The virtual shed cave rockfall monitoring and alarm system is a comprehensive, three-dimensional, and information-based monitoring and alarm system that integrates optical and electrical technology, computer software technology, information processing technology, control technology, and communication technology, with fiber optic grating sensing technology as the core. The system mainly consists of an intelligent protection network monitoring and alarm system along the railway and a landslide and rockfall monitoring and alarm system along the railway. This system eliminates information silos between various monitoring subsystems and can form a three-dimensional protection monitoring and alarm system for slope rockfall, similar to a virtual shed. Compared with GPS, infrared detection, radar, video and other technologies currently used for railway geological hazard safety monitoring, this technology is not affected and interfered by extreme weather conditions such as heavy rainfall and snow that are prone to geological hazards, as well as harsh environments such as dense fog and strong electromagnetic fields, and has unique technological advantages.

Rockfall impact protection net alarm: It can achieve real-time monitoring and alarm for rockfalls with energy greater than 10 kilojoules that impact the protection net;

Alarm for falling rocks on railway tracks or sleepers: When falling rocks penetrate or cross the protective net and land on the track or sleepers, the monitoring system installed on the track will sound an alarm in real time.