富水圆砾地层盾构下穿火车站股道沉降控制技术研究

doi:10.13722/j.cnki.jrme.2016.0805

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Abstract There is a higher demand on settlement control for shield tunnelling crossing railway station. The Nanning metro line one crossing Nanning railway station is confronted with the challengeable soil of round gravel with high permeability. The piled raft foundation beneath the railway tracks as well as some other control measures to reduce settlement is first introduced. Then the FEM-based shield tunnelling deformation prediction are used to study the change rule of the settlement induced by shield tunnelling. In addition，a real-time remote automatic monitoring system is proposed. By the means of instant messaging(IM) platform，all the participants concerned the project can know the settlement as well as the tunneling situation timely. According to the variation of the settlement data，the engineers gave orders to the operators in the tunnel to adjust the key tunneling parameters. The numerical simulation results and filed monitoring data indicate that it`s essential to reinforce ground before shield TBM crossing the railway track. The piled raft foundation is suitable for round gravel with high permeability. The FEM is helpful to determine the monitoring ranges and settlement control standards. With the feed-back control mechanism，the Nanning metro line one crossing Nanning railway station realized the micro-disturbed construction and the maximum settlement was only -4 mm.

Key words： tunnelling engineering shield tunnelling crossing railway station automatic monitoring round gravel strata micro-disturbed construction.

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	Articles by authors
	XIE Xiongyao1
	2
	WANG Qiang1
	2
	LIU Huan1
	2
	LI Jun1
	2
	QI Yong3

Cite this article:

XIE Xiongyao1,2,WANG Qiang1, et al. Settlement control study of shield tunnelling crossing railway station in round gravel strata[J]. , 2016, 35(S2): 3960-3970.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2016.0805 OR https://rockmech.whrsm.ac.cn/EN/Y2016/V35/IS2/3960

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