Haijian Su

TL;DR: In this article, the authors analyzed the influence of shear processes on nonlinear flow behavior through 3D rough-walled rock fractures and found that the relationship between the volumetric flow rate and hydraulic gradient can be well fit using Forchheimer's law.

TL;DR: Considering the uncertain characteristics of water inrush in karst tunnels, the set pair analysis (SPA) method was newly applied in this study for risk assessment of Water inrush.

TL;DR: In this article, the authors investigated the physical and mechanical properties of sandstone containing fissures after exposure to high temperatures, and the results showed that, with increasing temperature, the volume of sandstones increases gradually while the quality and density decrease gradually, and sandstone remains basically unchanged while the brightness increases markedly when the temperature is higher than 585°C.

TL;DR: In this article, a series of water flow tests through both intact and fractured samples were conducted in a triaxial cell under different confining pressures (10-30 MPa) and varying inlet hydraulic pressures (0.4-6 MPa).

TL;DR: In this article, a three-dimensional numerical model was established for Wuzhuling Tunnel of Zhuji-Yongjia Highway in Zhejiang Province, China, where the dynamic processes of tunnel excavation were simulated through the fault fracture zone.