To provide flood protection for transportation tunnels, engineers aim to use a relatively cheap inflatable plug to hold back floodwaters, one that is strong and durable despite the pliable, light-weight materials required.
To provide flood protection for transportation tunnels, engineers aim to use a relatively cheap inflatable plug to hold back floodwaters, one that is strong and durable despite the pliable, light-weight materials required.
To provide flood protection for transportation tunnels, engineers aim to use a relatively cheap inflatable plug to hold back floodwaters, one that is strong and durable despite the pliable, light-weight materials required.