sediment and cavitation erosion studies through dam tunnels

دراسات التآكل الناجم عن الرسوبيات والتكهف عبر أنفاق السدود

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ID: 172959
2016
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Abstract
This paper presents results of sediment and cavitation erosion through Tunnel 2 and Tunnel 3 of Tarbela Dam in Pakistan. Main bend and main branch of Tunnel 2 and outlet 1 and outlet 3 of Tunnel 3 are concluded to be critical for cavitation and sediment erosion. Studies are also performed for increased sediments flow rate, concluding 5 kg/sec as the critical value for sudden increase in erosion rate density. Erosion rate is concluded to be the function of sediment flow rate and head condition. Particulate mass presently observed is reasonably low, hence presently not affecting the velocity and the flow field.
تقدم هذه الورقة البحثية نتائج التآكل الناتج عن الرواسب والتكهف عبر النفق 2 والنفق 3 في سد تاربيلا بباكستان. وخَلُصت الدراسة إلى أن المنعطف الرئيسي والفرع الرئيسي للنفق 2، والمخرج 1 والمخرج 3 للنفق 3، تُعد مواقع حرجة للتكهف والتآكل بالرواسب. كما أُجريت دراسات لمعدلات تدفق الرواسب المتزايدة، واستنتجت أن 5 كجم/ثانية هي القيمة الحرجة للزيادة المفاجئة في كثافة معدل التآكل. وتبيّن أن معدل التآكل دالةٌ لمعدل تدفق الرواسب وحالة الضاغط الهيدروليكي. وتُعد الكتلة الجسيمية المرصودة حاليًا منخفضة نسبيًا، ومن ثمّ فهي لا تؤثر في الوقت الحاضر على السرعة ومجال الجريان.
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abid2016journalsediment Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Muhammad Abid, Jamal Saeed, Hafiz Abdul Wajid
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Journal Plant foods for human nutrition (Dordrecht, Netherlands)
Year 2016
DOI
10.1155/2016/8645789
URL
http://dx.doi.org/10.1155/2016/8645789
Keywords
engineering (general) civil engineering (general)

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