Development and evaluation of a virtual training system for tunnel blasting

The thesis investigated the development and evaluation of a virtual blasting training (VBT) system for underground tunnels. This thesis aims to explore the application status and research gaps of virtual training in tunnel blasting based on previous studies. On this basis, a VBT system for tunnels is developed and evaluated. This system is based on 360-degree images of a tunnel blasting simulator in the Under-ground Research Laboratory of Aalto University (URLA) and blasting course materials. The system adopts a dual platform architecture mode and utilises ThingLink and 3DVista Virtual Tour Pro software to develop six blasting scenarios. ThingLink was used for safety induction, while 3DVista Virtual Tour Pro was used for more complex blasting program training. For example, blasthole type and placement, charging and fuse connection, blast area sealing and safety protocols, blast initiation and risk management. The system was evaluated through feedback and questionnaires from a blasting expert and 10 users. The results indicate that the VBT system improved participants' understanding of blasting safety, blasting procedures, and risk management. Research has shown that VBT system is a feasible and effective auxiliary tool for underground blasting training.