Ground water drawdown and land subsidence in Garmsar – Eyvanekey regions

Subject Areas :

N.  Ebadati ¹ (عضو هیت علمی دانشگاه آزاد اسلامی واحد اسلامشهر)

Received: 2016-09-06 Accepted : 2016-09-06 Published : 2010-06-22

Keywords: Groundwater, Garmsar, Eyvanekey . subsidence,

Abstract :

Garmsar and Eyvanekey plans are located south of central Alborz, between north central Iran,and to connect mountains with basins. the existence of alluvials of arise from Alborz mountion erosion created aquifers , geological investigation frm that evaporates and salt dooms ofupper and lower red formation cause of increase salinity and thus sulfat solution in alluviu ,this subject effect in increased porosity of sediments.Measurement of piezometric wells show ground water drawdown in the last 18 years , and thissubject on the basic of procedure exploitation in the 30 years is similar.Calculations based drawdown at least 27 meters of ground water table caused about 50-60cm subsidence , and 20-30 cm. subsidence due 20 years at next.Calculation ground water depletion produce surface cracks , deep fractures and damage builings . It necessary attention to water management and geological engineering specifcationsin contracture project at future.