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Showing 1 to 20 of 61 for “"Rock mechanics"”.
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Rock mechanics instrumentation applied to longwall coal mining
Includes bibliographical references.
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Some rock mechanics problems with application for hydraulic fracturing
Hydraulic fracturing is an essential tool used to enhance connectivity in shale gas reservoirs by maximizing the intersection between the hydraulic fracture (HF) and pre-existing natural fractures (NF) or faults. The technique is most effective when the hydraulic fracture crosses natural fractures …
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A Boundary Element Method for Thermo-poroelasticity with Applications in Rock Mechanics
… processes play an important role in many geomechanics problems, such as borehole stability analysis and studies of initiation and propagation of hydraulic fractures. Thermal effects, as well as hydraulic effects, can greatly change the stresses and pore pressure fields around an underground …
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Rock Mechanics Aspects in the Design of the Churchill Falls Underground Powerhouse, Labrador
Made available in DSpace on 2014-12-10T22:21:25Z (GMT). No. of bitstreams: 1 7114677.pdf: 6463442 bytes, checksum: 846d9e549ee3db4c96fbfd1647aef4c6 (MD5) Previous issue date: 1970
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Analysis of rock mechanics and gas dynamics of flame-jet thermal spallation drilling
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1986.
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Effect of Micro-Particle Additions on Frictional Energy Dissipation and Strength of Concrete
… and concrete-like materials performed in the "Rock Mechanics Laboratory" of Virginia Polytechnic Institute and State University, Virginia, USA. Data deriving from these experiments are analyzed on the basis of the micro-macro identification theory. Interesting predictions of the real mechanical …
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Geotechnical Properties Of the Travis Peak (Hosston) Formation in East Texas: A Compressive and Tensile Strength Analysis using Regression Analysis.
<p>The estimation of rock mass strength is a key parameter in geotechnical engineering which is used in the design of geotechnical structures like tunnels, dams and slopes. Geotechnical engineering is the branch of civil engineering which works on the principles of soil and rock mechanics to …
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New Fracture Toughness Tests for Rock and Concrete with Particular Reference to Rock
This thesis applies the concepts of Fracture Mechanics to some of the problems of Rock Mechanics.<br/><br/>A review of the literature shows that Fracture Mechanics is applicable to ceramic materials, such as rocks and concrete, but no test has been available which can quickly and easily measure the …
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Modelling of Subsidence in Geothermal Fields
… presence of weak and soft highly compressible rocks have caused surface subsidence. For predicting subsidence, there was a need to develop coupled thermal-hydro-mechanical (THM) models. A hierarchy of 1-D, R-Z and 3-D THM models were set up using data and knowledge from the comprehensive …
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The effect of inclusions in brittle material
… is also compared to past work done by the MIT rock mechanics group on specimens containing double flaws. These results are found to be remarkably similar. In addition to studying cracking behavior, the goal of this study is to provide a database for future work in formulating predictive models …
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Acoustic monitoring of hydraulic stimulation in granites
… stimulation of low permeability EGS reservoir rock is widely employed to develop this resource and is generally required to make unconventional resources an economically viable resource. Significant challenges for EGS technology include poor connectivity between injection and production wells …
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The effect of complex inclusion geometries on fracture and crack coalescence behavior in brittle material
… Along with previous work conducted by the MIT rock mechanics group, this research provides detailed experimental observations regarding both the cracking and coalescence behaviors of inclusions in a brittle material.
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Effect of flaw shape and penetrating fluids on hydraulic fracture initiation and propagation in porous material (gypsum)
… of this technique arose the necessity for the Rock Mechanics field of a better and complete understating of its fundaments in order to improve the efficiency of the methods applied. This thesis focus in the analysis of some of these fundamentals: the effect of the geometry of the pressurized …
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Using the Finite Discrete Element Method (FDEM) to Correlate Simulated Microfractures to Acoustic Emissions in Brittle Anisotropic Rock
The study of rock mechanics is a rapidly evolving field of research due to the increasing demand for underground infrastructure in deeper and more complex rock masses that includes structure such as joints and rock fabric. Among the increased demand is the long-term storage of radioactive waste …
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Building, Updating and Verifying Fracture Models in Real Time for Hard Rock Tunneling
… govern the mechanical and fluid flow behavior of rock masses. Tunneling and other rock mechanics applications therefore require the characterization of rock fractures based on geological data. Field investigations produce only a limited amount of data from boreholes, outcrops, cut slopes, and …
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Poroelastic Calibration for Hydromechanically Coupled Numerical Discontinuum Models with Application in Low Permeability Hard Rock
… response the poroelastic response of the rock and flow through the intact rock can be incorporated into numerical models. This thesis provides a process to calibrate grain based poroelastic discontinuum numerical models which simulate the elastic response and fluid flow through low …
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An experimental investigation of the creep behavior of an underground coalmine roof with shale formation
… of the in-situ stresses in the surrounding rock. Because of the opening, the surrounding stratum deforms to fill the opening and return to the pre-mining stress state. Such deformation, if allowed to continue, will lead to failure of the strata, which creates an unsafe work environment. …
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Hydraulic fracturing through 3D printing and lattice modelling
… Firstly, the potential of 3D printing on rock mechanics is explored by Polylactic acid (PLA) material, but its plastic property inhibits the direct simulation of rocks. Then, more brittle powder-based gypsum-like 3D printed specimens are successfully fractured by the split Hopkinson …
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Fracture toughness determination and micromechanics of rock under Mode I and Mode II loading
… of Mode II (shear) fracture toughness, KIIC of rock and compares the outcome to results from Mode I (tensile) fracture toughness, KIC, testing using the International Society of Rock Mechanics Chevron-Bend method.Critical Mode I fracture growth at ambient conditions was studied by carrying out a …
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