Yu Zhang

TL;DR: In this paper, the impact of nonlinearity of low velocity flows on the drainage design of grouted subsea tunnels was investigated by considering non-Darcy effects in the design of tunnel drainage system.

TL;DR: In this paper, the authors proposed a three-dimensional log-spiral prism model considering unsupported length to analyse the face stability of shallowly buried tunnels in sandy soil based on the limit equilibrium method.

TL;DR: This paper proposes a novel image recognition algorithm for water leakage diseases of shield tunnels based on deep learning algorithm and compares it with Otsu algorithm, Region Growing Algorithm, and Watershed Algorithm to show the effectiveness of the proposed method.

TL;DR: In this paper, a step partial excavation method model test device is presented, which solves the problems that the simulation of the existence of unknown protective sections after tunnel excavation cannot be carried out at present, the influence of unsupported sections and different lengths of steps cannot be simulated, the tunnel excavation speed and length cannot be controlled quantitatively, stratum materials are inconvenient to clean, tunnel excavation position cannot be adjusted, the impact of the change of the tunnel buried depth in a large range cannot be modeled, an additional loading device needs to be added, the height and the adaptability is poor