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Stabilization of potentially liquefiable sand deposits
20A
Blasting See also:
Bolts and anchors 781018
[81189 CONTROL OF V]]~RATION AND NOISE RESULTING FROM SURFACE MINE BLASTING Kerulis, F J Min Congr J, V63, N7, July 1977, P36-39 [81190MET HODS OF REDUCING EJECTION OF ROCK FROM THE FACE IN DRIVING HORIZONTAL WORKINGS Yanovskii, B G Soy Min Sci, V12, N4, July-Aug 1976, P38~-391
Reports experiments on the influence of specific energy, number and depth of boreholes, detonation properties of the explosives, geometrical factors, cut and relief holes. 781191 IKFLU~CE OF JOINTING ON THE EFFICIENCY OF ROCK CRUSHING BY BLASTING Dolgov, K A SOv Min Sci, V12, N4, July-Aug 1976, P454-457 781192 SMOOTH BLASTING Gustafsson, R Paper to Tunnelling '76 conference, London, 1-5 March, 1976, Plhl-146, disc P147 The advantages of the use of smooth blasting techniques are described, and the criteria for the selection of drilling specifications, special explosives and methods of ignition and detonation are given. The correct specification of smooth blasting in tunnelling and underground excavation may be of advantage to both client and contractor. Auth.
Crushing and grinding 781193 EFFECT OF DISPERSING AGENTS ON THE FINE GRINDING OF LIMESTONE Hanna, K M; E1 Gamal, A Powder Teehnol, VI7, NI, May-June 1977, P19-25
Cutting 781194 NSW F~nINGS ON CU~ING FOSCSS ~ D THRUSTS DURING ~ S CUttiNG OF CoAn ANn O~EP m T E P ~ L S (IN GEP~.~) Sann, B Gluckauf Forsehungsh, V38, N2, April 1977, P57-63
Rock and Soil Improvement Techniques
781196 UPLIFT RESISTANCE OF COHESIVE SOILS Davie, J R; Sutherland, H B J Geotech ~ngng Div ASCE, VI03, NGT9, 1977, P935-952 Existing theories for predicting the capacities circular anchors in purely cohesive soils are reviewed and compared with the results of 65 model uplift resistance tests carried out using silty clay and a bentonite and glycerine mixture. Dimensionless and finite element studies of the problem are presented. Existing shallow anchor theories over-estimate the ultimate uplift resistances observed in model tests. 781197 MINING DRIFTS AND TUNNELS: RoLL OF ROCKBOLTING AND PARAMETERS IN ITS SELECTION Dejean, M; RaJ~foux, J F Paper to Tunnelling '76 conference, London, 1-5 March, 1976, P921-327, disc P358-366 The role and use of rock-bolting, both in mining and civil engineering are considered. Details are given of rock-bolting parameters, choice criteria and methods of investigation being outlined. Information is given with regar( to the length, dismleter and type of bolt, type of anchorage and pattern density. Precautions necessary in the installation of rock-bolts are s ~ i z e d .
Grouting 781198 ENGINE~91NG OF GROUT CURTAINS TO STANDARDS Houlsby, A C J Geoteeh Engng Div ASCE, VI03, NGT9, 1977, P953-970 Cement grout curtains for dams can be constructed to certain design standards to achieve approximately the degree of watertightness suitable for the type of dam and its foundation conditions. These varying degrees of curtain permeability are expressed in lugeon units. Techniques for ~hieving these design standards are discussed. 781199 SLABJACKING - STATE-OF-THE-ART J Geotech Engng Div ASCE, VI03, NCT9, 1977, P987-I005 Reviews the art of lifting and levelling portland cement concrete slabs by injection of cement grout between the subgrade and slab. Includes the history and detailed descriptions of current methods, equipment, n~terials, case histories, and a review of current practices used by U.S. State Highway Departments. Presented by the Cormnittee on Grouting of the Geotechnical Engineering Division, ASCE.
Soil stabilisation 781195 DRAINS AID SANDWICH BYPASS CONSTRUCTION Ground [hgng, VIO, N6, Sept 1977, P49-51 Briefly reports the use of drainage to reduce the time for primary settlement in e~bankment construction for the Sandwich bypass in Kent.
