ارزیابی هیدرولیکی شبکه توزیع آب شهر صالح‌آباد (استان ایلام) باهدف نشت‌یابی شبکه و کاهش هدررفت آب

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد، گروه مهندسی آب، دانشکده کشاورزی، دانشگاه ایلام، ایلام، ایران

2 استادیار، گروه مهندسی آب، دانشکده کشاورزی، دانشگاه ایلام، ایلام، ایران

3 معاونت بهره برداری و توسعه آب ، شرکت آب و فاضلاب استان ایلام، ایلام، ایران

چکیده

با توجه به خشکسالی‌های اخیر و کاهش سطح سفره آب‌های زیرزمینی، مدیریت منابع آب یکی از مهم‌ترین موضوعاتی است که موردتوجه مسئولین و کارشناسان این حوزه قرارگرفته است. در این مطالعه برای کاهش شکستگی و هدر رفت شبکه توزیع آب شهر صالح‌آباد (مقایسه داده‌های تولید آب و مصرف مشترکین نشان داد که در این شبکه بیش از 60 درصد هدر رفت آب وجود دارد) بررسی‌های میدانی، فشارسنجی و نشت‌یابی و تحلیل هیدرولیکی با تلفیق نرم‌افزارهای AutoCAD، WaterGEMS و GIS انجام گرفت. شبیه‌سازی شبکه توزیع نشان داد فشار در بیشتر مناطق شهر بین 35 تا 55 متر آب است. با کمک نرم‌افزار WaterGEMS، مناطقی از شبکه که دارای فشار بیش از 50 متر آب بود تعیین و با بررسی‌های میدانی و استفاده از روش بستن شیرهای کشویی به‌صورت پله‌ای در مناطق مذکور، 6 نقطه به‌عنوان مناطق پر ریسک ازنظر نشت شناسایی شد. در ادامه توسط دستگاه نشت‌یاب، 3 مورد شکستگی شناسایی و نسبت به رفع آن‌ها اقدام شد. دبی سنجی مجدد شبکه کاهش 20 درصدی میزان هدر رفت را نشان داد. با توجه به بافت شهری و توپوگرافی منطقه پیشنهاد گردید با نصب شیر فشارشکن در نقاط بحرانی شبکه، فشار شبکه به 16 تا 30 متر کاهش یابد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Hydraulic evaluation of water distribution network of Salehabad city (Ilam province) in order to detect network leakage and reduce water loss

نویسندگان [English]

  • Hamed Abdollahi 1
  • Jafar Mamizadeh 2
  • Reza Rezaei 3
1 M.Sc. Student, Department of Water Engineering, Faculty of Agriculture, Ilam University, Ilam, Iran.
2 Assistant Professor, Department of Water Engineering, Faculty of Agriculture, Ilam University, Ilam, Iran.
3 Deputy of Exploitation and Development of Water, Ilam Water and Sewerage company, Ilam, Iran.
چکیده [English]

Water resources management is one of the most important issues that are considered by experts in this field due to the reduction of rainfall and the reduction of groundwater levels. In this study, to reduce pipe fractures and water loss in Salehabad city (Comparison of water production and customer consumption data showed that there is more than 60 percent water loss in this network) field studies, pressure gauges, leak detection, and hydraulic analysis were performed by combining AutoCAD, WaterGEMS and GIS software. Points of the water distribution network that had more than 50 mH2o pressure were identified and then by field studies and using the method of closing the gate valves as a step by step, 6 points were identified as high-risk points of leakage. Therefore, with the check of the areas by the leak detector, 3 cases of pipe fractures were found and the remeasurement showed that the repair of these pipe fractures had reduced water loss by 20 percent. Depending on the urban texture and topography of the area, it was suggested to reduce the network pressure to 16 to 30 mH2o by installing a pressure relief valve in critical points of the network.

کلیدواژه‌ها [English]

  • Field data
  • hydraulic analysis
  • Leakage
  • Water Distribution network
  • Watergems
  • Water loss
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