Download or read book Stochastic and Centrifuge Modelling of Jointed Rock written by Geraldo Ramiro Iglesia and published by . This book was released on 1990 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stochastic and Centrifuge Modelling of Jointed Rock Volume 2 Centrifuge Modelling of Jointed Rock written by and published by . This book was released on 1990 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of the centrifuge for geotechnical research has gained widespread acceptance in soil engineering, but to date, relatively few tests have been performed involving rock. One reason for the scarcity of rock mechanics experiments is the question as to whether a small scale model subject to an elevated gravitational acceleration level reasonably simulates the prototype condition involving discontinuities. The objective of this research was to find out if centrifuge modelling can be used for discontinua and to get further insight into arching mechanisms. To investigate this issue of scaling, a modelling-of-models approach was followed. This was done with a trapdoor model in the centrifuge. The model package was spun up gradually to a desired gravity level, at which the trapdoor was lowered and measurements of the force on the door with the corresponding displacement were taken. Different sizes of small- scale models and of trapdoors were used with various levels of acceleration. An initial series of experiments was conducted with granular materials, namely, New Jersey coarse sand and uniform sized glass beads. These experiments not only allowed us to make comparisons with preceding experiments on the arching mechanism under normal gravity; they also served as a benchmark for the experiments with jointed rock.
Download or read book Stochastic and Centrifuge Modelling of Jointed Rock written by Jun-Suk Lee and published by . This book was released on 1990 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stochastic and Centrifuge Modelling of Jointed Rock written by and published by . This book was released on 1990 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stochastic and Centrifuge Modelling of Jointed Rock written by and published by . This book was released on 1990 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stochastic and Centrifuge Modelling of Jointed Rock written by Olivia Maria Lai Reyes and published by . This book was released on 1990 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Centrifuge Modelling of Jointed Rock written by Geraldo Ramiro Iglesia and published by . This book was released on 1989 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stochastic and Centrifuge Modelling of Jointed Rock written by Herbert H. Einstein and published by . This book was released on 1989 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stochastic and Centrifuge Modelling of Jointed Rock Volume 1 Fracturing of Fractured Rock written by and published by . This book was released on 1990 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rock mass failure can occur through the propagation of cracks emanating from and causing coalescence of pre-existing fractures. The objective of this research was to develop a mechanical model for fracture coalescence which can be used in conjunction with numerical methods to simulate rock mass failure. The study consisted of: (1) Monitoring growth in uniaxially compressed gypsum specimens with pre-existing fractures with various arrangements. Consistent coalescence behavior as a function of preexisting fracture geometry was noted and is documented; (2) Development of an analytical coalescence model based on correlations between computed stress/strain fields and observed fracturing in the experiments. Using this analytical model, satisfactory agreement was achieved between simulated and experimental coalescence behavior as a function of pre-existing fracture geometry.
Download or read book Stochastic and Centrifuge Modelling of Jointed Rock Volume 3 Stochastic and Topological Fracture Geometry Model written by and published by . This book was released on 1990 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: A hierarchical model is developed to represent the geometry of fracture sets. The most important characteristics of this model are the possibility to model sequential fracture genesis as it usually occurs in nature, and to model clustering. This model uses the inhomogeneous or the doubly stochastic (Cox) point process model to represent the midpoints of the primary set. In a second step, the fracture trace lengths of the primary set are modelled. This is done using Maximum Likelihood Estimates (MLE) of the observed data. In a third step, the secondary set is considered; in particular the independence/dependence of the two sets. The correlation of location with trace length is considered with the line-kernel function methods and the nearest neighbor fiber distance method. The hierarchical model has been applied to two cases in which detailed fracture patterns have been observed, one with a single set and one with two sets. The validity of the model was checked by visual comparison between model prediction and mapped patterns and most importantly, by statistical tests such as the second-moment analysis and the Monte Carlo test. A satisfactory fit of the predicted pattern was obtained in both cases.
Download or read book Stochastic and Centrifuge Modelling of Jointed Rock written by Jun-Suk Lee and published by . This book was released on 1989 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stochastic and Centrifuge Modelling of Jointed Rock written by Olivia Maria Lai Reyes and published by . This book was released on 1989 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rock Mechanics Contributions and Challenges written by W. Hustrulid and published by CRC Press. This book was released on 2020-12-18 with total page 1096 pages. Available in PDF, EPUB and Kindle. Book excerpt: The theme of the 31st US Symposium on Rock Mechanics is 'Rock Mechanics contributions and challenges', having as objective the examination and quantification of the progress that has been achieved in addressing the major practical challenges facing the science of rock mechanics and mine design. The 124 papers included in the proceedings cover areas such as: experimental studies (laboratory and field); conceptual, analytical, and numerical modeling; design and construction methods. 35 papers deal with practical mining problems and include information on rock reinforcement technology, blasting, rock bursts, open pit mining, remote sensing and borehole geophysics, mechanical fragmentation, and subsidence. Areas emphasized are coal and metal mine design problems. Other papers deal with the newest computer models, new instruments, fracture mechanics, new laboratory testing techniques, and in situ testing.
Download or read book Centrifuge Modelling of a Rigid Footing on Jointed Rock written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Centrifuge Modelling of a Rigid Footing on Jointed Rock written by Lee Edward Dunham and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rock Testing and Site Characterization written by J.A. Hudson and published by Elsevier. This book was released on 2014-06-16 with total page 971 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rock Testing and Site Characterization
Download or read book Centrifuge Modelling of a Rigid Footing on Jointed Rock microform written by Lee Edward Dunham and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1998 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
