The Yayou Canal in Dahu Township had severely deteriorated due to long-term lack of maintenance, leading to serious leakage issues and inadequate maintenance of irrigation channel walkways. This resulted in water shortages, leaks, and dangerous conditions for farmers during irrigation and canal inspections. To effectively maintain smooth irrigation while preserving biodiversity and avoiding habitat destruction, the project aimed to improve drainage canal facilities. This included implementing green energy generation and a remote-controlled automatic sediment discharge system to reduce manual dredging efforts by farmers while maintaining the canal's irrigation function.
Due to the lack of maintenance roads for the Yayou Canal, inspection personnel often had to walk precariously along the canal. To address this, the improvement project implemented a comprehensive inspection walkway to meet dredging needs. Given the narrow construction area and considerations for energy conservation, carbon reduction, and the use of local materials, the project employed a technique that mixed the on-site soil, eliminating the need for steel mesh. This simplified construction, ensured durability, and seamlessly blended with the local environment, aligning with green building standards.
The ecological engineering method selected local existing materials for stonework, avoiding the need to transport materials from other areas. This not only reduced costs and difficulties in material acquisition but also prevented ecological damage to the source areas. The project also considered channel safety and future management, seeking a balance between safety and ecology while preventing easy sedimentation.
Introduction of Smart Monitoring and Management Facilities
To enhance the ease and efficiency of maintenance management, the project installed an IoT-based sediment discharge system, allowing for remote, timed control of sediment discharge, thereby reducing manual labor costs. Additionally, solar power systems and outdoor day-and-night surveillance cameras were installed to ensure the safety of the canal and achieve energy conservation and carbon reduction goals.
The project adopted high-quality, eco-friendly approaches that minimized topographical changes, aligning with net-zero carbon emission strategies by reducing concrete use and lowering carbon emissions from construction materials. Through landscape creation, the maintenance passage also serves recreational purposes, enhancing the beauty of water conservancy facilities while preserving the long history of the Yayou Canal. This increases local residents' sense of identity and integrates water conservancy, history, recreation, and industrial development.
The Yayou Canal has long been a vital irrigation source for Daliao Village. Due to years of neglect and deterioration, local farmers actively sought public funding and participated in the design and construction phases, providing irrigation needs and suggestions to enhance overall project benefits. After completion, the project effectively reduced canal leakage and stabilized the water supply, increasing agricultural production value. The beautified landscape and patrol walkways around the canal also provide local residents with recreational walking spaces, fostering community awareness.1. After completion, the project reduced canal leakage and stabilized the water supply, increasing agricultural production value and ensuring the quality of farmland irrigation.
2. During the design and construction phases, management units, residents, and farmers were invited to design and construction briefings. Ecological check briefings were held to address environmental issues, ensuring the design aligned with public opinion and implementing public supervision to ensure construction quality.
3. The design incorporated low-maintenance, locally sourced methods, minimizing excavation. During construction, walkways were prefabricated in factories and assembled on-site to reduce environmental impact.
4. After the Yayou Canal improvement, water conveyance efficiency increased, directly benefiting 30 farming households and increasing the irrigated area by 40 hectares. The overall industrial economic value is estimated at NT$160 million.
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