ارزیابی زیست محیطی توسعه شهری و تعیین محل دفن نخاله های ساختمانی کلانشهر یزد

نویسندگان

1 استادیار گروه زمین‌شناسی، دانشکده علوم، دانشگاه پیام‌نور، تهران، ایران

2 دانشیار، گروه زمین شناسی، دانشکده علوم، دانشگاه پیام نور، تهران، ایران

3 دانش‌آموخته کارشناسی‌ارشد، گروه زمین‌شناسی، دانشکده علوم، دانشگاه پیام‌نور، تهران، ایران

چکیده

با توسعه روزافزون شهرنشینی، تولید عظیم نخاله­های ناشی از ساخت و تخریب به تهدیدی جدی برای توسعه پایدار شهرها تبدیل شده است. دفن آن­ها به عنوان متداول­ترین روش برای دفع زائدات ساختمانی محسوب می­گردد.؛ اگرچه تلاش­هایی در جهت استفاده مجدد و بازیافت نخاله­های ساختمانی انجام شده است. با توجه به هدف نهایی که یافتن مکانی با کمترین اثرات سوء زیست­محیطی بر منطقه و محیط طبیعی اطراف مدفن است، لذا تعیین مکان بهینه مدفن بهداشتی- مهندسی به روش مطلوب دارای مراحلی است که اجرای بهینه هر یک از آن­ها در نتیجه نهایی تأثیرگذار است. در این پژوهش با وجود پارامترهای متعدد در انتخاب مدفن، چهار معیار محیط زیست طبیعی، شرایط زمین­شناسی و هیدروژئولوژیکی، وضعیت عوامل اقتصادی و نحوه بهره­برداری منطقه به عنوان معیارهای اصلی در مکانیابی انتخاب گردیده و جهت مدیریت بهینه زمان، هزینه و اثرات پیچیده طرح، از ابزار قدرتمند سیستم اطلاعات جغرافیایی بهره گرفته شده ­است. جهت مطالعات مکان‌یابی بهینه مدفن نخاله­های ساختمانی شهر یزد 8 لایه اطلاعاتی جمع‌آوری و رقومی‌سازی نقشه‌ها انجام شد. با جمع‌آوری و ترکیب لایه‌های اطلاعاتی مورد نیاز جهت تعیین مناطق مناسب دفن نخاله ساختمانی کلانشهر یزد از روش تحلیل سلسله مراتبی استفاده شد. هر لایه اطلاعاتی و زیرلایه مربوطه وزن‌دهی و در نقشه نهایی با استفاده از لایه حریم، مناطق ممنوعه حذف شد. طبق نقشه نهایی 4 منطقه در رده کاملا مناسب واقع شد. از بین این 4 منطقه، محدوده‌ی 2 و 3 به علت قرار‌گیری در جهت باد غالب و انجام بازدید میدانی نهایی از مناطق حذف نموده و نهایتاً منطقه 1 و 2 (محل فعلی دفن) مناسب جهت دفن بهینه نخاله ساختمانی شهر یزد شناسایی و پیشنهاد می­گردد.

کلیدواژه‌ها

عنوان مقاله [English]

Environmental Assessment of Urban Development and Landfill Location for Construction Waste in Yazd Metropolis

نویسندگان [English]

  • J. Ghanei Ardekani 1
  • F. Ayati 2
  • A. Kashfi 3
1 Assist. Prof., Dept., of Geology, Faculty of Science, Payame Noor University, Tehran, Iran
2 Assoc. Prof., Dept., of Geology, Faculty of Science, Payame Noor University, Tehran, Iran
3 M. Sc. (graduated), Dept., of Geology, Faculty of Science, Payame Noor University, Tehran, Iran
چکیده [English]

With the rapid growth of urbanization, the massive production of construction and demolition waste has become a significant challenge to the sustainable development of cities. Landfilling, the most prevalent method of disposing of construction waste, remains widely used, despite ongoing efforts to promote the reuse and recycling of construction debris. The primary objective is to identify a location that minimizes environmental impacts on both the local area and its surrounding natural environment. Determining the optimal location for a sanitary-engineering landfill involves multiple stages, and the effective execution of each stage critically influences the overall outcome. This study focuses on four key criteria for selecting a landfill site: natural environmental conditions, geological and hydrogeological factors, economic considerations, and land-use patterns in the area. To optimize the management of time, cost, and the complex impacts associated with the project, Geographic Information Systems (GIS) were employed. In the case of Yazd, eight informational layers were gathered, and maps were digitized to facilitate optimal landfill site selection. After compiling and integrating the necessary data layers to identify suitable areas for construction waste disposal within the Yazd metropolitan area, the Analytic Hierarchy Process (AHP) was applied. Each data layer and its corresponding sub-layers were assigned weights, and restricted zones were excluded through the use of the privacy layer in the final map. Based on the final analysis, four areas were identified as highly suitable for landfill development. However, Zones 2 and 3 were excluded due to their location in the prevailing wind direction and the results of subsequent field visits. Ultimately, Areas 1 and 2 (the current landfill site) were determined to be the most suitable locations for optimal construction waste disposal in Yazd.

کلیدواژه‌ها [English]

  • Environmental Assessment
  • Location
  • Construction waste
  • Hierarchical Analysis
  • Yazd metropolis

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سابقه مقاله

  • تاریخ دریافت: 24 مهر 1403
  • تاریخ پذیرش: 16 بهمن 1403

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