The suitable discharge rate in determine the aquifer characteristic using pumping test

Mohd Rozali, Hazil Azry (2019) The suitable discharge rate in determine the aquifer characteristic using pumping test. [Project Paper] (Submitted)

Text lp FK 2019 84.pdf Download (43MB)

Abstract

Optimum discharge rate demonstrate the suitable flow rate for the well in order to operate at the optimum condition during the pumping activity. However, there is no recent study that have been conducted to clearly determine on how to obtain the optimum discharge value. Meanwhile in Malaysia, the people who working in hydrogeology field run the pumping test based on the presumption on discharge and available pump at the area. This is inappropriate because the test may cause damage to the aquifer and well while giving an error to the analysis of the aquifer characteristic. In this study, a step drawdown test was conducted with 5 increment of discharge rate in order to obtain the specific capacity for the aquifer. The step test was run for 5 hour at 1 hour interval time. The discharge rate started with 1.90m3/hr, 2.55m3/hr, 3.0m3/hr, 3.35m3/hr and 5.14m3/hr. Thus, based on graph specific capacity versus discharge rate, optimum discharge rate was obtained which is 2.96m3/hr. Next, hydraulic conductivity of aquifer was evaluated by conducting the constant rate test using 3 different discharge which is 1.90m3/hr, 2.96m3/hr and 5.14m3//ir. Analysis of constant rate test was computed by an Aquifer Test software and the aquifer was verified to be a unconfined aquifer. The constant rate test analyzed the hydraulic conductivity of aquifer with 2.42m/day for the optimum discharge while the recovery test analyzed to be 0.033m/day. The hydraulic conductivity of aquifer from optimum discharge rate which 2.96m3/hr prove that it is the most suitable pumping rate to be used when conducting any pumping test activity in order to correctly analyzed aquifer characteristic.

Item Type:	Project Paper
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Faculty:	Faculty of Engineering
Depositing User:	Ms. AZLINA ZAINAL ABIDIN
Date Deposited:	27 Nov 2025 08:55
Last Modified:	27 Nov 2025 09:23
URI:	http://psaspb.upm.edu.my/id/eprint/2630

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