ارزیابی آلودگی آب‌های زیرزمینی حاصل از استخراج شن و ماسه در استخرهای ترسیبی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار گروه مهندسی نقشه‌‌برداری، دانشکده مهندسی علوم زمین، دانشگاه صنعتی اراک، ایران

2 دانشجوی دکتری جغرافیا، دانشکده جغرافیا، دانشگاه مونترال، مونترال، کانادا

چکیده

به دلیل قرارگیری سفره‌‌های آب زیرزمینی در زیر سـطح معادن و کارخانه‌های تولید شن و ماسه، بررسی میزان تاثیر این معادن بر آلایندگی منابع آب زیرزمینی بسیار حیاتی است. هدف اصلی این تحقیق شناسایی و ارزیابی آلودگی آب‌های زیرزمینی حاصل از استخراج و شستشوی شن و ماسه در استخرهای ترسیبی واقع در معادن شهر شهریار و شهر قدس است. بررسی‌‌های صورت‌‌گرفته نشان می‌‌دهد که تاکنون مطالعه‌‌ای بر روی آلودگی آب‌های زیرزمینی بر اثر استخراج و شستشوی شن و ماسه در منطقه‌‌ی مطالعاتی صورت نگرفته است. تحقیق حاضر در سه مرحله‌‌ی آماده‌‌سازی داده‌‌ها، تهیه‌‌ی نقشه‌‌ی پیوسته از پارامترهای کیفی آب‌‌های زیرزمینی با روش کریجینگ ساده و محاسبه‌‌ی رابطه ‌‌و ضریب همبستگی مکانی بین منطقه‌‌ی معادن و پارامترهای کیفی انجام شد. نتایج نشان می‌‌دهد که میزان بی‌کربنات، کربنات، نیترات، سدیم، پتاسیم، کلر، منیزیم و اسیدیته آب‌های زیرزمینی در منطقه در حد مجاز است، اما میزان سولفات، ضریب هدایت الکتریکی و مقدار کل مواد جامد حل‌‌شده (TDS) آب زیرزمینی در منطقه‌‌ی مورد مطالعه بیشتر از حد مجاز است. ضریب همبستگی مکانی بین فاصله از منطقه‌‌ی برداشت شن و ماسه با مورد بیان شده به ترتیب 53/0-، 56/0- و 61/0- بود، که مبین وجود رابطه بین این سه پارامتر و برداشت شن و ماسه است.

کلیدواژه‌ها

عنوان مقاله [English]

Evaluation of Groundwater Contamination Caused by Extraction of Sand and Gravel in Pools

نویسندگان [English]

  • Navid Hooshangi 1
  • Navid Mahdizadeh Gharakhanlou 2
1 Assist. Profe, Department of Surveying Engineering, College of Earth Sciences Engineering, Arak University of Technology, Arak, Iran
2 Laboratory of Environmental Geosimulation (LEDGE), Department of Geography, University of Montreal, Montréal, Canada
چکیده [English]

Assessing the effect of sand and gravel harvesting on groundwater resources is of great importance due to being situated of underground aquifers below the surface of mines and sand production factories. The main objective of this study is to identify and evaluate the pollution of the groundwater caused by the extraction of sand and gravel in sedimented pools located in the mines of Shahriar and Qods cities. Our research indicated that so far no study has been carried out on groundwater contamination caused by the extraction as well as washing of sand and gravel. The present study was conducted in three phases: data preparation, creation of a continuous map of groundwater contamination by Simple Kriging method, and the detection of relationships and spatial correlations between qualitative parameters and gravel mines. The results indicated that levels of bicarbonate, carbonate, nitrate, sodium, potassium, chlorine, magnesium, and acidity pollution parameters of groundwater are desirable, whereas the amount of sulfate, electrical conductivity, and Total Dissolved Solids (TDS) of groundwater in the study area are higher than the standard level. The values obtained from the spatial correlation between the distance from the sand and gravel harvesting region and sulfate, electrical conductivity, as well as TDS were -0.53, -0.56, and -0.66, respectively. These values demonstrate the high correlation between these three parameters and the extraction of sand and gravel.
 

کلیدواژه‌ها [English]

  • Groundwater
  • Interpolation
  • Geospatial information system
  • Spatial correlation
  • Shahr-e-Qods and Shahriar

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پژوهش های محیط زیست
دوره 12، شماره 24
مجله پژوهشی
اسفند 1400
صفحه 171-182

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