Application of Microtremor Method to Boulders Detection in  Urban Metro Shield Construction: Case Study of Fuzhou Metro Line No.1

doi:10.3973/j.issn.1672-741X.2016.12.014

Tunnel Construction ›› 2016, Vol. 36 ›› Issue (12): 1500-1506.DOI: 10.3973/j.issn.1672-741X.2016.12.014

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Application of Microtremor Method to Boulders Detection in  Urban Metro Shield Construction: Case Study of Fuzhou Metro Line No.1

LIU Hongyue¹, HUANG Jiakun¹, SUN Zhiyong², ZONG Quanbing²

(1. Fujian Provincial Institute of Architectural Design and Research, Fuzhou 350001, Fujian, China; 2. Fuzhou Urban Metro Co., Ltd., Fuzhou 350001, Fujian, China)

Received:2016-05-03 Revised:2016-07-18 Online:2016-12-20 Published:2016-12-30

Abstract

Abstract:

The boulders (spherical weathered granite) exist commonly in south China; and the compression strength of boulder can reach 100 MPa. The boulders occurred during shield tunneling of Fuzhou Metro Line No. 1, which would lead to potential safety risk. The microtremor method is adopted to detect the boulders of Fuzhou Metro Line No. 1. The application results are testified by borehole drilling. The working principle of microtremor detection method is introduced. The application results of the microtremor detection method to Fuzhou Metro Line No. 1 show that the abovementioned method is reliable and effective in complex urban area.

Key words: microtremor detection, Fuzhou Metro, shield tunneling, boulder

CLC Number:

U 45

LIU Hongyue, HUANG Jiakun, SUN Zhiyong, ZONG Quanbing. Application of Microtremor Method to Boulders Detection in  Urban Metro Shield Construction: Case Study of Fuzhou Metro Line No.1[J]. Tunnel Construction, 2016, 36(12): 1500-1506.

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Application of Microtremor Method to Boulders Detection in  Urban Metro Shield Construction: Case Study of Fuzhou Metro Line No.1

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