Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Research progress is reported in the following areas: (1) the delineation of the boundary separating elastic-brittle and transient-1 semibrittle behavior of granite and of its volcanic and metamorphic equivalents, rhyolite and granite gneiss; (2) the variation of fracture permeability in Sioux Quartzite, Westerly Granite and a fine-1 grained gabbro as a function of effective pressure and hydrothermal alterations; and (3) determine the mechanical properties of selected rocks at high temperatures and pressures. (ACR).
Mechanical and Transport Properties of Rocks at High Temperatures and Pressures. Task I, the Physical Nature of Fracturing at Depth. Technical Progress Report No. 1, 1 March 1980-30 November 1980
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Research progress is reported in the following areas: (1) the delineation of the boundary separating elastic-brittle and transient-1 semibrittle behavior of granite and of its volcanic and metamorphic equivalents, rhyolite and granite gneiss; (2) the variation of fracture permeability in Sioux Quartzite, Westerly Granite and a fine-1 grained gabbro as a function of effective pressure and hydrothermal alterations; and (3) determine the mechanical properties of selected rocks at high temperatures and pressures. (ACR).
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Research progress is reported in the following areas: (1) the delineation of the boundary separating elastic-brittle and transient-1 semibrittle behavior of granite and of its volcanic and metamorphic equivalents, rhyolite and granite gneiss; (2) the variation of fracture permeability in Sioux Quartzite, Westerly Granite and a fine-1 grained gabbro as a function of effective pressure and hydrothermal alterations; and (3) determine the mechanical properties of selected rocks at high temperatures and pressures. (ACR).
Energy Research Abstracts
Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 504
Book Description
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 504
Book Description
Geophysics & Tectonics Abstracts
Author:
Publisher:
ISBN:
Category : Geology, Structural
Languages : en
Pages : 522
Book Description
Publisher:
ISBN:
Category : Geology, Structural
Languages : en
Pages : 522
Book Description
Government Reports Announcements & Index
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1064
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1064
Book Description
Government Reports Annual Index
Author:
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 1300
Book Description
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 1300
Book Description
Mechanical and Transport Properties of Rocks at High Temperatures and Pressures. Task III. Mechanical Properties of Rocks at High Temperatures and Pressures. Final Report, 1 March 1980-29 February 1984
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
This report summarizes the research performed to gain a fundamental understanding of the mechanical and transport properties of rocks under confining pressure and elevated temperature. There have been many contributions to our understanding of the mechanical behavior or rocks at high temperatures and pressures, but perhaps the three most outstanding contributions are the data which: (a) have helped to demonstrate the scientific feasibility of energy extraction from buried magma by assessing the likelihood of the rock mass to support stable boreholes at the pressures, temperatures (to partial melting), and aqueous conditions apt to occur in crystalline rocks above buried magma chambers; (b) have demonstrated that crystalline rocks deform primarily by brittle fracture when deformed at effective confining pressures to 200 MPa and temperatures to partial melting (to>1000°C), water-saturated or room-dry, and in constant strain rate tests (e dot = 10−4−1°sup -7//sec) or in creep tests; and (c) have shown that under these same conditions the time-dependent behavior of the rocks in the quasi-steady state regime is well described by the flow law: e dot = Asigma(superscript n)exp( -Q/RT) - a formulation previously thought to be applicable to rocks deforming primarily by crystal plasticity. This result suggests that fracture is also a time-dependent, thermally-activated process.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
This report summarizes the research performed to gain a fundamental understanding of the mechanical and transport properties of rocks under confining pressure and elevated temperature. There have been many contributions to our understanding of the mechanical behavior or rocks at high temperatures and pressures, but perhaps the three most outstanding contributions are the data which: (a) have helped to demonstrate the scientific feasibility of energy extraction from buried magma by assessing the likelihood of the rock mass to support stable boreholes at the pressures, temperatures (to partial melting), and aqueous conditions apt to occur in crystalline rocks above buried magma chambers; (b) have demonstrated that crystalline rocks deform primarily by brittle fracture when deformed at effective confining pressures to 200 MPa and temperatures to partial melting (to>1000°C), water-saturated or room-dry, and in constant strain rate tests (e dot = 10−4−1°sup -7//sec) or in creep tests; and (c) have shown that under these same conditions the time-dependent behavior of the rocks in the quasi-steady state regime is well described by the flow law: e dot = Asigma(superscript n)exp( -Q/RT) - a formulation previously thought to be applicable to rocks deforming primarily by crystal plasticity. This result suggests that fracture is also a time-dependent, thermally-activated process.
Government Reports Annual Index: Keyword A-L
Author:
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 1528
Book Description
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 1528
Book Description
Mechanical and Transport Properties of Rocks at High Temperatures and Pressures. Task II. Fracture Permeability of Crystalline Rocks as a Function of Temperature, Pressure, and Hydrothermal Alteration. Technical Progress Report No. 3, 1 March 1982-30 October 1982
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Research progress for the period March 1982 through October 1982 is reported. The permeability system that is nearing completion is briefly described. Several complementary experiments were conducted: (1) a study of the evolution of surfaces undergoing dissolution, with specific emphasis on the changes of surface roughness and asperity shape; and (2) an experiment to assess whether measureable pressure solution could occur in the time constraints typical of the proposed permeability experiments. (ACR).
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Research progress for the period March 1982 through October 1982 is reported. The permeability system that is nearing completion is briefly described. Several complementary experiments were conducted: (1) a study of the evolution of surfaces undergoing dissolution, with specific emphasis on the changes of surface roughness and asperity shape; and (2) an experiment to assess whether measureable pressure solution could occur in the time constraints typical of the proposed permeability experiments. (ACR).
Biozanieczyszczenia w budynkach a zdrowie. Konferencja naukowa ; 3
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Interference Problems on Wing-fuselage Combinations in Inviscid, Incompressible Flow
Author: Aeronautical Research Council (Great Britain)
Publisher:
ISBN: 9780114709266
Category : Airplanes
Languages : en
Pages : 1212
Book Description
Publisher:
ISBN: 9780114709266
Category : Airplanes
Languages : en
Pages : 1212
Book Description