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Rock slope performance as revealed by a physical joint model. Congress. Preprint
173A
tic zone amd the bottc~ elastic zone are t r a n s f c ~ to non-dimemsiomal form ar~ solutions are obtained. A rA~nericel problem is worked out to illustrate the use of the plots to obtain the top deflection amd the msx~w, mc~en~ of the pile.
168~ MILOVIC,DM KOSOVO PROJ. ~ R A D E , YU TOURNI~, JP HYDRO- QUEBEC, M O N I ~ , CDN S~resses amd displacements due to rigid resta~gular foumdation on a layer of finite thickness.6F,16T,8R. SOILS AND FOUNDATIONS,VI3,N~,DEC.1973,P29-~3. Expressions are given for the calculation of stresses and displacmnents beneath the rigid rectangular foumdation resting on an elastic isohropic layer of finite thlck~ess, ~zlerlain by a rigid base, assuming th~ contact between the compressible laye~ and the rigid base to be p~rfset~y rot~. Stresses ani d i s p l a ~ n t s for five different thicknesses of compressible layer, three different ratios of dz~mensions of the foundation, and three diffarent Polsson's ratios, have been computed, by using Fourier' s series.
1~5 GERRARD, CM DAVIS, EH WAEDLE, LJ Estimation of settl~ments of cross-amisotropic deposits using isotropic theory. Figs,Tabls. AUST.G~. J.V. G2~ NI, i~72, PI-10. ~ne error i~volved in estimating the settlement of cro~ss-amiso~opic deposits using isotropic theory is predicted. Special consideration is given to incompressible materials. Graphs and contour diagrams sho~ the effects of the controlling parameters. The errors involved i~ practice~ are deduced from experimental measurements amd a simple theoretical model of layered media.
Slopes See also abstract: 1711. 1686 BALDOVIN, G S ~ •APPLIC. G E O ~ H . MILAN, I FA~fORE,A IMP.A.FAPo~URA SPA,MILAN, I Example of elope stabilization in marly-sardstone flysch. CoDgress. Preprint. IIF,2R. THIBD INTERNAT.CONGRESS ON ROCK MECHANICS,TH~ 3, SURFACE WORKINGS, DENVER, S E ~ . 197~, 6P. In-situ amd laboratory studies to investigate possible ways of stabilizing a slope along the Savona-Ventimiglla highway, ar~ t h e actual steps taken %o this purpose, are relx~ed. The sliding movement has been arrested by a series of interconnected works - 35m deep substructure shafts~ a 19m hitch retaining wall amd a series of ar~or elements of a maximt~m l e ~ of 75m. 1687 BARTON, N NORWEG. GEC~ECH. INST. 0SLO, N Rock slope performance as revealed by a physical Joint model. Cor~ess. Preprint. IOF,2T,6R. THTRD I~FfERNAT.CO~RESS ON ROCK MECHANICS, T H ~ 3, SURFACE WORKINgS,DENVER, SEPE. 197~, 9P. "Two-dimensionsl" physical Joint models (sesle l: 500) were used to study the deformation ard failure of slopes cut through Jointed rock masses. The m~dels were consolidated add stressed an~ slopes were excavated in them s / ~ loading. Two, identically Jointed, models are compared. One model was stressed horizontally to approximately half t h e self weight ~=~-~Ical stress ~radient, the other to twice the vertical stress gradient. The slope crest d~fcrmation appeared to be irzleperdent of the horizontal stress level.
1688 FISSENED~ GL VNIMI~ LENI~RAD~ SU MO~SCHALOV~AM %rNIMI,LEI~fI~RAD~~J Oper~a~ deep slope stability. Com@~'ess. Prelx'im%. In German. ~F, SR. THIRD IN~ERNa~.CONG~ESS ON ROCK MECHANICS,T~ME 3, SURFACE WORKINGS, DENVER, ~PT. 197~,6P. This paper considers the relationship between cohesion in the model and cohesion in the rock mass, and takes into accou~ the Jolntimg intensity. Frum the results of b~th in-sltu amd model tests it has been established that the statics of loose media may be applied to these rocks. Using this theory discontimnity planes which exist in rock mass rosy be considered. The assessment of stability in open-cast slopes is carried out by systematic monitcrlmg of deformations. The d a ~ of measured deformations is dst~rmined by comparison of the measured strain rste with critical values established from field observation.
