Mayevs'kyj O. Advanced methods of rock mass control based on moistening of the coal seam

Object of research - interaction of a superficial - active substance solution with coal substance. The purpose of research - interaction peculiarity and spread determination of SAS water solutions in system "coal - gas" by development of a high pressure wetting parameters for operating of a rock massif condition. Methods of research - in the dissertation the complex method of researches the including analysis and synthesizing of works by study of a coal seam condition operating, including processes of a coal seam wetting by a SAS water solutions , laboratory and mine researches of a coal porosity and features of solutions attraction with coal substance, development and experimental check of a solutions forcing new method is used. Theoretical results and the novelty - determined, that the coal gas-kinetic characteristic at gassing and degassing have a hysteresis and at pressure of gas exceeding 8,0 МПа, the degassing time exceeds time gassing; the influence on the gas-sated coal by a SAS solution at pre ssure 10 and more MPa is accompanied by irreversible introduction intertitial volume of gas in structure of coal substance and closed porocity, that lead to increasing of a coal sorptive capacity in 1,4-1,6 times; at expansion of SAS solutions in a coal seam take a place sorptive interaction itself SAS with coal, which size makes of the order 70 % coal sorptive capacity on gas; the hydroprocessing by a SAS solution is made by solutions with varied concentration from 0,5 % and volume of a submitted liquid not less than 1/3 from settlement with its following reducing to 0,1%. Practical results and the novelty consists in development of parameters of a stepwise SAS solution submission method for a coal seam with the purpose of its effective wetting. Subject and degree of introduction - the basic results of work were included in the branch normative documents. Range of application is intended at mines and R&D institutes of Ministry of Coal Industry.