apply theory to practice. In addition, working on a practical project makes the learning process more relevant and engaging. <...>
Rock mechanics is a subject that is not commonly present in most undergraduate civil engineering curriculums worldwide. It is sometimes taught as
an elective subject in the final year of the bachelor’s degree program or as a postgraduate subject. Nevertheless, civil and mining engineers and academicians would agree on the usefulness and the value of some exposure to rock mechanics at the undergraduate level. Ideally speaking, engineering geology
Rock mechanics is the scientific basis for construction in rock. Its task is to formulate laws describing the mechanical behaviour and permeability of rock masses and to develop a technology of testing which enables the determination of rock mechanics parameters. Furtltermore, the development of procedures to investigate the stability of openings, foundations and slopes in rock masses is also to be numbered amongst the tasks of rock mechanics. Rock engineering, on the other hand, is concerned more with questions relating to design and construction.
The term Rock Minerals is sufficiently indefinite to permit of considerable latitude in the choice of minerals to be included by it. Besides those that constitute the mass of any rock there are the less abundant though common kinds, as well as occasional, exceptional, ones. In any case the mineral may be an original constituent of the rock or one that has been developed in it subsequent to its formation. Rock Minerals, therefore, embrace not only all primary minerals, but all those of secondary origin produced by any manner of alteration of previously existing minerals.
The purpose of this Handbook is to provide, in highly accessible form, selected critical data for professional and student solid Earth and planetary geophysicists. Coverage of topics and authors were carefully chosen to fulfill these objectives. These volumes represent the third version of the “Handbook of Physical Constants.” Several generations of solid Earth scientists have found these handbooks’to be the most frequently used item in their personal library. The first version of this Handbook was edited by F. Birch, J. F. Schairer, and H. Cecil Spicer and published in 1942 by the Geological Society of America (GSA) as Special Paper 36.
The purpose of this Handbook is to provide, in highly accessible form, selected critical data for professional and student solid Earth and planetary geophysicists. Coverage of topics and authors were carefully chosen to fulfill these objectives.
The Rock Quality Designation (RQD) index was introduced 20 years ago at a time when rock quality information was usually available only from geologists’ descriptions and the percent of core recovery. The RQD is a modified core recovery percentage in which unrecovered core, fragments and small pieces of rock, and altered rock are not counted so as to downgrade the quality designation of rock containing these features. Although originally developed for predicting tunneling conditions and support requirements, its application was extended to correlation with in situ rock mechanical properties and, in the 1970s, to forming a basic element of several classification systems. Its greatest value, however, remains as an exploratory tool where it serves as a red flag to identify low-RQD zones which deserve greater scrutiny and which may require additional borings or other exploratory work. Case history experience shows that the RQD red flag and subsequent investigations often have resulted in the deepening of foundation levels and the reorientation or complete relocation of proposed engineering structures, including dam foundations, tunnel portals, underground caverns, and power facilities. <...>
