Analysis And Interactive Processing Of The Subway Surface Subsidence Monitoring Data

In the subway construction process will inevitably lead to surface subsidence, when the settlement rise to a certain extent, the safety of buildings and the normal use of underground facilities will be affected. Therefore, the real-time monitoring of surface subsidence is especially necessary. The computer is used to analyze and process the surface subsidence monitoring data in engineering practice has an important application value, it can be scientific, effective to provide the surface analysis and prediction results for the surface subsidence monitoring personnel.Based on the construction of Xi'an Metro Line 2 Project 1-Youjia village-ChangyanbaoTJSG-18, this paper around the surface settlement monitoring data made the following researches:This paper discusses the factors of the surface subsidence caused by shield construction and the mechanism of it. Total measured settlement-time curves are drawn according to the surface subsidence monitoring data during one year, and this paper in-depth studies the development of surface settlement curve.This paper researches some usual analysis and forecast models, such as exponential curve model, logarithmic curve model, hyperbolic model and growth curve models, then finds the forecast models to have relatively good fit and smaller error. The simulation results show that Logistic curve model and Richards curve model have relatively good fit and the error is smaller.A new settlement forecast model named Logistic-Richards curve combined forecasting model was proposed. Logistic-Richards curve combination forecasting model makes the optimized combination of the above two models using the variance-covariance method to determine the most reasonable weighting. The simulation results show that the new forecast model possesses the advantages of the two models and have better fitness and smaller error, which is better than the traditional settlement prediction model. This paper researches the health monitoring safety level and the surface subsidence control benchmark. It provides reference for monitoring control of the surface settlement caused by tunnel excavation of Xi'an subway.This paper designs and developments of the "the processing system of surface subsidence monitoring data ", This system uses Visual Basic 6.0 to design the software interface, through the secondary development of Access and Origin, this system has the following functions:the generation of monitoring database, the query of monitoring data, the automatic generation of surface subsidence monitoring and the preservation and display graphics, and so on. It provides a convenient and rapid analysis tool for the surface subsidence monitoring personnel.