Materials for high embankment dams

24A included lowering the dam crest and the maximum reservoir operating level. 851206 Emergency drainage system at the dam 3 - Outardes 4 development Dascal, O; Comeau, W Can Geotech J V20, N4, Nov 1983, P746-757 A sudden outburst of water was recorded at the downstream toe of dam 3 of the Outardes 4 project, Quebec, Canada. It was deduced that the probable cause was the presence of a roadfill on the downstream rockfill zone acting as a barrier resulting in water accumulation in the downstream shell. An emergency drainage system whose major component was a tunnel excavated in the bedrock under the dam was installed and subsequently tested. 851207 Eastmain River Dam - A case history of mass compaction in earth dam construction Rosenberg, P; Pare, J J Can Geotech J V20, N4, Not, 1983, P773-781

851213 Instrumentation of the Guri Dam Int Water Power Dam Constr V35, N5, May 1983, P29-33 An instrumentation system is being installed at the Guri Dam, Venezuela, to monitor performance. It is expected that the 1800 instruments installed will yield up to 40,000 readings per month. A computer system to validate and store the data and to assist in interpretation has been developed. 851214 Materials for high embankment dams Vutsel, V I; Zaretsky, Y K; Vorontsov, E 1; Chernilov, A G: Chumichev, B D lnt Water Power Dam Constr V35, N8, Aug 1983, P33-37 Describes methods of testing soil materials to determine their physical and mechanical properties for use in stress and strain analyses of high (greater than 70m) rock fill dams. 851215 Analysing anchor loads in rucidili dams Brown, B S; Pells, PJ N int Water Power Dam Constr V35, N8, Aug 1983, P50-53

The river section of the OA-11 dam on the Eastmain River, Quebec, Canada, was constructed by building up a pad of granular fill across the river from the river banks and diverting the river through a spillway located in the bedrock on the south shore. The fill was then compacted by vibroflotation.

Finite element analysis has been used to examine the loads generated in the anchors of a reinforced rock fill dam during construction and subsequent overtopping. The results are compared with those obtained from limit equilibrium analysis.

851208 Materials for embankment dams Penman, A D M lnt Water Power Dam Constr V35, N1, Jan 1983, P15-19

851216 Foundation treatment for India's Salal dam Chadha, B R lnt Water Power Dam Constr V35, N8, Aug 1983, P53-56

Examines the most commonly used fill materials for embankment dams and indicates areas where further research would be valuable.

Extensive grouting has been used to treat the foundation area of the Salal Dam where a large number of shear zones are present. All shear zones, seams and chert bands under the core base have been excavated to twice their width and filled with concrete. Cut offs have been installed where bedrock permeability has not reached 10 Lugeons after consolidation grouting.

851209 Use of geotextiles in French earth dams Loudiere, D; Fayoux, D; Houis, J; Perfetti, J; Sotton, M lnt Water Power Dam Constr V35, N1, Jan 1983, P19-21 The general applications of geotextiles are discussed and tentative design criteria are proposed. 851210 Asphaltic concrete membranes in embankment dams Bunn, R A lnt Water Power Dam Constr V35, N1, Jan 1983, P22-24 851211 Embankment dams with polyethylene and steel membranes Glebov, V D; Kuznetsov, V S lnt Water Power Dam Constr V35, NI, Jan 1983, P25-28 Research and experience in the USSR on the construction of embankment dams with polymer film and steel watertight membranes. 851212 Safety of dams Blind, H lnt Water Power Dam Constr V35, N5, May 1983, P17-21 Dam failures and their proportion in relation to existing dams are discussed. It is concluded that although it is not possible to predict future dam failures from figures for previous failures, examination of the causes of damage can be useful. Measures in the design and construction to improve dam safety are suggested.

851217 Instrumenting Thailand's Khao Laem dam Ohdedar, D N ; Dawes, BJ Int Water Power Dam Constr V35, NI2, Dec 1983. P31-34 A new lightweight concrete face slab design has been used for the Khao Laem rock fill dam. Extensive instrumentation has been installed to monitor the dam displacement, including an inclinometer system installed at 4 cross sections of the upstream face of the dam. 851218 Underground mining near large Australian dams Cantwell, B L; Whitfield, L M lnt Water Power Dam Constr V36, N4, April 1984, P20-24 Outlines practices currently used by the New South Wales Dams Safety Committee to ensure the safety of dams and reservoirs with underground mining located nearby. Three examples illustrating the mining systems permitted and the monitoring required are described. 851219 Post-construction deformation of rockfili dams Clements, R P J Geoteeh Engng Div ASCE VllO, NGT7, July 1984, P821840 A study of the post-construction crest settlements and deflections of 68 rockfill dams has been made in order to assess the usefulness and accuracy of the prediction of such deformations