高精度电子水准仪在抽水蓄能电站外部变形监测中的应用

Application of High-accuracy Electronic Level in Outer Deformation Monitoring of Pumped-storage Plants

抽水蓄能电站建成后必须对其进行安全监测,以确保电站高效安全运行,其中,外部垂直位移监测是重要的观测项目之一。鉴于传统的精密几何水准测量在垂直位移监测中存在工作量大、劳动强度高和效率低等问题,探讨用高精度电子水准仪进行高程测量来监测垂直位移。简述了电子水准仪的工作原理及其特点。结合在某电站外部变形监测中的实践,主要包括高程监测网的布设、外业观测和数据处理及精度分析,证明高精度电子水准仪在良好的观测条件下能满足抽水蓄能电站外部垂直位移变形监测的精度要求。

After the construction of pumped-storage plants, the security must be monitored to ensure their safe and efficient operation, and the outer vertical displacement deformation monitoring is one of the important observations. The traditional precise geometry standard measurement in vertical displacement monitoring has disadvantages of large workload, high labor intensity and inefficiency, so the use of high-precision electronic level for elevation measurements to monitor the vertical displacement is discussed. The characteristics and working principles of Leica DNA03 electronic level are outlined. Combined with the practice of outer deformation monitoring in a power plant, including the layout of elevation network, field observation and data processing and precision analysis, the results show that the high-precision electronic level can meet the precision of vertical displacement for the outer deformation monitoring of pumped-storage plant under good observing conditions.