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Some geomechanical aspects of gas recovery from coal seams

  • Rock Mechanics
  • Published:
Journal of Mining Science Aims and scope

Abstract

The evolution of stress and pressure fields during gas recovery from coal seams is studied on the basis of a three-dimensional geomechanical model of coherent filtration. It is shown that one can change the stressed-strained state of rock mass and control purposefully the rate of process by creating an elliptical cavity in the vicinity of borehole face; the axes of this cavity are oriented with respect to the direction of principal horizontal stresses in the natural field. The tendency of developing disintegration zones that are within surrounding rocks during degassing of seams is investigated in relation to the lateral pressure coefficient.

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Authors
  1. L. A. Nazarov
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  2. L. A. Nazarova
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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. 2, pp. 35–44, March–April, 1999.

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Nazarov, L.A., Nazarova, L.A. Some geomechanical aspects of gas recovery from coal seams. J Min Sci 35, 135–145 (1999). https://doi.org/10.1007/BF02565367

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  • DOI: https://doi.org/10.1007/BF02565367

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