TTE149

ABSTRACT

The risk of mass removal constitutes a problem of natural origin that can be aggravated by poor

territorial planning and bad practices of human settlements. The result of this work is a mass

wasting processes susceptibility map in the locality of Queule, using the heuristic method with

susceptibility variables such as slope, soil cover, lithology and geomorphology, all this combined

with a spatial evaluation of multicriteria analysis linked to the use of geographic information

systems (GIS).

Two field trips were carried out to measure and describe the susceptibility variables, and

samples were taken from the different points of interest, where remote sensing showed mass

removal and/or deforestation. These samples were analyzed in the X-ray diffractometer (XRD),

obtaining the occurrence of clay minerals that could generate instability situations.

A quantification of the susceptibility variables was carried out, obtaining as a result that the

slope is the most important factor, followed by lithology, soil cover and finally geomorphology.

In general, the urban radius of Queule is in zones of moderate to high susceptibility. Two types

of mass removal were catalogued: landslide and rockfalls. It is hoped that the susceptibility

map will be a precedent for proper risk and disaster management based both on this model

and on exposure and vulnerability variables.

Key words : susceptibility, mass removal, X-ray diffractometer, heuristic method, multi-criteria

analysis, slope, ground cover, litology, geomorfology, clays, landslide, rockfalls, risk and

disaster management.