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Geotechnical testing for Leigh creek coalfield
127.A
Freezing 825203 P R ~ I C T I O N OF FROST PENETRATION. SHORT COMMUNICATION Bell, G E Int J Nt~n Anal Meth Geomech, V6, N2, AprilJune 1982, P287-290 The heat balance integral approach is used to solve a one-dimensional frost penetration problem. 82520~ SEGREGATION POTENTIAL OF A FREEZING SOIL Korred, J M; Mcrgenstern, N R Can Geotech J, VI8, N~, Nov 1981, I~482-~I The conditions that affect the segregation potential (which couples mass flow to heat flew) of a soil sample at the onset of the f ~ t i o n of the final ice lens during one dimensional freezing are analysed. A thermodymamic ar~lysis of the frozen fringe is presented shewing the dependence of the segregation potential on suction in the fringe. Experimental results indicate that segregation potential is a function of average suction in the fringe and is also dependent on the freezing path.
tion Test. Four different drill rigs were used to atudy the factors that affected delivered energy. Four definitions of e ~ g y ratio are also l~esemted in c~xler to establish a mammon terminology when comparing energy data f ~ different drill rigs perfcrmirg the Standsrd Penetration Test. 825208 CC~ACTION P R O I ~ E S OF BAY OF PLENTY VOLCANIC SOILS, NEW ZEALAND Patton, I M; Olsen, A J Proc 3rd Australia-N~ Zealand Comference on Geomechanics, Wellington, 12-16 May 1980, Vl, P165-169. Publ Wellington: New Zealand Institution of Emglneers, 1980 A 3.3km earthlined headworks canal was to be constructed at the Ruahihi hydroelectric power plant. The soils on site were founl to have high water content, high plasticity, high sensitivity amd low bulk density, due to the l~esence of allal~hane, causing l~Oblems with excavation and compaction. Compaction tests to investigate the effects of Im~e-treatment of the soil (eg. water content) were carried out in order to establish parameters for compsntior, control.
825209 GEOTECH~-fCAL
Site Investigation and Field Observation See also: 825127
825205
SITE INVESTIGATION USES ODEX Civ Engng, London, June 1982, P26-27 Describes the use Of the Odex ~ b 1 2 r d e n drillimg and casing system (using a down-the-hole hammer) in a site investigation progra~ne in Wales, UK. At intervals the down-the-hole ha~aer was withdrawn and standard penetration tests carried out. On reaching bedrock coring was carried out.
825206 TRANSIENT
TECHNIOUE FOR IN-SITU T H ~ PROPERTY MEASUReMENtS Yamada, S E Int J Rock Mech Min Sei, VIg, N3, June 1982,
P1~152 A method for in-situ thermal property measurements is presented. It ms~kes use of the early transient temperature behaviour at the borehole wall in response to the constant heat supply in the borehole. The use of early phase is aPlropriate since the assmmption Of cylindrical radial heat flow holds with a good accuracy. Field data from Avery Island Salt Mine was used for practical application. The obtained thermal propel-ties were subsequently substituted in the nomdimensional result given by Carslaw and Jaeger ard also used as input parameters in a finite element analysis. The measured temperature behaviour was closely reproduced. ENERGY M E A ~ N T 825207 SPT ~ Kovacs, W D; Sslamone, L A J Geoteeh Engng Div ASCE, VI08, NGg~, AImil
1S82, P599-62o Describes a field messurement system and procedure to measure the kinetic energy at impact and the delivered energy in the drill stem for a drill rig system performing the Standard Penetra-
TESTING FOR LEIGH C R E ~ COALFIELD Cavagnsro, R L Proc 3rd Australia-New Zealand Conference on Geomechanlcs, Wellington, 12-16 May 1980, VI, P237-2~2. Publ We/lington: New Zealand Institution of Engineers, i~80
The paper presents the results of some of the field and laboratory testing undertaken in providing geotechnieal mine planning constraints at the Leigh Creek Coalfield, South Australia. The approach adopted to systematically test large amounts of drill core is described. Correlations developed between the basic classification test, the Point Load Strength Index, and other more sophisticated tests used in geotechnical analysis are presented. In particular the difficulties of testing material transitional between strong 'soils' and weak 'hard rocks', the characteristics of rock defects with very low residual strengths, and the simplification of a test used in assessing diggability of bucketwheel excavators are described. Auth.
Core recovery, logging, probing, boring and sampling 825210 C O N T R O I ~
EXTRUEIOIQ OF THIN-WALLED TUBE SAMPLES. TECHNICAL NOTE Eischens, G R Geotech Test J, V4, NI, March 1981, I~1-43
Presents a simple method for calihratirg an extrmder in c~der to control the extruder ram forces. It is suggested that a l~essure gauge and a byPass valve should be incc~parated into the extruder in order to monitor the extrusion force applied to the sample.
