- Email: [email protected]
886216 Comparison between in-situ test results
288A major cause of subsidence. ECPT is shown to be a valuable quality control tool and should be employed during project construction. 886216 Comparison between in-situ test results
load, causing transverse splitting. Method two uses a short rod specimen with a notch cut along the core axis,which is subjected to tensile loading, causing lengthwise splitting. The 2 notch orientations are used to study anisotropy. The apparatus, procedure, calculations, validity and reporting of results for each test are described in detail.
Solymar, Z V; Reed, D J In: Use of In Situ Tests in Geotechnical Engineering (papers to the Conference, Bkwksburg, 23-25 June 1986) PI2361248. Publ New York: ASCE. 1986 (ASCE Publication No 6)
Geotechnical Special
Penetration tests are widely used in site evaluation of bearing capacity, settlement, and liquefaction potential. Empirical formulae developed from one type of test cannot be confidently used to interpret results from another test method. Equipment type, test method, and, above all, soil type influence results. To improve knowledge of correlation between soil mechanical and test parameters obtained from different types of tests, results from five major construction sites are examined. 886217 Use of piezometer cone data Robertson, P K; Campanella, R G; Gillespie, D; Grieg, J In: Use of In Situ Tests in Geotechnical Engineering (papers to the Conference, Blacksburg, 23-25 June 1986) P1263-1280. Pub1 New York: ASCE, 1986 (AXE Publication No 6)
Geotechnical Special
Cone penetration testing with pore pressure measurement is widely used for both onshore and offshore sites. The piezocone is regarded as the best instrument for stratigraphic logging of soft soils, and sensitive elements can delineate layers only a few centimetres thick. Experiences with the piezocone in the Vancouver, Canada, region are described. Soil classification and estimation of plasticity index, undrained shear strength, and overconsolidation ratio are discussed.
Presentation and interpretation of data a86218 Geological-geotechnicnl
data base for micro computers
Candela, L Int Assoc Engng Geol Bull N37, April 1988, P99-106 A geological/geotechnical database, set up to store and retrieve information gathered from site investigation boreholes, and provide a framework for developing automatic cartography using regionalised variables theory, is described. Input to and output from the database, and database structure and utilisation are considered. The system has been set up using data for an area of Barcelona, and an illustrative example is presented.
Monitoring rock and soil mass performance See also: 886324, 886364, 886393
886220 Microseismic
monitoring of solution mining cavities
Guarascio, M Proc APCOM 87, Johannesburg, 19-23 October 1987 VI, P49-54. Pub1 Johannesburg: SAIMM.
1987
The Belvedere Spine110 mine, Italy, is worked by solution mining. Control of cavity evolution is important from both mining economy and environmental viewpoints. Microseismic monitoring is used to detect ground signals associated with rock falls and stress changes around expanding cavities, and to locate these events. Identification of hypocentre location, optimization of the geophone grid, and the data recording and processing system are discussed.
886221 Role of computers in the detection and research of seismic events on the West Wits Line
Riemer, K L Proc APCOM 87, Johannesburg, 19-23 October 1987 VI, MS-80. Pub1 Johannesburg:
SAIMM.
1987
Seismic monitoring is desirable in underground mines for rapid location of events, to enable implementation of remedial measures and, in the longer term, to help identify active geological structures for mine planning purposes and to study in detail the factors leading to these events. The development of the computer system, hardware in use at remote and central sites, data capture, logging and processing, and communications are described. Examples of the application of monitored information to mine planning are presented.
886222 Measurement
Suggested testing methods and standards 886219 Suggested methods for determining the fracture toughness of rock
ISRM Commission on Testing Methods int J Rock Mech Min Sci V25, N2, April 1988, P71-96 Two suggested methods to determine the fracture toughness of rock material in the form of core specimens are described. Method one uses a bend specimen with a notch cut perpendicular to the core axis. The specimen is subjected to compressive 0
of ground movement with inclinometers
Green, G E; Mikkelsen, P E Proc 4th Internationai Geotechnical Setinar, Field Instrumentation and In-situ Measurements, Singapore, 25-27 November 1986 P235-246. Pub1 Singapore: NTI, 1986 Inclinometers are widely used for measurement of displacements, such as those in landslides, slopes and tunnels. The accuracy of the measurement depends on the quality of the casing, probe, cable and readout. These are described in detail. Optimum installation and monitoring techniques are discussed, along with data processing, its error sources and accuracy. Finally, a section on planning and execution of inclinometer monitoring programmes is presented.
