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توسعه و بهینهسازی هندسه کانال رودخانه زایندهرود با استفاده از مدلسازی هیدرولیکی و الگوریتم بهینهسازی پرنده منشی | ||
| تحقیقات آب و خاک ایران | ||
| دوره 56، شماره 9، آذر 1404، صفحه 2593-2612 اصل مقاله (2.38 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ijswr.2025.398207.669972 | ||
| نویسندگان | ||
| محمد مهدی ملکپور* 1؛ محمد مهدی احمدی2؛ کورش قادری2؛ یوسف رجبی زاده2 | ||
| 1گروه مهندسی آب، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان، کرمان، ایران | ||
| 2گروه مهندسی آب، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان، کرمان، ایران. | ||
| چکیده | ||
| هندسه مقطع رودخانه و تغییر شکل آن یکی از مسائل مهم و تاثیرگذار در زمینه مهندسی آب و رودخانه بوده و تاثیر مستقیم بر مدیریت، سلامت و جریان رودخانه دارد. دستیابی به شکل بهینه مقطع رودخانه از جمله مهمترین اقدامات سازهای برای مدیریت رودخانه بوده که به کنترل سیل و کاهش تلفات جانی و مالی میانجامد. در این مطالعه، به منظور استخراج پارامترهای هندسی مقاطع عرضی و بررسی شرایط هیدرولیکی جریان، از نرمافزار HEC-RAS برای رودخانه زایندهرود در استان اصفهان استفاده شد. برای تعیین هندسه بهینه مقاطع عرضی رودخانه، الگوریتم بهینهسازی پرنده منشی (SBOA) به کار گرفته شد که هدف آن، حداکثرسازی حجم لایروبی در عین حفظ پایداری هیدرولیکی بوده است. برای ارزیابی میزان انحراف هر مقطع با حالت بهینه خود، شاخص مقطع بهینه (OCI) مورد استفاده قرار گرفت تا مقدار عددی انحراف هر مقطع از وضعیت بهینه مشخص گردد. نتایج نشان داد که پس از بهینهسازی، مساحت مقاطع عرضی به طور کلی افزایش یافته و انحراف از هندسه بهینه در مقاطع پاییندست بیشتر بوده است. با تغییر مقدار شاخص OCI بین %1 تا %53، روند افزایشی آن از بالادست به پاییندست مشهود بوده که بیانگر نیاز بیشتر به اصلاح مقطع در مقاطع پاییندست است. در نهایت، این رویکرد بهینهسازی عملکرد مؤثری از خود نشان داد و ظرفیت آبگذری رودخانه را پس از بهینهسازی تا %89/28 افزایش داد. | ||
| کلیدواژهها | ||
| رودخانه زایندهرود؛ شاخص مقطع بهینه (OCI)؛ شبیهسازی هیدرولیکی؛ لایروبی؛ HEC-RAS | ||
| عنوان مقاله [English] | ||
| Enhancement and Optimization of Zayandehrud River Channel Geometry Using Hydraulic Modeling and Secretary Bird Optimization Algorithm | ||
| نویسندگان [English] | ||
| Mohammad Mahdi Malekpour1؛ Mohammad Mehdi Ahmadi2؛ Kourosh Qaderi2؛ Yousef Rajabizadeh2 | ||
| 1Department of Water Engineering, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran. | ||
| 2Department of Water Engineering, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran. | ||
| چکیده [English] | ||
| The geometry of a river cross-section and its morphological changes are among the most important and influential issues in water and river engineering, having a direct impact on the management, health, and flow of the river. Achieving an optimal river cross-section shape is one of the most important structural measures in river management, contributing to flood control and the reduction of human and financial losses. To obtain geometric parameters on cross-sections and hydraulic conditions of the flow, the HEC-RAS software was used on the Zayandehrud River in Isfahan. To determine the optimal river cross-section geometry, the Secretary Bird Optimization Algorithm (SBOA) was implemented. The approach of this study aimed to achieve a maximum dredging volume while maintaining hydraulic stability in the river channel. Then, the optimum cross-section index (OCI), which displays the numerical value of the river cross-section according to its optimal condition, was used to evaluate river cross-sections in their optimal state. Based on the results, the area of the optimized cross-sections gradually increased, and the observed area was far from the optimal geometry towards the downstream. The OCI value was changed between 1% and 53% and also increased from upstream to downstream, indicating a greater need for channel modification downstream. Ultimately, the optimization approach proved highly effective, enhancing the river’s watercourse capacity by 28.89% post-optimization. | ||
| کلیدواژهها [English] | ||
| Dredging, HEC-RAS, Hydraulic simulation, Optimum cross-section index (OCI), Zayandehrud River | ||
| مراجع | ||
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