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Statistical study of uniform cycles in earthquakes
!I7A
816067 STATISTICAL STUDY OF UNIFORM CYCLES IN EARTHQUAKES Hs/dar, A; Tang, W H J Geotech EDging Div ASCE, VI07, NGTS, May Attempts to study ani suggest a statistical correlation between the irregularly patterned earthquake loading ard the equivalent uniform stress cycles, ani to compare the statistical relationship with the one used in practice. The factors involved in the process of converting the earthquake loading to equivalent uniform stress cycles are identified. Considering the uncertainty associated with these factors (which may not be negligible in mamy cases) the problem is studied statistically, based on the results published in the literature, and compared with other existing methods.
Hydrogeology Groundwater 816068 RECHARGE MECHANI~S AND GROUNDWATER FLOW IN THE CHALK AND DRIFT DEPOSITS OF S O ~ N EAST ANGLIA Lloyd, J W; Harker~ D; Baxer~ale, R A Q J Engr~ Geol, VI4, N2, 1981, ~7-96 81606 9 STUDY OF SURFACE AND U N D ~ R G R O ~ DRAINAGE OF THE GASPE MINES OPEN PIT AT M U ~ I X x E , QUEBEC Liard, A; Sauriol, 0; Sommelet, H CIM Bull, V74, N829, May 1981, P73-80 The study was in 4 parts: (i) compilation of geologic, hydrologic and h~rogec~ogic data, (2) d rminetlon of hydraulic properties of the rock mass from structural studies and permeability tests, (3) simulation by means of a mathematical model of coniitions in the rock mass, (~) application of the model to different drainage hypotheses.
Underground E xcavatlons @ See also: 816010 816070 VERTICAL PATI~N FOR PmI'MOLE~ STORAGE CAVERNS IN WEAK ROCK C~I,~ nd~, A Turin Turmlg, Vl3, ~, June 1981, PII-13 Describes the P o I ~ system of a group of vertical caverns in a suitable pattern designed to provide ease of excavation, operation ani mainten~nee in weak rocks where roof conditions may be hazardous, precluding the construction of horizontal caverns. 816071 SOIL-bu'.:~:,.STRUCTURE RESPONSE TO LIVE LOADS Bakht, B J Geotech Engng Div ASCE, VI07, NGT6, June 1981, PT'/9-798 Various e x l s t l r ~ methods are described for pred/ctlng live load effects in conduit walls of soil-steel structures (also referred tc as longspan metal culverts). Also described are three live load tests on in-service soil-steel struc-
tures. In the light of the test results, the current methods are overly comserw-tive. The test resltlts confirm t h a t the met~11~c shell undergoes little bending, especially if the conduit is circular. The impact factor is not ne@liglb~e even if the depth of cover is larger than 3ft. An improved simplified method is presented to calculate the conduit wall thrust due to live loads. Auth. 816072 GEOLOGIC STORAGE OF RADIOACTIVE WASTE: FIELD STUDIES IN SWEDEN Witherspoon, P A; CooM, N G W; Gale, J E Science, V211, N ~ 5 , 27 Feb 1981, l ~ - ~ D O Describes heater experiments conducted in a quartz mor~omlte rock mass adjacent to an ore mine in Stripe, Sweden. The thermcmechanical investigations were designed to study in situ rock behaviour at depths below the surface, and thermal iceds comparable to those for a waste depository. The tests demonstrate the importance of h~irogeology and the difficulties in pred/cting the thermomechanical behaviour of fractured granitic rocks. 816073 JACKING CONCRETE PIPES Pipe Jackir~ Association, Design and Specification Bulletin ~D, Jurm 1980, 16P Includes a brief section on how grcund cor~itions - stability, water intrusion, soil stremgt~ and frictional resistanoe - affect the practicabillty cf Jacking pipes. Avail: The Association, Suite 411, London International Press Centre, Shoe Lane, London EC~ 3JB, UK 816074 ROCK MECHANICS CONSIDERATIONS FOR IN-SI~U DEVELOPMENT OF 0IL SANDS Devenmy, D W; Raisbeck, J M In: Undergrouni Rock Em~dnearimg (Papers to 13th Canadian Rock Mech~mlcs Symposi1~J,, Toronto, 28-29 May 1980), P90-96. Publ Montreal: CIMM, 1980 Describes in situ facilities to illustrate types of access required to mine deeply buried oil sand deposits. Discusses requirements for design of the openings and induced fracture systems. 816075 RELATION BETWEEN SOME OF THE ~5HODS FOR PREDICTING THE PENETRATION RATE OF ~ITLL-FACE BORING MACHINES Gill, D E; Piehette, C; Rochon, P In: Undergrouni Rock Engineering (Papers to 13th Canadian Rock Mechanics Symposium, Toronto, 28-29 May 1980), PI03-!I0. Publ Montreal: CIMM, 1980 Proposes a model to relate the rock parameters involved with the two main methods for pred/cting the penetration rate of_ full face boring machines. The first method m~kes use of the uniaxlal strength of the rock to be bored, type second method involves various irE_ices obtained from indentation tests. 816076 NUCLEAR WASTE VAULT SEALING Gyenge, M In: Undergrourd Rock Englneerimg (Papers to 13th Canadian Rock Mechanics Symposium, Toronto, 28-29 ~[ay 1980), P!81-!92. Publ Montreal : CIMM, 1980
816067 STATISTICAL STUDY OF UNIFORM CYCLES IN EARTHQUAKES Hs/dar, A; Tang, W H J Geotech EDging Div ASCE, VI07, NGTS, May Attempts to study ani suggest a statistical correlation between the irregularly patterned earthquake loading ard the equivalent uniform stress cycles, ani to compare the statistical relationship with the one used in practice. The factors involved in the process of converting the earthquake loading to equivalent uniform stress cycles are identified. Considering the uncertainty associated with these factors (which may not be negligible in mamy cases) the problem is studied statistically, based on the results published in the literature, and compared with other existing methods.
