Application of Improved Single-Hole Superposition Theory in Nonequal Cross-Section Tunnel Intersection

<div> Results of numerical simulation and theoretical model. a<sub>1</sub>–c<sub>1</sub>: numerical simulation of 30°, 45°, and 90° intersection angle; a<sub>2</sub>–c<sub>2</sub>: theoretical model of 30°, 45°, and 90° intersection angle; (a) once the hole diameter; (b) twice the hole diameter.</div>

Advances in Civil Engineering

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Figure 12

Figure 12: Application of Improved Single-Hole Superposition Theory in Nonequal Cross-Section Tunnel Intersection 