关键词: 苗尾水电站, 砾质土心墙堆石坝, 白蚁, 潜在危害, 防治

Abstract: Miaowei hydropower station is located in Dali, Yunnan Province. The project features a gravel soil core rock-fill dam and is designed to be built with 1.8 million cubic meter of earth-fill material. However, the site investigation discovered the presence of large amount of termite colonization. The investigation also showed that this infestation is distributed evenly across the planned material field. Without counter measures, it is foreseeable that the infestation would spread further into the dam body during its construction as well as after its completion. Further, it would potentially cause great damage to the dam and project. It is proposed that counter measures such as chemical pesticide, trap lamp should be carried out before the commencement of earth filling, during its construction, and after the completion, to ensure the future safety and soundness of the dam and the project.

Key words: Miaowei hydropower station, gravel soil core rock-fill dam, termite, potential damage, prevention