Determine the product after safe ventilation column explodes in the explosion in mine

摘要

Toxic gas CO and NOx oil spout based on acceptable concentration illustrates to be indicated by safety or sanitary regulations and above-mentioned technical parameter blasting agent bursting work for by the producer, saturation coefficient down-sampler to calculate according to the following formula:IMAGEwhere with compressed air: in the post-job product of mine blasting of safety-coefficient ventilating gas explosion of down-sampler; It is pointed out after VCO-specific volume CO gas explosion product explosions, in the technical parameter burster (m3kg-1) by the producer; It is pointed out after vnox-specific volume NOx gas explosion product explosions, in the technical parameter burster (m3kg-1) by the producer; Air in the supreme acceptable concentration CO mines of NPKco-passes through the safety or sanitary regulations (%, million/); Air in the supreme acceptable concentration Knox mines of NPKnox-passes through the safety or sanitary regulations (%, million/); As a result the value of saturation coefficient down-sampler is greater than 1, only after CO concentration,Measure grit blasting operation. If the value of down-sampler is lower than 1, only the concentration of Knox is measured. If the concentration of the CO measured, which has been ventilation and can enter workspace by the safety and health rules and regulations, two kinds of toxic gas CO and Knox in the latter case, lower than the control air of acceptable concentration.