| In the construction of subway tunnel, it is inevitable to producing rock and soil s disturbance, which may affect the deformation of soil caused by buildings and facilities of existing pipelines, when deformation reach a certain degree,the ground will affect the safety of buildings and underground pipelines normal using. Therefore the movement of ground caused by tunnel s construction and deformation, especially in a compact city and control the impact of means, has been the subject of concern. In order to effectively prevent and reduce the tunnel construction and surface subsidence caused by the deformation and damage the surrounding environment, to monitoring the processing the construction of the subway tunnel of great significance.This article depthly study related to subway construction settlement monitoring technology based on Web GIS technology in the proposed settlement of metro construction monitoring program. This system combines ArcGIS Server, C #,. NET, Silerlight and SQL Server2005 and other software platforms, Xi'an subway construction, for example, designed and developed the B / S structure of the settlement monitoring system based on WebGIS, the initial realization of the client browser for Electronic map zoom, roam, navigation, graphic and attribute information each query, and settlement functions settlement curve warning and make a lot of graphic information and tables information is an intuitive expression, and to make the construction settlement monitoring the implementation of early warning , The reaction in real time settlement monitoring points, to achieve the desired effect of early warning and decision support.
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