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MODERN TUNNELLING TECHNOLOGY 2014, Vol. 51 Issue (3) :193-199    DOI:
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Influence of Launching Shaft Construction on Surrounding Pipeline Deformation and a Control Technique
(School of Architecture and Civil Engineering, Xi'an University of Science and Technology, Xi'an 710054)
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Abstract To avoid impacts from metro construction, some pipelines are necessarily removed. In irremovable cases, however, rational measures shall be taken to ensure minimal impact on surrounding pipelines from launching shaft construction. Using the construction of the Xi'an Metro Line 3 as an example, this paper establishes a FLAC calculation model for construction of the launching shaft, presents a pipeline monitoring scheme, analyzes the influence of launching shaft construction on supply and drainage pipeline deformation at the Tonghuamen-Hujiamiao section, and proposes reasonable protective measures. The results show that launching shaft construction has different levels of influence on the surroundings, namely, as the distance from the launching shaft increases, the influence decreases gradually. According to the research, the calculation results are basically in agreement with the monitoring results and the given scheme is effective at reducing pipeline deformation induced by the launching shaft construction.
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GAO Bing-Li
REN Jian-Xi
Keywords�� Launching shaft   Pipeline deformation   FLAC simulation   Field monitoring   Control measures      
Abstract�� To avoid impacts from metro construction, some pipelines are necessarily removed. In irremovable cases, however, rational measures shall be taken to ensure minimal impact on surrounding pipelines from launching shaft construction. Using the construction of the Xi'an Metro Line 3 as an example, this paper establishes a FLAC calculation model for construction of the launching shaft, presents a pipeline monitoring scheme, analyzes the influence of launching shaft construction on supply and drainage pipeline deformation at the Tonghuamen-Hujiamiao section, and proposes reasonable protective measures. The results show that launching shaft construction has different levels of influence on the surroundings, namely, as the distance from the launching shaft increases, the influence decreases gradually. According to the research, the calculation results are basically in agreement with the monitoring results and the given scheme is effective at reducing pipeline deformation induced by the launching shaft construction.
Keywords�� Launching shaft,   Pipeline deformation,   FLAC simulation,   Field monitoring,   Control measures      
published: 2013-11-22
Cite this article:   
GAO Bing-Li, REN Jian-Xi .Influence of Launching Shaft Construction on Surrounding Pipeline Deformation and a Control Technique[J]  MODERN TUNNELLING TECHNOLOGY, 2014,V51(3): 193-199
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