Degree of sensitivity of the coal mass to changes during vibration and technical solutions to increase methane reference from the formation

The article is devoted to the problem of organizing management measures to increase methane recovery during the formation of cracks in a low-permeability gas-saturated coal mass using vibration exposure. To increase gas recovery from the coal seam, the task is to make managerial decisions with the known parameters of the coal mass and the parameters of vibration impact. As a research task, the authors made an attempt to assess the degree of susceptibility of changes in the coal seam from external influencing factors, such as vibration, to destabilize the coal array. The change in fracturing in the coal mass, as a result of the effect of deformations and displacements of a moving object in the coal seam, can be considered as one of the most difficult tasks. Thanks to the organization of management decisions, it is possible to change such parameters as frequency, exposure time, vibration amplitude and control the degree of methane recovery from a low-permeability coal seam. When using an integrated method of transformations in a gas-bearing coal massif to solve the problem of effective preparation of a coal seam, a method of complex impact on the massif is proposed. Two possible approaches to the transformation of the rock mass are considered: based on the use of hydraulic action and subsequent vibration action. The advantages of the proposed approaches are discussed and demonstrated, mainly with the use of vibration exposure at the final stage.

Pavlenko M.V., Ivanov P.D. Degree of sensitivity of the coal mass to changes during vibration and technical solutions to increase methane reference from the formation. MIAB. Mining Inf. Anal. Bull. 2021;(2—1):174-183. [In Russ]. DOI: 10.25018/0236-1493-2021-21-0-174-183.

Pavlenko M.V., Cand. Sci. (Eng.), Assoc. Prof, e-mail: mihail_mggy@mail.ru;
Ivanov P.D., Senior Lecturer, Bauman Moscow State Technical University, Moscow, Russia, e-mail: ivanovpd@yandex.ru;

Pavlenko M.V., e-mail: mihail_mggy@mail.ru.

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