anisotropic multimodulus medium, limit equilibrium conditions, law of Coulomb - Mohr, equation of the characteristics.

There investigated limit equilibrium of anisotropic multimodulus medium in terms of ground or rock, which are ordered anisotropic strength properties. There developed limit equilibrium equation in the form of generalizations of Coulomb - Mohr’s conditions which is presented in a nonlinear manner. There obtained the condition in the voltage components and expressions for the stresses that satisfy this condition. There investigated an environment plane deformation taking into account the forces of gravity. There developed Kettera’s equation and the main characteristics of the equation.

Aliev Mekhrali Mirzali ogly e-mail: mmaliev@rambler.ru, Doctor of Technical Sciences, Professor, Head of the Department “Transportation and storage of oil and gas” Almetyevsk State Oil Institute, Republic of Tatarstan, Almetyevsk, Lenin street, 2.

Gilyazova Svetlana Rishatovna e-mail: gil.svet2011@yandex.ru, Senior Lecturer of the Department “Oil and gas equipment and technology of mechanical engineering” Almetyevsk State Oil Institute, Republic of Tatarstan, Almetyevsk.

Shafieva Svetlana Vladimirovna e-mail: shafieva_sv@mail.ru, Candidate of Technical Sciences, Associate Professor of “Oil and gas equipment and technology of mechanical engineering” Almetyevsk State Oil Institute, Republic of Tatarstan, Almetyevsk.