Department of Physics of Disintegration Phenomena
Alternate Head of the Department: Alexandr F.Morosov,
doctor of engineering sciences
Directions of Scientific Researches: Investigation of the phenomena of solids failure under extreme conditions; determination of the nature and mechanisms of a zonal disintegration of rocks round coal mine excavations; determination of peculiarities and mechanisms of deformation of nano-structural materials.
Summarizing and systematizing the observation of the state of preparatory excavations of deep mines and mining horizons, there have been found the factors having an influence on their stability and complicating mine workings at great depths. In the context of a non-equilibrium thermodynamics and synergetic views, the formation of disintegration zones round coal mine excavations was theoretically explained for the first time. This phenomenon is a result of the autowave character of the rock failure because of general thermodynamics of a non-equilibrium state of the system a mining excavation a surrounding massif at great depths.
It has been shown that tension and compression of molecular samples in crystallographic planes result in a quasi-periodical replacement of elastic and inelastic deformation stages.
Using the methods of the computer simulation of a similar compression and indentation of a rigid triatomic die, there has been established that depending on an intensive deformation, dislocations with micro pores have a larger conjugate angle of crystallographic planes than linear ones. They lead to the formation of greatly curved non-equilibrium boundaries and are one of the main structural elements of the nano-grain formation.
The whys and wherefores of a substantial increase of operating safety in coal mines at the account of the development
of radically new scientifically well-grounded ways and technologies of maintenance and increase of stability of preparatory excavations (slow processes of rock failure and shift at a speed of about 8-10 mm/a day).
The Donetsk Innovation Center of the Regional Government, Donetsk National Technical University.
1. A.F.Morosov, L.S.Metlov, V.I.Mordasov. Stability of preparatory excavations under a zonal disintegration of mining rocks. Part 1.-Donetsk:Donetchina, 176 (1999).
2. L.S.Metlov, A.F.Morosov, M.P.Zborschik. Pjysical bases of the mechanism of a multizonal rock failure about a mining excavation. Fiziko-tehnicheskie problemy razrabotki poleznyh iskopaemyh2, 55 (2002).
3. E.G.Pashinskaya, L.S.Metlov, V.N.Varyukhin, A.F.Morozov Structure Transformation un Copper at the Equichnnal Torsion under Pressure. Proceedings of the V. International Conference Metallurgy, refractories and Environment. Stara Lesna, High Tatras, Slovakia, (2002).