Authors: A.V. Novik, B.L. Gerike, Yu.M. Lekontsev

Title of the article: Evaluating the volum of induced air in arterial and utility pipe-lines while capturing methane

Year: 2024, Issue: 4, Pages: 109-116

Branch of knowledge: 2.8.8 Geotechnology, mining machines

Index UDK: 622.817.47

DOI: 10.26730/1999-4125-2024-4-109-116

Abstract: In the mines of Kuzbass, underground technologies for degassing coal seams are mainly used, including various schemes for drilling a grid of degassing wells. With an increase in the depth of mining of coal seams, not only their methane content increases, but also a decrease in the efficiency of gas removal from degassing wells due to a drop in vacuum in the pipeline transporting the methane-air mixture, which requires the creation of small-scale mechanization means to solve this problem. To do this, first of all, it is necessary to analyze the level of vacuum losses in the auxiliary and main pipelines. As a result of analytical calculations of the vacuum system operation by three main indicators: pressure, volume of captured gas and its temperature, it was established that the greatest vacuum losses occur at the junctions of pipelines with degassing wells. This was confirmed by the results of monitoring the operation of the captured methane gas exhaust pipeline on the S.D. Tikhov Highway of SUEK-Kuzbass JSC, which showed that the amount of air intake exceeds the permissible value by 2.5-3 times. The analysis of the results of the studies made it possible to identify the most bottlenecks in the methane accumulation system and to develop proposals for improving the system of pipeline transportation of the gas-air mixture by embedding additional devices for autonomous compensation of vacuum losses into the system

Key words: coal seam methane methane-air mixture underground degassing pipe-line vacuum losses pressure consumption

Receiving date: 28.02.2024

Approval date: 25.07.2024

Publication date: 26.09.2024

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