کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6409833 1332874 2015 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hydraulic head response of a confined aquifer influenced by river stage fluctuations and mechanical loading
ترجمه فارسی عنوان
پاسخ سر هیدرولیک یک آبخوان محدود شده تحت تاثیر نوسانات مرحله رودخانه و بارگذاری مکانیکی
کلمات کلیدی
سر هیدرولیک، بارگیری مکانیکی، نوسانات مرحله رودخانه، انتشار هیدرولیکی، مدل سازی جریان،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
چکیده انگلیسی


- Incorporate mechanical loading in a stream-confined aquifer model.
- Assess the impact of mechanical loading to confined aquifer hydraulic head response.
- Test the effects of river stage rise/mechanical loading in real aquifer heads.
- Alert for the mistake of not invoking mechanical loading in confined aquifer studies.

SummaryThe response to river stage fluctuation of a drilled well penetrating a confined aquifer was simulated using a stream-aquifer interaction algorithm. Because the confined aquifer is overlaid by a water table aquifer, the algorithm was coupled with formulae used to correct the heads for mechanical loading. The coupling of stream-aquifer interaction and mechanical loading models was tried for the first time in this study. The test site was a drilled well installed on the Montalto Uffugo aquifer located at the Calabria University groundwater test field (Calabria region, south of Italy). This aquifer comprises a 44 m-thick sand bank bounded on bottom and top by clay layers and covered by a 7 m-thick sandy conglomerate, being adjacent to the Mavigliano River. Overall, the head changes caused by a river stage raise represented a contribution of 49.3-57.8% to the total head, while mechanical loading accounted for the remaining 50.7-32.2%. The loading was triggered by a sequence of short-spaced rainfall events lasting for a total of 167 days, which caused recharge to the unconfined aquifer thickening the water column by some 3.1 m.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hydrology - Volume 531, Part 3, December 2015, Pages 716-727
نویسندگان
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