- Email: [email protected]
In situ horizontal stress from pressuremeter tests
160A 844352 ROCKDISC - A microcomputer-based core logging system. Technical note Nordqvist, A Int J Rock Mech Min Sci 1/21, N2, April 1984, P109-112
A new computerized system for core logging is described. The ROCKDISC code is written in CBASIC, uses the CP/M operating system and is stored on floppy discs. By executing PLOT-ROCKDISC written in PASCAL, a graphical presentation of borehole data is obtained. Logged information can be displayed by listing on paper or by using computer graphics. The ROCKDISC system has been tested and evaluated on 10,000m of drill-core in the geomechanical investigation work carried out at the Luossavaara Research Mine, Moren, Sweden, and was found to be reliable. 844353 Dilatometer tests in two soft marine clays Lacasse, S; Lunne, T Norw Geotech inst Publ N146, 1983, 8P
Dilatometer profiling at 20crn intervals was carried out in 2 soft Norwegian clay deposits: in Onsoy clay and Drammen clay. Both deposits had previously been thoroughly investigated by laboratory and field tests. In both clays the dilatometer recorded adequately the soil variability with depth. For the Onsoy clay, derived values of earth pressure at rest, overconsolidation ratio and constrained modulus agreed approximately with the previous test results. The dilatometer tests on the Drammen clay were less satisfactory.
Geophysical techniques 844354 Practical geophysics for the exploration geologist Van Blaricom, R Spokane: Northwest Mining Association, 1980, 303P
A manual describing geophysical techniques for use in exploration: radiometrics, electrical methods, gravity methods, seismic methods, geomagnetics, and electromagnetic methods. 844355 Underground sound. Application of seismic waves (Methods in geochemistry and geophysics 18) White, J E Amsterdam: Elsevier, ]983, 253P
A textbook on the generation, propagation and detection of seismic waves travelling through the earth. 844356 Proposed standard test methods for cross-hole seismic testing Ballard, g F; Stokoe, K H; McLemore, g Geotech Test J I/6, N4, Dec 1983, P210-219
The determination of travelling P and S waves at test sites consisting primarily of soils is considered. Two methods are described: (1) for use on critical projects from which high quality data must be obtained and (2) for less precise measurement. Data acquisition equipment is discussed and various interpretation procedures and applications considered.
Presentation and interpretation of data See also: 844352 844357 Computer applications in strata mechanics Neve, P, Isaac, A K Min Sci Teclmol VI, 172, Jan 1984, P137-147
Summarizes the way in which computers are being applied by the Strata Mechanics Research Group, University College, Cardiff, Wales. 844358 In situ horizontal stress from pressuremeter tests Lacasse, S; Lunne, T Norw Geotech lnst Pubi N146, 1983, lOP
Presents the interpretation of the in situ horizontal stress from 21 self-boring pressuremeter tests in 2 Norwegian marine clay deposits. Eight different methods of data interpretation of varying levels of complexity were compared. Five of the approaches gave satisfactory estimates (within 10%) of horizontal stress: the initial excess pressure method; the modified lift-off pressure method; the graphical iterative method; and the hyperbolic approaches of Denby and Arnold. 844359 Application of an integrated instrumentation system for coalmine rock mechm~cs investigations Isaac, A K; Smart, B G D; Price, M A; Thornton, J D In: Strata Mechanics(paper to the Symposimn on Strata Mechanics, Newcastle upon Tyne, 5-7 April 1982) P36-42. Publ Amsterdam: Elsevier, 1982
A new integrated instrumentation system was tested at the Betws Colliery, Wales, UK. The system employed: a range of transducer devices for measurement of pressure, linear and angular displacement; a twelve-channel, portable data logger; and a translation unit to transfer information from the data logger cassettes to floppies in a minicomputer. 84436O SweSap. SveDeFo's new signal analysis programme (in Swedish) Almgren, B Swedish Detonic Research Foundation report DS 1983:4, 31 Oct 1983, 54P
A waveform recorder and desktop computer are used for the measurement and analysis of transient signals during field work. A large signal analysis program has been developed which will handle fast (20MHz) and long slow (13 rain) signals, perform integrations, differentiations, Fourier transformations and risetime calculations. Avail: The Foundation, Box 32058, S-126 11 Stockholm, Sweden
Subjects Pe pheral to Geomechanics See: 844305
Petroleum engineering See also: 844019, 844020, 844063, 844257, 844258, 844259 844361 Measurement of relative pm,meal~ty for computer modeHng/r--~-~xvoirahonintion Hagoort, J Oil Gas J V82, N8, 20 Feb 1984, P62-68
A new computerized system for core logging is described. The ROCKDISC code is written in CBASIC, uses the CP/M operating system and is stored on floppy discs. By executing PLOT-ROCKDISC written in PASCAL, a graphical presentation of borehole data is obtained. Logged information can be displayed by listing on paper or by using computer graphics. The ROCKDISC system has been tested and evaluated on 10,000m of drill-core in the geomechanical investigation work carried out at the Luossavaara Research Mine, Moren, Sweden, and was found to be reliable. 844353 Dilatometer tests in two soft marine clays Lacasse, S; Lunne, T Norw Geotech inst Publ N146, 1983, 8P
Dilatometer profiling at 20crn intervals was carried out in 2 soft Norwegian clay deposits: in Onsoy clay and Drammen clay. Both deposits had previously been thoroughly investigated by laboratory and field tests. In both clays the dilatometer recorded adequately the soil variability with depth. For the Onsoy clay, derived values of earth pressure at rest, overconsolidation ratio and constrained modulus agreed approximately with the previous test results. The dilatometer tests on the Drammen clay were less satisfactory.
