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Instrumenting Australia's Cethana dam
87.~.
833198 ROCK BOLT REI?~%~ORC~.~hT SYL~%'E::TO ST%~BIL!SE A~L~_~T I~KI~SECTION$ AI~D PIT BOIVOM RO%I~,'AYS DURING UNDF2GROUND ItECONSTRUCTION Ringh, R N; Heiderieh Zadeh; A ?,[ Proc 23rd Symposium on Rock Mechanics, Berkeley, 25-27 August 3982, P961-970. Publ New York: .=.~.9;, !982 The l:~.per presents a stability investigation of shaft intersections and pit bottom roadways in the vleJnlty of upc~st and downcast shafts at a colliery in the UK. : scheme of instrumentation was aimed at monitoring the strata displacement surrounding the pit bottom roadways and shaft intersections. The borehole instrumentation results together with a theoretical analysis suggested that the cause of instability could be £ttributed to the drivage of a roadway within the shelf pillar. - semi-empirlcal technique vas used to calculate the ~nount of support resistance required to reinforce the pillar to take additional abutment load.
833199 EQUIP!E.g., A[~taTION,
ROCK ~.~CK&NIcS FRINCIFLES AND SAFETY INTERFACES IN THE CONTROL OF ROOF AND RIBS OF. ?'f~}~S Scott, J J
Proe 23rd S~posi~m on Rock Mechamdcs~ B ~ k e l e y , 25-27 August 1982, P~71-98~. l ~ l New York: ..\~,~, 1962 Presents the basic princlples to be followed to ereute s truly inherently safe mining system. The need to relate the support mechanism to be employed to the ground reaction curve and basic rock mechanics principles is pointed out. Following support selection the mechanics of inst~-llation must be developed through cooperation between mine engineers, mine oper.-tors, safety personnel ~nd gover~nent inspectors.
Surface Structures Dams and embankments fee. iso: ~,330£':, 833232, 833233, 833253, 833262 833200 KO~T,LE ~{:-.NGR~ U?SET ~ I S H PL~N~ Ferguson, H New C~v Engr, N524, 20 Jan 1983, P30-35 Case study of the construction of the Kotn~le Dam, ?ri Lankly, p:~t of the !~ahawell power scheme. The rock fill dam, eriglna/ly to have cl'~y core, has been shifted 200m downstream and now h'~s an u p s t r e ~ concrete membrane. Problems encOuntered included an ares of highly unstable ground right on the cxls of the d~n, "~ thick bed of cryst:~lllne limestone threatening leakage %under the d:~, '~nd sOme msJer faults which could h:~ve led to reservoir Ir~uced seismlcity. Also, the downstream drive hit a zone of highly unstable Jointed quartzite, requiring the use of steel arch ribs, shotcrete, mesh, rock bolts and extensive grouting. 833201 ~'~'~'~7~ OF q~.~O OIL T.:~S ON }EADUNA L.',TFIRITIC ZOIL~ IN ~TIG~L. Ola, ? .Q J Engng Geol, \:15, ~ , 1982, P317-324 :~tudles the conce_ot of elastic settlement, using "~n i d o l field situation of an unsatUrated, relatively uniform .~nd homogeneous soil loaded eMMS 20/3
for a short period. For the cases of the tanks, the calculated elastic plus consolidation settlements agree well with the settlements observed during water tests. The consolidation settlement was found to be relatively Insigrdficant and for the case of Unsaturated, lateritlc soil loaded for a short period, the elastic settlement can be used to predict settlemerd:so
833202 LONG-TE~[ ~40h~ITORING OF ~._~ALqT.~ D~.~.[SIN BRITAIN Penman, A D ~.[; Kenl%~--~d, !.'.F Int Water Power Dam Constr, V34, ~ I , P!9-26
Nov 1982,
The development of v~rlous types of dam monitoring instruments are described, with examples of installation and operating experience in Britain. Settlement and pore pressure records from 1950 onwards are also examined and assessed. 23 refs. 833203 I N S T R [ U ~ I N G AUSq~;LIA'S CET}U~N~ D~< Fitzpatrick, M D; Barnett, R H W Int Water Power Dam Constr, V34 , Nil, Nov 1982 , P26-31 Describes the monitoring system used at Cethana Dam, Austrs_lia, and presents d a ~ collected over I? y e ~ perioa. 833204 SAFETY MONITORING OF CONCRETizE D:J
~7-51 A ease study of the Nova Avanhandava Dam construtted in basaltic rock. Design considerations tock into account fractured, weathered or permeable areas distributed in a sound and impervious rock mass throughout the foundation. A geOtechnieal classification of the rock was used in stability ar~lyses. An earth-rockfill dam was built on the right bank and sn homogeneous earth dam on the left bar/~. 833206 ICOLD':z 14 CONGREZS. PART TWO Int Vater Power D~ml Constr, V34, N81 Aug 1982, P37-40 Reviews some of the papers presented at the Congress on the following toRics: sedimentation of reservoirs and slope stability, and materials and construction methods for embankment dams and cofferdams. See item 833209 for part i. 833207 ADDING A FIFTH UNIT TO IDAHOtS BROWNLEE DAM Hougen, O; Rur~n, K Int Water Power Dam Constr, V34, NT, July 1982, P15-18 case study of the construction of the fifth unit at the Brownlee dam, Idaho, USA. Rock mechanics studies revealed the need fc~ heavy rock reinforcement. High strength steel bolts grouted into place with a fast setting resin were chosen, together with wire meshing.
