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《Modern Tunnelling Technology》 2010-04
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Soil Reinforcement Technology for Water-soaked Soft Stratum at Shield Tunnel Launching Portal

Chen Xuejun1 Zou Baoping1 Yi Jue2 Kuang Guanglin2(1 School of Civil Engineering and Construction,Guilin University of Technology,Guilin 541004;2 Guangdong Huaxui Tunnel Construction Co.,Ltd.,Guangzhou 510635)  
It is crucial to ensure the stability of water-soaked soft stratum at the launching portal of a shield tunnel.Citing shield tunneling on Nanshan Commercial Center to Keji Park section of Shenzhen metro Line 2 as an example,authors made a comprehensive analysis on traditional methods such as mixing piles,rotary-sprayed piles etc.,incorporating geological conditions,groundwater,construction environment,security,economy and other factors,proposed a soil reinforcement technology for water-soaked soft stratum at shield tunnel launching portal by adopting two 800mm thick plain concrete walls together with rotary-sprayed piles.Monitoring results for the effect of soil reinforcement before and after the launching of shield indicated that the proposed option was feasible.
【Fund】: 广西自然科学基金重点资助项目(桂科自0832252);; 广西重点实验室基金资助项目(桂科能07109005-2);; 2010年广西研究生教育创新计划资助项目
【CateGory Index】: U457.3
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