Interpretation of Pumping Tests in Heterogeneous Aquifers with Constant Head Boundary

Ground Water ◽  
2021 ◽  
Author(s):  
Armin Pechstein ◽  
Nadim K. Copty
Keyword(s):  
Pumping Tests ◽  
Heterogeneous Aquifers ◽  
Constant Head

Quasi-steady state conditions in heterogeneous aquifers during pumping tests

2017 ◽  
Vol 106 ◽  
pp. 95-110 ◽  
Author(s):  
Yuanyuan Zha ◽  
Tian-Chyi J. Yeh ◽  
Liangsheng Shi ◽  
Shao-Yang Huang ◽  
Wenke Wang ◽  
...  
Keyword(s):  
Steady State ◽  
Quasi Steady State ◽  
Pumping Tests ◽  
Heterogeneous Aquifers

scholarly journals ANALISIS PERBANDINGAN NILAI KOEFISIEN PERMEABILITAS TANAH UJI LAPANGAN DAN UJI LABORATORIUM

2020 ◽  
Vol 3 (1) ◽  
pp. 97
Author(s):  
Philip Chen ◽  
Gregorius Sandjadja Sentosa
Keyword(s):  
Initial Data ◽  
Permeability Coefficient ◽  
Laboratory Tests ◽  
Pumping Test ◽  
Soil Permeability ◽  
Pumping Tests ◽  
Final Project ◽  
Coefficient Of Permeability ◽  
The Difference ◽  
Constant Head

The coefficient of permeability (k) results of pumping tests are used as initial data to determine the rate of water seepage in the soil, determining the permeability capability of the soil can be done by measurements in the laboratory and in the field. In reality the permeability coefficient value of field test is not the same as the test in the laboratory. This final project will analyze the difference in value (k) obtained from field and laboratory tests in order to enrich the data in determining the value of permeability coefficient (k). The analysis uses Thiem and Theis method in analyzing the results of pumping tests. And using constant head permeameter to determine the value of the coefficient of permeability (k) in laboratory. From the analysis results obtained by the Thiem method, the permeability coefficient (k) obtained is in the range of  6,8x cm/sec - 2,8x cm/sec, and Theis method is obtained in the range of  6,03x cm/sec - 6,03x cm/sec. Meanwhile the results of the coefficient of soil permeability (k) by the laboratory tests using the constant head permeameter is in the range 1,43x  cm/sec - 8,76x cm/sec. And for calculations using the Hazen method the result is in the range 8,71x cm/sec - 4,35x cm/sec.AbstrakNilai koefisien permeabilitas (k) hasil pumping test digunakan sebagai data awal untuk mengetahui kecepatan rembesan air di dalam tanah, penentuan kemampuan permeabilitas tanah dapat dilakukan dengan pengukuran di laboratorium dan di lapangan. Dalam kenyataannya nilai koefisien permeabilitas uji lapangan biasanya tidak sama dengan uji di laboratorium. Penelitian ini akan menganalisa perbedaan nilai (k) yang didapat dari uji lapangan dan uji laboratorium guna memperkaya data dalam menentukan nikai koefisien permeabilitas (k). Analisa pada penelitian ini menggunakan metode Thiem dan metode Theis dalam menganalisa hasil pumping test pada lapangan. Dan menggunakan constant head permeameter sebagai alat menentukan nilai koefisien permeabilitas (k) pada laboratorium. Serta menggunakan metode rumus empiris Hazen untuk menentukan nilai koefisien permeabilitas (k) berdasarkan ukuran butiran. Dari hasil analisis yang diperoleh dengan metode Thiem nilai koefisien permeabilitas (k) yang didapat berada pada rentang  6,8x m/detik - 2,8x cm/detik, dan dengan metode Theis didapat pada rentang 6,03x cm/detik - 6,03x cm/detik. Sedangkan hasil uji laboratorium menggunakan permeameter constant head mendapatkan hasil nilai koefisien permeabilitas tanah (k) pada rentang 1,43x  cm/detik  -   8,76x cm/detik. Dan didapat hasil 8,71x cm/detik - 4,35x cm/detik untuk perhitungan menggunakan metode Hazen.

scholarly journals Estimating transmissivity from single‐well pumping tests in heterogeneous aquifers

2016 ◽  
Vol 52 (1) ◽  
pp. 495-510 ◽  
Author(s):  
Armin Pechstein ◽  
Sabine Attinger ◽  
Ronald Krieg ◽  
Nadim K. Copty
Keyword(s):  
Pumping Tests ◽  
Heterogeneous Aquifers ◽  
Single Well

Effects of Inclination Angle on Archimedes Screw Generator Power Production with Constant Head

2021 ◽  
Vol 147 (3) ◽  
pp. 04021001
Author(s):  
Scott Simmons ◽  
Guilhem Dellinger ◽  
Murray Lyons ◽  
Abdelali Terfous ◽  
Abdellah Ghenaim ◽  
...  
Keyword(s):  
Inclination Angle ◽  
Power Production ◽  
Constant Head
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