摘要
分析比较三种较新的大坝变形监测自动化系统的实际运行情况 .对于真空激光准直系统 ,提高其稳定性的关键是提高安装质量 ,保证其密封性 ,同时保证波带板起落 (翻转 )系统的灵活性和复位精度 ,此外还要选用高质量的激光管 ,并采用防潮和稳压措施 ;对于GPS系统为节约投资和提高精度采用双频双星卫星接收机和增加基准点数、优化基点布置的方法 ;对于光纤系统 ,其关键是解决光纤的保护和仪器系列化问题 .
Dam deformation is one of the most important monitoring items.Various monitoring systems for dam deformation are discussed in this paper according to the advance in monitoring system for dam safety.The principle and structure of the system and the field operating conditions are also discussed.Installation quality,flexibility,and reset accuracy of gears and seals must be ensured for the laser collimator system,and high quality laser tube,stable votage,and moisture proof measures must be adopted in order to improve reliability.In order to reduce investment and improve accuracy of GPS,sigle frequency & double star system may be adopted.Problems concerning the optical fiber system,optical fiber protection,and instrumentation seriation must be resolved.
出处
《水利水电科技进展》
CSCD
2000年第6期23-25,共3页
Advances in Science and Technology of Water Resources
关键词
变形监测
自动化系统
激光准直
GPS
大坝
deformation monitoring
automatic system
laser collimator
GPS
optical fiber
