Guidelines for Safety Inspection of Dams - Central Water Commission

More documents

Recommendations

Info

6. RESERVOIR The following features of the reservoir should be examined to determine to what extent the water impounded by the dam would constitute a danger to the safety of the dam or a hazard to human life or property. (a) Shore Line The land forms around the reservoir should be examined for indications of major active or inactive landslide areas and to determine susceptibility of bedrock stratigraphy to massive landslides of sufficient magnitude to significantly reduce reservoir capacity or create waves that might overtop the dam. (b) Sedimentation The reservoir and drainage area should be examined for excessive sedimentation of recent developments in the drainage basin which could cause a sudden increase in sediment load thereby reducing the reservoir capacity, with attendant increase in maximum outflow and maximum pool elevation. (c) Potential Upstream Hazard Areas The reservoir area should be examined for features subject to potential back-water flooding resulting in loss of human life or property at reservoir levels upto the maximum water storage capacity including any surcharge storage. (d) Watershed Runoff Potential The drainage basin should be examined for any extensive alternations to the surface of the drainage basin such as changed agriculture practices, timber clearing, railroad or highway construction or real estate developments that might extensively affect the runoff characteristics. Upstream projects that could have impact on the safety of the dam should be identified. 42
7. DOWNSTREAM CHANNEL The channel immediately downstream of the dam should be examined for conditions which might impose any constraints on the operation of the dam or present any hazards to the safety of the dam. Development of the potential flooded area downstream of the dam should be assessed for compatibility with the hazard classification. 8. OPERATION AND MAINTENANCE FEATURES (a) Reservoir Regulation Plan The actual practices in regulating the reservoir and discharges under normal and emergency conditions should be examined to determine if they comply with the designed reservoir regulation plan and to assure that they do not constitute a danger to the safety of the dam or to human life or property. (b) Maintenance The maintenance of the operating facilities and features that pertain to the safety of the dam should be examined to determine the adequacy and quality of the maintenance procedures followed in maintaining the dam and facilities in safe operating condition. 43
Page 1 and 2: Government of India Ministry of Wat
Page 3 and 4: C O N T E N T S Chapter I Introduct
Page 5 and 6: 1.7 The guidelines outline principa
Page 7 and 8: category will be those located wher
Page 9 and 10: Purpose Chapter III PHASE I INVESTI
Page 11 and 12: should be considered in evaluating
Page 13 and 14: magnitude of recently adopted proba
Page 15 and 16: Scope Chapter IV PHASE II INVESTIGA
Page 17 and 18: storage, or lower when appropriate.
Page 19 and 20: 4.4.2 Stability assessment Stabilit
Page 21 and 22: The phenomenon of liquefaction of l
Page 23 and 24: Code No. I II Table III Minimum Des
Page 25 and 26: earth and silt loads; ice pressure,
Page 27 and 28: 4.4.4.5 Sliding pressures must be a
Page 29 and 30: When considering cross-bed shear th
Page 31 and 32: Chapter V REPORTS 5.1 The first rep
Page 33 and 34: Chapter VI ACKNOWLEDGEMENTS The fol
Page 35 and 36: 4. Area capacity curves 5. Elevatio
Page 37 and 38: (g) Seepage or Leakage The faces, a
Page 39 and 40: (b) Unlined Saddle Spillways Unline
Page 41: (a) Headwater and Tailwater Gauges
Page 45 and 46: A.2.5 Incrustation: A crust or coat
Page 47 and 48: that order; a layered structure in
Page 49 and 50: 2.4 Soils (1) Degradation (2) Disso
Page 51 and 52: 3.6 Stability, evidence and clues (
Page 53 and 54: 6. CONCRETE DAMS (Any of these obse
Page 55 and 56: (2) New vegetal growth (3) Seepage
Page 57 and 58: 8.8 Discharge carrier (open channel
Page 59: DAM SAFETY DIRECTORATE K.D.Thite -

Guidelines for Safety Inspection of Dams - Central Water Commission

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?