How to prevent Metro from water and flood? Metro underground water flood control barriers are structures designed to prevent water from flooding underground metro tunnels and stations. These barriers are typically made of steel or concrete and are installed at the entrances and exits of metro tunnels and stations. They are designed to withstand high water pressure and prevent water from entering the underground space. The barriers work by creating a physical barrier between the underground space and the water source. They are typically installed in a way that allows water to flow around them, rather than through them. This allows the water to be diverted away from the underground space, preventing flooding and damage to the metro system. Metro underground water flood control barriers are an important part of any metro system's infrastructure. They help to protect the system from the damaging effects of flooding, which can cause signifi…