ABOUT
The scope of work was the rehabilitation and stabilization of 30 slopes (totalizing 2,6 kilometers ) located at Tua railway, between kilometre 21+200 (Brunheda) and 54+100 (Mirandela) in Northeast of Portugal, to provide a safer operation of the railway.
It was developed a geological and geotechnical characterization of the slopes. The data were then processed using DIPS software (RocScience ®), followed by stability analysis and the definition of the reinforcement solutions using the software according to the failure modes, e.g. Slide and Swedge (RocScience ®) and GEO5 (Fine ® ).
The phenomena of instability were generally related to the rock falls (plaine, wedge and toppling failures, etc.) or landslides (disintegration of rocks).
30
slopes
Slope
stabilization
This project included the following activities: local inspections, topographic surveys, evaluation, and characterization, diagnosis and the engineering solutions definition. The environmental, patrimonial and natural beauty of the landscape had a significant impact on the design.
The main works were:
- Steel wire meshes (draped mesh, draped mesh with cable-net and a nailed mesh reinforced with cables)
- Rock Bolts
- Rock support
- Shotcrete with nails
- Protection against erosion due to rockfall
- Cut slopes
- Deep drainage (geo-drains)
- Improvement of schists masonry walls
- Gabions walls
