Symposium

REHABILITATION OF DAMS

PROCEEDINGS

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4th November, 1998 New Delhi (India)

, Organised byTHE INDIAN COMMITTEE ON LARGE DAMS (INCOLD) CENTRAL BOARD OF IRRIGATION AND POWER (CBIP) COMMITTEE FOR INTERNATIONAL GEOSYNTHETICS

SOCIETY—INDIA (CIGSI)GEOGRAPHICAL COMMITTEE OF INTERNATIONAL WATER

RESOURCES ASSOCIATION (INDIA)

EditorsC.V.J. Varma

N. VisvanathanA.R.G. Rao

4CO-ORGANISERS

SPONSORS

BHAKRA BEAS MANAGEMENT BOARDCEGELEC INDIA LTD.CENTRAL WATER COMMISSIONCONTINENTAL CONSTRUCTION LTD.ESSAR PROJECTS LIMITEDGAMMON INDIA LIMITEDHINDUSTAN CONSTRUCTION COMPANY LIMITED

SKANSKA INTERNATIONAL CIVIL ENGINEERING AB

SUPPORTERS

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HOUSING & URBAN DEVELOPMENT CORPORATION LTD.KVAERNER ENERGY a.s.ELECTROWATT ENGINEERING LTD.

IRRIGATION DEPARTMENT, GOVERNMENT OF MAHARASHTRAIRRIGATION DEPARTMENT, GOVERNMENT OF RAJASTHANKARAM CHAND THAPAR & BROS. (C.S.) LIMITEDPATEL ENGINEERING COMPANY LIMITED

JAIPRAKASH INDUSTRIES LIMITEDNATIONAL HYDROELECTRIC POWER CORPORATION LTD.

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FOREWORD

We are grateful to various organisations who have supported this symposium financially.

As dam engineering developed with advancement of technology, new types of dams using different

construction materials came to operation adopting modem designs and method of construction with accent on

safety of these structures as it is considered imperative to derive economic benefits from these dams for as long

a period as possible. This warrants special attention to be given to dams built in earlier times not conforming to

modem designs and construction practices which may have to be rehabilitated through universally accepted

current norms and measures to make these structures quite safe.

Keeping in view the importance of the subject, the Indian Committee on Large Dams (INCOLD), Central

Board of Irrigation and Power (CBIP), Committee for International Geosynthetics Society (India) (CIGSI) and

Geographical Committee of International Water Resources Association (India) are organising a one day

Symposium on “Rehabilitation of Dams” during the 66th ICOLD Annual Meeting, in which about 30 papers,

focussing on all aspects of Rehabilitation of Dams, will be presented.

I congratulate all the authors for excellent contribution of the papers. We express our sincere thanks to

Technical Committee, headed by Mr. N. Visvanathan, for the guidance in selection of the papers.

C.V.J. VARMAChairman, INCOLD

For harnessing water resources of the streams/rivers for catering to various human needs like drinking water

supply, irrigation, hydro power generation, industrial needs etc. man has been constructing dams from time

immemorial. The ancient civilisation of India, Egypt, Mesopotamia and China show that making water

available for domestic use, harnessing it for irrigation and controlling it for flood protection against floods

were basic pre-occupations in these societies. In India there is evidence of canal, dams and dugwells from pre­

historic times.

i:

CONTENTS

ii.

72.

163.

254.

5. 38

6. 48

7. 56

8. 68

9. 74

1. 85

972.

1053.

1274.

1395.

v

Dam Safety-Foundation and Seepage Problems in Existing Structures-Kotah Barrage- A Case StudyM. Gopalakrishnan

Rehabilitation of Koyna Dam - A Case StudyM.D. Pendse, S.N. Huddar and S.Y. Kulkarni

Strengthening, Heightening and Leakage Control Measures for an Ancient Fariman Dam in IranM.E. Omran and H. Abbas

Pagesiii

viiiixx

ForewordOrganising CommitteeFinance CommitteeTechnical CommitteeTechnical Session-I: “Safety Inspection, Review of Hydrology, Spillway

Capacity and Free Board”Some Particularities of Dam Rehabilitation ProjectsF.M.G. Budweg

Safety Inspection and Assessment of Rockfill Dams with Clay CoresC.B. Abadjiev and N.I. Dimitrov

Safety Inspections of Chashma BarrageIzhar-ul-Haq and Khawar Munir

Dams in the United Kingdom - An Industrial HeritageA. Macdonald, T.A. Johnston, J.A. Charles and P. Tedd

Reconstruction of the Spillway of the Nechranice Dam - Scale Model StudyL. Satrapa

Rehabilitation of Pagara Dam in Madhya PradeshM. D. Gidwani

Electricite de France’s Recent Experience in Upgrading Spillways - The Cases of Les Mesce and Motz DamsP. Lazzarini and D. Bister

Review of Hydrology and Spillway Capacity of Simly Dam ProjectIzhar-id-Haq, Zia-ul-Hassan and S. Tanveer Abbas

Hydrological Safety Criteria for Existing DamsL. Berga

Technical Session-II: “Leakage/Seepage Control, Seismic Design and Instrumentation”Leakage Investigations, Safety Analysis and Proposed Remedial Measures at Lar Dam (Iran)M. Salembier, G. Vassiliadis, Y. Le Nindre and A. A. Souhangir

Rehabilitation of an Old German Masonry Dam

L.D. Schewe

1506.

