Identification of the emergency condition reasons at railway lines that are in difficult geocryological conditions

Abstract

The quantity slope stability assessment is an organization based on the engineering, geological, and geophysical investigations’ analysis. The geomechanical slope’s models creation realized along with stability assessment for slopes in natural conditions and in conditions of one estimated geological element soaking and thawing. Morgenstern–Price, Bishop’s method, and Janbu’s method were the main in stability assessment. The estimation analysis allows concluding that there are two main mechanisms of sliding processes on the slope. In the first case, landslide dislocations occur in the embankment’s body. The second mechanism bases on the assumption of one estimated geological element soaking and thawing. In this case, sliding dislocations cover the whole embankment. The embankment’s displacement comes along frozen moistening loams (main straining horizon (MSH)). This main straining horizon is the base for made ground. In addition, displacement may occur because of infiltration of the surface water along well-filtering macadam in warm period. The main sliding factors at the territory are significant relief energy, low strength properties of soils during it soaking and thawing, artificial cooperation. Fine probability sliding process activation predetermines the necessity of design and engineering protection measurements organization.