Project Description

The total pipeline length is approximately 9,593 meters, including: a new intake tunnel of about 219 meters, the #2 diversion tunnel section of about 691 meters, a pipe-jacking section (including shield tunneling) of about 2,803 meters, an open-cut section of about 5,025 meters, a pipeline bridge of 656 meters, and a fire protection facilities section of about 199 meters. The project also includes PR0 wind speed reduction improvement works, as well as three years of maintenance and operation services.

Project Overview and Features

This project covers the transmission pipeline section from the connection point of the Zengwen Power Plant pressure steel pipe to the roundabout at the intersection of Zengku Road and Provincial Highway 174, and also includes PR0 operational wind speed reduction improvements.
The pipeline construction is divided into three sections: open-cut with cover, pipe-jacking, and pipeline bridge. The pipe materials consist of SP steel pipes, ductile iron pipes (DIP), and WSP jacking steel pipes.
Since the project is located within the Zengwen Reservoir area and traverses or crosses existing facilities such as the dam, maintaining the reservoir’s normal operation is a major consideration. Key challenges include: ensuring PR0 wind speed reduction works do not disrupt PR0 operations; constructing the new intake tunnel without affecting power plant operation; minimizing traffic impacts on Zengku Road during open-cut works; and ensuring that construction of the Zengwen No. 3 Pipeline Bridge does not damage the “Zhaoxing Hydrological Station” on the Zengwen River.
The complexity and technical challenges of this project require comprehensive planning and effective solutions to be successfully overcome.

Project Benefits

Upon completion of the water pipeline connection, the water from Zengwen Reservoir can be directly supplied to the Nanhua Water Treatment Plant and the Nanhua–Gaoping interconnection pipeline. This will enhance regional water resource allocation and backup capacity, strengthen the resilience of public water supply against drought in southern Taiwan, ensure stable water supply to promote industrial development, and improve the quality of life in the southern region.