Gaziantep's population growth and industrial expansion made drinking and industrial water needs critical. Developed to meet this demand, Düzbağ Transmission Line became Türkiye's second largest drinking water project.
Water and Environmental Projects
Gaziantep Düzbağ Drinking Water Transmission Line Project
Gaziantep Düzbağ Drinking Water Transmission Line Project
A high capacity drinking water line operating with low energy needs
Gaziantep Düzbağ Drinking Water Transmission Line Project
Gaziantep Düzbağ Drinking Water Transmission Line Project
Highlights
Location
Gaziantep, transmission line sourced from the Göksu River
Client/Employer Information
Devlet Su İşleri Genel Müdürlüğü (DSİ)
Project Scale
Türkiye's second largest drinking water supply project
Infrastructure Components
Annual water capacity of 173.6 million m³A 103 km water transmission mainA steel pipeline with a diameter of 2.6 mA 3.6 km tunnel with a diameter of 5.6 m
Function
Meeting drinking, domestic and industrial water needs of Gaziantep's center and industry
Project Duration
2017-2020
Key Feature
Advanced engineering using natural gradients to minimize energy consumption
The project conveys 173.6 million m³ annually from the Göksu River to central Gaziantep through a 103 km transmission line and 3.6 km tunnel.
Technologies and Construction Innovations Used
Project Stages and Solutions
Construction Stages
01
Construction of Göksu River water intake structures
02
Laying 103 km of steel pipes of 2.6 m diameter
03
Excavation of a 3.6 km tunnel of 5.6 m diameter
04
Installation of pressure balancing structures and connection lines
05
Testing and commissioning works
Solutions
High capacity excavation machinery and support systems overcame tunneling geology challenges.
Pipes were welded and assembled on site, then pressure and leak tested.
Strong site organization enabled phased commissioning.
Sustainability
Gravity water conveyance design minimized energy consumption.
Excavated materials were controlled to prevent environmental harm and used in filling.
Local materials and labor reduced logistical carbon emissions.
Durable steel pipes and coatings created sustainable infrastructure with low maintenance needs.
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