CIVILICA We Respect the Science
(ناشر تخصصی کنفرانسهای کشور / شماره مجوز انتشارات از وزارت فرهنگ و ارشاد اسلامی: ۸۹۷۱)

Quick Sand in Large Diameter Wells: Analytical and Numerical Analyses

عنوان مقاله: Quick Sand in Large Diameter Wells: Analytical and Numerical Analyses
شناسه (COI) مقاله: ICCE08_875
منتشر شده در هشتمین کنگره بین المللی مهندسی عمران در سال 1388
مشخصات نویسندگان مقاله:

M. Kompani-Zare - School of Agriculture, Shiraz University, Shiraz, Iran
N. Samani - Science Faculty, Shiraz University, Shiraz ۷۱۴۵۴, Iran
S. Behrooz-Kohenjani - Science Faculty, Shiraz University, Shiraz ۷۱۴۵۴, Iran

خلاصه مقاله:
Large diameter wells gaining water from the bottom are dug in the sandy and collapsible aquifers. When the vertical hydraulic gradient on their bottom reaches a critical value, quicksand occurs. Another difficulty encountered is drawdown in the wellbore and the drying up of the well. To overcome these problems, the flow around and beneath these wells is numerically simulated and the dimensionless drawdown-time and dimensionless vertical gradient-time curves are developed. It was found that the ratio of filling material thickness to well radius affect the shape of these type curves. The type curves may be used to design pumping rate and duration as well as well radius.

کلمات کلیدی:
Quicksand, Large diameter well, Vertical gradient

صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/62922/