Oran eşleştirme işleyişi ile sızdıran şerit akifer parametre tahmini

Öz

Bu çalışmada, Oran Eşleştirme İşleyişi (OEİ) adı verilen sızdıran şerit akiferinin hidrolojik parametrelerinin belirlenmesi için yeni bir tahmin yöntemi önerilmiştir. OEİ, parametre tahmin sürecini kolaylaştırmak için iki basit formül kullanır. Birinci formül, su düşümü-logaritmik zaman eğrisinin büküm noktasından bir kullanıcı tarafından belirlenen mesafe ile ayrılan iki farklı su düşüm ölçümünden sızdırma faktörünü verir. İkinci formül, kullanıcıların sızdırma faktöründen boyutsuz büküm noktasını bulmasını sağlar. Böylece, akifer parametreleri OEİ ile klasik eğri eşleştirme işleyişinden kaçınarak kolayca elde edilebilir. OEİ’nin kabiliyeti çeşitli ideal ve gürültü ile kirletilmiş hipotetik pompaj testi senaryoları ile çalışılmıştır. İncelenen durumdan elde edilen sonuçlar OEİ’nin hali hazırdaki mevcut yöntemlere iyi bir alternatif olarak değerlendirilebileceğini göstermektedir.

Anahtar Kelimeler

• Akifer parametreleri
• Yeraltı suları
• Ters problem
• Sızdıran akifer
• Parametre tahmini

Leaky strip aquifer parameter estimation by ratio matching process

Öz

In this study, a novel estimation method, called as Ratio Matching Process (RMP), was proposed to determine the hydrologic parameters of a leaky strip aquifer. RMP employs two simple formulations in order to simplify the parameter estimation procedure. The first formula gives the leakage factor from the site data by selecting two different timedrawdown measurements, which are separated by the user-specified distance from the inflection point of the drawdown vs logarithmic time curve. The second formula provides the users to find the dimensionless inflection point from the leakage factor. Thus, the aquifer parameters could be easily acquired with RMP by avoiding the classical curve matching process. The capability of RMP was studied with several hypothetical pumping test scenarios including ideal and noisecontaminated datasets. The results from the implemented cases indicate that RMP can be regarded as a good alternative to the available methods.

Anahtar Kelimeler

• Aquifer parameters
• Groundwater
• Inverse problem
• Leaky aquifer
• Parameter estimation

Kaynakça

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