Laserfiche WebLink
<br />II' <br /> <br /> <br />001654 <br /> <br />Technical Memorandum No. NAV-8130-TM-98-1 <br />OUTLET WORKS DISCHARGE CAPACITIES - NAVAJO DAM <br /> <br />Table of Contents <br /> <br />~ <br /> <br />I. Purpose and Scope of Work ................................................. 1 <br /> <br />n. Hydraulic Design Considerations ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 <br /> <br />A. Main outlet works .................................................. 1 <br /> <br />B. Auxiliary outlet works ............................................... 5 <br /> <br />C. NID) canal outlet works .............................................. 7 <br /> <br />D. POVlrer plant ....................................................... 7 <br /> <br />E. Maximum discharge capacities for all features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 <br /> <br />. m. Hydraulic ]~odel Studies and Field Testing . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . 10 <br /> <br />A. Main outlet works ................................................. 10 <br /> <br />1. Abrasion damage . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . '. . . . . . . . 11 <br /> <br />2. Cavitation damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 <br />3. Gas supersaturation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 <br />4. Pipeline flow instability ........................................ 16 <br /> <br />B. Auxiliary outlet works .............................................. 17 <br />ll. Air slot modification .......................................... 17 <br />2. Gas supersaturation modifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 <br /> <br />. N. Current Condition of Mechanical Features .................................... 18 <br /> <br />A. Main outlet works ................................................. 18 <br />1. 6- by 13-foot Fixed-wheel gate .................................. 18 <br />2. 72-inch Hollow-jet valves ...................................... 20 <br />3. 72-inch Ring-follower gates. . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . 21 <br />4. Wye branch tie rods. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 <br /> <br />B. Auxiliary outlet works ..............................................23 <br />1. 4- by 4-foot Outlet gates .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 <br /> <br />., V. Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 <br />