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Improving shield supports for mining thick steep seams

  • Strip and Underground Mining Operations
  • Published:
Journal of Mining Science Aims and scope

Conclusions

  1. 1.

    Inrushes and caving of the roof in the face region can be prevented by creating the conditions necessary for independent shifting of the ceiling of ShchRP-type supports under the influence of pressure of the caved rocks. Such conditions are created by freely joining the ceiling to the base and suitably choosing the parameters of the support.

  2. 2.

    Choosing efficient parameters for a self-advancing support and the stope makes it possible to keep the surface of the stope at an angle close to the angle of repose. If the ceiling and base are freely joined one to another, choosing such parameters allows the efficinet excavation of coal in the supercritical state.

  3. 3.

    For ShchRP supports which have a freely joined ceiling and base and are used to mine thick steep seams, “kick” movement of the support as a whole is preferable to separate movement of the ceiling and base, since separate movement may prove difficult under the given conditions.

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References

  1. A. A. Fedosov, V. T. Dzyubenko, I. A. Fainer, A. I. Vasilyev, and L. S. Senko, Shield Support Patent No. 612042.Byul. Izobr., No. 23 (1978).

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  5. A. A. Fedosov, I. A. Fainer, and A. I. Vasilyev, “Study of the motion of a MShch-type support during the room-and-pillar mining of thick steep beds along the dip,” in:Mining of Coal Seams in the Kuzbass [in Russian], IGD SO AN SSSR (Institute of Mining, Siberian Branch of the USSR Academy of Sciences), Novosibirsk (1981).

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Authors
  1. V. N. Kulakov
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Additional information

Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 6, pp. 74–84, November–December, 1998.

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Kulakov, V.N. Improving shield supports for mining thick steep seams. J Min Sci 34, 529–536 (1998). https://doi.org/10.1007/BF02562398

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  • DOI: https://doi.org/10.1007/BF02562398

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