Research and application of underwater safety inspection technology for hydraulic structure of large hydropower station
Based on summary of advantages and disadvantages of common safety inspection methods,technology and equipment of underwater safety inspection are studied and some solutions are proposed,such as miniaturized high-power ROV,multi-beam combined ROV and intelligent unmanned ships.These solutions have addressed challenges of underwater inspection in complex environment such as deep-buried large-diameter long diversion tunnel,high-head multi-bend penstock and high-flow open water area.Moreover,these technologies have been successfully applied to cascade hydropower stations in the Yalong river basin,which is worthy of reference for similar projects.