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Título del libro: From Fundamentals To Applications In Geotechnics Título del capítulo: Stability of a slope to the filling of a reservoir, understanding the behavior of a fractured rock mass
Autores UNAM: EDGAR MONTIEL GUTIERREZ;
Autores externos: Idioma: Año de publicación: 2015Palabras clave:
Landslide; stability analysis; Finite Element Method; Water Reservoir; Limit Equilibrium
Resumen:
During the stage of reservoir filling in a dam located in the north of
Mexico, the presence of a series of cracks was reported along a
hillside. The rock mass is this slope began a process of moving at a
rate of 4 cm/day, decline until 0.5 cm/day at the last measurement step.
Due the rate of apparent continuity in the movement of the rock mass, it
was necessary to assess whether it was feasible the abrupt failure of
the slope, whose volume is approximately three million cubic meters,
which should slide surf that would provoke at risk the safety of the
dam. From a series of studies aimed at defining the geomechanical
characterization of the slope, it was possible to establish the existing
materials and geological structures, allowing the development of a
series of analysis which results provide conclusions about the behavior
of the slope to changes producing variations of the reservoir as well as
the forecast of the effects for quick emptying and an unfavorable impact
of earthquake in the area. In order to show the procedure followed and
the results obtained in this evaluation, this paper validate the
response of the numerical model through a comparison with traditional
limit equilibrium analysis is presented, allowing to define the likely
behavior of rock mass located in a geologically extensional region in
which there is a change in the stress state due to anthropogenic
activities such as the construction of a hydroelectric project
