正压呼吸器防尘系统在岩巷综掘工作面的应用

摘要

There exists some problems in the fully mechanized excavation face of rock roadway such as large amount of dust is produced, conventional dust reduction measures are not satisfactory , and general breathing masks can ’t effectively reduce operator’s absorption of dust et al .A positive pressure respirators system for dust prevention was developed, and on-site experiment in bottom drainage roadway was conducted .The results showed that,after using the positive pressure respirator system, the dust collection efficiency reaches 70.82%, while the dust removal effi-ciency is only 42.01%.It can not only effectively reduce the concentration of dust and improve the operating envi -ronment, but also can ensure the workers demand for fresh air and reduce the hazard of dust on human health .%针对矿井岩巷综掘工作面产尘量大，常规降尘措施不理想，一般呼吸面罩无法有效降低工作面作业人员对粉尘吸收的问题，研制了正压呼吸器防尘系统，并在岩巷综掘工作面底抽巷进行了现场试验。试验结果表明：使用正压呼吸器防尘系统除尘效率达到了70．82％，不使用时除尘效率仅为42．01％，不仅有效降低了工作面的粉尘浓度，改善职工作业环境，而且保证了工作面作业人员对新鲜空气的需求，减少了粉尘对职工身体的危害。