Autoreferat

Now on a level of a traumatism in a coal industry Ukraine is one of first among developed coal-mining countries of the world. At a solution of a problem of drop of a traumatism as a whole, we shall pay attention that for many years (decades) by quantity of accidents the dangerous production factor landslides and breaking-downs resistantly takes the first place in Ukraine.

On many shafts where on natural environments there are no breeding fires, dust explosions, sudden outbursts of coal and gas, explosions of methane-air mixtures, the traumatism from breaking-downs exceeds 50 %. Let's consider the analysis of a traumatism on an example of development of a layer h8 in conditions of shaft " Advance " on a technique [1].

Shaft " Advance " is isolated enterprise GP " Торезантрацит ", is located in terrain of city Toreza of Donetsk range of Ukraine. The shaft is handed in operation in December 1973 years with full capacity of 1800 thousand tons annually. The scheme of preparation - panel, mining method - the lengthy piles to the rise. The shaft develops a layer h8 "Fominsky" by power 1,1 - 1,35 m with an angle of incidence 4-100.

On a degree of danger on gas, the shaft is referred to II grade. On sudden outbursts and coal dust explosibility - not dangerous. The layer h₈ in Torez-Snegnoe at geology-industrial environment falls into to figure of the most potent and mellow, he on the considerable area (a part, boreal and austral syncline slopes) is already fulfilled. The immediate roof of a layer is submitted by siltstones sandy-argillaceous (440 %), clay (30 %) and sandy (30 %). Structural limit on squeeze variates from 213 up to 1026 kg / sm², at average value of 511 kg / sm². The main roof is submitted predominary by slate sandy, and to a lesser degree clay and sandy-argillaceous siltstones. Siltstone sandy on the strength properties (706 kgf / sm²) falls into difficultly обрушаемым to breeds, but taking into account availability of a fracturing and sharp contact pieces on layers should consider it.

caving in (А2). It is known, that on each shaft, in a production association on a coal mining, Минуглепром Ukraine the figure of accidents variates completely irregularly.

In theory probabilities are the common decisions, directed on definition of such sample size which ensures minimum error amount. But in a branch of the mining science relating an occupational safety and requiring of the prime solution, there are, for example, problems of definition of figure of the accidents necessary for a reliable assessment{evaluation} of change of their figure in the course of the year, separate months or change of a traumatism under the fixed dangerous factor in what or a restricted span. Concrete numerical solutions for the similar problems called as him{it} while no, therefore it is offered problem solving of called type [1] following methodical method. At the first stage the general underground traumatism for the last ten flying is calculated and the traumatism for the first and last five flying is compared among themselves. If he differs no more than on 5 %, calculation for a five years' span is hereinafter conducted. [1]

From table 1 it is visible, that the traumatism for the first five flying on 27,8 % is more, than for the last five flying, but calculation we shall conduct all the same on the last five-tap hole as, there is a tendency of reduction of production. For many years the analysis of a traumatism in a coal industry executed{designed} МакНИИ. It was marked, that approximately 80 % н/с from breaking-downs descended on the organizational causes. Doubting of a regularity of such breedings, came to necessity to formulate as prime for branch a problem drop of a traumatism from breaking-downs and in this connection acceptance of error engineering solutions causes a traumatism on a considered dangerous production factor. DonNTU, it is especially awake in the last 10 flying, persistently experimentally proves, that in the basis of a nature of a traumatism from breaking-downs there are stratifications of roof rock of productions under action of strains of the genetic return developing at unload, in personally, at a drivage after strains of recovery [2].

The stratification is perceived as education of systems of the technological cracks oriented in bridge to planes of a bedding. The mass to become with combination of the separate parallel plates crossed with natural cracks, and practically irrelevants one another.

At the further probe of a nature given the phenomena we plug the analysis under data of special investigations of circumstances in which there were the breaking-downs of roof rock accompanied with a fatal traumatism as similar events are investigated most carefully and specially built commissions.

Thus, in the basis{fundamentals} of a traumatism from breaking-downs there are the strains of genetic return showing at unload - a drivage, depending on natural tendency to nymas of the different breeds containing coal layers, and from technology of development last. For conservation of resistance of productions, it is necessary to orient not by drop of pressure{voltage;stresses} on their circuit, and on change of a directivity of strains of genetic return which considerable proportion will not be then essentially to influence safety of parameters of a lateral section of productions.

At the substantiation of engineering solutions, directed on an avoidance of a traumatism from breaking-downs on achievement of resistance of productions not at the expense of intensifying fix, and for couples of application of technological solutions (realization of compensatory niches{wells} and trenches).

Рисунок  1 - обрушение породы из кровли выработки (10 кадров, 10 циклов, 163 kb)

Bibliographic list

1. Nikolin V.I., Mordasov V.I., Savchenko P.I.substantiation of minimum figure of accidents, a sufficient traumatism for the reliable analysis // Informations of a college of mines, 1999г, №2 - seconds 41-44.

2. Nikolin V.I., Мордасов V.I.Podkopev S.V.traumatism from breaking-downs on shafts of software "Снежноеантрацит", as inquest of a stratification of breeds in времени. // the Collection of proceedings of X international conference scientific школы. // Simferopol, Taurian нац. University him{it}. Vernadsky - 2000г., page 95-96.

3. Николин V.I.forecasting of a traumatism and engineering solutions on his{its} reduction by shafts of software "Снежноеантрацит" // Изв. A college of mines - 1999г., №3, page 18-22.

4. Drop of a traumatism from rock pressure manifestations. Nikolin V.I., Podkopaev S.V., Agathons А.В., Maleev N.V. - Donetsk: "North - press" 2005г - seconds 283-292.