Theory of creep failure in overconsolidated clay : Nelson, J D; Thompson, E G J Geotech Engng Div...
1
52A 783031 SHEAR AND ]KK~ DEFO~ION IN SANDY SOIL Kozachenko, L S; Kolkov, 0 S SOy Min Sci, V12, N6, Nov-Dec 1976, P576-579 783032 DEFORMATION MECHANISMS IN ALPINE-TYPE UIXPJiMAFIC ROCKS FRQM NE~ ZEALAND Boland, J N Teetonophysics, V39, NI-3, 1977, PZ15-230 783033 MICROSCOPIC STRL~ STUDIES OF EXPERIMENTALLY AND NATURALLY DEFORMED H~ITE ORES Henni~Michaeli, C Tec'tonol~kvsics, V39, NI-3, 1977, P255-271 783034 DETERMINATION OF IN SITU MODULUS OF DEFORMATION IN HARD ROCK MINES OF THE CGEUR D'ALENE DIS~fRICT, IDAHO Patricio, J G; Beus, M D In: Monograph 1 on Rock Mechanics Applications in Mining (New York: AIME, 1977), P129-198 Describes the CSM (Colorado School of Mines) dilatometer and field tests in the Sunshine Mine, Star Mine and Caladay Project over a period of 3 years. Time dependent behaviour 783o35 THEORY OF CREEP FAILURE IN OVERCONSOLIDATED CLAY Nelson, J D; Thompson, E G J Geotech Emgrg Div ASCE, VI03, NGTll, 1977, P1281-1294 A theory of creep failure is developed that describes the relationship between creep, strain softening and time-deperdent failure in over- consolidated clay. The theory asst~nes that time dependent, irreversible strains have a detrimental effect on internal bording as do the plastic strains occurring in the strain softening stage of a triaxial test. An example d~monstrates the application of the theory to predict the life time of a slope in over- consolidated clay. Physico-chemical properties See also: 783047 783036 EFFECT OF LEACHING ON ENGINEERING ~[AVIOUE OF A MARINE SEDIMENT. MO~re, J G; Brown, J D; Rashid, M A Geotechnique, V27, N~, Dec 1977, P517-531 The effects of leachir~ of the organic and inorganic constituents on the shear strength and compressibility of a near-surface marine sediment from the Strait of Canso, Canada, are investigated. The untreated sediment behaves like an overconsolidated clay. From the observed differences in geOtechnical behaviour before and after leaching, a structural bondimg hypothesis is developed to explain this overconsolidated behaviour. 783037 RADIO ~41SSION AND ANC~4ALOUS CHANGES IN ELECTRI- CAL CONDUCTIVITY IN HEATED ROCK AND MINERAL SPECIMENS Vorobev, A A; Salnikov, V N SOy Min Sci, VI2, N5, Sept-Oct 1976~ P461-470 783038 ELECTRICAL PROPERTIES OF THE COUNI~Y ROCKS OF THE KARAGANDA COALFIELD Tonkonogov, M P; Veksler, V A SOy Min SCi, V12j NS, Sept~Oet 1976, P545-553 Investigates correlations between the various electrical properties ard gives a method for predicting the dielectric loss angle, dielectric constant and resistivity of sandstones, argillites and siltstones from a single basic parameter, the resistivity at 29VK. 783039 EFFECT OF CRACKS ON THE THERMAL EXPANSION OF ROCKS Cooper, H W; Simmons, G Earth Planet Scl Let-t, V36, N3, Oct 1977 , p404-4z2 Thermal expansion during the first heating cycle at atmosl~heric pressure was measured in several directions in seven igneous rocks between 25 deg and 400 deg C at slow heating rates. The co- efficient of thermal expansion measured under these conditions increases more rapidly as t~nperature is increased than the average ther- mal expansion coefficient of the constituent minerals. The effect of cracks initially pre- sent in a rock was studied by measuring the full tensor of the coefficient of thermal expansion on two rocks with anisotropic crack districutions. In these two rocks the coeffleient of thermal ~pansion is least in the direction perpendicular to the plane of greatest crack concentration. Both the fractures in the rock and the boundary conditions on the rock are significant for the interpretation of thermal expansion measurments and for their application to other problems. Permeability and capillarity See also: 783204 783040 CHALK PERMEABILITY - A STUDY OF VERTICAL VARIA- TION USING WATER INJECTION TESTS AND BOR~OLE LOGGING Price, M; Robertson, A S; Foster, S S D Wat serv, vS1, N980, Oct 1977, P603-610 783041 DETERMINATION OF PERMEABILITY IN ANISOI~OPIC ROCK MASSES FROM INTEGRAL SAMPLES Rocha, M; Franciss, F In: Structural and Geotechnical Mechanics (Englewood Cliffs, NJ: Prentice-Hall, 1977), P178- 203 A theory is developed by means of which the permeability tensor can be calculated from the attitudes and openings of the fractures in the sample and - if infillings are present - also from their coefficient of permeability. This theory is based on the asstm~ption that the sampled fractures are continuous and plane and have the same characteristics as the section of the fractures present in the samples. Correction factors are derived from the results of pressure tests in situ. The permeability tensor of a rock mass at a point can be determined from a single i~al ssmple, provided this is re- Presentative of the fracturing.
