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| Measurement in Metro Construction with Subsurface Excavation Method and Feedback Technology |
| SONG Yi-rong1, CHEN Guang-feng2, XIA Shi-long3, LI Li-xia3, ZHAO Rong4 |
| 1.Qinghai University, Xining, Qinghai 810016, China; 2. Tsinghua University, Beijing 100084, China; 3. China Railway Construction Engineering Group, Beijing 100070, China; 4. Beijing University of Civil Engineering and Architecture, Beijing 100044, China |
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Abstract Research purposes：In metro construction, using the reliable monitoring and information feedback technologies can prevent the appearance of accidents. Application of the triangle surveying in shaft can connect the ground with the underground. To strengthen monitoring the deformation, convergence, the vault settlement and ground settlement along with sorting out the monitored data, mapping the displacement-time change curves in time and making regression analysis of the state curves in early stage can predict the important parameters that probably appear, such as the max. deformation value and max. stress value so as to provide the important basis for controlling the risk in advance to the metro construction with subsurface excavation method.
Research conclusions：Application of engineering measurement technology and information feedback technology can know the deformation situation of the monitored objects and therefore can make prediction and adjust the design and construction parameters in time for providing the accurate data to the metro construction and the reference to the similar works.
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Received: 12 March 2009
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2010, Vol. 27 
