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Rock preconditioning as a seismic control measure in mines
181A 856100 Design considerations for an underground seismic network Green, R W E
Proc Ist International Congress on Rockbursts and Seismicity in Mines. Johannesburg, Sept 1982 P67-73. Publ Johannesburg: SA1MM. 1984 The advantages and disadvantages of using the geophone and the piezometric accelerometer for monitoring seismic activity are contrasted and compared. Analogue and digital techniques, and their costs, are examined for data transmission both underground and on the surface. 856101 Design considerations for an underground seismic network Green, R W E
Proc 1st International Congress on Rockbursts and Seismicity in Mines, Johannesburg, Sept 1982 P67-73. Publ Johannesburg: SA1MM. 1984
856105 Constant head well permeameter: effect of unsaturated flow Reynolds, W D: Elrick, D E; Clothier, B E
Soil Sci V139, N2, Feb 1985. P172-180 The theory of the constant head well permeameter has been developed to account for the effects of unsaturated flow, allowing greater accuracy for determination of field-saturated hydraulic conductivity above the water table. Power plants 856106 Chemical grouting - 2 Littlejohn, G S
Ground Engng V18, N3, April 1985, P23-28
The advantages and disadvantages of using the geophone and the piezometric accelerometer for monitoring seismic activity are contrasted and compared. Analogue and digital techniques, and their costs, are examined for data transmission both underground and on the surface.
The second part of a three-part paper. The subject of grout systems is presented, examining the selection of the grout, its viscosity, setting time and stability. The strength and creep of grouted formations are briefly discussed, as are the resistance of grout to extrusion, permeability of grouted formations and the permanence of a grout treatment. Health and safety aspects are noted.
856102 Design considerations for an underground seismic network Green, R W E
856107 Chemical grouting - 2 Littlejohn, G S
Proc 1st International Congress on Rockbursts and Seismicity in Mines, Johannesburg, Sept 1982 P67-73. Publ Johannesburg. SAIMM, 1984
Ground Engng V18, N3, April 1985, P23-28
The advantages and disadvantages of using the geophone and the piezometric accelerometer for monitoring seismic activity are contrasted and compared. Analogue and digital techniques, and their costs, are examined for data transmission both underground and on the surface.
The second part of a three-part paper. The subject of grout systems is presented, examining the selection of the grout, its viscosity, setting time and stability. The strength and creep of grouted formations are briefly discussed, as are the resistance of grout to extrusion, permeability of grouted formations and the permanence of a grout treatment. Health and safety aspects are noted.
856103 Design considerations for an underground seismic network Green. R W E
856108 Rock preconditioning as a seismic control measure in mines Blake. W
Proc 1st International Congress on Rockbursts and Seismicity in Mines, Johannesburg, Sept 1982 P67-73. Publ Johannesburg. SAIMM, 1984
Proc 1st International Congress on Rockbursts and Seismieity in Mines, Johannesburg, Sept 1982 P225-229. Puhl Johannesburg." SAIMM, 1984
The advantages and disadvantages of using the geophone and the piezometric accelerometer for monitoring seismic activity are contrasted and compared. Analogue and digital techniques, and their costs, are examined for data transmission both underground and on the surface.
Rock burst has been eliminated and the release of seismic energy greatly reduced in the Star Mine, Idaho, USA, by large-scale rock preconditioning. Prefracturing a stope or zone of solid rock prior to mining allows the high stresses resulting from mining to be relieved by yielding of the preconditioned zone. A preconditioning program for multistope, multilevel mining is described.
856104 Mechanism of large mining tremors in Poland Gibowicz, S J
Proc Ist International Congress on Rockbursts and Seismicity in Mines, Johannesburg, Sept 1982 P17-28. Publ Johannesburg." SAIMM, 1984 Four large mining tremors in Poland have been studied. The seismic spectra have been analysed in order to determine the source parameters. Values of apparent stress were calculated and, although mining did not produce stress changes required for the development of a seismic source, it was postulated that mining stresses may trigger the release of pre-existing tectonic stress. Fault plane solutions suggest different faulting in different areas and provide support for the importance of tectonic stress components. These observations may be useful in developing methods to predict mining induced seismic events.
856109 Influence of geology on the mechanisms of mining-associated seismicity in the Kierksdorp gold-field Potgieter, G J; Roering, C
Proc 1st International Congress on Rockbursts and Seismieity in Mines, Johannesburg, Sept 1982 P45-50. Publ Johannesburg." SAIMM, 1984 Eleven seismic events from the Klerksdorp goldfield have been investigated and spatially related to geological structure. Analyses of first motions of these events all give fault plane solutions in which one of the derived planes is parallel to a known geological structure. This implies that mining activity leads to slip on pre-existing geological structures. Maximum principal stress orientation variations can be associated with faults induced by mining, dykes and pre-existing faults.