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Transcript of Theory of creep failure in overconsolidated clay : Nelson, J D; Thompson, E G J Geotech Engng Div...
52A
783031 SHEAR AND ]KK~ DEFO~ION IN SANDY SOIL Kozachenko, L S; Kolkov, 0 S SOy Min Sci, V12, N6, Nov-Dec 1976, P576-579
783032 DEFORMATION MECHANISMS IN ALPINE-TYPE UIXPJiMAFIC ROCKS FRQM NE~ ZEALAND
Boland, J N Teetonophysics, V39, NI-3, 1977, PZ15-230
783033 MICROSCOPIC STRL~ STUDIES OF EXPERIMENTALLY AND NATURALLY DEFORMED H~ITE ORES
Henni~Michaeli, C Tec'tonol~kvsics, V39, NI-3, 1977, P255-271
783034 DETERMINATION OF IN SITU MODULUS OF DEFORMATION IN HARD ROCK MINES OF THE CGEUR D'ALENE DIS~fRICT, IDAHO Patricio, J G; Beus, M D In: Monograph 1 on Rock Mechanics Applications
in Mining (New York: AIME, 1977), P129-198
Describes the CSM (Colorado School of Mines) dilatometer and field tests in the Sunshine Mine, Star Mine and Caladay Project over a period of 3 years.
Time dependent behaviour
783o35 THEORY OF CREEP FAILURE IN OVERCONSOLIDATED CLAY
Nelson, J D; Thompson, E G J Geotech Emgrg Div ASCE, VI03, NGTll, 1977,
P1281-1294
A theory of creep failure is developed that describes the relationship between creep, strain softening and time-deperdent failure in over- consolidated clay. The theory asst~nes that time dependent, irreversible strains have a detrimental effect on internal bording as do the plastic strains occurring in the strain softening stage of a triaxial test. An example d~monstrates the application of the theory to predict the life time of a slope in over- consolidated clay.
Physico-chemical properties
See also: 783047
783036 EFFECT OF LEACHING ON ENGINEERING ~[AVIOUE OF A MARINE SEDIMENT.
MO~re, J G; Brown, J D; Rashid, M A Geotechnique, V27, N~, Dec 1977, P517-531
The effects of leachir~ of the organic and inorganic constituents on the shear strength and compressibility of a near-surface marine sediment from the Strait of Canso, Canada, are investigated. The untreated sediment behaves like an overconsolidated clay. From the observed differences in geOtechnical behaviour before and after leaching, a structural bondimg hypothesis is developed to explain this overconsolidated behaviour.
783037 RADIO ~41SSION AND ANC~4ALOUS CHANGES IN ELECTRI- CAL CONDUCTIVITY IN HEATED ROCK AND MINERAL SPECIMENS
Vorobev, A A; Salnikov, V N SOy Min Sci, VI2, N5, Sept-Oct 1976~ P461-470
783038 ELECTRICAL PROPERTIES OF THE COUNI~Y ROCKS OF THE KARAGANDA COALFIELD
Tonkonogov, M P; Veksler, V A SOy Min SCi, V12j NS, Sept~Oet 1976, P545-553
Investigates correlations between the various electrical properties ard gives a method for predicting the dielectric loss angle, dielectric constant and resistivity of sandstones, argillites and siltstones from a single basic parameter, the resistivity at 29VK.
783039 EFFECT OF CRACKS ON THE THERMAL EXPANSION OF ROCKS Cooper, H W; Simmons, G Earth Planet Scl Let-t, V36, N3, Oct 1977 ,
p404-4z2
Thermal expansion during the first heating cycle at atmosl~heric pressure was measured in several directions in seven igneous rocks between 25 deg and 400 deg C at slow heating rates. The co- efficient of thermal expansion measured under these conditions increases more rapidly as t~nperature is increased than the average ther- mal expansion coefficient of the constituent minerals. The effect of cracks initially pre- sent in a rock was studied by measuring the full tensor of the coefficient of thermal expansion on two rocks with anisotropic crack districutions. In these two rocks the coeffleient of thermal ~pansion is least in the direction perpendicular to the plane of greatest crack concentration. Both the fractures in the rock and the boundary conditions on the rock are significant for the interpretation of thermal expansion measurments and for their application to other problems.
Permeability and capillarity
See also: 783204
783040 CHALK PERMEABILITY - A STUDY OF VERTICAL VARIA- TION USING WATER INJECTION TESTS AND BOR~OLE LOGGING
Price, M; Robertson, A S; Foster, S S D Wat serv, vS1, N980, Oct 1977, P603-610
783041 DETERMINATION OF PERMEABILITY IN ANISOI~OPIC ROCK MASSES FROM INTEGRAL SAMPLES
Rocha, M; Franciss, F In: Structural and Geotechnical Mechanics
(Englewood Cliffs, NJ: Prentice-Hall, 1977), P178- 203
A theory is developed by means of which the permeability tensor can be calculated from the attitudes and openings of the fractures in the sample and - if infillings are present - also from their coefficient of permeability. This theory is based on the asstm~ption that the sampled fractures are continuous and plane and have the same characteristics as the section of the fractures present in the samples. Correction factors are derived from the results of pressure tests in situ. The permeability tensor of a rock mass at a point can be determined from a single i~al ssmple, provided this is re- Presentative of the fracturing.
