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Aquifer characterization and groundwater potential evaluation in the sedimentary rock formation

Aquifer characterization and groundwater potential evaluation in the sedimentary rock formation / Mohd Asnizam Sazali
Kajian ini telah dijalankan untuk mencirikan akuifer serta menilai potensi air bawah tanah di formasi batuan sedimen. Kaedah Keberintangan Elektik dan kaedah penggerudian telah digunakan untuk membangunkan sub-permukaan profil tanah bagi menentukan lokasi yang sesuai untuk pembinaan telaga tiub. Keputusan kerintangan menunjukkan hidrogeologi dan taburan ciri-ciri perbezaan antara kawasan kajian. Objektif utama kajian ini adalah untuk menghubung kait keputusan yang dihasilkan dengan menggunakan kaedah keberintangan elektrik bersama-sama dengan kaedah penggerudian bagi menentukan potensi ciri akuifer di kawasan kajian menggunakan hasil daripada ujian pengepaman. Kaedah keberintangan elektrik telah digunakan untuk membangunkan lapisan bawah permukaan tanah menggunakan pelbagai jenis tatasusunan iaitu Pole-Dipole, Wenner dan Schlumberger. Kajian ini telah dijalankan dengan menggunakan Sistem ABEM Terrameter LS 2 dan keputusannya dianalisis dengan perisian program penyongsangan kerintangan 2D (RES2DINV). Untuk kajian kerintangan pelbagai elektrod, kaji selidik ini dijalankan dengan sebaran elektrod maksimum 400m dan 800m dengan menggunakan dua jalur kajian keberintangan yang berbeza di zon yang disasarkan. Imej-imej yang telah dibentangkan dalam bentuk profil dua dimensi (2D) kerintangan memberikan pandangan yang jelas tentang pengagihan batuan pasir, kelodak dan syal serta potensi zon air bawah tanah. Penilaian potensi zon air bawah tanah yang dikenal pasti daripada hasil kerintangan telah disahkan dengan menggunakan ujian pam, ujian penyusutan dan ujian pemulihan. Gabungan antara ketiga-tiga tatasusunan dan korelasi antara log penggerudian dan ujian pengepaman boleh dipercayai dan berjaya dalam mengenal pasti zon berpotensi untuk mendapatkan air bawah tanah di kawasan kajian. _______________________________________________________________________________________________________ The study was carried out to characterize the aquifer and to evaluate ground water potential in the sedimentary rock formation. Electrical Resistivity method and drilling method was used to develop subsurface soil profile for the determination of suitable location for tube well construction. The resistivity results show hydro-geological and the distribution of inter distinctions features of the study area. The main objective of this study is to correlate the results obtain using the electrical resistivity method together with drilling method to determine the aquifer potential characteristic in the study area using the pumping test results. The electrical resistivity method was used to infer the subsurface soil layer using different types of arrays namely Pole-Dipole, Wenner and Schlumberger array. These surveys were conducted by using ABEM Terrameter LS System and the results were analysed using 2D resistivity inversion programme (RES2DINV) software. The survey alignments were conducted with maximum electrode spread of 400 m and 800 m by employing two different resistivity survey lines at the targeted zone. The images were presented in the form of two-dimensional (2D) resistivity profiles providing a clear view of the distribution of interbedded sandstone, siltstone and shale as well as potential groundwater zones. The evaluation of potential groundwater zones identified from resistivity results were confirmed by using pumping test, step drawdown test and recovery test. The combination between these three arrays and the correlation between the well log and pumping test is reliable and successful in identifying potentially favorable zones for obtaining groundwater in the study area.
Contributor(s):
Mohd Asnizam Sazali - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875007354
Barcode : 00003105300
Language:
English
Subject Keywords:
aquifer; hydrogeologica; electrical resistivity
First presented to the public:
6/1/2017
Original Publication Date:
3/21/2017
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Civil Engineering
Citation:
License Grantor / Date Granted:
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Date Deposited
2018-03-21 10:28:20.672
Date Last Updated
2020-05-14 14:28:26.673
Submitter:
Mohd Jasnizam Mohd Salleh

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Aquifer characterization and groundwater potential evaluation in the sedimentary rock formation1 2018-03-21 10:28:20.672