Mine dewatering at knob lake

Mine dewatering at knob lake

137A 786150 FAILURE MECHANISMS IN MODEL REINFORCED EARTH WALLS Smith, A K C; Wroth, C P Groumd Engng, Vll, N6, Sept 1978, I~3-45 Reports an investiga...

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137A

786150 FAILURE MECHANISMS IN MODEL REINFORCED EARTH WALLS Smith, A K C; Wroth, C P Groumd Engng, Vll, N6, Sept 1978, I~3-45 Reports an investigation using the radiographic method to show up rupture surfaces amd to moniter strains during construction. Three types of reinforcement were used, dense reinfercement, shert, wide relnfercement, and long, thin reinforc~sent. Gives an analysis developed using the simple Coulomb method of block movement. 786151 DESIGN ASPECTS OF REINFORCED E A R T K C O N S ~ I O N Cole, E R L Ground Engng, VII, N6, Sept 1978, I ~ - 5 0 Discusses typical cross-sections, costs, reinfercing elements, connections, properties ~f fill material. 786152 DEFORMATION OF D ~ P EXCAVATIONS Stroh, D; Breth, H In: Nt~nerical Methods in Geomechanlcs (Papers to 2nd International Conference, Blacksburg, Va, June 1976), V2, P686-700. Publ New Yark, ASCE, 1976 786153 FINITE E L ~ ANALYSIS OF STRESSES AND M O V ~ N T S IN EXCAVATIONS Izl~nl, H; Kamemura, K; Sato, S In: Numerical Methods in Geomechanlcs (Papers to 2rd International Conference, Blacksburg, Va, June 1976), V2, P701-712. Publ New Yerk,

Asc~, ~976

Base courses and pavements 786154 HEAVING OF A SAND BASE AS A CONSEQUENCE OF THE DEVELOPMENT OF SECONDARY CRYSTAL HYDRATE FORMATIONS Sokolovich, V E; TToitskii, G M Soil Mech Found Engng, VI3, N6, Nov-Dec 1976,

Describes the characteristics of the five experimental pavements built between 1976 ~ 1977, amd gives initial conclusions concerning their use. Descril~ions of some of these pavements have already bee~ published. The feasibility of such a structure seems to have been established. The evolution of these pavements under traffic will make it possible to specify the level of traffic beyond which special characteristics of the improved subgrade (drainage course or treated course) will have to be imposed.

786157 TREATMENT OF GRAVEL WITH A SPECIAL C ~ N T ~ G H ~ G C O U N T (FAR) (I~ Z~NCK)

OF

Allo1~che, C; Par~s, A; Veysset, M Bull Liaison Lab Ponts Chattssees, N95, MayJune 1978, P133-139 A road binder called FAR, composed of ground slag, anhydrite ar~ clinker has been developed. LabOratory ar~ on-site studies conducted since 1972 have shown the characteristics of this binder: progressive hardening, high strength, ani an elastic index of about 20 cms under optimal comditions, using a proportion of 3.5 per cent.

7~158 ~ ~ A L ~,'~NT-G~L c ~ , ~ Y ~'~m TRAFFie (IN ~NCH) Ber~ben, J P; Bronsse, J L Bull Lisdson Lab Ponts Chaussees, N95, MayJ%hne 1978, PI~0-145 RepGrts the use of a cement-gravel mix i~orporating a setting retarder on a section of the Route Natiomale ll7 in France. The study includes control of aggregate size, control of formulation and laying of the mix, amd non-destructive testing of the mix at ages between 1 day ard 2 years. 786159 ROADBED CONSTRUCTION IN SWELLING ROCKS (IN RUSSIAN) Kutsnashvili, 0 V Transp Stroit, N1, Jan 1978 , P6-7

P376-378 Floor heave ar~ deformation of load-bearing structures at a sugar refinery in Mosc~, built on fine sands, was fo%hnd to have been caused by leakage of aqueous solutions of caustic soda arzl 8/nmor~l~nchlOride from the chemical processes into the supporting soils. Sodlt~n chloride and a~monia ware formed, the salt accumulating as a crystal hydrate arzl causing the floor heave over a period of seversl years. 786155 DETERMINING THE HEIGHT OF FILL BENEATH INDIVIDUAL BUILDINGS AND OTHER STRUCTURES FRCM THE DEPI~ OF SEASONAL FREEZING Ramanenko, I I Soll Mech Found Engng, VI3, NS, Sept-Oct 1976, P339-341 A model investigation to quantify the the~nal effect of a bank of local fill on the depth of seasonal freezing and thawing of a foumda~ion bed. The results are used to determine the design thlckness of fill to meet acceptab]e limits of deformation in the foundation ard building. 786156 THICK CONCREI~ SLAB WITHOUT FOUNDATION: INITIAL RESULTS OF FIVE EXPERIMENTAL PROJECTS (IN

~ENCK) Gluals, G; Nissoux, J L Bull Liaison Lab Ponts Chaussees, N~5, MayJune 1978, P91-96

Geological factors of importance in surface structures

786160 SOME UNUSUAL STRUCTURES IN THE RIVER GRAVELS OF THE THAMES BASIN Wakeling, T R M; Jennlngs, R A J Q J Engng Geol, vg, N3, 1976, P255-263 Four sites in the London srea are described where sandy gravel overlies London Cl%y. On two of these sites the unexpected occurrence of deep steep-sided natural delressions in the surface of the London Clay gave rise to delays during the construction of civil engineering works. On the other two the del~essions were discovered durir4~ the initial site investigations and appropriate measures for dealing with them ware tsken in good time. The Origin of the del~essions is not considered.

