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Paper Information

Journal:   IRANIAN JOURNAL OF GEOLOGY   SUMMER 2006 , Volume 2 , Number 5; Page(s) 17 To 28.
 
Paper: 

HYDROGEOLOGY AND HYDROGEOCHEMISTRY OF WATER RESOURCES OF RUDBAR LORESTAN DAM SITE

 
 
Author(s):  SPANDAR RADIN, ZAKER SHABESTARI H.*
 
* DEPARTMENT OF GEOLOGY, FACULTY OF EARTH SCIENCES, SHAHID BEHESHTI UNIV., TEHRAN, IRAN
 
Abstract: 

Rudbar Lorestan Dam and Power Plant locates on the High Zagros structural zone, according to the geological map of Iran. The Dalan Formation, Permian age, forms the geological structure of dam body foundation and a portion of its reservoir. Meanwhile, outcrops of an Upper Cretaceous formation, called Sarvak Formation, are exposed out beside the Dalan Formation, due to effect of thrust faults. The main sources of Rudbar Lorestan river are precipitation and drainage of groundwater. The karstification process in carbonate sediments at the site was expected to be expanded well, due to geological and climate conditions. However, based on the evidences of karstic features, which could make a drainage network, have not seen. Both confined and unconfined aquifers present in the site. In this regard, presence of artesian boreholes is a good evidence for confined aquifer. The dominant types of ground water are calcic bicarbonate and sulfate, based on chemical analysis of 22 samples, collected from six sources of water at the site, In this manner, the types of water of the Rudbar river, Kish spring and outlet of access tunnel T2 are calcic bicarbonate, because of recharge from unconfined aquifers and short residence time. However, the type of water of artesian boreholes, i.e. TG-4 and RB-8, and inlet of the access tunnel T2, are calcic sulfate, based on contact of water with sulfate minerals and long residence time in confined aquifers.

 
Keyword(s): GROUNDWATER, HYDROGEOCHEMISTRY, KARSTIC, RUDBAR LORESTAN
 
References: 
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