Safe and high-rate mining of gas-bearing coal with integrated preparative degassing

The article justifies basic ways of improving the in-seam gas drainage technology to ensure efficient underground coal mining. The approaches to the selection and contents of the integrated in-seam preparatory degassing technology and the mechanism of preliminary in-seam gas drainage using hydraulic fracturing and hydraulic splitting techniques to prepare coal seams for safe and high-rate mining are described. Hydraulic splitting of coal via surfacedrilled boreholes to ensure methane-related safety of underground coal mining was carried out for the first time in the coal mining practice in Kuzbass in 2019 in Kirov Mine of SUEKKuzbass. The article also reports the testing data of new integrated in-seam degassing technologies. The rational parameters, application range and the achieved efficiency of engineering solutions developed in the sphere of preliminary and anticipatory gas drainage are determined. The scientific prospects connected with the development and introduction of the degassing technologies to prepare coal seams unloaded from rock pressure for the safe and high-rate mining are shown.

Keywords: integrated preparatory degassing, coal seams, basic degassing facilities, preliminary in-seam gas drainage, hydraulic fracturing, hydraulic splitting, parameters, effect realization mechanism, efficiency evaluation, improvement trends, technology development prospects.

For citation:

Slastunov S. V., Kolikov K. S., Sadov A. P., Khautiev A. M.-B., Komissarov I. A. Safe and high-rate mining of gas-bearing coal with integrated preparative degassing. MIAB. Mining Inf. Anal. Bull. 2023;(2):152-166. [In Russ]. DOI: 10.25018/0236_1493_2023_2_0_152.

Acknowledgements:

About authors:

S.V. Slastunov¹, Dr. Sci. (Eng.), Professor, e-mail: slastunovsv@mail.ru,
K.S. Kolikov¹, Dr. Sci. (Eng.), Head of Chair, e-mail: kolikovks@mail.ru,
A.P. Sadov², Cand. Sci. (Eng.), Director, e-mail: sadovap@suek.ru,
A.M.-B. Khautiev², Cand. Sci. (Eng.), Engineer-Technologist, e-mail: khautievam@suek.ru,
I.A. Komissarov², Deputy Chief Engineer, e-mail: komissarovia@suek.ru,
¹ Mining Institute, National University of Science and Technology «MISiS», 119049, Moscow, Russia,
² Methane degassing and Utilization Department, JSC SUEK-Kuzbass, 652500, Leninsk-Kuznetsky, Russia.

 

For contacts:

S.V. Slastunov, e-mail: slastunovsv@mail.ru.

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