1~9 GAZ]~V, EG INS~. HYIR(~KXIECT, MOSCOW, SU RECHITSKI, VI IN~. HYIROPROJ~,MOSC~W, SU Stability of shratlfied rock slopes. Compress. Preprint. 5F, 2T,~R. THIRD I ~ . C 0 ~ R E S S ON ROCK ~ C S , T H ~ 3, SURFACE WC~KINGS, DENVER, ~-~T. 1974,6P. This paper deals with strstlfied rock slopes um~ercu~ by two Joints, the bedding planes being parallel both to the stemply-dlpplmg and to the ~ently-diPlX[~ Joints. Theoretical equations for cslculsting the ssfety f a c ~ s for each of the rock layers and for the rock mass as a whole are obtained from theoretical analysis of the rock mass stability consldorlr~ the interaction between the blocks constltutimg the rock mass. The thecreticel conclusions are suPlx~ed by results of tests carried out on structural plaster models. 80 such models, representing rock slopes of various structural patterns were tested. 1690 MCMAHON, BE AUSTR.ROCK CONSULTANTS, N. S.W.AUS Design of rock slopes ~gainst slidlmg on l~eexistIng frsetures. Comgress. Preprint. 9F,7R. THIRD INI~LNAT.CO~RES3 ON ROCK ~CHANICS,THEME 3, SURFACE WC~KI~S, DENVER, SEP~. 1974,6P. Procedures are presented for the design of slopes in rocks of sufficient strength that failure will tske place mainly by sliding along rock fractures, and that failure through the rock substance will be restrlcted to the relatively highly stressed region near the toe of the slope. A sim@le p a r a d e r , the crltlcal dip, is introduced to c~mbine the effects of shear strength, grourdwater forces, earthquake forces and geometry of the slide mass. Fracture orientations arm analysed statistically and the probability of failure is then obtained. The optimum design slope is selected as the slope at which the estimated total present value of the costs of waste excavation, landslide repair and lost production are a minimum. Auth. 1691 RUIZ, ND CNEC, SAO PAULO, BR Minim~n anchorlmg cost for stabilization of rock slopes. Comgress. Preprlnt. 9F,~R. THIRD IN~ERNAT.CONGBESS ON ROCK MECHANICS,TH~24E 3, SURFACE WORKINGS, DENVER, S~P~. 1974,7P. A method is presented for the design of stabilization by pre-stresslng of rock slopes intersected by one or any number of ra~c~ly crleuted discontlm~tity plane~. The effect of these plsmms is shown to bm asslmilsted into the effect of a simgle hypothetical plane striking parallel to the slope face ard with approl~late dip.
tic zone amd the bottc~ elastic zone are t r a n s f c ~ to non-dimemsiomal form ar~ solutions are obtained. A rA~nericel problem is worked out to illustrate the use of the plots to obtain the top deflection amd the msx~w, mc~en~ of the pile.
168~ MILOVIC,DM KOSOVO PROJ. ~ R A D E , YU TOURNI~, JP HYDRO- QUEBEC, M O N I ~ , CDN S~resses amd displacements due to rigid resta~gular foumdation on a layer of finite thickness.6F,16T,8R. SOILS AND FOUNDATIONS,VI3,N~,DEC.1973,P29-~3. Expressions are given for the calculation of stresses and displacmnents beneath the rigid rectangular foumdation resting on an elastic isohropic layer of finite thlck~ess, ~zlerlain by a rigid base, assuming th~ contact between the compressible laye~ and the rigid base to be p~rfset~y rot~. Stresses ani d i s p l a ~ n t s for five different thicknesses of compressible layer, three different ratios of dz~mensions of the foundation, and three diffarent Polsson's ratios, have been computed, by using Fourier' s series.
1~5 GERRARD, CM DAVIS, EH WAEDLE, LJ Estimation of settl~ments of cross-amisotropic deposits using isotropic theory. Figs,Tabls. AUST.G~. J.V. G2~ NI, i~72, PI-10. ~ne error i~volved in estimating the settlement of cro~ss-amiso~opic deposits using isotropic theory is predicted. Special consideration is given to incompressible materials. Graphs and contour diagrams sho~ the effects of the controlling parameters. The errors involved i~ practice~ are deduced from experimental measurements amd a simple theoretical model of layered media.
