Rock mechanic. lecture.12batbold113oThis document discusses time-dependent behavior in rocks that occurs over a wide range of strain rates in rock mechanics and engineering applications. It introduces the topic, explaining there are 15 orders of magnitude between high strain rates like explosions and low strain rates like gradual deformation over decades. The document then covers dynamic rock properties, stress waves, time-dependent concepts like creep and relaxation, and rheological models. It discusses the relevance for rock engineering, including concerns over extrapolating short-term test data to designs that must last 1,000 years.
Rock mechanic. lecture.12batbold113oThis document discusses time-dependent behavior in rocks that occurs over a wide range of strain rates in rock mechanics and engineering applications. It introduces the topic, explaining there are 15 orders of magnitude between high strain rates like explosions and low strain rates like gradual deformation over decades. The document then covers dynamic rock properties, stress waves, time-dependent concepts like creep and relaxation, and rheological models. It discusses the relevance for rock engineering, including concerns over extrapolating short-term test data to designs that must last 1,000 years.
Mining dictionarybatbold113oThis document is the foreword and preface sections of a dictionary of mining, mineral, and related terms published by the U.S. Bureau of Mines in 1996. It discusses the need for an updated dictionary given technological and regulatory changes. It describes the collaborative process between the Bureau of Mines and the American Geological Institute to develop the new dictionary over 5 years with input from experts. The dictionary contains over 28,500 terms focused on mining and excludes some related fields.
Engineering rock mechanics volume1batbold113oThis document provides an introduction to the principles of engineering rock mechanics. It discusses key topics in rock mechanics including stress, strain, intact rock properties, discontinuities, rock masses, permeability, anisotropy, inhomogeneity, testing techniques, rock mass classification systems, rock dynamics, interactions in rock mechanics, excavation principles, stabilization principles, surface excavation instability mechanisms, and design and analysis of surface excavations. The document is intended to serve as a textbook on rock mechanics for engineering students and professionals.