Core Points - The successful completion of the 4th tunnel of the 27.7 km Ehelepola Canal water diversion project in Sri Lanka marks a significant milestone, indicating that the project is entering its final phase of construction [1][3] - The 4th tunnel, measuring 1,097 meters in length, faced challenges due to its shallow depth, low rock quality, and proximity to residential areas, which include houses, schools, and farms [3] - The project, which began construction in January 2023, has created over 1,300 local jobs and aims to provide irrigation water for over 70,000 hectares of farmland and drinking water for more than 370,000 households upon completion [3] Project Details - The project is a key livelihood initiative in Sri Lanka, involving hard rock tunneling, the 4th tunnel, and some open-cut water channels [3] - The construction team employed blasting methods while enhancing safety and environmental management, optimizing blasting techniques, and installing noise reduction facilities to minimize vibrations and noise [3] - The project has received a 24-hour blasting permit, which has significantly improved work efficiency [3]
斯里兰卡埃勒黑勒运河引水项目重要隧洞顺利贯通