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More information about Siah Bisheh Pumped Storage Plant; |
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Siah Bisheh Pumped Storage Plant
Client: Ab Niroo Company (IWPC) Engineer:Moshanir Co. Contractor: Keyson Co. Instruments: Pullout device |
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Siah Bisheh Pumped Storage Project is located North of Iran in the Alborz mountains. Studies of construction of an underground pumped storage facility goes back to 2 decades ago. The construction of the project restarted with a fast paste in 2003. To control the quality of the work and the sufficiency of the support system, several instruments have been designed for the powerhouse and transformer caverns and other access tunnels. Another system that is used in Siah-Bisheh project is the bolt pullout device. The performance of bolting in the waterway tunnels was checked using a pullout setup which one example of such a test is depicted in stages in the following pictures.
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| The first stage is to fasten the coupling to the bolt |
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| Then the pulling rod is attached to the coupling. |
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| The tripod seat is than put on the pulling rod and |
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| The hydraulic jack is put on top of the seat. |
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After tightening the nut, the setup is complete and hydraulic pump is connected to the jack. pressurizing the jack continues till the bolt is loaded up to the test load.
A dial gauge sitting on a separate tripod is sometimes used to record the axial displacement of the bolt while loading. This information helps the designer to decide on the bolting pattern according to the bond capacity that is obtained during pullout test.
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