一、前言 用喷射混凝土作为隧道永久性衬砌,具有省料、省工、速度快、造价低的优点。但是在喷射混凝土时,产生大量粉尘,直接危害工人健康,影响了此项技术的推广应用。 为摸清粉尘产生情况,以便采取有效的防尘措施,曾在有关单位配合下,在皇后岭隧道施工中,对喷射混凝土作业的防尘措施进行了 First, the preface With the injection of concrete as a permanent tunnel lining, with the material, labor, speed, low cost advantages. However, when spraying concrete, a large amount of dust is produced, which directly endangers the health of workers and affects the popularization and application of this technology. In order to find out the situation of dust generation in order to take effective dust control measures, dust prevention measures for sprayed concrete operations were carried out in the construction of the tunnel in Queens Ridge with the cooperation of the relevant units.