A Comparative Analysis of the Construction Methods between Foreign and State-Owned Contractor Enterprises on the Jenelata Dam Project: The Case Study of Excavator Breaker and Blasting
Received: 13 March 2025 | Revised: 30 April 2025 and 28 July 2025 | Accepted: 1 August 2025 | Online: 21 October 2025
Corresponding author: M. Asad Abdurrahman
Abstract
Determining the appropriate method and evaluating the work can have a significant impact on construction. Jenelata Dam is being constructed by both foreign and State-Owned Enterprise (SOE) contractors. Rock excavation is typically carried out using an excavator breaker or the blasting method. This study was conducted to compare the construction methods and to identify and evaluate the factors affecting the time performance of each method. This research uses descriptive, qualitative, and quantitative methods. A productivity analysis tool was utilized to compare the performance of the two contractors, and an analytical hierarchy process was deployed to determine the significance of the factors. Based on the evaluation results of the rock excavation work of the excavator breaker method at Concrete Face Rockfill Dam (CFRD) Works (left-bank), the daily productivity of SOE contractors is 729.10 m3/day for four units of equipment, and the completion time is 155 days. The daily productivity at the foreign contractor spillway is more effective using the blasting method of 875.95 m3/day for one unit of equipment, done in 73 days. According to both contractors, design is the most significant factor affecting construction time performance.
Keywords:
dam, rock excavation, excavator breaker, blastingDownloads
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