781200 STABILIZATION OF POTENTIALLY LIQUEFIABLE SAND DEPOSITS Seed, H B; Booker, J R J Geotech Engng Div ASCE, Vl:)3, NGTT, 1O7Y, P757-768
21A
The installation of a drainage system such as stone coltmms offers an economical method of stabilising an otherwise potentially liquefiable sand deposit. The paper presents a simplified theory that provides a method of evaluating the possible effectiveness of grain drain systems in such cases. Charts suitable for use in design are presented.
and underground chambers, and for slopes, foundations, embankments and dams. Case studies are given. 781205 GmMECHANICS INVESTIGATIONS OF SITES OF TUNNELS IN ROCK ON THE ISLAND OF MONTREAL
(~ FRENCH) Gill, D E; Ballivy, G Can Geotech J, VI3, N4, Nov 1976, P481-497
Soil compaction
Problems related to geoiogythatmight be encountered with full face boring machines are reviewed and investigations which lead to a better geomechanical knowledge of tunnel sites are presented. The diamond drilling programme and the aspects which need t o b e stressed in the reports are discussed. The laboratory testing progranme includes splitting tests, uniaxial and triaxial compression tests, end modified Handewith punching tests. In situ testing progranme comprises Menardpressiopermeameter tests, Goodman jack tests, and borehole punching tests performed with an apparatus developed at Ecole Polytechnique de Montreal. The use by the design engineers of the investigation results of such investigations is discussed and a typical case is presented.
781201 USE OF MODELS IN THE STUDY OF STRESSES DURING SOIL COMPACTION Drskatos, P A Exp Mech, VI6, NI2, Dec 1976, P475-478
Freezing See also:
781093
781202 cALCULATION OF THE STABLE ROOM SPAN WHFa THE ROCK MASS IS SUBJECTED TO ADDITIONAL FREEZING Ushakov, G S; Galkin, A F Soy Min Sci, V12, N~, July-Aug 1976, i>364-367 Discusses how additional freezing of rocks around freshly driven workings greatly increases the roof stability, enabling the size of room to be increased.
Site Investigation and Field Observation 781203 FIELD MEASUREMENTS IN ROCK MECHANICS (IN 2 VOLS) Kovari, K (editor) Rotterdam: A A Balkema, 1977, Vol i I026P, Vol 2, 448P Constitutes the proceedings of the international symposium held in Zurich, 4-6 April 1977, and includes 70 papers under the following main headings: basic considerations for field instrumentation, instrumentation of underground openings, instrumentation of rock slopes and foundations, interpretation of measurements with the aid of computational models. 781204 MONITORING OF STRUCT~/RES IN ROCK. ROCK MECHANICS REVIEW Franklin, J A Int J Rock Mech Min Sci, VI4, Nh, July 1977, P163-192 Reviews the role of instrumentation in rock engineering. Discusses instruments for monitoring rock movements, groundwater pressures, support pressures and loads, end ground vibrations. Considers the precautions needed when planning the monitoring system, the selection and location of instruments, the appropriate choice of hazard warning levels and contingency plans, end precautions during installation reading and reporting of results. The main types of project are considered with regard to their monitoring requirements. Generalized monitoring schemes are suggested for tunnels, shafts
7812o6
OFFSHORE STRUCTURES : SITE INVESTIGATION AND FOUNDATIONS Fox, D A Ground Engng, VI0, N6, Sept 1977, P28-34 Reviews 9 papers presented at a recent conference on the design and construction of offshore structures, 4 specifically dealing with site investigation and surveys, and the testing and design of the foundations for gravity and piled structures, and 5 on offshore project and structural developments which include various matters of interest to foundation engineers.
