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841052 Geotechnical characteristics of King Abdulaziz Military Academy, Saudi Arabia. Technical note
6A for the preliminary stages of planning and design is suggested.
841046 New rock classification systemT~ underground assessment using surface data Gonzalez de Vallejo, L I Proc International Symposium on Engineering Geology and Underground Construction, Lisbon, 1983 V1, P2.85-2.94. Publ Lisbon: SPG, 1983 The Surface Rock Mass Classification (SRC) is based upon the Bieniawski Geomechanic Classification (RMR). New rock quality indexes and modification of some R M R parameters have been introduced, as well as a number of correction factors.
841047 Dynamic properties of four coal measure rocks from the Utah Development Company coal mine, Blackwater, Queensland Nguyen, V V CSIRO Division of Applied Geomechanics report GCM32, 1982, 13P In order to assess the effects of overburden blasting on slope stability, ultrasonic velocity measurements were made on a group of rocks exposed in the highwalls of the Blackwater open cast coal mine, Australia. The results were correlated with sediment cementation for samples of mudstone, ironstone, siltstone and sandstone. Samples were found to be dynamically isotropic when tested for transmission of the primary compression wave, the maximum velocity occurring in bedding in a direction parallel to the strike. Anisotropy was weakest in carbonate sedimented rocks and wet specimens showed a significant decrease in compression wave velocity. Differential moisture content between individual rock layers increased velocity differences, maximizing shear stresses generated through blasting.
Avail: CSIRO Division of Applied Geomechanics, PO Box 54, Mt Waverley, Vic 3149, Australia
Classification and identification 841048 Key for classifying soils to the subgroup level of the Canadian System of Soil Classification Strong, W L; Limbird, A Can J Soil Sci V61. N2, May 1981, P285-294 A dichotomous key is presented as a supplement to the Canadian System of Soil Classification to aid infrequent users in the identification of Canadian soils.
841049 Classification system of fuzzy sets for rock engineering Tao Zhen-Yu; Peng Zu-Zeng Proe International Symposium on Engineering Geology and Underground Construction, Lisbon, 1983 V/, P2.1-2.9. Publ Lisbon: SPG, 1983 A method of fuzzy sets used for the engineering classification of rocks is described.
841050 Classification systems, design of underground structures based on classification systems Dearman, W R Proc International Symposium on Engineering Geology and Underground Construction, Lisbon, 1983 V2, P2.5-2.30. Publ Lisbon." SPG, 1983 A review of the use of rock mass classification systems including their evolution through the Protodyakonow Strength Number, the Terzaghi Rock Load Classification and the Rock Structure
Rating. Current methods for the design of support in tunnels and other underground openings are discussed: the CSIR Geotechnics Classification of Jointed Rock Masses and the NGI Q-system of Tunnel Support Design. 26 refs.
841051 Geomechanics classification (RMR system) in design applications to underground excavations Bieniawski, Z T Proc International Symposium on Engineering Geology and Underground Construction, Lisbon, 1983 ILL P2.33-2.47. Publ Lisbon. SPG. 1983 A review of the Geomechanics Classification - Rock Mass Rating (RMR) System, since its introduction ten years ago. Recent developments considered include use of borehole data for classification purposes, use of the R M R system in mining, estimation of rock mass strength and prediction of convergence deformation in tunnels. 21 refs.
Geology 841052 Geotechnical characteristics of King Abdulaziz Military Academy, Saudi Arabia. Technical note Slater, D E Bull Assoc Engng Geol V20, N3. Aug 1983, P341-345 Geotechnical characteristics were evaluated for the site of the King Abdulaziz Military Academy which is presently under construction. The academy rests on a thin soil layer overlying limestone rock. The soil is primarily silty sands and/or gravel sized rock fragments. Perched groundwater may occur due to irrigation.
841053 Mechanism for generation of short-period transverse motion from explosions Gupta, I N; Blandford, R R Bull Seismoi Soc Am V73. N2, April 1983, P571-591 From the analysis of extensive short-period three-component data from both explosions and earthquakes at various sourcereceiver distances, a comparison is made of the spatial attenuation and frequency content of the transverse component with those of the other two orthogonal components. It is suggested that the generation and propagation of short-period transverse motion from explosions are primarily due to scattering by heterogeneities encountered during the transfer of seismic energy from the source region to the recording site.
841054 Impact of proposed lignite mining in West Tennessee Stearns, R G; Wilson, J M; Reesman, A L US Bureau of Mines report 0FR200-82, Oct 1981, 217P The report presents information on geology, land use, soils, groundwater and stability compiled for an area in Tennessee, USA, underlain at 250ft by extensive lignite deposits. Analyses were made of lignite, overburden, associated water and leachate at a test site in Lauderdale County, and test data for one year are presented. The main potential environmental problems are the quality of surface water and shallow groundwater, the main aquifer of the region being unlikely to be affected by mining. Soil reclamation and conservation should be readily accomplished. Dangerous earthquakes have a low probability and mines are not significantly more hazardous than steep bluffs.