1637.

1738.

1819.

19010.

20111.

2131.

2232.

227

2334.

2445.

6. 257

7. 271

8. 285

9. 298

Technical Session-IV:

1. 309

2. 314

3. 324

vi

ai

Decision Analysis in Dam Safety Monitoring D. Stematiu and C. Abdulamit

Remedial Works for Seepage and AAR Control by Using Watertight Geomembranes A.M. Scuero and G.L. Vaschetti

Integrated Automatic Data Acquisition Systems for Dam MonitoringP. Choquet, M. Dupuis, F. Dadoun and J.M. Klebba

Case Study about Vertical Seismic Motion Effects on Stress in Concrete Gravity DamsShousi Yokotsuka, Tsuneo Uesaka, Isao Nagayama and Takashi Sasaki

Fibre Optic Temperature Measurements for Leakage Detection - Applications in the Reconstruction of DamsM. Aufleger, J. Dornstddter, A. Fabritius and Th. Strobl

Rehabilitation of Dams - Case Study in KarnatakaG. Aswathanarayana and K. V.S. SubrahmanyamMonitoring of Health of Bhakra DamV.K. Nanda

Under Water Treatment of Cracks in Hirakud DamJaya Prakash Chand

Rehabilitation of Dams Under DS ARPE. Sundaraiya

The Deterioration of Earth Dams - An Example: The Rendina Dam Cotecchia V., Monterisi L. and Simeone V.

Rehabilitation of the Matahina Dam for Foundation Fault Trace DisplacementsM.D. Gillon, S. Everitt and L. Mejia

Mangla Dam Structures During 30 YearsCh.Altaf-ur-Rehman

“Chemical Analysis of Deteriorated Dam Material and Risk Analysis”

Risks and Hazards of Dam Failures: Low Cost RemediesFrancois Lemperiere

Risk Analysis for a Slab Buttress Dam in NorwayT. Aamdal

Technical Session-Ill: “Structural Failures/Distress of Dams”Seismic History of Cogoti DamGuillermo Noguera L. and Odrigo Espinoza B.

The Reconstruction of the Collapsed Bituminous Concrete Facing the Moravka Dam, Czech RepublicP. Bfezina, L. Satrapa and T. Skokan

Reconstruction of the Vir Dam on the Svratka River, Southern Moravia, Czech RepublicJ. Bilik and L. Satrapa

Investigations and Remedial Measures to Safeguard the Old Aswan DamWilliam Kamel Shenouda

COMMUNICATION PAPERS

3391.

3492.

3583.

3664.

3735.

6. 379

7. 385

8. 396

9. 405

1. 415

2. 425

3. 434

4. 444

1. 457

2. 466

3. 473

viiI

Failure and Remedies of Chandora Dam in Madhya PradeshS.R.A. Naqvi and Ashok Parashar

Rehabilitation of the Moste Dam on the Sava RiverAndrej Kryzanowski, Vladimir-Mihailov and Dusan Somrak

“Safety Inspection, Review of Hydrology, Spillway Capacity and Free Board”Research on the Use of ALAG Concrete for Hydraulic Abrasion and Cavitation Protection in Dam StructuresJ.L. Cabiron and S. Lavigne

Remote Visual Inspections of DamsPoupart M. and Lanqon H.

Non-Destructive Testing of Existing Concrete and Masonry Dams using UltrasonicPulse Velocity Technique: Case HistoriesA.K. Sthapak, M.L. Soni, N. Chandrasekaran and K. Venkatachalam

Comprehensive Inspections of Dams and Reservoirs in JapanShoushi Yokotsuka, Tadahiko Sakamoto and Norihisa Matsumoto

Dam Safety Programs and PrivatizationAshok K. Rajpal and Ronald A. Corso

Assessment of Freeboard for Existing Earth Dam on Revision of Design Flood - A Case StudyU.K. Sarvaiya, K.G. Rathod and M.G. Golwala

Hydrologic Safety of Dams in India - Practices Followed and Issues InvolvedR.K. Sharma, V.P. Shiv and N.M. Krishnanunni

Selection of the Best Alternative using Multicriterion Technique for HydrologicalSafety Implementation of Existing Soyanggang Dam in KoreaSeok-Ku Ko, Kwansue Jung and Gwangman Lee

Spillway Operation of Candesti Reservoir under Silting ConditionsG. Dimu and N. Dascalescu

