- Email: [email protected]
Stress-displacement behaviour of the fractured rock around a deep tabular stope of limited span
275A 895373 Gcotechaical aspects affecting tim design and construction of underground structures for Chukha hydroelectric project Char, S A; Menon, K K; Sood, P K Proc Symposium on Rock Mechanics and Power Plants, Madrid, 12-16 September 1988 VI, P299-308. Publ Rotterdam: A A Balkema, 1988
Stresses around underground openings 7
Construction of a power plant in the geologically young, tectonic rocks of the Himalayas is described. Most of the site is fairly competent gneissic rock, but shear zones and major discontinuities are present. Rockfalls, landslides, and major water inflows led to problems. Remedial measures and support used and recommendations for future projects under similar conditions are presented. 895374 Geo-technical aspects of 800MW Kol Dam project in lower Himalayas, India Goyal, D P; Bharadvaj, H C Proc Symposium on Rock Mechanics and Power Plants, Madrid, 12-16 September 1988 VI. P309-316. Publ Rotterdam: A A Balkema, 1988
The 163m high fill dam and power plant are sited in a high risk seismic area. The stratigraphic sequence contains cemented river terrace gravels, basic intrusions, dolomite and limestone, shales, and quartzite. Significant faults are evident in the reservoir area. Details are given of examination of possible leakage from the reservoir, alignment of the dam to maximise stability, dam foundation and abutment grouting, design of the spillway, and design and support of the underground structures. 895375 Influence of faulting on rock excavation Hansen, L; Martna, J Proc Symposium on Rock Mechanics and Power Plants, Madrid, 12-16 September 1988 VI, P317-324. Publ Rotterdam: A A Balkema. 1988 Faults constitute zones of weakness with minimal tensile strength and can influence the process and results of rock excavation. The rock matrix properties, material in the fault zone, and orientation of the fault plane with respect to structure and in situ stress can influence detrimental effects, if any. The classification of faults and fault zone material is considered and photographic and schematic illustration of their effects is presented. 895376 Some specific notions about designing and constructing hydrotechnical underground structures in flysch Hudec, M; Frgic, L; Grabasnjak, M; Jasarevic, I; Plamenac, M; Stojkovic, B; Marence. M: Simic, R Proc Symposium on Rock Mechanics and Power Plants, Madrid, 12-16 September 1988 VI, P325-334. Publ Rotterdam: A A Balkema. 1988
Mineralogical and mechanical properties for some flysch rocks in Yugoslavia, Algeria, and Iraq are tabulated, and case histories of tunnelling in these rocks, problems and solutions, are described. The need for accurate rock classification for tunnelling progress and support design, and soil mechanics techniques to quantify swelling and slaking are emphasised. The sudden changes in rock properties which are encountered in flysch rocks, and the need for detailed site exploration and design flexibility to account for this, are discussed.
895377 Effects of anchorage and modulus in geotextile-reinforced unpaved roads. Technical note Bordeau, P L; Chapuis, J; Holtz, R D Geotext Geomem V7, N3, 1988, P221-230 A critical examination of large scale model tests on a geotextile reinforced unpaved road on peat is presented. Soil geotextile interaction is strongly nonlinear and full anchorage of the geotextile is not a necessary condition of the reinforcing mechanism. 895378 Behaviour of a former quarry at the time of its loading by a fill embankment (In French) Rochet, L; Thorin, R lndustrie Minerale V71. Feb 1989, P24-28
The behaviour of an abandoned room and pillar mine during the construction of a 12m high fill on the overlying surface is described. The mine in limestone was instrumented, and stress levels and distributions, and deformation and convergence monitored. Acoustic wave velocity measurements, acoustic emission, and electrical surveys were also carried out. The data acquired were used to calculate stability. Results may be applied to other similar situations. 895379 Numerical and laboratory investigation into the behaviour of a dry underclay beam Afrouz, A; Hassani, F P lnt J Nam Anal Moth Geomech V13. N2. March-April 1989, PI15-130 Mine floors under dry conditions are loaded vertically downwards through the support, from the sides and from the bottom. For weak unclay material at depth, the bottom load can be considered uniform and tending to produce uplift. A simple laboratory device has been developed to simulate the behaviour of a dry clay mine roadway floor. Results are compared to predictions from classical beam theory and the Airy stress function method. The latter analysis provides a better model of the behaviour of a dry underclay beam. 895380 Elastic buckling of buried flexible tubes - a review of theory and experiment Moore, I D J Geotech Engng Div ASCE V115, N3. March 1989, P340358
Theoretical models for buried tube buckling are reviewed. Linear multiwave theories in an elastic continuum are shown to be the most suitable by examination of experimental data. Factors affecting the critical hoop force are discussed. An examination of both theory and experiment confirms that maximum rather than average hoop thrust should be used to characterise the loads in the buried structure. Some scalar correction factors are recommended for use of the preferred theory in design of buried flexible pipes. 895381 Stress-displacement behaviour of the fractured rock around a deep tabular stope of limited span Kirsten, H A D, Stacey, T R J S Aft lust Min Metall V89, N2. Feb 1989, P47-58
