STABILITY ANALYSIS OF FINE SOILS FROM A ROAD PROJECT, M32 SAMARA - SHYMKENT (RUSSIA - KAZAKHSTAN)

Abstract

Generally, the soil is considered to be a material strong in compression but weak in tension, while the stability of fine soils is an essential prerequisite to ensure the safe operation of road transport. The stability of soils analysis is routinely performed by engineers to evaluate the stability of embankment dams, road embankments, river training works, excavations, and retaining walls. In frozen regions of Russia and Kazakhstan, roads may promote shallow landsliding, gully formation, or headward channel migration through interception of subsurface flow along with the road cut and concentration of flow on particular areas below the road, while shallow landslide hazards in soil slopes usually happen, which pose a serious threat to road safety operations. The research goal of this paper is to conduct field observations and numerical simulation tests and stability analysis to investigate the soil strength and stability of the geotechnical engineering system. The research object of this paper is the road engineering M32: Samara - Shymkent (Russia - Kazakhstan). The results show that under the same simulation conditions and an increase in surface roughness and inhomogeneity of soil particles, the dynamic stability of the slope increases. This article presents the basic engineering properties with an emphasis on design strength parameters of soil together with the stability analysis results considering the unsaturated condition.