Aerological risk management in designing, operation, closure and temporary shutdown of coal mines

Abstract

The currentness of the development of a scientifically founded calculation and methodological framework for the assessment and management of aerological risks is governed by the required enhancement of high-intensity coal production, distortion of project design in the course of mining, low efficiency and unsafety of mine ventilation schemes and inefficient gas emission control. The information and analysis data support developed by this article authors enables decision-making on aerological risk management based on the air-and-gas control statistics on frequency and intensity of failures in determination of mine air parameters, mine air dust content, dust deposition in mine airways and predictive assessment of gas emission risk in development headings and stopes. The article presents the results of the aerological risk assessment by dust and gas criteria for different ventilation schemes. The results reveal unsafe ventilation schemes which can lead to accidents in extraction panels in specific geological conditions. In case of using unsafe ventilation schemes, it is required to introduce limitation in coal production output and to initiate gas emission control. The authors also describe the results on the aerological risk assessment in mining rockburst-hazardous and ignitable coal beds, as well as on the effect exerted by gas emission control on the predicted value of aerological risk. The research findings allow the aerological risk prediction in designing, operation, closure and temporary shutdown of coal mines, as well as in justification of aerological safety.

Fundamentals of forecasting explosive gas accumulation formation in working areas of coal mines

“…However, despite the fact that the use of these methods of normalisation of mine workings atmosphere makes a significant contribution to mine safety, we believe that they are insufficient to achieve due to the possibility of formation of local accumulations of methane and the lack of tools for its early detection. This, in turn, in case of violation of requirements to the conduct of technological and production process, lack of informing the mine personnel about the rules of behaviour when being near or in the FD, as well as other factors can lead to emergencies of varying severity and consequences [2,3,19].…”

An integrated approach to safety in the design and operation of open-pit mining facilities

“…Application software systems specialized in the field of mining operations are analyzed in detail. Moreover, some of them are used both at the stage of quarry design and during various types of monitoring, primarily monitoring the state of industrial safety during quarry operation (Table 1) [1,12,15].…”

Increasing Operational Efficiency Mining Machines in Coal Mines

“…Это обуслов лено рядом технологических факторов добычи угля под земным способом, а также особенностями построения си стем электроснабжения. К технологическим факторам сле дует отнести особенности аэрогазовой обстановки в под земных горных выработках, особенно для угольных шахт, опасных по внезапным выбросам газа и пыли, а также от сутствие возможности использования общепринятых ме тодик и общепромышленного оборудования [18,19]. Осо бенности построения систем электроснабжения угольных шахт заключаются в различных режимах нейтрали, кото рые используются одновременно.…”