Assessment of the Safety Impacts of a Pit Construction on the Neighboring Subway
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Pit excavation
Safety assessment
Adjacent to existing subway



Submitted : 2023-08-28
Accepted : 2023-09-12
Published : 2023-09-27


In order to study the impact of pit excavation on the adjacent existing subway structure, the safety impact assessment of a project was carried out using project under construction near the subway as the engineering background. The results show that the new pit construction will produce some additional deformation on the existing subway interval structure, the deformation values are within the permissible range for safe operation. Through analysis of the results, the risk point rating of the pit adjacent to the interval is level 2. In general, the impacts of the pit construction on the neighboring subway structure are less than the specification limits.


Li W, Sun H, 2012, Calculation and Analysis of the Impact of Neighboring Deep Foundation Pit Excavation on Existing Subway. Journal of Geotechnical Engineering, 34(S1): 419–422.

Zeng Y, Li Z, Wang Y, 2005, Study on the Influence Factors of Pit Excavation on Neighboring Subway Stations. Journal of Underground Space and Engineering, 2005(04): 642–645.

Wang L, Xu S, Wang J, et al., 2022, Analysis of the Impact of Pit Excavation on Existing Subway Tunnels in Loess Stratum. Science Technology and Engineering, 22(06): 2468–2476.

Guo Y, Yang X, Ye L, et al., 2015, Analysis of the Impact of a Pit Support Scheme on Adjacent Subway Intervals. Journal of Underground Space and Engineering, 11(03): 726–731.

Liu B, Fan X, Wang Y, et al., 2021, Research Progress on the Impact of Pit Excavation on Adjacent Existing Subway Tunnels. Journal of Geotechnical Engineering, 43(S2): 253–258.

Liu T, Xia W, 2016, Analysis of the Causes of Pile-Anchored Deep Foundation Pit Induced Subway Shield Tunnel Disease. Journal of Railway Engineering, 33(01): 109–115.

Gao S, 2023, Research on Foundation Pit Support Selection and Program Comparison of a School Science and Technology Building. Popular Standardization, 2023(06): 108–110.

Song S, 2017, Design Optimization and Construction of Deep Foundation Pit Support Structure for Beijing Subway. Tunnel Construction, 37(S1): 91–98.

Chen H, 2020, Analysis of the Impact of Oversized Deep Foundation Pit Excavation on Adjacent Subway Tunnel. Journal of Railway Engineering, 37(10): 90–95.

Li W, Luo W, 2006, Analysis of the Impact of Large-Area Deep Foundation Pit Excavation on Apartment Buildings Under Construction. Journal of Geotechnical Engineering, 2006(S1): 1861–1864.

Ren B, 2016, Construction Technology of Large Ultra-Deep Foundation Pit Support in Ancient City. Construction Technology, 47(03): 231–234.

Liu Z, Yang D, Wang S, 2010, Analysis of the Impact of Soft Ground Iron Deep Foundation Base Reinforcement Design on Settlement of Nearby Sensitive Buildings. Modern Tunneling Technology, 47(03): 39–45.