Proc Ist International Congress on Rockbursts and Seismicity in Mines. Johannesburg, Sept 1982 P67-73. Publ Johannesburg: SA1MM. 1984 The advantages and disadvantages of using the geophone and the piezometric accelerometer for monitoring seismic activity are contrasted and compared. Analogue and digital techniques, and their costs, are examined for data transmission both underground and on the surface. 856101 Design considerations for an underground seismic network Green, R W E
Proc 1st International Congress on Rockbursts and Seismicity in Mines, Johannesburg, Sept 1982 P67-73. Publ Johannesburg: SA1MM. 1984
856105 Constant head well permeameter: effect of unsaturated flow Reynolds, W D: Elrick, D E; Clothier, B E
Soil Sci V139, N2, Feb 1985. P172-180 The theory of the constant head well permeameter has been developed to account for the effects of unsaturated flow, allowing greater accuracy for determination of field-saturated hydraulic conductivity above the water table. Power plants 856106 Chemical grouting - 2 Littlejohn, G S
Ground Engng V18, N3, April 1985, P23-28
The advantages and disadvantages of using the geophone and the piezometric accelerometer for monitoring seismic activity are contrasted and compared. Analogue and digital techniques, and their costs, are examined for data transmission both underground and on the surface.
The second part of a three-part paper. The subject of grout systems is presented, examining the selection of the grout, its viscosity, setting time and stability. The strength and creep of grouted formations are briefly discussed, as are the resistance of grout to extrusion, permeability of grouted formations and the permanence of a grout treatment. Health and safety aspects are noted.
856102 Design considerations for an underground seismic network Green, R W E
856107 Chemical grouting - 2 Littlejohn, G S
Proc 1st International Congress on Rockbursts and Seismicity in Mines, Johannesburg, Sept 1982 P67-73. Publ Johannesburg. SAIMM, 1984
Ground Engng V18, N3, April 1985, P23-28
The advantages and disadvantages of using the geophone and the piezometric accelerometer for monitoring seismic activity are contrasted and compared. Analogue and digital techniques, and their costs, are examined for data transmission both underground and on the surface.
The second part of a three-part paper. The subject of grout systems is presented, examining the selection of the grout, its viscosity, setting time and stability. The strength and creep of grouted formations are briefly discussed, as are the resistance of grout to extrusion, permeability of grouted formations and the permanence of a grout treatment. Health and safety aspects are noted.
856103 Design considerations for an underground seismic network Green. R W E
856108 Rock preconditioning as a seismic control measure in mines Blake. W
Proc 1st International Congress on Rockbursts and Seismicity in Mines, Johannesburg, Sept 1982 P67-73. Publ Johannesburg. SAIMM, 1984
Proc 1st International Congress on Rockbursts and Seismieity in Mines, Johannesburg, Sept 1982 P225-229. Puhl Johannesburg." SAIMM, 1984
The advantages and disadvantages of using the geophone and the piezometric accelerometer for monitoring seismic activity are contrasted and compared. Analogue and digital techniques, and their costs, are examined for data transmission both underground and on the surface.
Rock burst has been eliminated and the release of seismic energy greatly reduced in the Star Mine, Idaho, USA, by large-scale rock preconditioning. Prefracturing a stope or zone of solid rock prior to mining allows the high stresses resulting from mining to be relieved by yielding of the preconditioned zone. A preconditioning program for multistope, multilevel mining is described.
856104 Mechanism of large mining tremors in Poland Gibowicz, S J
Proc Ist International Congress on Rockbursts and Seismicity in Mines, Johannesburg, Sept 1982 P17-28. Publ Johannesburg." SAIMM, 1984 Four large mining tremors in Poland have been studied. The seismic spectra have been analysed in order to determine the source parameters. Values of apparent stress were calculated and, although mining did not produce stress changes required for the development of a seismic source, it was postulated that mining stresses may trigger the release of pre-existing tectonic stress. Fault plane solutions suggest different faulting in different areas and provide support for the importance of tectonic stress components. These observations may be useful in developing methods to predict mining induced seismic events.
856109 Influence of geology on the mechanisms of mining-associated seismicity in the Kierksdorp gold-field Potgieter, G J; Roering, C
Proc 1st International Congress on Rockbursts and Seismieity in Mines, Johannesburg, Sept 1982 P45-50. Publ Johannesburg." SAIMM, 1984 Eleven seismic events from the Klerksdorp goldfield have been investigated and spatially related to geological structure. Analyses of first motions of these events all give fault plane solutions in which one of the derived planes is parallel to a known geological structure. This implies that mining activity leads to slip on pre-existing geological structures. Maximum principal stress orientation variations can be associated with faults induced by mining, dykes and pre-existing faults.