833198 ROCK BOLT REI?~%~ORC~.~hT SYL~%'E::TO ST%~BIL!SE A~L~_~T I~KI~SECTION$ AI~D PIT BOIVOM RO%I~,'AYS DURING UNDF2GROUND ItECONSTRUCTION Ringh, R N; Heiderieh Zadeh; A ?,[ Proc 23rd Symposium on Rock Mechanics, Berkeley, 25-27 August 3982, P961-970. Publ New York: .=.~.9;, !982 The l:~.per presents a stability investigation of shaft intersections and pit bottom roadways in the vleJnlty of upc~st and downcast shafts at a colliery in the UK. : scheme of instrumentation was aimed at monitoring the strata displacement surrounding the pit bottom roadways and shaft intersections. The borehole instrumentation results together with a theoretical analysis suggested that the cause of instability could be £ttributed to the drivage of a roadway within the shelf pillar. - semi-empirlcal technique vas used to calculate the ~nount of support resistance required to reinforce the pillar to take additional abutment load.
833199 EQUIP!E.g., A[~taTION,
ROCK ~.~CK&NIcS FRINCIFLES AND SAFETY INTERFACES IN THE CONTROL OF ROOF AND RIBS OF. ?'f~}~S Scott, J J
Proe 23rd S~posi~m on Rock Mechamdcs~ B ~ k e l e y , 25-27 August 1982, P~71-98~. l ~ l New York: ..\~,~, 1962 Presents the basic princlples to be followed to ereute s truly inherently safe mining system. The need to relate the support mechanism to be employed to the ground reaction curve and basic rock mechanics principles is pointed out. Following support selection the mechanics of inst~-llation must be developed through cooperation between mine engineers, mine oper.-tors, safety personnel ~nd gover~nent inspectors.
Surface Structures Dams and embankments fee. iso: ~,330£':, 833232, 833233, 833253, 833262 833200 KO~T,LE ~{:-.NGR~ U?SET ~ I S H PL~N~ Ferguson, H New C~v Engr, N524, 20 Jan 1983, P30-35 Case study of the construction of the Kotn~le Dam, ?ri Lankly, p:~t of the !~ahawell power scheme. The rock fill dam, eriglna/ly to have cl'~y core, has been shifted 200m downstream and now h'~s an u p s t r e ~ concrete membrane. Problems encOuntered included an ares of highly unstable ground right on the cxls of the d~n, "~ thick bed of cryst:~lllne limestone threatening leakage %under the d:~, '~nd sOme msJer faults which could h:~ve led to reservoir Ir~uced seismlcity. Also, the downstream drive hit a zone of highly unstable Jointed quartzite, requiring the use of steel arch ribs, shotcrete, mesh, rock bolts and extensive grouting. 833201 ~'~'~'~7~ OF q~.~O OIL T.:~S ON }EADUNA L.',TFIRITIC ZOIL~ IN ~TIG~L. Ola, ? .Q J Engng Geol, \:15, ~ , 1982, P317-324 :~tudles the conce_ot of elastic settlement, using "~n i d o l field situation of an unsatUrated, relatively uniform .~nd homogeneous soil loaded eMMS 20/3
for a short period. For the cases of the tanks, the calculated elastic plus consolidation settlements agree well with the settlements observed during water tests. The consolidation settlement was found to be relatively Insigrdficant and for the case of Unsaturated, lateritlc soil loaded for a short period, the elastic settlement can be used to predict settlemerd:so
833202 LONG-TE~[ ~40h~ITORING OF ~._~ALqT.~ D~.~.[SIN BRITAIN Penman, A D ~.[; Kenl%~--~d, !.'.F Int Water Power Dam Constr, V34, ~ I , P!9-26
Nov 1982,
The development of v~rlous types of dam monitoring instruments are described, with examples of installation and operating experience in Britain. Settlement and pore pressure records from 1950 onwards are also examined and assessed. 23 refs. 833203 I N S T R [ U ~ I N G AUSq~;LIA'S CET}U~N~ D~< Fitzpatrick, M D; Barnett, R H W Int Water Power Dam Constr, V34 , Nil, Nov 1982 , P26-31 Describes the monitoring system used at Cethana Dam, Austrs_lia, and presents d a ~ collected over I? y e ~ perioa. 833204 SAFETY MONITORING OF CONCRETizE D:J
~7-51 A ease study of the Nova Avanhandava Dam construtted in basaltic rock. Design considerations tock into account fractured, weathered or permeable areas distributed in a sound and impervious rock mass throughout the foundation. A geOtechnieal classification of the rock was used in stability ar~lyses. An earth-rockfill dam was built on the right bank and sn homogeneous earth dam on the left bar/~. 833206 ICOLD':z 14 CONGREZS. PART TWO Int Vater Power D~ml Constr, V34, N81 Aug 1982, P37-40 Reviews some of the papers presented at the Congress on the following toRics: sedimentation of reservoirs and slope stability, and materials and construction methods for embankment dams and cofferdams. See item 833209 for part i. 833207 ADDING A FIFTH UNIT TO IDAHOtS BROWNLEE DAM Hougen, O; Rur~n, K Int Water Power Dam Constr, V34, NT, July 1982, P15-18 case study of the construction of the fifth unit at the Brownlee dam, Idaho, USA. Rock mechanics studies revealed the need fc~ heavy rock reinforcement. High strength steel bolts grouted into place with a fast setting resin were chosen, together with wire meshing.