Determining The Critical Degree of Reservoir Lifetime for The Saguling Reservoir Based on The Sediment Inflow Simulation
Abstract: This study aims to
find out the relationship between the critical degree of reservoir lifetime and
sediment inflow. The critical degree of reservoir lifetime is defined as the
ratio between the designated lifetime of the reservoir and its effective
lifetime. The effective lifetime of a reservoir is affected by the amount of
sediment flowing into the reservoir and trap efficiency. Soil and Water
Assessment Tool(SWAT) version 2005 model was incorporated into this study to
simulate hydrological processes taking place in the catchment. The reliability
of of SWAT model depends greatly on the data availability and some parameter
adjustments. From the calibration and validation results on monthly data, the
model is considerably of good performance. The modeling results revealed that
the mean sediment yield is 235.86 ton/ha/year, and the mean sediment inflow
into the reservoir is 5,102,000 tons per year which is equivalent to 3,836,090
m3per year resulting in 43.66 years of the reservoir lifetime (21.66 years
remaining) which corresponds to the critical degree of 2.29 The graph plotting
the values of the sediment inflow and the critical degree ofreservoir lifetime
reveals a linear relationship.
Author: Bakhtiar
Journal Code: jptsipilgg100008
