OBJECTIVE To improve the quality of dustalleviation work, cut off transmission routes, and prevent nosocomial infection effectively.
目的提高保洁工作质量，切断传播途径，有效地预防医院感染。
2
The design &- calculation of ventilation, dust - alleviation technology &- measures and the achievements during construction of tunnel are recommended in this paper.
本文主要介绍洞内施工通风的设计与计算、降尘技术与措施以及所取得的效果。
3
Comprehensive treatment technology of ventilation, dust -alleviation and purification was successfully applied in the mechanized construction of Lei Gongshan tunnel on Beijing-Jiulong Railway Line.