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ارزیابی اثر تغذیۀ مصنوعی بر تعادل‌بخشی آبخوان با استفاده از شاخص پایداری | ||
| اکوهیدرولوژی | ||
| مقاله 25، دوره 4، شماره 4، دی 1396، صفحه 1241-1253 اصل مقاله (1.1 M) | ||
| نوع مقاله: پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ije.2017.234332.616 | ||
| نویسندگان | ||
| حمید کاردان مقدم1؛ محمد‌ابراهیم بنی‌حبیب* 2؛ سامان جوادی3 | ||
| 1دانشجوی دکتری منابع آب پردیس ابوریحان، دانشگاه تهران | ||
| 2دانشیار گروه مهندسی آبیاری و زهکشی پردیس ابوریحان، دانشگاه تهران | ||
| 3استادیار گروه مهندسی آبیاری و زهکشی پردیس ابوریحان، دانشگاه تهران | ||
| چکیده | ||
| برگشت تراز آب زیرزمینی به تراز مطلوب با استفاده از راهکارهای تعادل‌بخشی از اهداف اصلی سیاست‌گذاران آب کشور است. یکی از راهکارهای طرح یادشده، تغذیۀ مصنوعی است که به‌منظور کمی‌کردن میزان اثربخشی آن، با استفاده از شاخصهای پایداری در آبخوان ارزیابی شد. برای نخستین‌بار پایداری سیستم آب زیرزمینی، با استفاده از ترکیب سه شاخص اعتمادپذیری، آسیبپذیری و مطلوبیت و با درنظرگرفتن اثر سناریوی تغذیۀ مصنوعی ارزیابی شد. به این‌منظور با استفاده از مدل MODFLOW اثر تغذیۀ مصنوعی شوراب سیوجان بر وضعیت آبخوان بیرجند طی یک دورۀ نُه‌ساله شبیهسازی و پیش‌بینی وضعیت آبخوان تا افق 1404 در شرایط نرمال اقلیمی در سه سناریوی برداشت آب انجام گرفت. نتایج شبیهسازی نشان داد سیستم آبخوان در بخش انتهایی، که چاه مشاهدهای خوسف قرار دارد، با توجه به مسیر حرکت تغذیۀ آب زیرزمینی، اختلاف کم بین تراز مطلوب و تراز آب زیرزمینی و ضخامت کم ناحیۀ اشباع، بیشترین پایداری را به‌میزان 55 درصد داشته است. بررسی شاخصها در منطقه تحت تأثیر تغذیۀ مصنوعی در آبخوان نشان میدهد اجرای طرح تغذیۀ مصنوعی توانسته بین 21 تا 25 درصد با توجه به سناریوی کاهش، ثابت‌بودن برداشت و افزایش برداشت مقدار شاخص پایداری سیستم را بهبود دهد. شاخص ارائه‌شده در این تحقیق با توجه به قابلیت توزیعی‌بودن و امکان بررسی اثر سناریوهای مختلف، میتواند در سایر آبخوانها و در تصمیمگیری به کار برده شود. | ||
| کلیدواژه‌ها | ||
| آسیبپذیری؛ اعتمادپذیری؛ تغذیۀ مصنوعی؛ شاخص پایداری سیستم؛ مطلوبیت | ||
| عنوان مقاله [English] | ||
| Assessment of artificial recharge on aquifer restoring using sustainability index | ||
| نویسندگان [English] | ||
| Hamid Kardan Moghaddam1؛ Mohammad Ebrahim Banihabib2؛ Saman Javadi3 | ||
| 1Ph.D. student, Department of water engineering, College of Aburaihan, University of Tehran, Iran | ||
| 2Associate Professor, Department o of water engineering, College of Aburaihan, University of Tehran, Iran | ||
| 3Assistant Professor, Department of water engineering, College of Aburaihan, University of Tehran, Iran | ||
| چکیده [English] | ||
| One of the strategies, is conducting artificial recharge, which is required to be evaluated using sustainability indexes in order to quantify the effects. In this research, a new approach is utilized for evaluation of groundwater system sustainability, combining the indexes, reliability, vulnerability and desirability considering the effect of artificial recharge scenario. First, the effect of Shurab Sivjan artificial recharge project on Birjand aquifer is simulated for a nine-year period, projected to 1404 Hijri (2025 Gregorian) with normal climatic condition, using MODFLOW model. Simulation results show that aquifer system sustainability is higher in the downstream parts, where the Khusf observation well is located, justifying by the groundwater recharge flow direction, low difference between optimum and measured groundwater level, and thin saturated thickness with 55 percent. Evaluation of indexes over the aquifer shows that the artificial recharge project could enhance the system sustainability between 21 to 25 percent according to reduce, constant and increment discharge scenarios. The proposed index in this research can be utilized for the other aquifers as well as in decision-making, because of its ability to define in distributed manner and possibility of evaluating the effects of different scenarios. | ||
| کلیدواژه‌ها [English] | ||
| sustainability index, reliability, vulnerability, desirability, Artificial recharge | ||
| مراجع | ||
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