841046 New rock classification systemT~ underground assessment using surface data Gonzalez de Vallejo, L I Proc International Symposium on Engineering Geology and Underground Construction, Lisbon, 1983 V1, P2.85-2.94. Publ Lisbon: SPG, 1983 The Surface Rock Mass Classification (SRC) is based upon the Bieniawski Geomechanic Classification (RMR). New rock quality indexes and modification of some R M R parameters have been introduced, as well as a number of correction factors.
841047 Dynamic properties of four coal measure rocks from the Utah Development Company coal mine, Blackwater, Queensland Nguyen, V V CSIRO Division of Applied Geomechanics report GCM32, 1982, 13P In order to assess the effects of overburden blasting on slope stability, ultrasonic velocity measurements were made on a group of rocks exposed in the highwalls of the Blackwater open cast coal mine, Australia. The results were correlated with sediment cementation for samples of mudstone, ironstone, siltstone and sandstone. Samples were found to be dynamically isotropic when tested for transmission of the primary compression wave, the maximum velocity occurring in bedding in a direction parallel to the strike. Anisotropy was weakest in carbonate sedimented rocks and wet specimens showed a significant decrease in compression wave velocity. Differential moisture content between individual rock layers increased velocity differences, maximizing shear stresses generated through blasting.
Avail: CSIRO Division of Applied Geomechanics, PO Box 54, Mt Waverley, Vic 3149, Australia
Classification and identification 841048 Key for classifying soils to the subgroup level of the Canadian System of Soil Classification Strong, W L; Limbird, A Can J Soil Sci V61. N2, May 1981, P285-294 A dichotomous key is presented as a supplement to the Canadian System of Soil Classification to aid infrequent users in the identification of Canadian soils.
841049 Classification system of fuzzy sets for rock engineering Tao Zhen-Yu; Peng Zu-Zeng Proe International Symposium on Engineering Geology and Underground Construction, Lisbon, 1983 V/, P2.1-2.9. Publ Lisbon: SPG, 1983 A method of fuzzy sets used for the engineering classification of rocks is described.
841050 Classification systems, design of underground structures based on classification systems Dearman, W R Proc International Symposium on Engineering Geology and Underground Construction, Lisbon, 1983 V2, P2.5-2.30. Publ Lisbon." SPG, 1983 A review of the use of rock mass classification systems including their evolution through the Protodyakonow Strength Number, the Terzaghi Rock Load Classification and the Rock Structure
Rating. Current methods for the design of support in tunnels and other underground openings are discussed: the CSIR Geotechnics Classification of Jointed Rock Masses and the NGI Q-system of Tunnel Support Design. 26 refs.
841051 Geomechanics classification (RMR system) in design applications to underground excavations Bieniawski, Z T Proc International Symposium on Engineering Geology and Underground Construction, Lisbon, 1983 ILL P2.33-2.47. Publ Lisbon. SPG. 1983 A review of the Geomechanics Classification - Rock Mass Rating (RMR) System, since its introduction ten years ago. Recent developments considered include use of borehole data for classification purposes, use of the R M R system in mining, estimation of rock mass strength and prediction of convergence deformation in tunnels. 21 refs.
Geology 841052 Geotechnical characteristics of King Abdulaziz Military Academy, Saudi Arabia. Technical note Slater, D E Bull Assoc Engng Geol V20, N3. Aug 1983, P341-345 Geotechnical characteristics were evaluated for the site of the King Abdulaziz Military Academy which is presently under construction. The academy rests on a thin soil layer overlying limestone rock. The soil is primarily silty sands and/or gravel sized rock fragments. Perched groundwater may occur due to irrigation.
841053 Mechanism for generation of short-period transverse motion from explosions Gupta, I N; Blandford, R R Bull Seismoi Soc Am V73. N2, April 1983, P571-591 From the analysis of extensive short-period three-component data from both explosions and earthquakes at various sourcereceiver distances, a comparison is made of the spatial attenuation and frequency content of the transverse component with those of the other two orthogonal components. It is suggested that the generation and propagation of short-period transverse motion from explosions are primarily due to scattering by heterogeneities encountered during the transfer of seismic energy from the source region to the recording site.
841054 Impact of proposed lignite mining in West Tennessee Stearns, R G; Wilson, J M; Reesman, A L US Bureau of Mines report 0FR200-82, Oct 1981, 217P The report presents information on geology, land use, soils, groundwater and stability compiled for an area in Tennessee, USA, underlain at 250ft by extensive lignite deposits. Analyses were made of lignite, overburden, associated water and leachate at a test site in Lauderdale County, and test data for one year are presented. The main potential environmental problems are the quality of surface water and shallow groundwater, the main aquifer of the region being unlikely to be affected by mining. Soil reclamation and conservation should be readily accomplished. Dangerous earthquakes have a low probability and mines are not significantly more hazardous than steep bluffs.