Containment structure
The containment structure is a coastal infrastructure proposed as a complementary measure within the setback strategies analysed in the LIFE Adapt Cala Millor project. Its function is to help reduce wave impact and promote beach stability in the most vulnerable sectors of the coastal front.
In the alternatives assessed, this measure is not proposed in isolation, but in combination with other actions, such as the setback of the seafront promenade, vegetated topography, or the berm park. In this way, the containment structure forms part of a broader strategy for adapting the beach-urban frontage system.
Containment structure options assessed
Within the framework of the project, different containment structure configurations have been analysed for the northern area of Cala Millor. These options aim to reduce wave energy and promote beach stability in the sector where the physical constraints of the coastal front make the application of other measures more difficult.
| Identifier | Type of solution | Description | Main characteristics |
| EC#01 | Short groyne | Short groyne with access elements and bathing use. | A shorter, moderately scaled solution, capable of combining a protective function with social use. |
| EC#02 | Long groyne | Long groyne with 150 m emerged and 150 m submerged. | A longer solution aimed at modifying coastal dynamics and promoting greater sediment retention. |
| EC#03 | Tombolo | Tombolo designed to promote sediment accumulation and reduce wave energy. | It may generate a sedimentary connection with the beach and more intensely modify the morphology of the coastal edge. |
Diagrams of the assessed options
The following diagrams show the conceptual configuration of the three containment structure options analysed for the northern area of the bay.
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EC#01 · Short groyne
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EC#02 · Long groyne
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EC#03 · Tombolo
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Integration criteria
The design of this measure must consider not only its hydraulic function, but also its relationship with the landscape and the habitats present in the bay. For this reason, the project proposes that, if developed, the containment structure should be integrated in a way that is compatible with the surrounding environment and the social uses of the coastal front.
Its final definition will have to assess both its effectiveness and its environmental compatibility, especially in an area where ecological values, urban uses, and complex coastal dynamics converge.