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| INVESTIGATION OF GROUND PASS SHIELD TUNNELLING METHOD BASED ON LARGE-SCALE MODEL TEST AND ITS ENGINEERING APPLICATION |
| ZHANG Zixin1，2，HU Wen1，2，LIU Chao1，2，TENG Li3 |
| (1. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education，Tongji University，Shanghai 200092，China；2. Department of Geotechnical Engineering，Tongji University，Shanghai 200092，China；3. Shanghai Urban Construction(Group) Corporation，Shanghai 200023，China) |
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Abstract The creation of ground pass shield tunnelling(GPST) method has conquered the disadvantage of constructing working shaft for shield launching and arrival which is a typical of traditional tunnelling method，and making an innovative turning point on shield tunnelling history. This paper first presents a detail investigation on the key problems of GPST method by adopting large-scale model test，numerical simulation and in-situ monitoring. The surface settlement characteristics of different crossing stages of GPST method have been revealed. In addition，an engineering application of this new method was carried out in Moling-Jiangjun interval of Nanjing intercity fast track；some key tunnelling parameters and effective measures were explored. Comparison was also done between the monitoring data，model test results and numerical results；it is shown a good agreement with each other；and a sound basis is established for the broad application of GPST method.
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Received: 20 May 2013
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2013, Vol. 32 