Core recovery, logging, probing, boring and sampling 781207 NEW METHOD FOR IDENTIFYING SITE FEATURES BETWEEN CORING BOREHOLES Davis, D T; Lytle, R J; Lager, D L Tunnlg Technol Newsl, NI7, March 1977, P7-9 Discusses the use of high frequency electromagnetic wave transmission between bore_holes to locate geological anomalies not intersected by the boreholes themselves, and the use of an algorithm to interpret the field data. 781208 COMPARATIVE TESTS ON SETS OF EQUIPMENT FOR THE LOAD RELIEF METHOD WITH MEASUR~4ENTS OF BOREHoLE WALL DEFORMATION Barkovskii 3 V M] Knoll, P; Kozyrev, A A Soy Min Sci, VI2, N4, July-Aug 1976, P&21-427 Discusses tests of equipment for the overcoring technique. 781209 APPLICATION OF BOREHO[E ACOUSTIC LOGGING TECHNIQUES IN ENGINE~ING GEOLOGY McCann, D M; McCann, C Log Analyst, VI8, N3, May-June 1977, P30-37 Discusses geophysical logging, particularly acoustic logging, including surface-t,9-borehole
Blasting See also:
Bolts and anchors 781018
[81189 CONTROL OF V]]~RATION AND NOISE RESULTING FROM SURFACE MINE BLASTING Kerulis, F J Min Congr J, V63, N7, July 1977, P36-39 [81190MET HODS OF REDUCING EJECTION OF ROCK FROM THE FACE IN DRIVING HORIZONTAL WORKINGS Yanovskii, B G Soy Min Sci, V12, N4, July-Aug 1976, P38~-391
Reports experiments on the influence of specific energy, number and depth of boreholes, detonation properties of the explosives, geometrical factors, cut and relief holes. 781191 IKFLU~CE OF JOINTING ON THE EFFICIENCY OF ROCK CRUSHING BY BLASTING Dolgov, K A SOv Min Sci, V12, N4, July-Aug 1976, P454-457 781192 SMOOTH BLASTING Gustafsson, R Paper to Tunnelling '76 conference, London, 1-5 March, 1976, Plhl-146, disc P147 The advantages of the use of smooth blasting techniques are described, and the criteria for the selection of drilling specifications, special explosives and methods of ignition and detonation are given. The correct specification of smooth blasting in tunnelling and underground excavation may be of advantage to both client and contractor. Auth.
Crushing and grinding 781193 EFFECT OF DISPERSING AGENTS ON THE FINE GRINDING OF LIMESTONE Hanna, K M; E1 Gamal, A Powder Teehnol, VI7, NI, May-June 1977, P19-25
Cutting 781194 NSW F~nINGS ON CU~ING FOSCSS ~ D THRUSTS DURING ~ S CUttiNG OF CoAn ANn O~EP m T E P ~ L S (IN GEP~.~) Sann, B Gluckauf Forsehungsh, V38, N2, April 1977, P57-63
Rock and Soil Improvement Techniques
781196 UPLIFT RESISTANCE OF COHESIVE SOILS Davie, J R; Sutherland, H B J Geotech ~ngng Div ASCE, VI03, NGT9, 1977, P935-952 Existing theories for predicting the capacities circular anchors in purely cohesive soils are reviewed and compared with the results of 65 model uplift resistance tests carried out using silty clay and a bentonite and glycerine mixture. Dimensionless and finite element studies of the problem are presented. Existing shallow anchor theories over-estimate the ultimate uplift resistances observed in model tests. 781197 MINING DRIFTS AND TUNNELS: RoLL OF ROCKBOLTING AND PARAMETERS IN ITS SELECTION Dejean, M; RaJ~foux, J F Paper to Tunnelling '76 conference, London, 1-5 March, 1976, P921-327, disc P358-366 The role and use of rock-bolting, both in mining and civil engineering are considered. Details are given of rock-bolting parameters, choice criteria and methods of investigation being outlined. Information is given with regar( to the length, dismleter and type of bolt, type of anchorage and pattern density. Precautions necessary in the installation of rock-bolts are s ~ i z e d .
Grouting 781198 ENGINE~91NG OF GROUT CURTAINS TO STANDARDS Houlsby, A C J Geoteeh Engng Div ASCE, VI03, NGT9, 1977, P953-970 Cement grout curtains for dams can be constructed to certain design standards to achieve approximately the degree of watertightness suitable for the type of dam and its foundation conditions. These varying degrees of curtain permeability are expressed in lugeon units. Techniques for ~hieving these design standards are discussed. 781199 SLABJACKING - STATE-OF-THE-ART J Geotech Engng Div ASCE, VI03, NCT9, 1977, P987-I005 Reviews the art of lifting and levelling portland cement concrete slabs by injection of cement grout between the subgrade and slab. Includes the history and detailed descriptions of current methods, equipment, n~terials, case histories, and a review of current practices used by U.S. State Highway Departments. Presented by the Cormnittee on Grouting of the Geotechnical Engineering Division, ASCE.
Soil stabilisation 781195 DRAINS AID SANDWICH BYPASS CONSTRUCTION Ground [hgng, VIO, N6, Sept 1977, P49-51 Briefly reports the use of drainage to reduce the time for primary settlement in e~bankment construction for the Sandwich bypass in Kent.