Geophysical techniques See slsO: 825056
825211 INVERSE PROBLEM OF THE SHEAR MODULUS AND DENSITY PROFILEs OF A L A ~ EARTH Coen~ S J Geophys Res, V86, NB7, l0 July 1981, P60526056
Freezing 825203 P R ~ I C T I O N OF FROST PENETRATION. SHORT COMMUNICATION Bell, G E Int J Nt~n Anal Meth Geomech, V6, N2, AprilJune 1982, P287-290 The heat balance integral approach is used to solve a one-dimensional frost penetration problem. 82520~ SEGREGATION POTENTIAL OF A FREEZING SOIL Korred, J M; Mcrgenstern, N R Can Geotech J, VI8, N~, Nov 1981, I~482-~I The conditions that affect the segregation potential (which couples mass flow to heat flew) of a soil sample at the onset of the f ~ t i o n of the final ice lens during one dimensional freezing are analysed. A thermodymamic ar~lysis of the frozen fringe is presented shewing the dependence of the segregation potential on suction in the fringe. Experimental results indicate that segregation potential is a function of average suction in the fringe and is also dependent on the freezing path.
tion Test. Four different drill rigs were used to atudy the factors that affected delivered energy. Four definitions of e ~ g y ratio are also l~esemted in c~xler to establish a mammon terminology when comparing energy data f ~ different drill rigs perfcrmirg the Standsrd Penetration Test. 825208 CC~ACTION P R O I ~ E S OF BAY OF PLENTY VOLCANIC SOILS, NEW ZEALAND Patton, I M; Olsen, A J Proc 3rd Australia-N~ Zealand Comference on Geomechanics, Wellington, 12-16 May 1980, Vl, P165-169. Publ Wellington: New Zealand Institution of Emglneers, 1980 A 3.3km earthlined headworks canal was to be constructed at the Ruahihi hydroelectric power plant. The soils on site were founl to have high water content, high plasticity, high sensitivity amd low bulk density, due to the l~esence of allal~hane, causing l~Oblems with excavation and compaction. Compaction tests to investigate the effects of Im~e-treatment of the soil (eg. water content) were carried out in order to establish parameters for compsntior, control.
825209 GEOTECH~-fCAL
Site Investigation and Field Observation See also: 825127
825205
SITE INVESTIGATION USES ODEX Civ Engng, London, June 1982, P26-27 Describes the use Of the Odex ~ b 1 2 r d e n drillimg and casing system (using a down-the-hole hammer) in a site investigation progra~ne in Wales, UK. At intervals the down-the-hole ha~aer was withdrawn and standard penetration tests carried out. On reaching bedrock coring was carried out.
825206 TRANSIENT
TECHNIOUE FOR IN-SITU T H ~ PROPERTY MEASUReMENtS Yamada, S E Int J Rock Mech Min Sei, VIg, N3, June 1982,
P1~152 A method for in-situ thermal property measurements is presented. It ms~kes use of the early transient temperature behaviour at the borehole wall in response to the constant heat supply in the borehole. The use of early phase is aPlropriate since the assmmption Of cylindrical radial heat flow holds with a good accuracy. Field data from Avery Island Salt Mine was used for practical application. The obtained thermal propel-ties were subsequently substituted in the nomdimensional result given by Carslaw and Jaeger ard also used as input parameters in a finite element analysis. The measured temperature behaviour was closely reproduced. ENERGY M E A ~ N T 825207 SPT ~ Kovacs, W D; Sslamone, L A J Geoteeh Engng Div ASCE, VI08, NGg~, AImil
1S82, P599-62o Describes a field messurement system and procedure to measure the kinetic energy at impact and the delivered energy in the drill stem for a drill rig system performing the Standard Penetra-
TESTING FOR LEIGH C R E ~ COALFIELD Cavagnsro, R L Proc 3rd Australia-New Zealand Conference on Geomechanlcs, Wellington, 12-16 May 1980, VI, P237-2~2. Publ We/lington: New Zealand Institution of Engineers, i~80
The paper presents the results of some of the field and laboratory testing undertaken in providing geotechnieal mine planning constraints at the Leigh Creek Coalfield, South Australia. The approach adopted to systematically test large amounts of drill core is described. Correlations developed between the basic classification test, the Point Load Strength Index, and other more sophisticated tests used in geotechnical analysis are presented. In particular the difficulties of testing material transitional between strong 'soils' and weak 'hard rocks', the characteristics of rock defects with very low residual strengths, and the simplification of a test used in assessing diggability of bucketwheel excavators are described. Auth.
Core recovery, logging, probing, boring and sampling 825210 C O N T R O I ~
EXTRUEIOIQ OF THIN-WALLED TUBE SAMPLES. TECHNICAL NOTE Eischens, G R Geotech Test J, V4, NI, March 1981, I~1-43
Presents a simple method for calihratirg an extrmder in c~der to control the extruder ram forces. It is suggested that a l~essure gauge and a byPass valve should be incc~parated into the extruder in order to monitor the extrusion force applied to the sample.
Geophysical techniques See slsO: 825056
825211 INVERSE PROBLEM OF THE SHEAR MODULUS AND DENSITY PROFILEs OF A L A ~ EARTH Coen~ S J Geophys Res, V86, NB7, l0 July 1981, P60526056