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Engineering Projects: Excavació per Projecte de Vivendes Socials, al Pas de la Casa

Geology and geotechnical


Place:

Encamp (Principat d'Andorra)


Date: 2005-2007
Excavació per Projecte de Vivendes Socials, al Pas de la Casa, Engineering (Principality of Andorra)

Excavació per Projecte de Vivendes Socials, al Pas de la Casa

The excavation was carried out under variably depending on the section along the sedimentary deposit, the area altered bedrock.

From the description of the phases and the geotechnical parameters of the formations, there is more of an instability associated with the excavation.

Which affects the area of the sedimentary and altered bedrock of a rotational landslide scar that passes through the foot of the rock contact between altered and fresh rock.

To determine the safety factor set two variables, the specific weight of the tank, 2.1 t/m3, and the geometry of the deposit.
 

The stability analysis was done using Ordinary methods, Jambu, Bishop and Price Morgenstein, and Hoeck and Bray.

The geometric characteristics of the section are a drop of 7.23 m with a horizontal angle of 90 degrees, there is a platform above horizontal.

The slope is composed of three different types, with varying powers of approximately 5.44 meters in the sedimentary deposit of altered rock 2.7 meters and 15 meters in the area of rocky substrate.

This relationship is only valid in the section of the surveys made and may suffer strong lateral variations.