Dudarenko A. Modeling and calculations of landslide's dangers and engineering protection of territories and objects.

The dissertation is devoted to improving calculations of the parameters of LANDSLIP 2D stability and LANDSLIP 2D pressure, the main values in the calculation of building mechanics that protect territories and objects from LANDSLIP 2Ds. Three well-known theoretical models (Maslova-Berera, Shahunianca, and Bileusha) are used as a theoretical-methodological base to create program codes for mathematical-computer modeling of LANDSLIP 2D behavior: the coefficient of LANDSLIP 2D stability, LANDSLIP 2D pressure, etc. For the creation of the new program code LANDSLIP 2D, which features a large volume of graphic representations, the object-oriented programming language JAVA was used. The mathematical modeling of litho-dynamic characteristics on the basis of program code LANDSLIP 2D includes the following three stages: 1. Using a graphics editor, we set the geometry of a LANDSLIP 2D (its surface, the sliding surface, and the depression curve) and a region is seismic conditions; 2. Using a ground editor, we set the following parameters of the ground comprising the body of a slide: the internal friction angle, the adhesion coefficient, etc. (the LANDSLIP 2D program can include up to 10 different types of grounds); 3. Choosing a mathematical model from those available, we perform calculations according to it. A comparative analysis of numerical data from the LANDSLIP 2D program and the Canadian SLOPE/W software package demonstrates a satisfactory convergence of results. In simultaneous tests of both programs, we got both exact and similar values of the coefficient of stability (with an error rate less than 5 - 3 %) on the testing examples. LANDSLIP 2D also makes it possible to determine the surfaces of LANDSLIP 2D deformation by using variation-calculation methods, and to solve other problems on a variation basis.