Factors defining value and direction of thermal pressure between the mine shafts and impact of the general mine natural draught on ventilation process of underground mining companies

Innovations and Prospects of Development of Mining Machinery and Electrical Engineering

矿业工程;电工学

Nikolaev, A.V.^2 ; Alymenko, N.I.^1 ; Kamenskikh, A.A.^1 ; Alymenko, D.N.^3 ; Nikolaev, V.A.^2 ; Petrov, A.I.^1

Mining Institute of the Ural Branch, Russian Academy of Sciences (MI UB RAS), 78-A, Sibirskaya St., Perm

614007, Russia^1

Perm National Research Polytechnic University (PNRPU), Komsomol'skiy Ave. 29, Perm

614990, Russia^2

Joint Stock Company VNII Galurgii (VNII Galurgii JSC), Russia^3

关键词: Air handling systems;    Main mine fans;    Measuring data;    Normal operations;    Operation mode;    Temperature and pressures;    Thermal pressure;    Underground mining;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/87/5/052020/pdf
DOI  :  10.1088/1755-1315/87/5/052020

来源: IOP

【 摘 要 】

The article specifies measuring data of air parameters and its volume flow in the shafts and on the surface, collected in BKPRU-2 (Berezniki potash plant and mine 2) (Uralkali PJSC) in normal operation mode, after shutdown of the main mine fan (GVU) and within several hours. As a result of the test it has been established that thermal pressure between the mine shafts is active continuously regardless of the GVU operation mode or other draught sources. Also it has been discovered that depth of the mine shafts has no impact on thermal pressure value. By the same difference of shaft elevation marks and parameters of outer air between the shafts, by their different depth, thermal pressure of the same value will be active. Value of the general mine natural draught defined as an algebraic sum of thermal pressure values between the shafts depends only on the difference of temperature and pressure of outer air and air in the shaft bottoms on condition of shutdown of the air handling system (unit-heaters, air conditioning systems).