Application of Electrical Resistivity Tomography (ERT) in Designing a Tubewell Dimension, Well Screen and Pumping System of Groundwater in Northern Kelantan
Keywords:Electrical resistivity, Groundwater, Tubewell Design
Electrical Resistivity Tomography (ERT) measurement is used in detecting the thickness and location of the aquifer zone in Northern Kelantan. The suggested tubewell is designed using AutoCAD 2016 after knowing the condition of the underneath surface. It is from secondary data of ERT obtained from M. Faizal (2016) using RES2DINV in searching the groundwater zone. The design of the submersible pump in the tubewell is using a performance chart from the Grundfos brands namely SP 270-2L G and SP 270-3A G. Then, the well screen is designed based on the calculation of the slot opening area. The results of the maximum water yield obtained are up from 2988 m3/h to 4356 m3/h. Thus, the components are considered based on the geological material, required flow rate, and capability of the pump that discovered using ERT images of 2-D.