Scientific journal
Scientific Review. Geographical Sciences

Personal portfolio

THE INFLUENCE OF MINING AND GEOLOGICAL FACTORS ON THE STABILITY OF ROCK OUTCROPS IN THE PRELIMINARY DEVELOPMENT ON THE STAGE OF THEIR REALIZATION

Гриб Н.Н., Кирейченков А.А., Кузнецов П.Ю.
The article represents original investigations of studying the influence of mining and geological factors on the stability of rock outcrops under the circumstances of preliminary development on the mines of South Yakutia. The investigations were held on the depth of 100 to 400 meters and included the following methods: drawing of rock falls; the calculation of the layers’ thickness and interstratified rocks which make the roof; measurements of the geometrical parameters of the output in the roadway on the place of fall together with the calculation of the zones of rock fall, calculation of the stable condition time of the outcrop of the roof rock till the lack of stability. According to the results of earlier works and of the accumulated statistic materials the basic lithologic types of rocks were defined. The peculiar types of South Yakutia fall rocks which cause the violation of stability of the roof mines were determined. The dependence of stable condition time on the thickness of the seam and lithologic type of the rock were also found out. The obtained results allow the authors to conclude the following: the existing recommendations of increasing the stability of rock outcrops functioning now can’t give the necessary information for the well-timed accurate definition and taking measures for increasing the stability of mines situated on the territory of South Yakutia.