As severe urban overcrowding is trending worldwide, many underground development projects are being carried out in metropolitan centers worldwide. South Korea has experienced problems such as aging underground facilities and inaccurate information management due to rapid urban development since the 1970s and 1980s. Accident prevention has become a major challenge since accidents in underground spaces have occurred due to various causes.As severe urban overcrowding is trending worldwide, many underground development projects are being carried out in metropolitan centers worldwide. South Korea has experienced problems such as aging underground facilities and inaccurate information management due to rapid urban development since the 1970s and 1980s. Accident prevention has become a major challenge since accidents in underground spaces have occurred due to various causes.Engineering[#item_full_content]