Fibre-reinforced shotcrete is an essential part of the support hard rock tunnels. Due to complexity design, a combination empirical and numerical analysis commonly used in design. The required dosage fibres for structural purposes determined based on minimum energy absorption or residual flexural strength. latter derived from tests beams, while tested panels. It widely known that beams suffer l...

The empirical design of tunnel 7 the Jakarta-Bandung high-speed railway was based on Basic Quality (BQ) system, which Chinese standard rock mass classification. Due to high uncertainty a classification, comparative studies quality and support systems other classifications are commonly required. main objective this research assess excavatability at construction site propose system three widely u...

Abstract Since the safety and stability of original tunnel structure are easily affected by adjacent foundation pit excavation, it is strongly necessary to study deformation evolution tunnels during excavation. With regard two cases that adjacently located at right bottom pit, influence different supporting methods, including pile support, bolt pile-bolt shotcrete-bolt on was investigated basis...