Electrical Measurements And Optical Measurements Variance Analysis In Pit Monitoring

With the continuous development of urban construction, every big city in the world in the development and utilization of underground space for different purposes, such as subways, multi-basements, underground garages, underground shopping malls and a variety of industrial and civil facilities underground. The scale and the increase of excavation depth of foundation pit complicating temporary retaining structure deformation and stability and outstanding, become and one of the focuses of the municipal administrative department of engineering. Affected area in order to ensure the construction of existing buildings and underground pipeline security and stability, and the safety of the construction process, construction control on the surrounding environment to provide data, the influence of deformation of retaining structure in the process of construction for condition monitoring, by design value compared with the monitoring data to determine the previous step conformed to the expected requirements, construction technology and construction parameters to determine and optimize the construction parameters, achieve the informatization construction. The results of field measurement used in optimization design of feedback information, achieve the goal of high quality security, economic and reasonable.Foundation pit monitoring according to the measuring method is divided into optical and electrical measurement, two kinds of measurement results can support each other in theory, but the actual measurement results will have bigger difference, through the analysis and comparison are made on the two difference measurement data. To gauge the real data, reliability, provide powerful evidence.