三峡水库坝前深水清淤疏浚技术研究

水库泥沙淤积问题普遍存在于全球水库中，影响防洪、发电、航运、水资源利用等水库功能的正常发挥，尤其是坝前泥沙淤积，可能会堵塞电站进水口和泄流底孔，严重影响水库发电效益和泄洪安全。对于大型水库而言，坝前水深一般在100 m以上，高效安全地进行坝前深水清淤疏浚是有效控制水库泥沙淤积、保持水资源可持续利用的一种重要途径。研究了气动力式深水清淤技术，并在三峡水库坝前深水环境进行了清淤试验。研究结果表明气动力式清淤技术可在百米级的深水环境中安全高效运行，清淤成本可控。研究成果可为大型水库清淤疏浚提供技术参考。

Aerodynamic Dredging Technology for Deep Water in front of Three Gorges Reservoir

Reservoir sedimentation is a worldwide problem which affects the normal functioning of flood control,power generation,shipping,and water resources utilization. In particular,sediment deposition in front of dam may block the water intake of hydropower station and bottom outlet,severely affecting the power generation efficiency and flood discharge safety. The water depth in front of the dam of large reservoirs is generally over 100 meters. Efficient and safe dredging is an important approach to effectively control sediment deposition and maintain sustainable development of water resources. In this paper,the aerodynamic deep-water dredging technology is studied and applied to the Three Gorges Reservoir. Application result manifests that aerodynamic dredging technology can be operated safely and efficiently in 100-meter deep water environment. The research results can be taken as a technical reference for the dredging of large reservoirs.