Abstract: Grouting control is one of the key measures to reduce segment floating, to ensure safety and efficiency during shield tunnel construction. In this study, optimization of backfill synchronous grouting material for shield ...

Abstract: Rock bursts are disastrous when occurring during the construction of tunnels in a deep underground rock mass, and they occur under two key conditions: energy release from surrounding rocks; and fracture propagation. Based ...

Abstract: Concrete remains the most commonly used material for lining segments in shield tunnels. Extensive segment floating can easily result in segment dislocation, crack damage, and water leakage. Based on the river-crossing ...