Multisource monitoring and early warning system of rock burst in the Gaoloushan deep-buried tunnel

Abstract

The Gaoloushan tunnel is a two-hole, deep-buried, extra-long rocky cross-ridge tunnel with a maximum depth of approximately 1,680 m. Due to the dual effects of tectonic stress and self-weight stress field, 90% of the tunnel body is subject to extremely high-stress and high-stress, and strong-moderate rock burst likely occurs in hard rocks, such as metamorphic sandstone and schist. To prevent human casualties and equipment damage caused by rock burst, this article investigates the layout of the multisource monitoring and early warning system for disasters in the Gaoloushan deep-buried tunnel. Early warning methods for potential destructive disasters and other ground pressure phenomena are also proposed by adopting important monitoring methods, such as microseismic monitoring, electromagnetic radiation monitoring, ground sound monitoring, surrounding rock stress monitoring, and acoustic emission monitoring. Therefore, this study has important significance and engineering application value for the prevention and control of rock burst disasters in deep-buried long tunnels.