Geophysical techniques 844354 Practical geophysics for the exploration geologist Van Blaricom, R Spokane: Northwest Mining Association, 1980, 303P
A manual describing geophysical techniques for use in exploration: radiometrics, electrical methods, gravity methods, seismic methods, geomagnetics, and electromagnetic methods. 844355 Underground sound. Application of seismic waves (Methods in geochemistry and geophysics 18) White, J E Amsterdam: Elsevier, ]983, 253P
A textbook on the generation, propagation and detection of seismic waves travelling through the earth. 844356 Proposed standard test methods for cross-hole seismic testing Ballard, g F; Stokoe, K H; McLemore, g Geotech Test J I/6, N4, Dec 1983, P210-219
The determination of travelling P and S waves at test sites consisting primarily of soils is considered. Two methods are described: (1) for use on critical projects from which high quality data must be obtained and (2) for less precise measurement. Data acquisition equipment is discussed and various interpretation procedures and applications considered.
Presentation and interpretation of data See also: 844352 844357 Computer applications in strata mechanics Neve, P, Isaac, A K Min Sci Teclmol VI, 172, Jan 1984, P137-147
Summarizes the way in which computers are being applied by the Strata Mechanics Research Group, University College, Cardiff, Wales. 844358 In situ horizontal stress from pressuremeter tests Lacasse, S; Lunne, T Norw Geotech lnst Pubi N146, 1983, lOP
Presents the interpretation of the in situ horizontal stress from 21 self-boring pressuremeter tests in 2 Norwegian marine clay deposits. Eight different methods of data interpretation of varying levels of complexity were compared. Five of the approaches gave satisfactory estimates (within 10%) of horizontal stress: the initial excess pressure method; the modified lift-off pressure method; the graphical iterative method; and the hyperbolic approaches of Denby and Arnold. 844359 Application of an integrated instrumentation system for coalmine rock mechm~cs investigations Isaac, A K; Smart, B G D; Price, M A; Thornton, J D In: Strata Mechanics(paper to the Symposimn on Strata Mechanics, Newcastle upon Tyne, 5-7 April 1982) P36-42. Publ Amsterdam: Elsevier, 1982
A new integrated instrumentation system was tested at the Betws Colliery, Wales, UK. The system employed: a range of transducer devices for measurement of pressure, linear and angular displacement; a twelve-channel, portable data logger; and a translation unit to transfer information from the data logger cassettes to floppies in a minicomputer. 84436O SweSap. SveDeFo's new signal analysis programme (in Swedish) Almgren, B Swedish Detonic Research Foundation report DS 1983:4, 31 Oct 1983, 54P
A waveform recorder and desktop computer are used for the measurement and analysis of transient signals during field work. A large signal analysis program has been developed which will handle fast (20MHz) and long slow (13 rain) signals, perform integrations, differentiations, Fourier transformations and risetime calculations. Avail: The Foundation, Box 32058, S-126 11 Stockholm, Sweden
Subjects Pe pheral to Geomechanics See: 844305
Petroleum engineering See also: 844019, 844020, 844063, 844257, 844258, 844259 844361 Measurement of relative pm,meal~ty for computer modeHng/r--~-~xvoirahonintion Hagoort, J Oil Gas J V82, N8, 20 Feb 1984, P62-68