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通过对新研制的小型双级复合式氡子体净化装置的工业性试验，探讨了独头巷道作业面以净化装置为界面的第一净化区、第二净化区的氡子体浓度的变化规律，试验结果表明，在作业区域内，依据所需风量，安设相应的净化装置，利用循环风流对空气进行净化，可使氡子体与粉尘的净化效率分别达９５％和９９％以上，它既能满足辐射防护的卫生要求，又能节省能耗。
Through the industrial test of the newly developed small double-stage composite radon progeny purification device, the variation of the concentration of radon progeny in the first purifying zone and the second purifying zone of the working face of the single-headed tunnel with the purifying device as the interface is discussed The results show that in the work area, according to the required air volume, the installation of appropriate purification devices, the use of circulating air flow to purify the air, radon progeny and dust purification efficiency of 95% and 99% respectively, it Not only meet the health requirements of radiation protection, but also save energy.