STUDY OF INREDEPENDECE BETWEEN RATE OF FACE ADVANCE AND PACE OF PRIMARY PROP SEATING FOR THE MAIN ROOF

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Parent Category: Geo-Technical Mechanics, 2013

Category: Geo-Technical Mechanics, 2013, Issue 111

UDC 622.831.27 

Stadniuk K.D. (IFGP NAS of Ukraine)

Abstract. The author defines optimal rates for the face advancing depending on the pace of primary prop seating for the main roof.

The article describes a new approach to mathematical modeling and high-precision calculation of pace of primary prop seating for the main roof in the faces of flat layers of deep mines. Results of empirical researches of pace of primary failures in Pokrovskoe Mine and A.F.Zasyadko Mine are presented. Various factors inducing main roof failure and rate of such factor impact are analyzed. Dependence between the pace of primary prop seating and face length are specified, and conclusions on optimization of these parameters are made.

Basing on the findings, the author concludes that rational longwall length is between 200 m and 280 m and rational rate of the face advancing is in the range of 3.5 - 7 m/day, and also states that dependence of advancing rate and longwall length on the pace of primary prop seating is 2-3 times less when the roof includes a thick sandstone.

Keywords: step planting of the main roof, the velocity of the working face, method of the group accounting of arguments, the degree of influence of factors.

References:

1. Avershin, A.G. (1975), Sdvizhenie gornykh porod pri podzemnykh razrabotkakh [Displacement of rocks by underground minings], Ugletechizdat, Moscow, Russia.

2. Baklashov, I.V., Kartozia, B.A. (1975), Mekhanika gornykh porod [Mechanics of rocks], Nedra, Moscow, Russia.

3. Batugin, S.A. (1963), Definition of deformations of rocks at a moving clearing face - Abstract of D. Sc. dissertation, Underground mining, Prokopevsk, Russia.

4. Muller, R.A. (1973), Definition cartoons of displacement and speeds of deformation of a terrestrial surface at a moving face, Sdvizenie gornykh porod [Displacement of rocks], The collection no. 98, Works of VNIMI, Leningrad, Russia.

5. Petukhov, I.A. (1978) The main directions of researches in the field of displacement of rocks, Sdvizenie gornykh porod [Displacement of rocks], The collection No. 98, Works of VNIMI, Leningrad, Russia.

6. Sdvizhenie gornikh i zemnoy poverkhnostey pri podzemnykh razrabotkakh [Displacement mountain and a terrestrial surface by underground minings], in Bukrinsky V.A. [ed.] (1984), Nedra, Moscow, Russia.

7. Viktorov, S.D., Iofis, M.A. and Goncharov S.A. (2005), Sdvizhenie i razrushenie gornykh porod [Displacement and destruction of rocks], in Trubetskoy K.N. [ed.], Nauka, Moscow, Russia.

8. Kravchenko, V.I. (1975), Bezopasnost pri upravleniy gornym davleniem v lavakh pologikh plastov [Safety at management of mountain pressure in lavas of flat layers], Nedra, Moscow, Russia.

9. Davidyanzc, V.T. and Kozelev, V.L. (1960), Izmerenie proyavleniy gornogo davlenia na shakhtakh donetskogo basseyna [Measurements of manifestations of mountain pressure on mines of the Donetsk pool], Ugletechizdat, Moscow, Russia.

10. Dubov, E.D. (1967), “Researches in mine conditions of interaction mechanized krepy with lateral breeds on flat layers of the Donetsk pool”, Abstract of D. Sc. dissertation, Underground mining, Donetsk, Ukraine.

11. Medvedchuk, N.D. (1968), “Influence of speed of a podviganiye clearing on manifestation of mountain pressure when dredging coal layers”, Abstract of D. Sc. dissertation, Underground mining, Donetsk, Ukraine.

12. International conference on mountain pressure (1958), Liege, Translation from French, Ugletechizdat, Moscow, Russia.

13. Lobkov, N.I. (1985), “Determination of  key parameters of management by a roof when developing layers in difficult conditions of deep mines of Donbass”, Abstract of D. Sc. dissertation, Underground mining, Donetsk, Ukraine.

14. Lobkov, N.I. (2001), “Research of influence of speed of a podviganiye for work of a clearing face”, Science – life – production, Krasnoarmeysk, Ukraine, pp. 28-30.

15. Kolchik, I.E. (2006), “Influence of speed of a podviganiye of a lava on convergence of breeds in drift”, Geotehnologii i upravlenie proizvodstvom XXI veka [Geotechnologies and production management of the XXI century], vol. 1, Donetsk, Ukraine.

16. Zborshik, M.P., Ilyashov, M.A. and Halimendikov E.N. (2007), “Temporary pressure and ways of reduction of its negative influence on stability of clearing developments”, Geomechanics of underground mining of coal layers, DonNTU, Donetsk, Ukraine.

17. Mustafin, M.G. (2008), “Influence of speed of a podviganiye of a clearing face on dynamics of destruction of breeds of a roof of coal layer”, The collection of the mountain it is information – the analytical bulletin, vol.1, pp.17-22.

18. Ilyashov, M.A., Halimendikov, E.N., Lobkov, N.I., Sergienko, A.I. and Kutcerubov V.M.(2008), “Assessment of influence of speed of a podviganiye of a clearing face on containing lateral breeds”, Coal of Ukraine, vol.4, pp.11-13.

About the authors:

Stadniuk Kateryna Dmitrivna, Post-Graduate Student, Institute of Physics of Rock Processes of  under the National Academy of Sciences of Ukraine (IFGP NAS of Ukraine), Donetsk, Ukraine.

 

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