Abstract
Behavior of rock mass in the intersection between adit and major tunnel is a complicated three-dimensional problem, the increasing support load and additional tunnel deformation may endanger tunnel stability during construction. To understand the deformation behavior of rock mass in the intersection, a 3D numerical analysis was conducted. Comparing the monitoring data, the distribution of the plastic zone, the extrusion displacement of working face and the deformation of the sidewall in the adit and major tunnel were studied. Following analysis results, the distribution and potential influenced area of the intersection in the adit and major tunnel were analyzed. The principle of detection and reinforcement in the intersection were also discussed.
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Liu, Hl., Li, Sc., Li, Lp. et al. Study on deformation behavior at intersection of adit and major tunnel in railway. KSCE J Civ Eng 21, 2459–2466 (2017). https://doi.org/10.1007/s12205-017-2128-y
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DOI: https://doi.org/10.1007/s12205-017-2128-y