Assessment of Mechanical Structures Sustainability in Boodejan Catchment

Nowadays, the status of water and soil resources is in a critical situation due to its excessive uses. Watershed management practices has been implemented in the field of natural resources to control and combat of these risks that are expected to provide the required performance for the expected time in the project. This research was done in Boodejan basin in Dehaghan of Esfahan province and its purpose was to assess the mechanical stability of structures were constructed at selected river basins. At first, field visits were conducted in the region and the structural characteristics and damages caused by them were registered and the relation between runoff and flood of basin were assessed with different returns period. Based on this evaluation, there were no degradation in two Lace-rock dams and scouring and the poor enforcement structures have been the demolition factors of structures in 39 stone and mortar dams with 34% and 17%, respectively. Due to the low lifetime of the structures, the signs of damage observed in them indicate the beginning of the destruction. If they are not repaired, they will face the problem in the future. In addition, the analysis the one of the topic structures showed that sliding, overturning and piping phenomena have not been observed based on maximum discharge and there was only possible the structural over stressing in the bed that may be due to its weight for over design.