Study on Construction Scheme of Xinzhou Tunnel Crossing Underneath DatongYuncheng Highway

doi:10.3973/j.issn.1672-741X.2014.11.011

Tunnel Construction ›› 2014, Vol. 34 ›› Issue (11): 1082-1086.DOI: 10.3973/j.issn.1672-741X.2014.11.011

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Study on Construction Scheme of Xinzhou Tunnel Crossing Underneath DatongYuncheng Highway

WANG Hongchang¹, MA Zhifu¹, ZENG Qing¹, HUAN Guangkun²

(1. The Third Railway Survey and Design Institute Group Corporation, Tianjin 300142, China; 2. Sichuan Port and Channel Development Co., Ltd., Chengdu 610041, Sichuan, China)

Received:2014-09-08 Revised:2014-09-14 Online:2014-11-20 Published:2014-11-20

Abstract

Abstract:

Xinzhou tunnel on DatongXi’an passengerdedicated railway crosses underneath DatongYuncheng highway. Therefore, serious ground surface settlement and safety risks may occur in the construction of Xinzhou tunnel. In the paper, 3D simulation is made on the construction of the section of Xinzhou tunnel crossing underneath DatongYuncheng highway by means of ADECRRS and NATM, and study is made on the feasibility of different design parameters and different construction schemes, as well as on the influence on the ground surface settlement. Conclusion is drawn that the construction of the section of Xinzhou tunnel crossing underneath DatongYuncheng highway by means of ADECRRS and NATM is feasible, with the design parameters as follows: excavation by double side heading method, cyclic advance rate being 8 m, reinforcing of the top heading with 4 m reinforcement overlap, advance support by 120 m pipe roof, short advance rate and early ring closing.

Key words: ADECORS, tunneling under shallow cover, loess, highway tunnel, numerical simulation

CLC Number:

U 455.5

WANG Hongchang, MA Zhifu, ZENG Qing, HUAN Guangkun. Study on Construction Scheme of Xinzhou Tunnel Crossing Underneath DatongYuncheng Highway[J]. Tunnel Construction, 2014, 34(11): 1082-1086.

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Study on Construction Scheme of Xinzhou Tunnel Crossing Underneath DatongYuncheng Highway

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