Safety Evaluation and Analysis of Sluice Gate of Xin'anjiang Hydropower Station
Safety evaluation is of great significance to ensure the reliable operation of gates.In this study,various aspects were considered,including patrol inspection,corrosion inspection,ultrasonic testing of gate welds by the pulse reflection method,material inspection,structural stress detection and check calculation of gates,status and operation detection of hoists,and hoisting capacity detection.These safety inspections were carried out on the 6#and 7#units of the Xin'anjiang Hydropower Station during their maintenance period.Based on the comprehensive safety inspection results and in accordance with relevant regulations and standards,safety assessments were conducted for the working gates of the intake and the hoist.The research findings indicated a"safe"safety classification for the working gates of the intake and the hoist.Moreover,suggestions were proposed to improve the arrangement of the hydraulic gate and hoist pumping station and the on-site operating control system.These findings serve as a scientific basis for safety inspection of gates in other hydropower stations.