fa تعیین شماره منحنی و برآورد پتانسیل تولید رواناب حوضه آبخیز حصارک ژئومورفولوژی Geomorphology پژوهشي Research <div style="text-align: justify;"><strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">یکی از روش های برآورد ارتفاع رواناب، روش شماره منحنی (</span></span></span></strong><strong><span dir="LTR"><span style="color:black;"><span style="font-family:times new roman,serif;">CN</span></span></span></strong><strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">) است که نشانگر</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">رفتار</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">هیدرولوژیکی حوضه</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">است. </span></span></span></strong><strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">داده ها</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">و</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">اطلاعات</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">مورد</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">نیاز </span></span></span></strong><strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">از نقشه توپوگرافی1:25000 و نقشه زمین شناسی 1:100000 توسط سازمان زمین شناسی کشور استفاده شد</span></span></span></strong><strong><span dir="LTR"><span style="color:black;">.</span></span></strong><strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;"> از نرم افزار </span></span></span></strong><strong><span dir="LTR"><span style="color:black;"><span style="font-family:times new roman,serif;">SMADA</span></span></span></strong><strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;"> برای محاسبه </span></span></span></strong><strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">بارشهای</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">کوتاه</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">مدت در</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">دوره</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">بازگشت&shy;های</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">مختلف</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">و </span></span></span></strong><strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">از نرم افزار </span></span></span></strong><strong><span dir="LTR"><span style="color:black;"><span style="font-family:times new roman,serif;">GIS</span></span></span></strong> <strong><span dir="LTR"><span style="color:black;"><span style="font-family:times new roman,serif;">Arc </span></span></span></strong>&nbsp;<strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">برای تهیه </span></span></span></strong><strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">نقشه شماره منحنی با تلفیق نقشه های پوشش گیاهی، کاربری اراضی و گروه هیدرولوژیک خاک با استفاده از جدول </span></span></span></strong><strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">سازمان</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">حفاظت</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">خاک</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">آمریکا (</span></span></span></strong><strong><span dir="LTR"><span style="color:black;"><span style="font-family:times new roman,serif;">SCS</span></span></span></strong><strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">) استفاده گردید و سپس نقشه ارتفاع رواناب حوضه‌ حصارک تهیه شد. هدف از این مطالعه تعیین شماره منحنی و </span></span></span></strong><strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">برآورد</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">ضریب</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">رواناب</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">و حداکثر دبی اوج سیل با</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">استفاده</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">از</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">روش </span></span></span></strong><strong><span dir="LTR"><span style="color:black;"><span style="font-family:times new roman,serif;">SCS</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">در</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">حوضه</span></span></span></strong><strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;"> حصارک و پهنه بندی پتانسیل تولید رواناب در حوضه آبخیز می باشد. نتایج</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">تحقیق</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">نشان</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">داد</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">که</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">وضعیت هیدرولوژیکی اراضی</span></span></span></strong><strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;"> و گروه های</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">هیدرولوژیکی</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">خاک در</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">سطح</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">حوضه مهم ترین</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">پارامتر</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">تعیین کننده</span></span></span></strong><strong><span dir="LTR"><span style="color:black;"><span style="font-family:times new roman,serif;">CN</span></span></span></strong> &nbsp;<strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">بوده</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">و</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">بر</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">روی</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">رواناب</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">تأثیرگذار</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">است. بیشترین پتانسیل تولید رواناب در پایین دست حوضه است که با کاربری اراضی شهری مشخص شده است.</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">همچنین میانگین وزنی شماره منحنی‌های بدست آمده برای هر زیرحوضه نشان داد، در زیرحوضه چپ‌دره با شماره منحنی 88 و میانگین رواناب 28/15 میلیمتر بیشترین حجم رواناب، زیرحوضه دوچناران با شماره منحنی 89/3 و میانگین رواناب 24/54 میلیمتر و زیرحوضه تقاطع دو شاخه با شماره منحنی 90/1 و میانگین رواناب 17/36 میلیمتر کمترین حجم رواناب احتمالی و پتانسیل سیلخیزی را دارد.</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">اما به طور کلی پتانسیل تولید رواناب در این حوضه نسبتاً بالا می‌باشد. بیشترین</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">مقدار</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">شماره</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">منحنی</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">رواناب</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">در</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">شرایط</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">رطوبتی زیاد</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">در</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">منطقه</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">مورد</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">مطالعه</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">99</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">و</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">کمترین</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">مقدار</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">78</span></span></span></strong> <strong><span style="color:black;"><span style="font-family:b nazanin;"><span style="font-size:11.5pt;">است.</span></span></span></strong></div> <div style="text-align: justify;"></div> The process of precipitation &ndash; runoff of each basin, is influenced by hydrologic, geomorphology conditions, geological formation and vegetation. There are different methods in drainage basins. One way to estimate the runoff height is Curve Number (CN) method. That reperesents the hydrological behavior of basin. data were collected for statistics of climate and then topographic map of 1: 25000 and geological map of 1: 100000 by GSI was used. Smada software for calculate the short &ndash; term rainfall at different return periods. As well as Arc GIS software for mapping Curve Number by combining maps of land use, soil hydrological groups and moisture of soil with using the table of America Soil Conservation Service (SCS). And then modeling related in the GIS mappings of runoff height of Hesarak catchment was prepared. The aim of this study, was to determine Curve Number and estimate runoff coefficient and maximum discharge runoff with SCS method in various units catchment is. The results showed, hydrologic condition and soil hydrological groups are the most important parameters to determine the CN and affect on runoff. The most potential for runoff is in downstream of basin that specified with urban land use. Also average weight of Curve Numbers those obtained for each sub catchments, Chapdareh sub catchment (S2) with 88 Cure Number and mean of runoff 28.15 mm had the highest volume of runoff, Dochenaran sub catchment (S3) with 89.3 Curve Number and mean of runoff 24.54 mm and sub catchment of the twin branches (S1) with 90.1 Curve Number and mean of runoff&nbsp; 17.36 mm had The lowest amount of runoff probability and spill potential. But in general potential runoff in this basin is relatively high. The maximum amount of runoff Curve Number in condition of high humidity is 99 and 78 is the lowest. شماره منحنی, روش SCS, رواناب, Arc GIS, حوضه آبخیز حصارک Curve Number, SCS method, Runoff, Arc GIS, Hesarak catchment 133 150 http://jgs.khu.ac.ir/browse.php?a_code=A-10-3241-1&slc_lang=fa&sid=1 mohammad mahdi hoseinzadeh محمد مهدی حسین زاده m.hosenzade@gmail.com 10031947532846005473 10031947532846005473 No Shahid Beheshti University دانشگاه شهیدبهشتی کاظم نصرتی ka.nosrati@gmail.com 10031947532846005474 10031947532846005474 No Shahid Beheshti University دانشگاه شهیدبهشتی sepide imeni سپیده ایمنی Sepide.sbu@gmail.com 10031947532846005475 10031947532846005475 Yes Shahid Beheshti University دانشگاه شهیدبهشتی