Добрый день, Коллеги. Важное сообщение, просьба принять участие. Музей Ферсмана ищет помощь для реставрационных работ в помещении. Подробности по ссылке
1. CONSTITUTIVE MODELS FOR GEOMATERIALS 1.1 Mathematical formulation On the incremental behaviour of granular soils F Calvetti, C. Tamagnini & G. Viggiani Micromechanical model for softening and dilatation of rock joints A. Misra On failure criteria incorporating a scalar anisotropy parameter D. Lydzba & S. Pietruszczak A new macroscopic approach for brittle damage: anisotropy and unilateral effect H. Welemane & F. Cormery A constitutive model for North Sea Chalk: application to reservoir compaction and waterflooding R. Charlier, F. Collin, C. Schroeder, P. Illing, P. Delage, Y.J. Cui & V De Gennaro Modelling principal stress rotation effects with multilaminate type constitutive models for clay H.P. Neher, M. Cudny, C. Wiltafsky & H.F. Schweiger
Masonry Structures Comparative computations of masonry arch bridges using continuum and discontinuum mechanics R. Schlegel, K. Rautenstrauch & J. Will Modeling stone masonry dynamics with 3DEC J.V. Lemos Failure analysis of masonry shear walls R. Schlegel & K. Rautenstrauch Tunnels and Caverns The Gotthard-Base-Tunnel: conceptual modeling for tunneling extremely weak zones H. Konietzky, L. te Kamp & H. Hagedorn A study on the deformation of the lining of a circular tunnel according to the variation of ground condition Y.S. Oh, T.W. Ha, J.S. Lee & Y.W. Park
The field of geotechnical earthquake engineering, like the related fields of engineering seismology and structural earthquake engineering in the broad discipline of earthquake engineering, has advanced dramatically since the first edition of this book was published. Advances have come with the occurrence and investigation of numerous earthquakes, both small and large, with the massive increases in computational power now at the hands of engineers and scientists, and with advances in the analytical tools that leverage those computational capabilities.
В курсе лекций рассмотрено комплекс вопросов о физические процессы горного производства. Дано горнотехнологические характеристики и параметры пород, скальные, полускальные, плотные, мягкие и сыпучие породы, их разрушение в различных условиях. Дана классификация горнотехнологических параметров горных пород.
This volume highlights some of the frontiers in the study of plastic deformation of minerals and rocks. The research into the plastic properties of minerals and rocks had a major peak in late 1960s to early 1970s, largely stimulated by research in the laboratory of D.T. Griggs and his students and associates. Tt is the same time when the theoiy of plate tectonics was established and provided a first quantitative theoretical framework for understanding geological processes. The theory of plate tectonics stimulated the study of deformation properties of Earth materials, both in the brittle and the ductile regimes.
Development of "oal mining throughout the world has increased in the last decade due to the need for energy, and this trend will continue, at least, until the end of this century. Increased production requires enlarging underground mine structures and rapid coal extraction, in which coal mine strata mechanics play an essential role. Coal mine strata mechanics first interested me in the late 1940's during practical work as a student and later as a graduate mining engineer in St. Barbara Coal Mine, Yugoslavia. I was fascinated in observing the mechanics of stress concentration and relaxation manifested by deformation and failure of coal pillars and roof falls in roadways, as well as effective strata control by almost illiterate miners as an integral part of mine operations.
Приведены материалы по теоретическому и экспериментальному обоснованию механизма формирования удароопасной ситуации при подземной разработке угольных месторождений. Дан анализ опыта предотвращения удароопасности углепородного массива при отработке мощных и средней мощности угольных пластов. Определена область применения мероприятий в различных горно-геологических условиях. Для студентов, обучающихся по направлению подготовки дипломированных специалистов «Горное дело» по специальности «Подземная разработка месторождений полезных ископаемых».
Для ориентирования керна вдоль всей его поверхности проводится линия, соединяющая отметки ориентирования керна. Процесс нанесения линии на керн должен включать в себя: • Для ориентирования керна начните с первой отметки ориентирования и выложите керн на специально отведенном столе (где возможна фиксация керна), убедитесь, что части керна собраны точно. Кусочки керна должны быть плотно прижаты друг к дру-гу. Прочертите линию вниз от отметки ориентирования по направлению скважины как можно дальше;
Geological hazard and the lack of appropriate survey, design and construction instruments for tackling those terrains we call “difficult”, with good prospects of success, have always made the design and construction of underground works a risky affair, which could not therefore be faced with the same degree of accuracy as other civil engineering works. As a consequence they have always occupied a subordinate position with respect to similar surface constructions and in the past they were only resorted to when the latter seemed impractical or of little use.
В брошюре изложены основы расчета фундаментов на упругом основании по методу двух коэффициентов постели; приведен критический анализ литературы по данному вопросу и рассмотрены особенности методики экспериментального определения новых расчетных характеристик. Ккига рассчитана на научных работников, аспирантов и инженеров-проектировщиков.
