Guidelines for Safety Inspection of Dams - Central Water Commission
Guidelines for Safety Inspection of Dams - Central Water Commission
Guidelines for Safety Inspection of Dams - Central Water Commission
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(2) New vegetal growth<br />
(3) Seepage and leakage<br />
(4) Boils<br />
(5) Saturation patterns on slopes, hillsides and in streambed<br />
(6) Depressions and sinkholes<br />
(7) Evidence <strong>of</strong> high escape gradients.<br />
7.4 Erosion control<br />
(1) Loss, displacement & deterioration <strong>of</strong> upstream face riprap,<br />
underlayment and downstream face slope protection.<br />
(2) Leaching<br />
7.5 Foundation<br />
(1) See 6.5 also<br />
(2) Consolidation<br />
(3) Liquefaction<br />
7.6 Other endangerments<br />
(1) Utility pressure conducts on, over or through embankments.<br />
(2) Diversion ditches along abutment hillsides.<br />
8 SPILLWAYS<br />
8.1 Approach channel<br />
(1) Obstructions<br />
(2) Slides slumps and cracks & cutslopes<br />
8.2 Log booms<br />
(1) Submergence<br />
(2) Uncleared accumulated drift<br />
(3) Parting<br />
(4) Loss <strong>of</strong> anchorage<br />
(5) Inadequate sleck <strong>for</strong> low reservoir stages.<br />
8.3 Hydraulic control structure<br />
(1) Stability<br />
(2) Retention <strong>of</strong> capacity rating<br />
(3) Erosion at toe<br />
(4) Unauthorized installations on crest, raising storage level and<br />
decreasing spilling capacity.<br />
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