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Vol 149
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Regularities of mine workings deformation at dynamic forms of rock pressure manifestations

V. L. Trushko1
A. G. Protosenya2
Yu. N. Ogorodnikov3
O. V. Kolosova4
About authors
  • 1 — St. Petersburg State Mining Institute
  • 2 — St. Petersburg State Mining Institute
  • 3 — St. Petersburg State Mining Institute
  • 4 — St. Petersburg State Mining Institute
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Field observations of the displacement of rocks around the preparatory and cleaning workings (operations) of SUBR mines (shafts) establish the effect of stratification of the roof of workings (operations) and cleaning chambers under the action of seismic waves. The shifts are traced to a depth of up to 4 m, and almost instantaneously, at the moment of the rock impact. When modeling the process of interaction of a flat straight wave with workings (production) of rectangular, vaulted and shapes of cross-section, it is shown that the probability of reaching the limit state of the host rocks due to the maximum difference in the main pressure (stress) is higher in workings (production) of rectangular and more shapes. Based on the revealed dynamics (changes) of seismic pressure (stress) and regularities of deformation of the host rocks, the design of reinforcement (strengthening) of the roof of chambers and joints of excavations (workings) with deep reinforced concrete anchors was developed.

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  1. Геомеханика массивов и динамика выработок глубоких рудников / В.Л. Трушко, А.Г. Протосеня, П.Ф. Матвеев, Х.М. Совмен; Санкт-Петербургский горный институт. СПб, 2000.

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