Evaluation of explosion influence on the waterproof rocks in shaft bottom area of Gremiachinsk mining and processing plant
| Autor: | Sergei Andreiko, Valentin Maltsev, Vladimir Anikin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
lcsh:GE1-350
relative and specific distances explosion impulse Astrophysics::High Energy Astrophysical Phenomena explosion energy geometrical explosion similarity mass rate sphere and cubic blast Physics::Geophysics explosion works waterproof stratum particles displacement pressure stress acoustic rigidness of the rock blast radius lcsh:Environmental sciences |
| Zdroj: | Perm Journal of Petroleum and Mining Engineering, Vol 14, Iss 17, Pp 81-88 (2015) |
| ISSN: | 2305-1140 2224-9923 |
| Popis: | The results of analytical studies of the explosion impact on the surrounding rock massif are presented. Explosion was performed during shaft bottom sinking of Gremiachinsk mining and processing plant. Safety parameters of explosion operations are determined to ensure continuity of the waterproof stratum (WPS), represented by three salt layers interbedded with anhydrite and dolomite rocks. In the calculations of slow motion explosion of blast hole charge it was simulated by explosion of single blast equal to the mass of blast material same kind but has bigger influence on rock massif than real blast hole explosion. Following are presented: the table with explosion parameters, chart and formulas for calculation of rock particles displacement rate in the explosion wave (mass rate) in relation with distance to explosion center in meters of relative units of distance. Wherein explosion influence on rock massif of small (or the same) charge simulate geometric similarity of real big scale explosion in well or blast hole at the distance bigger than well or blast hole length. The distance from explosion center measured in relative or specific value represented as sphere charge radiuses or length of edge of cubic charge of equal to the mass of real explosion. There is between these two different systems of distance measurement the set of rules of transition from one system to another for comparison of the results of different scale explosions. In presence of transitional rules, coefficients in the formulas of explosion parameters are easily calculated depending on the distance to explosion center in particular for the most important destruction parameter of rock particles displacement rate in explosion wave. Dimensions of zones of various explosion effect on rock massif can also be expressed in any distance measurement system. It is assumed in the article that in case of analogy of physical and mechanical properties of salt field rocks it is acceptable to use experimental results of the Verkhnekamsk field for similar studies of Gremiachinskoe field. |
| Databáze: | OpenAIRE |
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