School of Physics - Universiti Sains Malaysia

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THE STUDY OF GROUNDWATER FLOW USING 2-D ELECTRICAL IMAGING METHOD

 

 

ABSTRACT

 

Groundwater flow can have dramatic implications for engineering and geotechnical studies. The study of groundwater flow is essential for engineers who planning almost any kind of structure, either above or below the ground. Ignoring the effect of groundwater flow on soil or slope stability can be both costly and dangerous. Particularly in Malaysia, the usage of geophysical method in environmental and engineering cases is limited.

Therefore, throughout this research, two geoelectrical imaging methods have been proposed. The highlight of this research work lies in studying the usage of self potential and electrical resistivity tomography method in detecting water flow/seepage. In this study there are five different locations were identified and associated with underground water flow research. There are two test sites which located within Universiti Sains Malaysia vicinity which are Convocation site and Hamzah Sendut II library. The other three locations are in Gelugor (Penang), Seberang Perai (Penang) and Puchong (Selangor). Based on the correlated result from the surveys done, groundwater flow pattern can be delineating clearly. Apart of that, the findings of the source and saturated zone also can be yields using these methods. In conclusion, geoelectrical methods are complementary in relation with groundwater flow study.

 

 

 

ABSTRAK

 

Aliran air bawah tanah mempunyai implikasi yang dramatik terutamanya bagi kajian kejuruteraan dan persekitaran. Kajian tentang pengaliran air bawah tanah adalah penting bagi para jurutera yang merancang pelbagai struktur, samada di permukaan mahupun di bawah tanah. Pengabaian tentang kesan-kesan aliran air bawah tanah terhadap kestabilan tanah atau cerun boleh mengakibatkan kos yang tinggi dan berbahaya. Di Malaysia terutamanya, penggunaan kaedah geofizik terhadap kes-kes kejuruteraan dan persekitaran adalah terhad.

 

 Justeru itu, melalui penyelidikan ini, dua kaedah pengimejan geoelektrik telah dikemukakan. Fokus penyelidikan ini adalah terhadap penggunaan keupayaan kendiri dan tomografi keberintangan elektrik dalam mengesan pengaliran air. Dalam kajian ini, terdapat lima lokasi berlainan yang dikenal pasti dan berkaitan dengan kajian penyelidikan pengaliran air bawah tanah. Terdapat dua lapangan ujian yang terletak di dalam kawasan Universiti Sains Malaysia iaitu Tapak Konvo dan Perpustakaan Hamzah Sendut II. Tiga lokasi yang lain pula terletak di Gelugor (Penang), Seberang Perai (Penang) and Puchong (Selangor). Berdasarkan korelasi keputusan daripada survei yang dibuat, corak aliran air bawah tanah dapat ditandakan dengan jelas. Selain itu, penemuan sumber dan zone tepu juga dapat diperolehi menggunakan kedua kaedah ini. Kesimpulannya, kaedah geolektrikal menjadi pelengkap kepada hubungan kajian aliran air bawah tanah.

 

 

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The Dean, School of Physics,
Universiti Sains Malaysia,
11800 USM,
Penang, Malaysia

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  • Last Modified:
    Wednesday 18 December 2024, 06:49:41.