Spergau - dam protection against badger

Initial situation

Rail infrastructure must meet appropriate safety criteria to ensure smooth and punctual passenger and freight transport. With a nationwide rail network of almost 40,000 kilometers, this is a challenge. In addition to traditional engineering structures such as bridges, retaining structures and tunnels, earthworks are an essential part of the railroad infrastructure. Compared to roads, the issue of subsidence poses an even more severe problem for rail transport routes: detours are virtually impossible during rail operations, and slow speeds or even closures usually have a massive impact on the timetable.

Native burrowing animals and rodents such as beavers, nutria and badgers can be found almost everywhere in Germany. Their habitats often border directly on traffic routes. If these animals dig their burrows in dams or dykes, this can lead to subsidence, landslides or even loss of stability, depending on the extent of the cavity formation. Whether the structure is used for traffic, flood protection or other purposes, far-reaching consequences for people, nature and infrastructure are possible.