Boussinesq denkleminin çözümüne bağlı olarak taban suyu seviyesi yüksekliğinin incelenmesi

Year 2018, Volume: 6 Issue: 2, 134 - 142, 28.12.2018

İmanverdi Ekberli , Coşkun Gülser

Abstract

Bu çalışmada geçirgen toprak katmanında Dupuit yaklaşımı ve Darcy yasasına bağlı olarak taban suyu seviyesindeki değişimin belirlenmesi için Boussinesq denkleminin ilave edilmesi ve çözümü açıklanmıştır. Yavaş (0.44 cm sa-1), oldukça yavaş (1.05 cm sa-1) ve orta (3.12 cm sa-1) hidrolik iletkenlik değerlerine sahip topraklara aynı hacimde su uygulanması durumunda, farklı toprak kesitlerinden farklı sürelerde oluşacak drenaj koşulları için taban suyu seviyesindeki değişimler hesaplanmıştır. Genel olarak taban suyu seviyesi, drenajın gerçekleştiği kesit mesafesinin daralması ile yükselmekte, kesit mesafesinin artması ile alçalmaktadır. Taban suyu seviyesindeki değişim drenaj süresi arttıkça aynı geçirgenlik sınıfı için sabit bir değere yaklaşmaktadır. Toprak ortamına ilave olunan su miktarına bağlı olarak taban suyu seviyesinin değişiminde, drenaj kesit mesafesinin, zamanın ve hidrolik iletkenliğin temel faktörler olduğu belirlenmiştir.

Keywords

Drenaj, Dupuit yaklaşımı, Darcy yasası, Boussinesq denklemi, iletkenlik

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