“Structural Failures/Distress of Dams”Some Cases of Rehabilitation of Dams in KonkanD.N. Kulkarni and M.K. Kulkarni

“Leakage/Seepage Control, Seismic Design and Instrumentation”Problems of Seepage/Leakage in Earth & Masonry Dams - Few Case StudiesK.G. Rathod, M.G. Golwala andD.A. Shah

Study Concerning the Excessive Leakage from a Large ReservoirA. Popovici, R. Sarghiuta, A. Abdulamit and C. Teodorescu

Remedial Measures to Seepage Problems in Earthen Embankments - Giritale Case StudyE.A.C. Ekanayake

Safety Assessment of the Existing Dam - HPP Mariborski OtokBranko Zadnik

ORGANISING COMMITTEE

MEMBERS

ORGANISING SECRETARY GENERAL

CONVENOR

G.L. JAVAChief Engineer (Designs)Sardar Sarovar Narmada Nigam Ltd.Nannada Project (Dams & Power House)

M.L. GUPTAChief Engineer (Comm.)Himachal Pradesh State Electricity Board

S.K. DESAIPresidentPatel Engineering Company Ltd.

U. BORAAdditional Chief EngineerNorth Eastern Electric Power Corporation Ltd.

S. BHOWMICKAdditional DirectorMinistry of Environment & ForestsGovt, of India

L.K. BANSALDy. General ManagerTehri Hydro Development Corpn. Ltd.

C.V.J. VARMAChairman, INCOLD and

Member Secretary, Central Board of Irrigation and Power

CHAIRMANB.J. PARMAR

SecretaryNarmada, Water Resources & Water Supply Department

Govt, of Gujarat

A.R.G. RAOSecretary & Treasurer, INCOLD and

Advisor, Central Board of Irrigation and Power

V.K. SHARMAAddl. General ManagerNathpa Jhakri Power Corporation Ltd.

K.L. KRISHNA MURTHYChief Engineer (Civil-Gersoppa)Karnataka Power Corporation Ltd.

S. KRISHNAMURTHYSuperintending Engineer & DirectorDam Safety DirectorateWater Resources Organisation, PWDTamil Nadu

R.D. VARANGAONKARVice-PresidentGammon India Ltd.

K.K. KHOSLASuperintending EngineerBhakra Beas Management Board

P.A. KAPURVice-PresidentContinental Construction Company

VICE-CHAIRMANN. VISVANATHANDirector (Technical)

National Hydroelectric Power Corporation Ltd.

FINANCE COMMITTEE

CHAIRMAN

MEMBERS

CONVENOR

R.R. OBEROI, Maj. Gen. (Retd.)ChairmanBhakra Beas Management Board

J.P. GAURPresidentJaiprakash Industries Ltd.

K.K. KAURAManaging DirectorAsea Brown Boveri Limited

ANUP KOTHARIDirectorKothari & Associates

C.P. KOTHARIManaging DirectorOm Metals & Minerals (Pvt.) Ltd.

P.K. KOTOKYChairman-cum-Managing Director North Eastern Electric Power Corpn. Ltd.

SUDHIR GUPTACountry ManagerKvaerner Energy a.s.

G.S. MUKHERJEEVice PresidentKaram Chand Thaper & Bros (C.S.) Ltd.

YOGENDRA PRASADChairman-cum-Managing Director

National Hydroelectric Power Corporation Ltd.

A.R.G. RAOSecretary & Treasurer, INCOLD and

Advisor, Central Board of Irrigation and Power

A. RAMAKRISHNAPresident (Operations) Larsen & Toubro Limited ECC-Construction Group

S.A. REDDIDeputy Managing DirectorGammon India Limited

RAGNAR UDORegional Manager, South AsiaSkanska International Civil Engineering AB

RAVI UPAJDHYAYPresidentCIMMCO International

A.K. VERMADirector (Electrical/Civil)Nathpa Jhakri Power Corpn. Ltd.

CHANDER VERMAManaging DirectorContinental Construction Company

P. VENKATRAMAIAHDirectorProgressive Construction Co. Ltd.

M.D. KHATTARExecutive Director (Construction)Hindustan Construction Co. Ltd.

TECHNICAL COMMITTEE

CHAIRMAN

MEMBERS

CONVENOR

Ii

K. VENKATACHALAMDirectorCentral Soil and Materials Research Station

G.L. JAVAChief Engineer (Designs)Sardar Sarovar Narmada Nigam Ltd.Narmada Project (Dam & Power House)

M. GOPALAKRISHNANChief Engineer, Designs (N& W) Central Water Commission

A.R.G. RAOSecretary & Treasurer, INCOLD and

Advisor, Central Board of Irrigation and Power

E. SUNDARAIYAChief Engineer, (Retd.)Central Water Commission

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N. VISVANATHANDirector (Technical)

National Hydroelectric Power Corporation Ltd. .

SAFETY INSPECTION, REVIEW OF HYDROLOGY, SPILLWAY CAPACITY AND FREE BOARD