The behaviour of a rock mass around a stope is dependent on the nature and strength of the rock mass and its discontinuities, and the strength of the support. The stress regimes
1989 Pergamon Press plc. Reproduction not permitted
Stresses around underground openings 7
Construction of a power plant in the geologically young, tectonic rocks of the Himalayas is described. Most of the site is fairly competent gneissic rock, but shear zones and major discontinuities are present. Rockfalls, landslides, and major water inflows led to problems. Remedial measures and support used and recommendations for future projects under similar conditions are presented. 895374 Geo-technical aspects of 800MW Kol Dam project in lower Himalayas, India Goyal, D P; Bharadvaj, H C Proc Symposium on Rock Mechanics and Power Plants, Madrid, 12-16 September 1988 VI. P309-316. Publ Rotterdam: A A Balkema, 1988
The 163m high fill dam and power plant are sited in a high risk seismic area. The stratigraphic sequence contains cemented river terrace gravels, basic intrusions, dolomite and limestone, shales, and quartzite. Significant faults are evident in the reservoir area. Details are given of examination of possible leakage from the reservoir, alignment of the dam to maximise stability, dam foundation and abutment grouting, design of the spillway, and design and support of the underground structures. 895375 Influence of faulting on rock excavation Hansen, L; Martna, J Proc Symposium on Rock Mechanics and Power Plants, Madrid, 12-16 September 1988 VI, P317-324. Publ Rotterdam: A A Balkema. 1988 Faults constitute zones of weakness with minimal tensile strength and can influence the process and results of rock excavation. The rock matrix properties, material in the fault zone, and orientation of the fault plane with respect to structure and in situ stress can influence detrimental effects, if any. The classification of faults and fault zone material is considered and photographic and schematic illustration of their effects is presented. 895376 Some specific notions about designing and constructing hydrotechnical underground structures in flysch Hudec, M; Frgic, L; Grabasnjak, M; Jasarevic, I; Plamenac, M; Stojkovic, B; Marence. M: Simic, R Proc Symposium on Rock Mechanics and Power Plants, Madrid, 12-16 September 1988 VI, P325-334. Publ Rotterdam: A A Balkema. 1988
Mineralogical and mechanical properties for some flysch rocks in Yugoslavia, Algeria, and Iraq are tabulated, and case histories of tunnelling in these rocks, problems and solutions, are described. The need for accurate rock classification for tunnelling progress and support design, and soil mechanics techniques to quantify swelling and slaking are emphasised. The sudden changes in rock properties which are encountered in flysch rocks, and the need for detailed site exploration and design flexibility to account for this, are discussed.
895377 Effects of anchorage and modulus in geotextile-reinforced unpaved roads. Technical note Bordeau, P L; Chapuis, J; Holtz, R D Geotext Geomem V7, N3, 1988, P221-230 A critical examination of large scale model tests on a geotextile reinforced unpaved road on peat is presented. Soil geotextile interaction is strongly nonlinear and full anchorage of the geotextile is not a necessary condition of the reinforcing mechanism. 895378 Behaviour of a former quarry at the time of its loading by a fill embankment (In French) Rochet, L; Thorin, R lndustrie Minerale V71. Feb 1989, P24-28
The behaviour of an abandoned room and pillar mine during the construction of a 12m high fill on the overlying surface is described. The mine in limestone was instrumented, and stress levels and distributions, and deformation and convergence monitored. Acoustic wave velocity measurements, acoustic emission, and electrical surveys were also carried out. The data acquired were used to calculate stability. Results may be applied to other similar situations. 895379 Numerical and laboratory investigation into the behaviour of a dry underclay beam Afrouz, A; Hassani, F P lnt J Nam Anal Moth Geomech V13. N2. March-April 1989, PI15-130 Mine floors under dry conditions are loaded vertically downwards through the support, from the sides and from the bottom. For weak unclay material at depth, the bottom load can be considered uniform and tending to produce uplift. A simple laboratory device has been developed to simulate the behaviour of a dry clay mine roadway floor. Results are compared to predictions from classical beam theory and the Airy stress function method. The latter analysis provides a better model of the behaviour of a dry underclay beam. 895380 Elastic buckling of buried flexible tubes - a review of theory and experiment Moore, I D J Geotech Engng Div ASCE V115, N3. March 1989, P340358
Theoretical models for buried tube buckling are reviewed. Linear multiwave theories in an elastic continuum are shown to be the most suitable by examination of experimental data. Factors affecting the critical hoop force are discussed. An examination of both theory and experiment confirms that maximum rather than average hoop thrust should be used to characterise the loads in the buried structure. Some scalar correction factors are recommended for use of the preferred theory in design of buried flexible pipes. 895381 Stress-displacement behaviour of the fractured rock around a deep tabular stope of limited span Kirsten, H A D, Stacey, T R J S Aft lust Min Metall V89, N2. Feb 1989, P47-58
The behaviour of a rock mass around a stope is dependent on the nature and strength of the rock mass and its discontinuities, and the strength of the support. The stress regimes
1989 Pergamon Press plc. Reproduction not permitted