Water Molecules and Silicate Grains Kum tanesi Su molekulu Base image modified by jfh (08/25/01) from: CTE0510.bmp © 1998 Tasa Graphic Arts. YERALTI SUYU (GROUNDWATER)
There is a strong affinity for water molecules (H 2 O) to covalently bond with silicate grains (SiO 2 ). Kum tanesi Su molekulu Base image modified by jfh (08/25/01) from: CTE0510.bmp © 1998 Tasa Graphic Arts.
Water molecules tend to cling to silicate grains. Kum tanesi Su molekulu Base image modified by jfh (08/25/01) from: CTE0510.bmp © 1998 Tasa Graphic Arts.
As water molecules accumulate... Kum tanesi Su molekulu Base image modified by jfh (08/25/01) from: CTE0510.bmp © 1998 Tasa Graphic Arts.
... each molecule... Kum tanesi Su molekulu Base image modified by jfh (08/25/01) from: CTE0510.bmp © 1998 Tasa Graphic Arts.
... responds to inter-atomic forces and Yercekimi. Kum tanesi Su molekulu Base image modified by jfh (08/25/01) from: CTE0510.bmp © 1998 Tasa Graphic Arts. Yercekimi
Su Kabi Ince tubu suyun icine daldir...
Su Kabi Kapilari kuvvetlerden dolayi su tupte yukselmeye baslar
Su Kabi Su ince tupte yukseldi. Ince cam tup (SiO 2 )
Su Ince Tup (SiO 2 )
Su ve cam arasindaki etkilesimden dolayi molekuller arasi cekim kuvvetiyle su cam duvarinda yukselir-tutulur
Yercekimi ile asagi cekilir YercekimiYercekimi Yercekimi
1) T 1 zamanindaki azalan su yuksekligi
2) T 2 anindaki azalan su yuksekligi
Creating coupled unconfined and confined aquifers.
Monitoring well fully-penetrating an unconfined aquifer.
Monitoring well fully-penetrating a confined aquifer.
The storage properties of unconfined aquifers are usually dominated by gravity drainage. Storage in an Unconfined Aquifer
The storage properties of unconfined aquifers are usually dominated by gravity drainage. Define Specific Yield. Storage in an Unconfined Aquifer
Define Specific Storage. The storage properties of confined aquifers are usually dominated by elastic effects. Storage in a Confined Aquifer
We “pressurize” the “aquifer”.
Storage in a Confined Aquifer We “pressurize” the “aquifer”.
Storage in a Confined Aquifer Release some water: VwVw
Storage in a Confined Aquifer Define Specific Storage.
Details on the geometry of drawdown and the “cone of depression”.
Scenario: Well 50 gpm from a confined aquifer having these parameters: An Animation:
We will reconstruct the “cone of depression” at various times-after-start-of-discharge.
View drawdown again
Scenario: Well 50 gpm from a confined aquifer having these parameters:
We will reconstruct the “cone of depression” in plan view at various times-after-start-of-discharge.
View drawdown again
Note that the cone of depression spreads regularly when the time steps are “quasi-logarithmic”.
Effects of a Discharging Well on the Hydraulic Head of an Aquifer.
Unconfined Aquifer Compare drawdown in confined and unconfined aquifers.
Unconfined Aquifer Unconfined Aquifer h1h1 h2h2 h r1r1 r r2r2
Serbest Yuzeyli (Basincsiz) bir akiferdeki kuyu
Confined Aquifer m r1r1 r r2r2 h1h1 h2h2 h
Basincli bir akiferdeki kuyu T =m*K T= iletim kapasitesi
30 cm yaricapli bir kuyu 35 m kalinlikta bir akiferde 0.02 m3/s su cekmektedir. Pompaja uzun bir sure devam edildikten sonra pompaj kuyusunundan 17 ve 48 m uzakliktaki gozleme kuyularindan su yuzeyinin 3.6 ve 2.2 m alcaldigi gorulmustur. Zeminin iletim kapasitesini ve hidrolik iletkenligini hesaplayiniz. Poppaj kuyusunda azalma ne kadardir..
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