Dunaev A. Substantiation of parameters of protection repeatedly used drift at undermined to dredging coal layers

Parameters of the advanced constructive - technological circuit of protection reusable drift are protected at undermined to the working off of coal layers based on erection artificial is whole from hardening materials variable on width of rigidity. Work support and security it is whole it is considered as uniform interconnected and interfluence system in which parameters it is whole are the tool for formation of favorable loading on support. The force and deformation criteria providing a rational operating mode of system «support – security elements » are formulated and proved. It is established, that typical arch support with curkaling the arch has the maximal carrying ability at a parity of vertical and lateral loading in a range в=2-3 which achievement is provided with relative width of a pliable part coal stope in an interval Lп/m=0,5..0,9 at a corner of internal friction of its material Фп=30о . Dependence of a compounding of a hardening mix and a corner of internal friction of the hardened stoneis received. The complex design procedure of parameters of system «support – security elements » is developed. The basic maintenance of work is reflected in the monography and 5 articles.