Estudio de estabilidad de taludes del paso lateral de la ciudad de Macas

Abstract

This research posits to carry out the geological survey in 8850 meters in length of the lateral pathway on Macas in zone of 20 meters wide on each side of the roadside edge. In addition to areas of direct influence on civil works, as a basis for determining the slope stabilization of cutting generated by the road; It also presents unstable slopes mainly in winter times. Moreover, two settlements of the road located on the crossing of ravines. For the slopes of the soil the balance method was used through an application of the methods of Bishop and Janbú simplified and Spencer, knowing the geometry, lithology and degree of weathering, the failure surfaces of each slope were modeled, and estimate values density, cohesion and friction angle. It was considering the value ru, in the software Slide 6.0, in order to obtain a Security Factor (FS) equal to1.05 for pseudo static conditions and 1.5 static. The FS was also calculated for current conditions and with stabilization measures. For rock slopes the stability was analyzed by applying the Romana Geomechanics Classification to obtain values of cohesion and friction in the fracture planes, with this values the cinematic analysis was developed with respect to failure mechanisms in wedge and planar failure. Verifying with the Stereographic projection of structures in software Dips 5.0., the FS was calculated for failure processes and use the software Swedish 4.0 and for planar failure using Rocplane software 2.0. The results were analyzed and interpreted. It is concluded that water is the main cause of the instability, it is necessary to apply stabilization and sustainability measures to reach the F.S. that the regulations for road cuts indicate.

Keywords: GEOLOGICAL SURVEY – STABILITY OF SLOPES – LIMIT EQUILIBRIUM – SAFETY FACTOR – ROMANA GEOMECHANISCS CLASSIFICATION – CINEMATIC ANALYSIS.