Slopes See also abstract: 1711. 1686 BALDOVIN, G S ~ •APPLIC. G E O ~ H . MILAN, I FA~fORE,A IMP.A.FAPo~URA SPA,MILAN, I Example of elope stabilization in marly-sardstone flysch. CoDgress. Preprint. IIF,2R. THIBD INTERNAT.CONGRESS ON ROCK MECHANICS,TH~ 3, SURFACE WORKINGS, DENVER, S E ~ . 197~, 6P. In-situ amd laboratory studies to investigate possible ways of stabilizing a slope along the Savona-Ventimiglla highway, ar~ t h e actual steps taken %o this purpose, are relx~ed. The sliding movement has been arrested by a series of interconnected works - 35m deep substructure shafts~ a 19m hitch retaining wall amd a series of ar~or elements of a maximt~m l e ~ of 75m. 1687 BARTON, N NORWEG. GEC~ECH. INST. 0SLO, N Rock slope performance as revealed by a physical Joint model. Cor~ess. Preprint. IOF,2T,6R. THTRD I~FfERNAT.CO~RESS ON ROCK MECHANICS, T H ~ 3, SURFACE WORKINgS,DENVER, SEPE. 197~, 9P. "Two-dimensionsl" physical Joint models (sesle l: 500) were used to study the deformation ard failure of slopes cut through Jointed rock masses. The m~dels were consolidated add stressed an~ slopes were excavated in them s / ~ loading. Two, identically Jointed, models are compared. One model was stressed horizontally to approximately half t h e self weight ~=~-~Ical stress ~radient, the other to twice the vertical stress gradient. The slope crest d~fcrmation appeared to be irzleperdent of the horizontal stress level.
1688 FISSENED~ GL VNIMI~ LENI~RAD~ SU MO~SCHALOV~AM %rNIMI,LEI~fI~RAD~~J Oper~a~ deep slope stability. Com@~'ess. Prelx'im%. In German. ~F, SR. THIRD IN~ERNa~.CONG~ESS ON ROCK MECHANICS,T~ME 3, SURFACE WORKINGS, DENVER, ~PT. 197~,6P. This paper considers the relationship between cohesion in the model and cohesion in the rock mass, and takes into accou~ the Jolntimg intensity. Frum the results of b~th in-sltu amd model tests it has been established that the statics of loose media may be applied to these rocks. Using this theory discontimnity planes which exist in rock mass rosy be considered. The assessment of stability in open-cast slopes is carried out by systematic monitcrlmg of deformations. The d a ~ of measured deformations is dst~rmined by comparison of the measured strain rste with critical values established from field observation.
1~9 GAZ]~V, EG INS~. HYIR(~KXIECT, MOSCOW, SU RECHITSKI, VI IN~. HYIROPROJ~,MOSC~W, SU Stability of shratlfied rock slopes. Compress. Preprint. 5F, 2T,~R. THIRD I ~ . C 0 ~ R E S S ON ROCK ~ C S , T H ~ 3, SURFACE WC~KINGS, DENVER, ~-~T. 1974,6P. This paper deals with strstlfied rock slopes um~ercu~ by two Joints, the bedding planes being parallel both to the stemply-dlpplmg and to the ~ently-diPlX[~ Joints. Theoretical equations for cslculsting the ssfety f a c ~ s for each of the rock layers and for the rock mass as a whole are obtained from theoretical analysis of the rock mass stability consldorlr~ the interaction between the blocks constltutimg the rock mass. The thecreticel conclusions are suPlx~ed by results of tests carried out on structural plaster models. 80 such models, representing rock slopes of various structural patterns were tested. 1690 MCMAHON, BE AUSTR.ROCK CONSULTANTS, N. S.W.AUS Design of rock slopes ~gainst slidlmg on l~eexistIng frsetures. Comgress. Preprint. 9F,7R. THIRD INI~LNAT.CO~RES3 ON ROCK ~CHANICS,THEME 3, SURFACE WC~KI~S, DENVER, SEP~. 1974,6P. Procedures are presented for the design of slopes in rocks of sufficient strength that failure will tske place mainly by sliding along rock fractures, and that failure through the rock substance will be restrlcted to the relatively highly stressed region near the toe of the slope. A sim@le p a r a d e r , the crltlcal dip, is introduced to c~mbine the effects of shear strength, grourdwater forces, earthquake forces and geometry of the slide mass. Fracture orientations arm analysed statistically and the probability of failure is then obtained. The optimum design slope is selected as the slope at which the estimated total present value of the costs of waste excavation, landslide repair and lost production are a minimum. Auth. 1691 RUIZ, ND CNEC, SAO PAULO, BR Minim~n anchorlmg cost for stabilization of rock slopes. Comgress. Preprlnt. 9F,~R. THIRD IN~ERNAT.CONGBESS ON ROCK MECHANICS,TH~24E 3, SURFACE WORKINGS, DENVER, S~P~. 1974,7P. A method is presented for the design of stabilization by pre-stresslng of rock slopes intersected by one or any number of ra~c~ly crleuted discontlm~tity plane~. The effect of these plsmms is shown to bm asslmilsted into the effect of a simgle hypothetical plane striking parallel to the slope face ard with approl~late dip.