How to improve the efficiency of the ventilation network of a coal mine during emergency situations?

When simulating an explosion of a methane-air mixture (firedamp), the excess pressure is calculated taking into account the gas content of rocks in terms of free combustible gases, the length of a blast cut, the size of the area of increased fracturing, and the lower explosive limit of methane. Based on the proposed principle of the parameterization of emergency models, as an example, a model of fire and explosion development in existing extended dead-end workings (more than 1000 m long) passing coaxially to each other at different heights was developed.

For more information, see the article:
📌 Perestoronin M.O., Parshakov O.S., Popov M.D. Parameterization of a ventilation network model for the analysis of mine working emergency ventilation modes. Mining Science and Technology (Russia). 2023;8(2):150–161. https://doi.org/10.17073/2500-0632-2022-10-13


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#inenglish #MST #mine #fire #explosion #emergency #simulation #AeroNetwork #parameterization #safety

We present the articles of the third issue of scientific journal "Mining Science and Technology” (Russia) for 2024:

The resulting model can be used for general analysis of operability and stability, as well as for verifying the correct selection of key elements in the design of sucker-rod pump unit systems with variable frequency drives.

For more information, see the article:

📌 Ershov M.S., Efimov E.S. Stability of a controlled sucker-rod pump unit drive under operating conditions and during voltage dips in the electrical network. Mining Science and Technology (Russia). 2024;9(3):292-303. https://doi.org/10.17073/2500-0632-2024-01-213

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#inenglish #MST #pump #drive #control #voltage #frequency #brake #mode #energy #network #generator #current #torque #power #speed #rectifier #inverter #battery #signal #model #Matlab #Simulink #algorithm #emergency #protection #recovery #compensation #load #fluctuations #stability