Analysis of water jetting happened in volute manhole of the hydropower plants. Issue 1 (March 2020) - Li, Wenbo
Abstract: The water injection in the volute manhole of a hydropower plant was investigated and analyzed. The analysis results showed that the main reasons for the cracking and water jetting happened in the volute manhole were that, firstly, the opening of the volute manhole was not reasonable, the reinforcement structure was damaged, and the reinforcement strength was insufficient. Secondly, the welding quality was poor, which caused the weld defect to become a cracking source and expand into a crack.