Naussac Dam (france):Aginf of the Upstream Concrete Face:Detection,Looking for Leaks and Repair
The CFRD is sealed by its upstream mask.Under the effect of the deformation of the face slab, or under the influence of aging sealing devices may experience failures.Since its exploitation in 1983, the Naussac CFRD dam (France), 50 m height, is characterized by seepage flow of the order of 450 L/rain.From 1994, rates increased strongly to an average of 1 700 L/rain.The monitoring system was reinforced.The dam has experienced several crises with very high flow rates.We developed specific monitoring, searched for leaks and initiate different repairs, as a temporary emergency solution or more permanently.We present our experiences in the three areas : -Monitoring: seepage measurement monitoring is done through automatic equipment; -The search for leaks, including underwater inspection-assisted by full panoramic Imaging sonar ; -Repairs which included: (1) temporary work performed under water; (2) definitive treatment of a part of the executed joints ; (3) of the one-off final work performed under water.During underwater interventions, the effect of the repairs was immediately evaluated with the help of monitoring devices.Definitive treatment carreid out above the water level and exceptionnally below thewayer level.
leak monitoring flow rate remotely operated vehicle inspection sonar inspection
Vuillermet Eric
BRL ingenierie, 1105 Avenue Pierre Mendès France-BP94001-F-30001 N(I)mes
国际会议
昆明
英文
852-862
2013-11-01（万方平台首次上网日期，不代表论文的发表时间）