781200 STABILIZATION OF POTENTIALLY LIQUEFIABLE SAND DEPOSITS Seed, H B; Booker, J R J Geotech Engng Div ASCE, Vl:)3, NGTT, 1O7Y, P757-768
21A
The installation of a drainage system such as stone coltmms offers an economical method of stabilising an otherwise potentially liquefiable sand deposit. The paper presents a simplified theory that provides a method of evaluating the possible effectiveness of grain drain systems in such cases. Charts suitable for use in design are presented.
and underground chambers, and for slopes, foundations, embankments and dams. Case studies are given. 781205 GmMECHANICS INVESTIGATIONS OF SITES OF TUNNELS IN ROCK ON THE ISLAND OF MONTREAL
(~ FRENCH) Gill, D E; Ballivy, G Can Geotech J, VI3, N4, Nov 1976, P481-497
Soil compaction
Problems related to geoiogythatmight be encountered with full face boring machines are reviewed and investigations which lead to a better geomechanical knowledge of tunnel sites are presented. The diamond drilling programme and the aspects which need t o b e stressed in the reports are discussed. The laboratory testing progranme includes splitting tests, uniaxial and triaxial compression tests, end modified Handewith punching tests. In situ testing progranme comprises Menardpressiopermeameter tests, Goodman jack tests, and borehole punching tests performed with an apparatus developed at Ecole Polytechnique de Montreal. The use by the design engineers of the investigation results of such investigations is discussed and a typical case is presented.
781201 USE OF MODELS IN THE STUDY OF STRESSES DURING SOIL COMPACTION Drskatos, P A Exp Mech, VI6, NI2, Dec 1976, P475-478
Freezing See also:
781093
781202 cALCULATION OF THE STABLE ROOM SPAN WHFa THE ROCK MASS IS SUBJECTED TO ADDITIONAL FREEZING Ushakov, G S; Galkin, A F Soy Min Sci, V12, N~, July-Aug 1976, i>364-367 Discusses how additional freezing of rocks around freshly driven workings greatly increases the roof stability, enabling the size of room to be increased.
Site Investigation and Field Observation 781203 FIELD MEASUREMENTS IN ROCK MECHANICS (IN 2 VOLS) Kovari, K (editor) Rotterdam: A A Balkema, 1977, Vol i I026P, Vol 2, 448P Constitutes the proceedings of the international symposium held in Zurich, 4-6 April 1977, and includes 70 papers under the following main headings: basic considerations for field instrumentation, instrumentation of underground openings, instrumentation of rock slopes and foundations, interpretation of measurements with the aid of computational models. 781204 MONITORING OF STRUCT~/RES IN ROCK. ROCK MECHANICS REVIEW Franklin, J A Int J Rock Mech Min Sci, VI4, Nh, July 1977, P163-192 Reviews the role of instrumentation in rock engineering. Discusses instruments for monitoring rock movements, groundwater pressures, support pressures and loads, end ground vibrations. Considers the precautions needed when planning the monitoring system, the selection and location of instruments, the appropriate choice of hazard warning levels and contingency plans, end precautions during installation reading and reporting of results. The main types of project are considered with regard to their monitoring requirements. Generalized monitoring schemes are suggested for tunnels, shafts
7812o6
OFFSHORE STRUCTURES : SITE INVESTIGATION AND FOUNDATIONS Fox, D A Ground Engng, VI0, N6, Sept 1977, P28-34 Reviews 9 papers presented at a recent conference on the design and construction of offshore structures, 4 specifically dealing with site investigation and surveys, and the testing and design of the foundations for gravity and piled structures, and 5 on offshore project and structural developments which include various matters of interest to foundation engineers.
Core recovery, logging, probing, boring and sampling 781207 NEW METHOD FOR IDENTIFYING SITE FEATURES BETWEEN CORING BOREHOLES Davis, D T; Lytle, R J; Lager, D L Tunnlg Technol Newsl, NI7, March 1977, P7-9 Discusses the use of high frequency electromagnetic wave transmission between bore_holes to locate geological anomalies not intersected by the boreholes themselves, and the use of an algorithm to interpret the field data. 781208 COMPARATIVE TESTS ON SETS OF EQUIPMENT FOR THE LOAD RELIEF METHOD WITH MEASUR~4ENTS OF BOREHoLE WALL DEFORMATION Barkovskii 3 V M] Knoll, P; Kozyrev, A A Soy Min Sci, VI2, N4, July-Aug 1976, P&21-427 Discusses tests of equipment for the overcoring technique. 781209 APPLICATION OF BOREHO[E ACOUSTIC LOGGING TECHNIQUES IN ENGINE~ING GEOLOGY McCann, D M; McCann, C Log Analyst, VI8, N3, May-June 1977, P30-37 Discusses geophysical logging, particularly acoustic logging, including surface-t,9-borehole