نوع مقاله : مقاله پژوهشی
نویسندگان
گروه مهندسی آب، دانشکده فناوری کشاورزی ابوریحان، دانشگاه تهران، تهران، ایران.
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
This study introduces a practical, data-driven framework for assessing surface water delivery failure risk in irrigation districts exposed to inflow fluctuations at diversion dams. The framework evaluates the vulnerability of manual standard operating procedures using a dynamic hydraulic-operational simulation model developed in MATLAB based on the Integrator–Delay model and manual SOP rules. Risk probability is estimated from historical diversion-flow records through frequency analysis. Vulnerability is quantified using a demand–delivery indicator that compares delivered water with allocated water rights. Risk consequence is represented by an integrated PCA-based index derived from adequacy, dependability, and efficiency indicators. The framework was applied to the Mahyar–Jarghooyeh Irrigation District in arid central Iran, including 659 irrigated units. Results indicate that under normal conditions, more than 90% of the district remains below a risk value of 0.4%. Under low fluctuation conditions, 30–35% of units show risk values between 1.5% and 3%, while 15–20% exceed 3%. Under moderate fluctuations, 60–80% of units fall within the 4–10% risk range. Under severe fluctuations, risk values exceed 60% across 50–60% of the district, and approximately 85% of units fall within the 40–100% range. The spatial results reveal a transition from localized risk under low-stress conditions to widespread systemic vulnerability under severe inflow fluctuations. The proposed framework can support revision of manual operating rules, targeted monitoring, and spatially explicit risk management in surface-water-dependent irrigation districts.
کلیدواژهها [English]