Abstract
The present now normative and information base is regulating of the Kuzbass coal seams treatment but is not considering of the mining-geological and mining-engineering conditions for new coal deposits. The analysis of works for the research of the rock pressure manifestation shows that in many cases numerous results require of the practical confirmation in mine conditions directly, and also confirmation by the physical models. This work reflects one of the stages of research on changing the stress-strain state of the massif with the formation of unloading zones, increased rock pressure, and recovery. As an example, the results of the information analysis obtained by means of contour and depth benchmarks on the ventilation drift in the course of the 34 seam treatment at the “Tagaryshskaya” mine are presented. The differences of the analyzed results from the results obtained in the conditions of other mines are established. The values of the drift's roof stratification on the contour and at the distance from the contour of 1.0 to 4.0 m are given. The revealed maximums of the rock pressure and pressure changes in the hydraulic supports of the complex used for movement are presented. Recommendations on the choice of the anchor's length taking into account the roof stratification size are given. The further research stages on models from equivalent materials at various geometric scales are proposed.
Highlights
In the “Guidelines for the rational treatment of sequence of closed steep and steeply inclined seams of Kuzbass”, developed by VNIMI, which have actuality this time, the mininggeological and mining-engineering conditions for new coal deposits (Erunakovskoe, Kazankovskoe etc.) are not taken into consideration
To compose of the same normative document for these deposits, it’s necessary to have mine and laboratory researches in accordance with terms of similarity under simulated testing of the seams on the physical models, including of the stress-strain state researches for the preparatory mine workings
* Corresponding author: oleg_lyubimov@mail.ru possible to use the results of the mine preparatory working’s roof stress-strain state researches for the choice of the anchor’s length, which exceeds the roof stratification size, and for the practical registration of the rock pressure and pressure changes in the hydraulic supports applied to specific conditions
Summary
In the “Guidelines for the rational treatment of sequence of closed steep and steeply inclined seams of Kuzbass”, developed by VNIMI, which have actuality this time, the mininggeological and mining-engineering conditions for new coal deposits (Erunakovskoe, Kazankovskoe etc.) are not taken into consideration. To compose of the same normative document for these deposits, it’s necessary to have mine and laboratory researches in accordance with terms of similarity under simulated testing of the seams on the physical models, including of the stress-strain state researches for the preparatory mine workings. There are no clear recommendations on the choice of the anchor’s length taking into account the formation of zones of the increased rock pressure in domestic and foreign practice now. There are no clear recommendations on the choice of the anchor’s length taking into account the formation of zones of the increased rock pressure in domestic and foreign practice In this regard the rock pressure manifestation researches in domestic conditions and abroad are carried out by complex method, including analytical part, the mine development modeling and the full-scale mine researches. It’s possible to use the results of the mine preparatory working’s roof stress-strain state researches for the choice of the anchor’s length, which exceeds the roof stratification size, and for the practical registration of the rock pressure and pressure changes in the hydraulic supports applied to specific conditions.
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