Experimental and numerical investigation of piping in uniform embankment dam with weak layer at the upper region için kapak resmi
Experimental and numerical investigation of piping in uniform embankment dam with weak layer at the upper region
Başlık:
Experimental and numerical investigation of piping in uniform embankment dam with weak layer at the upper region
Yazar:
Okan, Merve, author.
Yazar Ek Girişi:
Fiziksel Tanımlama:
xiii, 89 leaves: charts;+ 1 computer laser optical disc.
Özet:
From the past to nowadays, earth-fill dams have been built thanks to their advantages, however, piping is a problem that earth-fill dams can experience and then fail. While there are many studies about the overtopping failures of the dams, there are not too many surveys about dam failures due to piping. Dams having a height of 0.6 m, a bottom width of 2 m, and a crest width of 0.20 m were built in a channel of 1 m wide, 0.81 m high and 6.14 m long. 3 different scenarios have been created and the evolution of dam failure resulting from seepage at the dam was recorded by six cameras located at different locations. In the closed system, water was pumped from the lower reservoir to the upper channel. The dam was constructed by using a mixture consisting of 85 % sand and 15 % clay. A circular tunnel with a diameter of 2 cm was created at the middle or corner of the dam according to the scenario and at 6 cm below the dam crest. The breach areas at different time instants at upstream and downstream sides are determined by using the Gauss Area calculation method and by image processing, and then it has been found that methods give close values to each other. Breach discharge and time-varied velocity values were determined by using the continuity equation. Empirical relations were intended to be derived for the breach flow rate and empirical relations represented in the literature were trialed by using experimental findings.
Konu Başlığı:
Tek Biçim Eser Adı:
Thesis (Master)--İzmir Institute of Technology:Civil Engineering.

İzmir Institute of Technology: Civil Engineering--Thesis (Master)
Elektronik Erişim:
Access to Electronic Versiyon.
Ayırtma: Copies: