The diagenetic environment and geological conditions in the west are special, and weakly
cemented rocks with low strength, poor cementation and well-developed fissures are widely …

Water inrush disaster occurs easily when the tunnel is close to the water rich fault fracture
zone. To clarify the disaster evolution process and the critical thickness of the water-resistant …

In order to study the mechanics response law of lager span and small interval tunnels during
the construction process, this paper took the Jinan Southeast Second Ring Engineering …

Fracture toughness is an important fracture mechanics parameter of rocks, the double K
criterion can reasonably explain the fracture mechanism of rocks. To investigate the fracture …

The water-filled karst cave in karst area as the disaster source is the energy storage
structure of water and mud inrush disaster. Under the strong disturbance and high water …

Tunnel excavation unloading is the primary factor in disasters such as collapse and large
deformations of surrounding rock. Therefore, it is a key issue to study the deformation …

Optimizing blasting parameters is a crucial and challenging aspect for mines to enhance
production efficiency and ensure safe operations. Effectively controlling the distribution …

A novel transient unloading testing system was adopted to simulate the transient excavation
of tunnels under different lateral pressure coefficients (k 0). The results show that the …

Ensuring the stability of surrounding rock while conducting pressure relief is key to roadway
stability control and preventing rock burst. In this paper, segmented enlarged-diameter …

Highlights The numerical simulations for the evolution of water inrush are divided into three
stages: karst origin, structure instability, and inflow of water and rocks. A staged review of our …