Analysis on Ground Settlement Induced by Shallow Buried Cross Channel of CRD Method under Artificial Filling

Abstract:

The shallow underground tunnel is near to the ground; its many construction procedures are complicated, supporting and excavation are intertwined. The ground surface deformation is complex during construction. Through the analysis of the cross passage surface settlement data of Dalian metro Line 1High-tech zone Street station, we found that the ground surface caused by artificial filling integrally sinks during excavation, the shape of its sinking is like a flat funnel, the characteristics of settling tank are obvious. The influence of faces constructing is obvious on surface settlement, and the transverse influence range is about 30m; the longitudinal influence range is about 15m. The results of the paper show that the place of monitoring points should be held at 15m ahead from the tunnel face, effectivemonitoring period is 70d. The monitoring results are enough and safe for the stability requirement of the surrounding rock.

• Periodical: Applied Mechanics and Materials (Volumes 353-356)
• Pages: 1519-1524
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.353-356.1519
• Online since: August 2013
• Authors: Jin Kui Li, Jing Jing Li, Liu Jie Du
• Keywords: Artificial Filling, CRD Method, Ground Settlement, Shallow Underground

References

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