Tenders Are Invited For Works For Complete Or Part Construction And Civil Engineering Work – Rock And Slope Stabilization In Mauel Route 2651, Km 59,345 | Construction Work Kib

Works For Complete Or Part Construction And Civil Engineering Work – Rock And Slope Stabilization In Mauel Route 2651, Km 59,345 | Construction Work Kib. Rock And Slope Protection In Mauel Route 2651, Km 59.345 Deutsche Bahn Is Planning To Secure A Rock And Slope Embankment At Risk Of Falling Rocks Along Db Route 2651 (Cologne-Deutz - Berzdorf) In The Section Between Railway Km 59.344 And Km 59.387, South Of The Mauel Tunnel. This Is A Single-Track, Electrified Main Line With Passenger And Freight Traffic, Which Runs In The Windeck-Nord – Windeck-Süd Section. In The Course Of Special Assessments Following Several Rockfall Events, It Was Determined That The Affected Rock Section Exhibited Significant Instability As A Result Of The Weathering Of The Sandstone And Unfavorably Oriented And Partially Wide-Open Fissures. These Geological Structures Promote Both Sliding And Tilting Movements Of Individual Rock Bodies. In Addition, Freeze-Thaw Cycles And Root Pressure From Vegetation Have A Destabilizing Effect And Promote The Progressive Softening Of The Rock. Fresh Traces Of Detachment And Recent Fall Events Were Documented In Several Places, Which Repeatedly Impaired The Operational Safety Of The Route. Based On The Geotechnical Assessment And The Stability Analysis, Securing The Rock Section Is Recommended. It Is Planned To Install A Rockfall Protection Fence And Two Rockfall Protection Nets With A Collecting Apron In Order To Permanently Protect Railway Operations From Danger From Falling Rocks.