1. Introduction
China is now enjoying a boom in metro construction. However, for
most of the cities, there is no previous experience in the construction
of metro tunnels. Some serious failures in tunnel construction have
resulted in fatalities and major property damage. Most of the failures
are attributed to inadequacies in the management of geotechnical
risks. Consequently, safety management especially for geotechnical
risk control has become one of the major issues in the metro tunnel
projects.
During a tunnel project, appropriate geotechnical instrumentation
should be installed to monitor the critical parameters required for
safety risk control. These include ground settlement, convergence
of the tunnel, displacements of adjacent facilities caused by the construction
works, etc. Such processes generate large amounts of data.
Additionally, in order to make a more comprehensive analysis, safety
management decision making should combine the daily data collection
with other relevant information that is scattered among multiple,
dispersed and fragmented data sources. These may include construction
drawings, geological reports, etc.
As a result, it is vital to store all the data in a standard format in
order to facilitate the retrieval of valued information on site and provide
contextual meanings for the instrumentation data. This also
helps to avoid data loss and to accumulate experience for further
Ground settlement
1. IntroductionChina is now enjoying a boom in metro construction. However, formost of the cities, there is no previous experience in the constructionof metro tunnels. Some serious failures in tunnel construction haveresulted in fatalities and major property damage. Most of the failuresare attributed to inadequacies in the management of geotechnicalrisks. Consequently, safety management especially for geotechnicalrisk control has become one of the major issues in the metro tunnelprojects.During a tunnel project, appropriate geotechnical instrumentationshould be installed to monitor the critical parameters required forsafety risk control. These include ground settlement, convergenceof the tunnel, displacements of adjacent facilities caused by the constructionworks, etc. Such processes generate large amounts of data.Additionally, in order to make a more comprehensive analysis, safetymanagement decision making should combine the daily data collectionwith other relevant information that is scattered among multiple,dispersed and fragmented data sources. These may include constructiondrawings, geological reports, etc.As a result, it is vital to store all the data in a standard format inorder to facilitate the retrieval of valued information on site and providecontextual meanings for the instrumentation data. This alsohelps to avoid data loss and to accumulate experience for furtherGround settlement
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