乌江渡水电站激光准直变形监测资料分析

Analysis on Deformation Monitoring Data of Laser Collimation System for Wujiangdu Arch Dam

通过对乌江渡水电站激光准直变形监测系统在真空和微压差条件下监测数据的分析,表明激光准直变形监测系统用于拱坝变形自动化监测是可行的,能够反映大坝变形规律。在微压差条件下比在真空条件下系统更为灵敏,变化规律明显,表明系统管道在微压差条件下密封要求相对不高,运行可靠性高,建议变形监测系统采用微压差工作模式。

The monitoring data of laser collimation system in Wujiangdu Hydropower Station under vacuum and micro pressure differential conditions are analyzed respectively. The results show thai the laser collimation system is feasible for the automatic deformation monitoring of arch dam and can reflect the law of dam deformation. The system is more sensitive and the law of deformation is more obvious under the condition of micro pressure differential relative to the condition of vacuum, whieh indicates the sealing requirement of system pipeline under micro pressure differential condition being not relatively high, but has high operation reliability. It is suggested that the deformation monitoring system adopts the operating mode of micro differential pressure.