1988 Pergamon Press plc. Reproduction
not permitted
load, causing transverse splitting. Method two uses a short rod specimen with a notch cut along the core axis,which is subjected to tensile loading, causing lengthwise splitting. The 2 notch orientations are used to study anisotropy. The apparatus, procedure, calculations, validity and reporting of results for each test are described in detail.
Solymar, Z V; Reed, D J In: Use of In Situ Tests in Geotechnical Engineering (papers to the Conference, Bkwksburg, 23-25 June 1986) PI2361248. Publ New York: ASCE. 1986 (ASCE Publication No 6)
Geotechnical Special
Penetration tests are widely used in site evaluation of bearing capacity, settlement, and liquefaction potential. Empirical formulae developed from one type of test cannot be confidently used to interpret results from another test method. Equipment type, test method, and, above all, soil type influence results. To improve knowledge of correlation between soil mechanical and test parameters obtained from different types of tests, results from five major construction sites are examined. 886217 Use of piezometer cone data Robertson, P K; Campanella, R G; Gillespie, D; Grieg, J In: Use of In Situ Tests in Geotechnical Engineering (papers to the Conference, Blacksburg, 23-25 June 1986) P1263-1280. Pub1 New York: ASCE, 1986 (AXE Publication No 6)
Geotechnical Special
Cone penetration testing with pore pressure measurement is widely used for both onshore and offshore sites. The piezocone is regarded as the best instrument for stratigraphic logging of soft soils, and sensitive elements can delineate layers only a few centimetres thick. Experiences with the piezocone in the Vancouver, Canada, region are described. Soil classification and estimation of plasticity index, undrained shear strength, and overconsolidation ratio are discussed.
Presentation and interpretation of data a86218 Geological-geotechnicnl
data base for micro computers
Candela, L Int Assoc Engng Geol Bull N37, April 1988, P99-106 A geological/geotechnical database, set up to store and retrieve information gathered from site investigation boreholes, and provide a framework for developing automatic cartography using regionalised variables theory, is described. Input to and output from the database, and database structure and utilisation are considered. The system has been set up using data for an area of Barcelona, and an illustrative example is presented.
Monitoring rock and soil mass performance See also: 886324, 886364, 886393
886220 Microseismic
monitoring of solution mining cavities
Guarascio, M Proc APCOM 87, Johannesburg, 19-23 October 1987 VI, P49-54. Pub1 Johannesburg: SAIMM.
1987
The Belvedere Spine110 mine, Italy, is worked by solution mining. Control of cavity evolution is important from both mining economy and environmental viewpoints. Microseismic monitoring is used to detect ground signals associated with rock falls and stress changes around expanding cavities, and to locate these events. Identification of hypocentre location, optimization of the geophone grid, and the data recording and processing system are discussed.
886221 Role of computers in the detection and research of seismic events on the West Wits Line
Riemer, K L Proc APCOM 87, Johannesburg, 19-23 October 1987 VI, MS-80. Pub1 Johannesburg:
SAIMM.
1987
Seismic monitoring is desirable in underground mines for rapid location of events, to enable implementation of remedial measures and, in the longer term, to help identify active geological structures for mine planning purposes and to study in detail the factors leading to these events. The development of the computer system, hardware in use at remote and central sites, data capture, logging and processing, and communications are described. Examples of the application of monitored information to mine planning are presented.
886222 Measurement
Suggested testing methods and standards 886219 Suggested methods for determining the fracture toughness of rock
ISRM Commission on Testing Methods int J Rock Mech Min Sci V25, N2, April 1988, P71-96 Two suggested methods to determine the fracture toughness of rock material in the form of core specimens are described. Method one uses a bend specimen with a notch cut perpendicular to the core axis. The specimen is subjected to compressive 0
of ground movement with inclinometers
Green, G E; Mikkelsen, P E Proc 4th Internationai Geotechnical Setinar, Field Instrumentation and In-situ Measurements, Singapore, 25-27 November 1986 P235-246. Pub1 Singapore: NTI, 1986 Inclinometers are widely used for measurement of displacements, such as those in landslides, slopes and tunnels. The accuracy of the measurement depends on the quality of the casing, probe, cable and readout. These are described in detail. Optimum installation and monitoring techniques are discussed, along with data processing, its error sources and accuracy. Finally, a section on planning and execution of inclinometer monitoring programmes is presented.
1988 Pergamon Press plc. Reproduction
not permitted