我们对青海省州县煤矿进行了劳动卫生和尘肺患病情况调查,现报告如下: 一、一般情况 本次调查了我省州县煤矿13个,多数从1958年开采,1983年底职工总数为2405人,其中接尘工人为1512人。这些矿大多位于海拔3000m以上的海西、海北高原地区,低氧、低气压、干燥多风是气候的主要特点。 二、劳动现场调查 调查矿的开采方式为井内和露天二种,以井内开采为主,采煤方法均为炮采。井下岩石以页岩、沙质岩和泥岩为主,煤质分为硬煤和软煤。各矿井下生产设备简陋,机械化程度低,大多为手工操作,掘进和采煤均为电钻干 We conducted a survey on labor hygiene and pneumoconiosis among state-owned coal mines in Qinghai Province. The current report is as follows: I. General Situation The survey investigated 13 coal mines in Zhou County, the majority of which were mined in 1958 and the total number of workers at the end of 1983 was 2405 Among them, 1512 were workers who took the dust. Most of these mines are located in the Hercynian and Haibei Plateau at an altitude of 3000m above sea level. The main features of the climate are low oxygen, low pressure and dry windy weather. Second, the labor site investigation Survey mining methods for the well and the open two, mainly to the exploitation of wells, mining methods are artillery mining. Downhole rocks to shale, sandy rock and mudstone-based, divided into hard coal and soft coal. The production facilities in each mine are primitive and have a low level of mechanization. Most of them are hand-operated, and the tunneling and coal mining are all electric drills