ABSTRACT
To assess the environmental safety of subways, it is necessary to take into account a number of key criteria that will help ensure the sustainable functioning of these systems. Environmental safety criteria, especially the hydrogeological criterion, should be regularly reviewed and updated in accordance with the latest scientific research and technological advances. This will provide an opportunity for adaptation and continuous improvement in response to changing conditions and new challenges. The application of these criteria will help not only to reduce the negative impact of subways on the environment, but also to increase their efficiency and convenience for staff and visitors, thereby contributing to the sustainable development of urban transport systems. One of the most dangerous types of environmental risks at underground metro facilities, leading to a significant decrease in environmental safety, are hydrogeological risks, which manifest themselves in the form of the formation of defects in the bearing structures of workings such as fistulas, leaks, outflows of water masses and soil into an underground facility, water breakouts and quicksand, etc.
