Villalba collector

Villalba main collector

The project of the Villalba main collector was developed to improve the sewage network in this residential area. The construction of this tunnel made it possible to optimize wastewater disposal and reduce environmental impact through the use of advanced excavation technologies.

Thanks to the use of an EPB segment lining machine DN2760 shield modified for rock, it was possible to drill hard granite soils with a resistance of 120 MPa, guaranteeing the stability of the infrastructure and minimizing surface vibrations.

General project details

Location: Villalba, Spain
Main objectiveConstruction of the main sewer to improve the sanitation system.
Geological conditionsHard granite of 120 MPa.
Technology usedEPB shield DN2760 modified for rock.

This project responds to the need to modernize the area's subway infrastructure, ensuring proper wastewater management without affecting the urban environment.

Technical specifications

Nominal diameter: 2,760 mm.
Method usedExcavation with EPB shield and prefabricated segments.
Excavated landHard rock.

The use of specialized technology made it possible to perform the excavation with precision in an environment with significant geological challenges.

Logistics and technical challenges

The development of the collector required detailed planning due to the proximity of critical infrastructure in the area, such as railroad tracks and the Guadarrama River.

Project highlights

Excavation parallel to a railway line and the Guadarrama riverThe impact on transportation operations is minimized.
Use of specialized machinery to drill high-strength rock without compromising surface stability.
Optimization of the sanitation systemThe drainage capacity is increased and the risk of seepage is reduced.

Environmental and social impact

The Villalba main sewer not only improves the sanitation infrastructure, but also contributes to the sustainability and quality of life of the community.

Protection of the natural environmentControlled excavation to avoid alterations in the ecosystem of the Guadarrama River.
Efficient and sustainable infrastructureDesigned to withstand high pressures and guarantee optimum performance.
Benefit for residentsImproved sanitation network and reduced risk of water supply incidents.

References of executed works

In Eurohinca we are specialists in the execution of tunnels for pipelines with tunnel boring machines. Since its foundation in 1996 Eurohinca has executed different types of works:

International Experience