Groundwater problems 786161 MINE DEWATERING AT KNOB LAKE Charbonneau, D; Morrison, D Paper no ll to CIM .Ist Open Pit Operators Conference, LabradQr, 16-18 May 1977, 10P

138~

786168 COIVl'ROUEDBLM?INGWITHLICHM%@ED CEARGEEOLDERS Foarney, WL; DaJ-ly,JW; Hollowey,DC I& JRockMech WnSci, Vl5, X3, Juxm l.978, Pl21-129 86162 mm EVALUA!L'IC!NOFTBEDIFFlWElsCEl%lWEEN GRCUH3VIBRMIONSANDTRDSEIN~FOTJNDATIONOF A_ Pavlyk,V S

Anwqtredmie

dm.%vedt;orepresenta %ransfer coefficient' which maybe used to iaaicate how t%[email protected] of a f’mda~ion d.ifYkr~ f2om the viliration tlmplit\de of the gcoud atadistamewhere s0ildef0rmition effectsdue to a load on'the foundationbecome wigible. This expreseionis_tested by construct- spectraf0r groux& vibrationbased onpublieheds eismme&ic data am2 camparing thim3withthevibrationsremrtedforthe fouxxTati0ns in this data.

paper descrlbeaexgq%nez$a de$fp?dto d&rate the fea&mXZty of c0ntHLUdfractureinblasting. l%efra&ureinitiatiwsites were placed at e~ifiedl0c@tionebyuUlizin($ acharge-holding&vice.The43h&r~h0ldiag:astieewae at&in-wallsdsteelt&ewhichcont~asd lb*tudinsl slits at the spslcified position Of the fr@%re i#t&itio?lsites.Expertmmtswerefirst collrPactsawi**insnaets Of atransparentbirafriugerrtpf&ymraathemcdel xmterial.Hcwmr, afterthe charge-holding&?ticeheZibeenImprow&, eimnarte&swu~@donductedtodemcm&mte co;trtrro5led f?aEearein relatively%ick ph&es if P&x&&as amI Westerly@xuxLte. This

786169 ~~~ILLATIMGwATHtTET~KE3FINGTEcHpsIQuE Reichman,J M; Cbm, J B II& J Rock Meah Min Sci, Vl5, I#+,Aug 19i'81 p135;144

86163 PULS&-IMPACTHAMMJTRSFORFROZENROCKS(INRUSLobanov,D P; Sokorev,AV Russia: Minist VygrsahSrednSpete Obrazov,Izv VUZ Geol Razved,N'7,July 1977, P174-175 %6164 PRES@m Sm!mAqPRoSFEcTsFpR!mDEvELczzMENp SOFFROZEZ7 'OFE ROCKEXCAVATI'X?(INRUSSIAN) Misnik,IM;Plrtkras0v,LB LerdqmdG0rnInst Zap, V67, Nl, lg'?'5, =5-41 m.65 BONBETRJEENRIFPERSANDSEASO=YFROZENGROUI'iD(INRUSSIAN) &y%%:

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Mash, Vlg, 1975, fl4-79

Cuttingdeep slcrtslnrockwith awabrj_+traqueanc-Utakerf ires a nozzle cox&&umti~that wideenoue;hfccthe nozzleaesmblytoetiar. A tool far cuttb# stih elate,wbichutiliiesti orscillati~meehmi~,ha~ bemdcvdtopr?d.%%' de;tiiceueee o&Ly str&lc%W.eandie i~@WenEly more reliehlelihm a rW~~~device.~The dblp kerfingtestshavebeenoc?r&u&ed on avarieby of rock. Ba8ed ontset d&%,m a m&c&l llloaal that canpmmt eut$t~rrafsshas-~ndcveloped.Thiamodelpapinl;t;sth~&*ofvariaus applicationsofde+$4C@H!* n0zzle8ti%@%Xt requT.ring expensiveexvaltest progntlns. 78617O~IONOFTEET&F~tiyEicE~.~S OFROLL&BfiSOFLAR@%b Bawtmrq L; Sill, D; Gluckauf-frxxchun@Q 92-56 Laboratoryexgarimenteoncutterbitewere carriedarrtwiththe aimofdevarlafdag~er~ li@terf%Xt-facehead$q~ns+&~~rd~k. Thetestawe=sFergyc * dataaquisitionwas~~c~

86166

Resultsobtaincdindrivagcthroueibrockby drlllingauiblasti1lginvari0ushu?nch~fieldsarereprted,azxidetaileeregivenof mechanieedbOltingg,whichprOvedverysuccessful.

-mcm141E PVi (IN CZ%%) Vasek, J uhli, V25, Ng, sept 1977, p3%-376