left hand tunnel
Construction of a double tunnel
INDUSTRY, INNOVATION AND INFRASTRUCTURE
Build resilient infrastructure, promote sustainable industrialization and foster innovation
Economic growth, social advancement and action against the climate emergency depend largely on investment in infrastructure, sustainable industrial development and technological progress. Today, about 1 billion people live more than 2 km from a roadway, 940 million live without electricity, and 663 million lack improved drinking water sources.
ACCIONA participates in the entire infrastructure construction value chain, from the identification of opportunity, design and execution, to the operation and maintenance of the constructed works, using the most advanced and innovative techniques.
Performance quality and safety are two of the criteria that maximize the company's value proposal in the development of large infrastructure projects and that differentiate it from other competitors in the construction field.
It is a double tunnel, with the left hand tunnel being 1,030 m long and the right hand tunnel being 920 metres.
The internal route is a 1,000-metre radial curve, with a maximum interior height of 80 metres, and a longitudinal gradient of approximately 3%.
The tunnels pass through rock made of schists and marbles, affected by numerous fault lines, some of which are highly significant due to their size, such as the Frigiliana fault.
The drilling and supports for the tunnel were constructed using mechanical excavation techniques and the Bernold system in the schist zone, while the New Austrian Tunnelling Method was used in the marble zone using explosives to excavate this section.
- Location: Málaga. Spain
- Contract type: Construction
- Infrastructure: Construction of a double tunnel that is 1,030 metres long through the left-hand tunnel, and 920 metres through the right-hand tunnel, which is part of the Autovía del Mediterraneo highway.
- Year of completion of construction: 1999