PECULIARITIES OF SLOPE STABILITY CALCULATIONS UPON THE FORMATION OF A NEW LANDSLIDE BLOCK  

Postoev G.P.¹, Kazeev A.I.¹, Kuchukov M.M.¹ 

¹Sergeev Institute of Environmental Geoscience RAS (IEG RAS) Ulansky per. 13, bld. 2, Moscow, 101000
 

Upon preparation of a new landslide block in the bedrock massif, the dissipative geological structures (DGS) appear in accordance with physical and geological regularities of geoenvironment functioning in the source area of landslide development. Separation of the block occurs as DGS detachment along its boundary (shell) with breaking of structural bonds in soil and subsequent rotational displacement of DGS-block (within the shell) along the resulting sliding surface as a landslide massif. The comparative calculations of massif condition assessment in preparation of the block as DGS and by existing methods of stability calculation (in particular, in the program Geostab) were analyzed. The use of the mechanism and regularities of the DGS block preparation in the assessment of the massif state allows increasing the accuracy and reliability of the calculation procedures.  

Key words:  dissipative geological structures, stress-strain patterns, limit state, stability criteria, stability calculations, dgs and shear schemes

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