Research On Dam Safety Monitoring Automation System

Building barrage and constructing reservoir bring tremendous economic benefits and at the same time play all important role in improving the level of urbanization and promoting regional socio-economic development and ecological environment construction. But once the dams have accidents, there are incalculable disaster and loss. In mitigation and safety warning purpose, this paper discusses the factors influencing the earth dam safety, analyzed the earth-rockfill dam safety monitoring system meaning, and the basic methods of dam safety monitoring, and also briefed the dam safety monitoring sensor discussed in detail.The automation system for dam safety monitoring, which is adopted the principal and subordinate distributed network, is composed of the transducers, the intelligent measurement and control equipments, and the host computer. The transducers are used to monitor the change of stress,seepage, distortion, surroundings and etc. The measurement and control equipments are used to sample and process the signal of the transducers, and memorize the results, then communicate with the host computer, and etc. The host computer processes the measurement data,analyzes the state of the dam nmning, so as to evaluate the status of dam safety.In the above theory basis, this paper designed a automation system of Nanying dam safety monitoring which in Wuwei Gansu province in the light of the engineering application. The full extent of the dam safety monitoring system is very wide, and the field environment where the equipment is working is abominable,so the equipment is easy to be affected by much interference. On devising the equipment, the interfere and its passes are analyzed, then many measures, such as lightning proof, anti-interference, damp proof, temperature compensation, and etc. are took to assure the currency and reliability of the equipment.Meanwhile this thesis focuses on the Multi-sensor data fusion technology, and data fusion algorithm is applied to the dam safety monitoring system in this thesis. Through the arithmetic average and partial estimation method of multiple sensors, the measured value fusion, in order to prevent the node failure and external factors on the measurement results of measurement caused interference. And on this basis, the article gives a safety analysis of monitor data to the dam safety monitoring system , which gripping the theme of preventing of earthquake disasters and guidancing safe operation.