Void detection of sluice floor based on shear-wave impact image method
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Abstract:
There are serious seepage and gushing of a sluice hub. The cavity and distribution scope between Sluice floor and foundation surrounding is carried out based on shear-wave impact imaging method (SIIM)，results is show that SIIM can reduce the interfere of water and steel mesh. The exploration results also provide the reliable basic data in terms of design repair and reinforcement the hydraulic project. At first，this paper describes the principle of the detection method，and gives the detection data processing，and develops cavity standards by numerical simulation. Finally, the defect distribution of sluice floor was completed. Detection conclusion as follow:1）Sluice floor presence void and some void is formed on the leakage passage which caused gushing water on the downstream side;2）void of sluice floor which greater than 20% need grouting treatment for timely, moderate void need further exploration, the other void which is less severe without treatment;3）Recommended for monitoring vertical deformation and horizontal deformation of sluice, strict control of the maximum operating level to prevent sluices from collapse and decline. SIIM provides a reference method for similar hydraulic projects in defects exploration.
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