Polevetskyy V. The Regional features of landslide protect structures (LPS) and landslides of the Chernivetska area

Dissertation work is devoted to determination of regional features of deflected mode of slide basis and LPS of the Chernivetska area (СА). The regional features of slide basis of slopes in this region are explored, and the method of engineering defense is developed for the first time. There are three basic types and corresponding to them models of development of sliding process (flow, sliding, shear) selected in the within the borders of territory of area. The biggest scale "Chernivetsky" slides are the slides of shear the surface of sliding of which passes in clays of Neogene age. Clays of Neogene age are characterized by high values of physic-mechanical characteristics. They are over-compressed. A mathematical modeling was carried out by method of the "leaned" sections by G.M. Shakhunyantsa. There is shown that the loss of firmness of landslide slope is possible without the presence of the fully formed surface of sliding taking into account the real considerable period of disturbance of gravitation equilibrium, the high values of physic-mechanical characteristics of such clays forming of sliding surface of landslide of shear, considerable sliding layers. On base of these arguments was founded the method for calculation of slopes firmness affected by the landslides of shear which is offered in work. Experimental numerical researches of engineering defense of landslides of the CА are conducted taking into account the regional feature. The recommendations for planning and building of LPS were also developed. Keywords: clays of Neogene age, landslide, sliding surface, stability coefficient, landslide protect structure, deflected mode, method, regional features.