نوع مقاله : مقاله پژوهشی
نویسندگان
1 مربی دانشکدة منابع طبیعی دانشگاه جیرفت
2 استاد دانشکدة منابع طبیعی دانشگاه تهران
3 دانشجوی دکتری بیابان‌زدایی دانشکدة منابع طبیعی دانشگاه تهران
چکیده
امروزه، طراحی سازة هیدرولیکی مناسب برای جلوگیری از خطرهای احتمالی سیلاب از اهمیت خاصی برخوردار است. یکی از پارامترهای ضروری در طراحی سازه‌های کنترل سیلاب پارامتر حداکثر بارش محتمل در پایة زمانی 24 ساعته است، که این بارش، طبق شرایط نهایی هر حوضه، در دورة بازگشت هزارساله رخ میدهد. این مطالعه در حوضة هلیل‌رود جیرفت به منظور صحت‌سنجی دو روش هرشفیلد در برآورد حداکثر بارش محتمل صورت گرفت. در این زمینه، نخست با استفاده از روش گشتاورهای خطی به تحلیل فراوانی سری داده‌های حداکثر بارش سالانه پرداخته و مقدار بارش در دورة بازگشت هزارساله استخراج شد و از آن برای مقایسه با مقادیر به‌دست‌آمده از روش‌های هرشفیلد استفاده شد. نتایج نشان داد داده‌های بارش به‌دست‌آمده از روش دوم هرشفیلد با مقادیر بارش استخراج‌شده از روش گشتاورهای خطی در دورة بازگشت هزارساله از همبستگی 87/0 برخوردار است. در نتیجه، روش مذکور روشی با درجة صحت بالا در برآورد حداکثر بارش محتمل در حوضة هلیل‌رود جیرفت شناخته شد. از نتایج این مطالعه می‌توان در سیستم پایش منطقه استفاده کرد.
کلیدواژه‌ها
عنوان مقاله [English]
Application of linear moment methods for Hershfild method (Case study Halilrud watershed)
نویسندگان [English]
- farshad soleimani sardou 1
- Ali Salagegh 2
- Mahdie Sanjari 3
- Ali Azare 3
1 Instructor, Department of Natural Resources, University of Jiroft
2 . Professor, Department of Natural Resources, University of Tehran
3 Assistant Professor, Department of Natural Resources, University of Tehran
چکیده [English]
Nowadays, designing hydraulic structures for flood damage mitigation has a significant importance in water engineering. One of the necessary parameters for the design of flood control measures is the probable maximum 24-hour precipitation in a 1000-year return period. This research was done using Jiroft Halilrud watershed data to evaluate Hershfild methods. Firstly, the maximum annual precipitation data series were used to do a frequency analysis using linear moments method to determine the maximum precipitation in 1000-year return period. Then this parameter was determined using the Hershfild method. The results showed a good agreement between the two methods according to correlation coefficient (0.87). The results of this research can be used for the monitoring system of the region
کلیدواژه‌ها [English]
- Hydraulic Structures
- maximum probable 24-hour precipitation
- linear moments
- Hershfild method
- Halilrud river basin
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