Justification of technologies parameters for intensive mining of prone to spontaneous combustion thick coal seams

The purpose of the researches were adjustments of technological schemes of preparation and intensive mining of longwall panels for an increase in efficiency and safety of mining of coal seams, thick gas-bearing prone to spontaneous combustion. The low performance of use of the modern powerful longwall equipment in coal mines is explained by the long unplanned outages caused by untimely preparation of new longwall panels and considerable duration of moving of longwall equipment. Efficiency analysis of move works in mines of JSC SUEK Kuzbass showed unsatisfactory efficiency when mining thick seams where an excess of planned dates by 1.7—2 times is observed. The high duration of move works is connected with an unsatisfactory operational state of recovery rooms, the low handling capacity of the used suspended monorail roads and also an increase in weight of longwall equipment in connection with the increase of longwall panel width in underground coal mines. The analysis of the Russian and foreign experience of application of longwalls with the increased length (400 m and more) allowed to draw a conclusion on inexpediency of increase in lengths of longwalls when mining thick coal seams and especially in the conditions of endogenous fire danger. The main directions of reduction of terms of longwall move works are considered and the need for justification of their scope is shown. The need of taking note of high rock pressure zones when choosing the place of forming of the recovery room by longwall is shown. As the main direction of improvement of technological schemes of longwall mining of coal seams specified application of technological schemes of multiple entries of longwall panels.

Keywords: underground mining, coal seams, longwall, longwall equipment move works, productivity, downtimes, technical-and-economic indices, longwall equipment, endogenous fires recovery room.
For citation:

Sidorenko A. A., Meshkov S. A. Justification of technologies parameters for intensive mining of prone to spontaneous combustion thick coal seams. MIAB. Mining Inf. Anal. Bull. 2022;(6—1):83—99. [In Russ]. DOI: 10.25018/0236_1493_2022_61_0_83.

Issue number: 6
Year: 2022
Page number: 83-99
ISBN: 0236-1493
UDK: 622.272
DOI: 10.25018/0236_1493_2022_61_0_83
Article receipt date: 14.01.2022
Date of review receipt: 30.05.2022
Date of the editorial board′s decision on the article′s publishing: 10.05.2022
About authors:

Sidorenko A. A., Cand. Sci. (Eng.), Associate Professor of the Department of Development of Mineral Deposits, e-mail: Sidorenko_AA@pers.spmi.ru, ORCID ID: 0000-0003-4224-193X, Saint Petersburg Mining University, 199106, St. Petersburg, Vasilievsky Island, 21 line 2, Russia;
Meshkov S. A., Manager of mining operations, e-mail: Meshkov_SA@suek.ru, JCS SUEKKuzbass, 652507, Kemerovo region, Leninsk-Kuznetsky, Vasilyeva St. 1, Russia.

For contacts:

Sidorenko А. А., e-mail: Sidorenko_AA@ pers.spmi.ru.


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