Support section with positive locking

摘要

Support sections having, for example, a double-T-shaped or box-shaped cross-section and supported by props with standardised crown heads are used in particular to secure the face/roadway transition area. To avoid the displacement of support sections of this type during mutual crosswise underpinning, profiling (5) is provided on the flanges (1, 2) of the support section continuously at least in the longitudinal direction. <IMAGE>