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| ANALYSIS OF SOIL REINFORCEMENT FOR THE STARTING AND ARRIVING OF SHIELD MACHINE IN METRO CONSTRUCTION |
| LI Da-yong1, WANG Hui2, WANG Teng3 |
| 1School of Civil Engineering, Shandong University of Science &Technology; 2Guangzhou Subway Design and Research Institute; 3Department of Geotechnical Engineering, Tongji University |
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Abstract Research purpose: In the shield tunnel construction, the starting and arriving of shield machine's technology is an important section. Whether the soil improvement is available or not have an impact on the safety of the shield machine's starting and arriving. So, reasonable construction methods for improved soil and necessary supervising measures guarantee the construction of shield tunnel.
Research method: Based on the authors' long time construction experiences, this paper analyzed the effects of soil improvement, scope of the soil improvement and application of construction for soil improvement. Finally, this paper summed up the accidents caused by worse soil improvement and the supervising method for soil improvement.
Research result: This research shows that the differences between soil improvement of end tunnel and general soil improvement are not only in strength demand and also in anti-seepage demand. For soil improvement of end of tunnel, economy is mended to be considered, which is determined by length, width, methods of soil consolidation. That is to say that soil improvement deals with whether the risk and width of soil improvement
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Received: 20 October 2005
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2006, Vol. 23 
