在毛主席革命路线指引下,在英明领袖华主席的领导下,我国的社会主义建设事业正在迅速发展,大批新的建设项目动工,地下作业日益增多,如矿坑、人防工事、水利隧道、下水道、挖井等等。在地下作业中,如不注意,有时可发生二氧化碳中毒。近年来,我们遇到了几起这类中毒事故,为了及时吸取教训,避免类似事故的再发生,下面就谈谈这一问题。二氧化碳的毒性二氧化碳是空气正常成份之一(含0.03～0.05％),也是人体生存不可缺少的气 Guided by Chairman Mao’s revolutionary line and under the wise leadership of Chairman Hua, the cause of socialist construction in our country is rapidly developing. A large number of new construction projects are under construction and more and more underground operations such as mines, civil air defense work, water conservancy tunnels, sewers, Dig well and so on. In underground operations, if not pay attention, sometimes carbon dioxide poisoning can occur. In recent years, we have encountered several such poisoning incidents. In order to learn lessons in time and avoid the recurrence of similar incidents, we will talk about this issue below. Carbon dioxide toxicity Carbon dioxide is one of the normal components of the air (0.03 ~ 0.05%), but also an indispensable gas for human survival