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.

Keywords: coal mass, susceptibility, management actions, methane recovery, fracturing, vibration action, technology, microcracks, permeability, frequency.
For citation:

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.

Acknowledgements:
Issue number: 2
Year: 2021
Page number: 174-183
ISBN: 0236-1493
UDK: 622.831.325.3(043.3)
DOI: 10.25018/0236-1493-2021-21-0-174-183
Article receipt date: 14.01.2021
Date of review receipt: 28.01.2021
Date of the editorial board′s decision on the article′s publishing: 01.02.2021
About authors:

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;

 

For contacts:

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

Bibliography:

1. Dawe R.A., Mahers E.G. and Williams J.K. Pore scale physical modeling of transport phenomena in porous media in “Advances in transport phenomena in porous media” Bear J. and Corapcioglu M.Y. eds. Martinus Nijhoff Publ. 1987, pp. 48—76.

2. Lebedev V.S., Skopintseva O.V. Residual coalbed gas components: Composition, content, hazard. Gornyi Zhurnal. 2017, no. 4, pp. 84—86. [In Russ]. DOI: 10. 17580/ gzh.2017.04.17.

3. Pavlenko M.V. The Formation of zones of the coal fray volumetric impregnation as a result of the vibration impact. 23th International Gonference Enginiring Mechanics. Svratka. Czech Republik. 2017, pp. 758—761.

4. Nikolaevsky V.N. Mekhanizm vozdeystviya vibroseysa na nefteotdachu mestorozhdeniy i dominiruyushchuyu chastotu. Tr. AN SSSR [Mechanism of Vibroseis Impact on Oil Recovery and Dominant Frequency, Tr. Academy of Sciences of the USSR]. 1989, t. 307, no. 3, pp. 570—575. [In Russ].

5. Pavlenko M.V., Barnov N.G., Kuziev D.A., Kenzhabaev K.N., Monzoev M.V. Vibration impact through wells and the technology of degassing of the preparation of low-permeability coal seam. Ugol’ — Russian Coal Journal. 2020, no. 1, pp. 36—40. DOI: http://dx.doi. org/10.18796/0041—5790—2020—1-36—40. [In Russ].

6. Pavlenko M.V. Operational control of efficient and effective treatment of coal bed using complex action taking into account resonant natural frequencies of the block. 24rd International Conference Engineering Mechanics 2018. Svratka, Czech Republic, 2018, pp. 645—648. Doi: 10.21495/91-8-645.

7. Wei J.P., Wang H.L., Wang D.K., Yao B.H. An improved model of gas flow in coal based on the effect of penetration and diffusion. Journal of China University of Mining & Technology. 2016, vol. 45, no. 5, pp. 873–878.

8. Michael J. Landry. The coset construction for non-equilibrium systems. High Energy Phisics — Theory. Submitted on 27 Dec 2019, p. 35. https://arxiv.org/abs/1912.12301.

9. M. Baggioli and M.J. Landry. Effective field theory for quasicrystals and phason dynamics [arXiv:2008.05339 [hep-th]].

10. Yao B., Ma Q., Wei J., Ma J., and Cai D. Effect of protective coal seam mining and gas extraction on gas transport in a coal seam. International Journal of Mining Science and Technology. 2016, vol. 26, no. 4, pp. 637–643.

11. Li X.L., Wang E.Y., Li Z.H., Liu Z.T., Song D.Z., Qiu L.M. Rock burst monitoring by integrated microseismic and electromagnetic radiation methods. Rock Mechanics & Rock Engineering. 2016, vol. 49, no. 11, pp. 4393–4406.

12. Omid Dorostkar, Robert A. Guyer, Paul A. Johnson, Chris Marone, Jan Carmeliet. On the role of fluids in stick-slip dynamics of saturated granular fault gouge using a coupled computational fluid dynamics-discrete element. approach. Journal of Geophysical Research Solid Earth. 2017. DOI:10.1002/2017jb014099.

13. Skopintseva O.V., Balovtsev S.V. Air quality control in coal mines based on gas monitoring statistics. MIAB. Mining Inf. Anal. Bull. 2021;(1):78—89. [In Russ]. DOI: 10.25018/0236-1493-2021-1-0-78-89.

14. Balovtsev S.V. Aerological risk assessment in working areas of gas and dust explosion-hazardous coal mines. Gornyi Zhurnal. 2015, no. 5, pp. 91—93. DOI: 10.17580/ gzh.2015.05.19. [In Russ].

15. Ganova S.D., Skopintseva O.V., Isaev O.N. On the issue of studying the composition of hydrocarbon gases of coals and dust to predict their potential hazard. Bulletin of the Tomsk Polytechnic University, Geo Assets Engineering. 2019, t. 330, no. 6, pp. 109—115. [In Russ].

16. Nyoni W., Pillay M., Rubin M., Nyoni W., Nyoni W., Ma J., Dai H. A methodology to construct warning index system for coal mine safety based on collaborative management. Safety Science, 93, 2017, pp. 86—95.

17. Zhang L., Zhang H., Guo H. A case study of gas drainage to low permeability coal seam. International Journal of Mining Science and Technology. 2017, no. 27(4), pp. 687— 692.

18. Balovtsev S.V. Explosion safety procedure for working areas in coal mines. MIAB. Mining Inf. Anal. Bull. 2018, no. 11, pp. 218—226. DOI: 10.25018/0236-1493-2018-11-0218-226. [In Russ].

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