بررسی روش های تعیین حریم حفاظتی با استفاده از مدل تحلیلی WhAEM2000 در چاه های شرب آبخوان دامنه-داران

نوع مقاله: مقاله پژوهشی

نویسندگان

1 استاد/ گروه مهندسی آب، دانشکده کشاورزی، دانشگاه صنعتی اصفهان

2 دانش آموخته کارشناسی ارشد /مهندسی منابع آب، گروه مهندسی آب، دانشکده کشاورزی، دانشگاه صنعتی اصفهان

3 استادیار /بخش فنی و مهندسی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان مرکزی، سازمان تحقیقات، آموزش و ترویج کشاورزی، اراک، ایران

4 استادیار /گروه مهندسی آب، دانشکده کشاورزی، دانشگاه بوعلی سینا همدان

چکیده

در اغلب مناطق کشور قسمت قابل ملاحظه‌ای از آب شرب به وسیله چاه‌ها و از منابع آب زیرزمینی تامین می‌شود. منابع مورد استفاده برای تامین آب شرب شهرها همواره در معرض تهدید آلاینده‌های مختلف می‌باشند. حفاظت کیفی این منابع، امروزه از دغدغه‌های فکری متولیان تامین و توزیع آب شرب محسوب می‌شود. بنابراین محاسبه دقیق حریم حفاظتی دارای اهمیت بسیار است، زیرا اعمال حریم کوچک‌تر خطر آلودگی آب چاه را بالا برده و حریم بزرگ‌تر اتلاف سرمایه را به دنبال خواهد داشت. در این مطالعه به کمک مدل WhAEM2000 با روش‌های مختلف به تعیین حریم حفاظتی چاه‌های شرب آبخوان دامنه-داران در استان اصفهان پرداخته شد. نتایج نشان داد روش المان تحلیلی محدوده‌ای محافظه کارانه‌تر از روش شعاع ثابت محاسبه شده ارائه می‌دهد، به این ترتیب می‌توان سه ناحیه حفاظتی فوری، اجباری و حمایتی چاه‌‌های این منطقه را با این روش و به ترتیب با سه زمان انتقال 2، 5 و 10 سال تعیین نمود. بر این اساس حریم حفاظت اجباری برای چاه‌های شرب این منطقه از 15 هکتار برای چاه شماره 2 دامنه تا 25 هکتار برای چاه شماره 1 و2 داران در جهت جریان آب زیرزمینی، متغیر بود.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Studying different method of wellhead protection area delineation using WhAEM2000 analytic model in drinking wells of Damaneh- Daran aquifer

نویسندگان [English]

  • J. Abedi koupai 1
  • N. Zamani 2
  • M. Goodarzi 3
  • S. Akhavan 4
1 Professor, Department of Water Engineering, College of Agriculture, Isfahan University of Technology, Isfahan, Iran.
2 M.Sc. Graduate of Water Recourses Engineering, Department of Water Engineering, College of Agriculture, Isfahan University of Technology, Isfahan, Iran
3 Assistant Professor, Agricultural Engineering Research Department, Markazi Agricultural and Natural Resources Research and Education Center, AREEO, Arak, Iran
4 Assistant Professor, Department of Water Engineering, College of Agriculture, Bu-Ali Sina University, Hamedan, Iran.
چکیده [English]

In most parts of the country a considerable part of the drinking water are supplied by wells and groundwater resources. Water resources which used to supply drinking water are always exposed to different pollutants. Groundwater protection is one of the major concern for decision-makers that supply and distribute drinking water. Therefore, precise calculation of wellhead protection areas is very important, because performing smaller area raises the risk of contamination of wells and considering bigger areas causes disinvestment and capital losses. In this study, by using WhAEM2000 and different methods, wellhead protection area in Damaneh–Daran aquifer of Isfahan province, were estimated. The results indicate that protection area with analytic element method is more conservative than calculated fixed radius method. Thus for emergency, essential and supportive protection areas, 2, 5 and 10 years, travel times may be used, respectively. Accordingly, essential protection area of drinking wells in this region is varying from 15 to 25 hectares for well number 2 of Damaneh and Daran’s number 1 and 2 wells in the direction of groundwater flow, respectively.

کلیدواژه‌ها [English]

  • drinking well
  • protection area
  • analytic method
  • volumetric method
  • essential protection
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