(58a) A Worker Safety Management System Based on Worker Location and Environmental Information during Tunnel Construction

Tunnel work is an environment in which 21 types of work are frequently performed, and it is a high-risk work at the construction site. A number of situations can occur, so thorough safety management is essential. However, due to the nature of the tunnel, communication stability is poor, so it is difficult to apply the existing IT safety management method to tunnel work. Inefficient safety management is being implemented. In addition, there are difficulties in emergency rescue in the event of an accident because there is no preparation for high-noise sites, so clear work instructions cannot be delivered, and the location of workers cannot be identified.

In this study, we developed a smart safety management system based on the method of positioning workers through wearable BIE module and wireless signal transmission/reception scanner and applied it to 15 sites for about 5 years to conduct real-time tunnel construction safety management and analyze its effectiveness.

Existing one-way communication system formed a vertical relationship between managers and workers, but this system enables two-way communication between workers and workers based on mobile, developing a horizontal relationship and greatly reducing safety accidents due to lack of communication. there was. In addition, by collecting environmental information (temperature, humidity, oxygen, carbon dioxide, carbon monoxide) in the tunnel in real time, it is possible to predict danger early, and it is possible to quickly deliver an evacuation command in case of a dangerous situation, and to rescue even at a tunnel construction site with a poor mobile communication environment. It can generate a signal so that the operator can protect himself. In addition, real-time risk assessment can be carried out by conducting a risk assessment according to the work situation and immediately reflecting the direct safety check result on the server. Awareness of safety and being able to act.

In addition to safety aspects, there were economic effects such as shortening the construction period. Compared to the existing method in which the safety manager visually identified and evacuated workers for blasting, one of the main tasks of tunnel construction, the real-time worker location monitoring method through the beacon attached to the worker's helmet takes about 20 minutes per blast. As a result, the construction period was shortened by about 30 days when calculated as 36 months of 2 blasting per day.

The introduction of the smart safety system in the tunnel made more efficient and automated safety management possible. The effect of planting water on 500 groups of 30-year-old larch per year is also expected by reducing manager's field trips and paper use.