شبیه سازی دو بعدی حرکت آب در خاک با استفاده از روش حجم محدود با تاکید بر زهکش های زیرسطحی همسطح و غیر هم سطح

نوع مقاله : علمی - پژوهشی

نویسندگان

1 دانشجوی دکتری ژئوتکنیک، دانشکده مهندسی، دانشگاه رازی، کرمانشاه، ایران

2 دانشیار، دانشکده فنی مهندسی، دانشگاه رازی، کرمانشاه، ایران

3 دانشیار ، دانشکدۀ مهندسی آب ،دانشگاه رازی، کرمانشاه، ایران

چکیده

هدف از انجام این تحقیق شبیه سازی نزدیک به واقعیت نحوه حرکت آب در خاک در مسائل مهندسی ژئوتکنیک که از اهمیت و جایگاه خاصی برخوردار است، می باشد. در طول سالیان گذشته روش های عددی متعددی برای حل معادله عمومی جریان آب در خاک ارائه شده، اما در این پژوهش سعی بر آن است که با استفاده از معادله ریچارد و تکنیک منفصل سازی کرنک- نیکلسون و روش عددی حجم محدود، حرکت آب در خاک مورد تجزیه و تحلیل قرار گیرد. به همین منظور دو مسئله ی پرکاربرد و مهم مورد بررسی قرار گرفته است. در مسئله اول برآورد نحوه حرکت آب پشت دیواره گود در مناطقی که سطح آب زیرزمینی بالاست و در مسئله دوم چگونگی حرکت آب بین دو زهکش زیرسطحی هم عمق وقتی که سطح ایستابی بر اثر بارندگی بالا می آید، بررسی می شود. برای اطمینان از عملکرد مناسب، مسئله اول با استفاده از نرم افزار اجزای محدود Seep 2D که از فرمول بندی المان محدود تبعیت می کند، شبیه سازی شده است. مقایسه نتایج حاصل از شبیه سازی نرم افزار Seep 2D با نتایج پژوهش حاضر صحت عملکرد رویه پژوهش حاضر را تایید می کند.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Two-dimensional simulation of water movement in soil in the geotechnical engineering using finite volume method.

نویسندگان [English]

  • afshin ghobadian 1
  • Mohammad Sharifipour 2
  • rasoul ghobadian 3
1 Geotechnical Ph.D candidate, Department of civil Engineering, Razi University, Kermanshah, Iran
2 Associate Professor, Department of Civil Engineering, Razi University, Kermanshah, Iran
3 Associate Professor, Department of Water Engineering, Razi University, Kermanshah, Iran
چکیده [English]

The purpose of this research is to simulate close to reality how water moves in the soil in geotechnical engineering issues, which has a special importance and position. Over the years, several numerical methods have been proposed to solve the general equation of water flow in the soil, but in this study has been tried to use the Richard equation and the Crank-Nicholson separation technique and the finite volume numerical method to move water in Soil to be analyzed. For this purpose, two widely used and important issues have been examined. In the first problem, estimating how water moves behind the excavation wall in areas where the groundwater level is high, and in the second problem, how water moves between two subsurface drains at the same depth when the water level rises due to rainfall.

کلیدواژه‌ها [English]

  • Richard equation
  • Crank-Nicholson method
  • finite volume method
  • Seep 2D
  • subsurface drains
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