Type Selection Design and Adaptability Analysis of Shield Used in Line No. 2 of Nanning Metro

doi:10.3973/j.issn.1672-741X.2017.08.019

Tunnel Construction ›› 2017, Vol. 37 ›› Issue (8): 1037-1045.DOI: 10.3973/j.issn.1672-741X.2017.08.019

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Type Selection Design and Adaptability Analysis of Shield Used in Line No. 2 of Nanning Metro

HOU Kaiwen¹, WANG Chong², JIANG Jie^{1, 3, 4, *}, YANG Gangfeng², OU Xiaoduo^{1, 3}, TANG Yingchun⁵

(1. College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, Guangxi, China; 2. China Construction Communications Engineering Group Co., Ltd., Beijing 100142, China; 3. Key Laboratory of Disaster Prevention and Structural Engineering Security, Guangxi University, Nanning 530004, Guangxi, China; 4. Guangxi Key Laboratory of Geomechanics and Geotechnical Engineering, Guilin 541004, Guangxi, China; 5. Guangxi University of Finance and Economics, Nanning 530004, Guangxi, China)

Received:2017-02-14 Revised:2017-05-19 Online:2017-08-20 Published:2017-08-22

Abstract

Abstract:

The type selection design of shield is very important to shield construction of metro; it directly affects the success of the construction. The Line No. 2 of Nanning metro crosses complex geological conditions, i. e. clay, hard rock, gravel, uppersoft and lowerhard stratum and karst stratum. As a result, the general requirements for shield type selection are put forward in terms of power device, cutterhead and cutter; meanwhile, the design of mud cake prevention, screw conveyor, small angle belt conveyor and synchronous grouting system and geological reinforcement methods are optimized. Finally, the actual tunneling parameters and ground surface settlement data show that the adaptability of the shield machine in Nanning area is good.

Key words: Nanning metro, shield type selection, karst stratum, hard rock stratum, gravel stratum, uppersoft and lowerhard stratum

CLC Number:

U 455.3

HOU Kaiwen, WANG Chong, JIANG Jie, YANG Gangfeng, OU Xiaoduo, TANG Yingchun. Type Selection Design and Adaptability Analysis of Shield Used in Line No. 2 of Nanning Metro[J]. Tunnel Construction, 2017, 37(8): 1037-1045.

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Type Selection Design and Adaptability Analysis of Shield Used in Line No. 2 of Nanning Metro

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