Fam V. The good grounds of the underground ripping loosening safety parameters, in the time destroying of the mining rocks and shaft houses by the open method.

Subject of research - explosive rupture of rock and building structures in a close area using the open method Goal of research - theoretical summary and scientific/technical justification of safe parameters of camouflet blasting in rupture of rock and building structures. Used a complex research method, physical modeling of the explosive charges blasting process, laboratory investigation of blast-hole charges camouflet blasting using standard equipment, commercial approbation. The most important scientific results: a peculiar property of the process of toxic nitrogen oxides generation in a blast-hole has been discovered: this process ends before rock or building mass around the blast-hole starts rupturing; it has been discovered for the first time experimentally that using camouflet blasting of blast-hole charges; iIt has been proved for the first time experimentally, that it is necessary to take into account that part of wellhead loose tamping that does not get packed in a blast under the influence of the discharge wave of blasted charge. Besides, the dependence of its length estimation upon the filling thickness of tamping, the blast-hole cross-section and the line of least resistance was determined, too. Practical importance of the research results lies in development and justification of safe parameters of the method of rupture of rock and building structures using camouflet blasting; development of methods for prediction of the toxic nitrogen oxides output in the explosion product of a blast-hole charge The novelty of the research results lies in a more comprehensive study of peculiarities of toxic nitrogen oxides generation in a blast-hole when using explosive materials with zero oxygen balance, development of scientific knowledge about the 'camouflet blasting of blast-hole charges' mechanism and about indirect influence of rigidity of ruptured rock upon the quantity of toxic gases generated during the explosion. The research results can be useful for underground structures and railway, in accordancew ith coal industry, for educational purposes when training mining engineers and mining/construction engineers.