He explained that the surface above the compromised tunnel is currently being reinforced to support heavy machinery. Excavation and additional ground conditions assessment will follow. There is a preliminary plan to replace a 27-meter section of the concrete tunnel, reinforce it with external chemical soil stabilization and an internal metal frame. Kozak stated that the Demiivska station is the only one in Kyiv built on highly waterlogged soil, with the Lybid and Sovka subterranean rivers nearby. He mentioned that ideally, the station and tunnels should have been constructed “much deeper” in s…