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Key techniques for evaluation of safety monitoring sensors in water conservancy and hydropower engineering

Water Science and Engineering 2012年第4期5卷 440-449页

作者： Yan XIANG Lin WANG Zhan-jun WANG Hui YUAN Yun-jie GUAN Department of Dam Safety Management Nanjing Hydraulic Research Institute Xiaolangdi Dam project Construction and Management Bureau of Ministry of Water Resources College of Hydrology and Water Resources Hohai University

For the evaluation of construction quality and the verification of the design of water conservancy and hydropower engineering projects, and especially for the control of dam safety operation behavior, safety monitoring sensors are employed in a majority of engineering projects. These sensors are used to monitor the project during the dam construction and operation periods, and play an important role in reservoir safety operation and producing benefits. With the changing of operating environments and run-time of projects, there are some factors affecting the operation and management of projects, such as a certain amount of damaged sensors and instability of the measured data. Therefore, it is urgent to evaluate existing safety monitoring sensors in water conservancy and hydropower engineering projects. However, there are neither standards nor evaluation guidelines at present. Based on engineering practice, this study examined some key techniques for the evaluation of safety monitoring sensors, including the evaluation process of the safety monitoring system, on-site detection methods of two typical pieces of equipment, the differential resistor sensor and vibrating wire sensor, the on-site detection methods of communication cable faults, and a validity test of the sensor measured data. These key techniques were applied in the Xiaolangdi Water Control project and xiaoxi hydropower project. The results show that the measured data of a majority of sensors are reliable and reasonable, and can reasonably reflect the structural change behavior in the project operating process, indicating that the availabilities of the safety monitoring sensors of the two projects are high

关键词： water conservancy and hydropower engineering safety monitoring sensor Xiaolangdi Water Control project xiaoxi hydropower project

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