Yaser Dara - Project manager in Ministry of Energy, Iran, Water Resources management Company
Ammar Dara - Iran, Faculty member of Department of Computer Engineering in Dareshahr Azad University

This article it was done to reach geotechnical properties at Jaydar Pump Station site. That is one of the water development projects for irrigation improvement in quality and quantities at Jaydar plain grounds with impure and pure area respectively 1935, 1755 Hectares. Geotechnical investigation done at site to purpose of reorganization the lithologhy, investigation the problematical soils potential, assessment to rock mass quality index (RQD), underground layers penetration, try for achievement the equation between RQD and Lugeon values by mathematical calculations in difference bore holes were drilled, correlation of Lugeon data and rock mass qualities, preparation the lithological sections, Lugeon numbers and ground behavior interpretation. This research shown the existence of gypsum and marl layers, expansive soils, very high penetration at upper layers that will be changed to low values in the deeper depths, poor to fair of average in RQD in the trend of exploration bore holes drilled.

Lithology, Gypsum, Marl, Expansive soils, Lugeon