Hydrogeology Groundwater 816068 RECHARGE MECHANI~S AND GROUNDWATER FLOW IN THE CHALK AND DRIFT DEPOSITS OF S O ~ N EAST ANGLIA Lloyd, J W; Harker~ D; Baxer~ale, R A Q J Engr~ Geol, VI4, N2, 1981, ~7-96 81606 9 STUDY OF SURFACE AND U N D ~ R G R O ~ DRAINAGE OF THE GASPE MINES OPEN PIT AT M U ~ I X x E , QUEBEC Liard, A; Sauriol, 0; Sommelet, H CIM Bull, V74, N829, May 1981, P73-80 The study was in 4 parts: (i) compilation of geologic, hydrologic and h~rogec~ogic data, (2) d rminetlon of hydraulic properties of the rock mass from structural studies and permeability tests, (3) simulation by means of a mathematical model of coniitions in the rock mass, (~) application of the model to different drainage hypotheses.
Underground E xcavatlons @ See also: 816010 816070 VERTICAL PATI~N FOR PmI'MOLE~ STORAGE CAVERNS IN WEAK ROCK C~I,~ nd~, A Turin Turmlg, Vl3, ~, June 1981, PII-13 Describes the P o I ~ system of a group of vertical caverns in a suitable pattern designed to provide ease of excavation, operation ani mainten~nee in weak rocks where roof conditions may be hazardous, precluding the construction of horizontal caverns. 816071 SOIL-bu'.:~:,.STRUCTURE RESPONSE TO LIVE LOADS Bakht, B J Geotech Engng Div ASCE, VI07, NGT6, June 1981, PT'/9-798 Various e x l s t l r ~ methods are described for pred/ctlng live load effects in conduit walls of soil-steel structures (also referred tc as longspan metal culverts). Also described are three live load tests on in-service soil-steel struc-
tures. In the light of the test results, the current methods are overly comserw-tive. The test resltlts confirm t h a t the met~11~c shell undergoes little bending, especially if the conduit is circular. The impact factor is not ne@liglb~e even if the depth of cover is larger than 3ft. An improved simplified method is presented to calculate the conduit wall thrust due to live loads. Auth. 816072 GEOLOGIC STORAGE OF RADIOACTIVE WASTE: FIELD STUDIES IN SWEDEN Witherspoon, P A; CooM, N G W; Gale, J E Science, V211, N ~ 5 , 27 Feb 1981, l ~ - ~ D O Describes heater experiments conducted in a quartz mor~omlte rock mass adjacent to an ore mine in Stripe, Sweden. The thermcmechanical investigations were designed to study in situ rock behaviour at depths below the surface, and thermal iceds comparable to those for a waste depository. The tests demonstrate the importance of h~irogeology and the difficulties in pred/cting the thermomechanical behaviour of fractured granitic rocks. 816073 JACKING CONCRETE PIPES Pipe Jackir~ Association, Design and Specification Bulletin ~D, Jurm 1980, 16P Includes a brief section on how grcund cor~itions - stability, water intrusion, soil stremgt~ and frictional resistanoe - affect the practicabillty cf Jacking pipes. Avail: The Association, Suite 411, London International Press Centre, Shoe Lane, London EC~ 3JB, UK 816074 ROCK MECHANICS CONSIDERATIONS FOR IN-SI~U DEVELOPMENT OF 0IL SANDS Devenmy, D W; Raisbeck, J M In: Undergrouni Rock Em~dnearimg (Papers to 13th Canadian Rock Mech~mlcs Symposi1~J,, Toronto, 28-29 May 1980), P90-96. Publ Montreal: CIMM, 1980 Describes in situ facilities to illustrate types of access required to mine deeply buried oil sand deposits. Discusses requirements for design of the openings and induced fracture systems. 816075 RELATION BETWEEN SOME OF THE ~5HODS FOR PREDICTING THE PENETRATION RATE OF ~ITLL-FACE BORING MACHINES Gill, D E; Piehette, C; Rochon, P In: Undergrouni Rock Engineering (Papers to 13th Canadian Rock Mechanics Symposium, Toronto, 28-29 May 1980), PI03-!I0. Publ Montreal: CIMM, 1980 Proposes a model to relate the rock parameters involved with the two main methods for pred/cting the penetration rate of_ full face boring machines. The first method m~kes use of the uniaxlal strength of the rock to be bored, type second method involves various irE_ices obtained from indentation tests. 816076 NUCLEAR WASTE VAULT SEALING Gyenge, M In: Undergrourd Rock Englneerimg (Papers to 13th Canadian Rock Mechanics Symposium, Toronto, 28-29 ~[ay 1980), P!81-!92. Publ Montreal : CIMM, 1980