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The regulation of mine ventilation by changing the operation of the main fan (HV) has both positive and negative aspects. One of the positive aspects is that this regulation can be made directly on the mine surface without lowering into the mine, namely by turning the fan blades from the minimum to maximum position. This regulation can be performed either from the control room or directly at the fan. The utilization of this control method in the mine ventilation (the reducing or increasing of the depression of main fans) brings with also certain disadvantages. By the overall regulation of the depression of main fans we influence the overall mine ventilation network. The HV regulation can without further interventions cause problems in other part of the mine. Therefore, to eliminate the negative effects we have to do partial steps in the regulation of ventilation in the ventilation network to achieve the desired effect in a specific part of the mining field and prevent the unwanted effect in other parts of the ventilation network. In this article we deal with the negative effects on a face worked under the main haulage level. Abstrakt Regulovat větrani dolu změnou provozu hlavniho ventilatoru (HV) ma jista pozitiva, i negativa. Jednim pozitivem je to, že lze tuto regulaci provest přimo na povrchu dolu bez nutnosti farani do dolu, a to natacenim lopatek ventilatoru z minimalni polohy do maximalni. Tuto regulaci můžeme provest buď z dispecinku, nebo přimo u ventilatoru. Použiti tohoto způsobu regulace při větrani dolu (snižovani, popř. zvysovani deprese hlavnich ventilatorů) s sebou ale přinasi i jista negativa. Celkovou regulaci deprese hlavnich ventilatorů ovlivňujeme celou větrni siť dolu. Regulaci HV může dojit k tomu, že bez dalsich zasahů nastanou problemy v jine casti dolu. V danem připadě pro eliminaci negativnich projevů musime udělat dilci kroky v regulaci větrani ve větrni siti tak, abychom dospěli k požadovanemu ucinku v konkretni casti důlniho pole a zamezili nežadoucimu dopadu v ostatnich castech větrni sitě. V tomto clanku se zabývame negativnimi ucinky na podpatrově dobývaný porub. |
