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大型土方平基作业是建筑施工工艺中首要环节。其工艺流程是:钻孔→爆破挖土→装载→运输→卸土平整。为了解大型土方平基的职业危害,我们对某公司进行了调查。由于施工任务不平衡而粉尘浓度不同,施工低潮时的平均粉尘浓度为4.1毫克/立方米(0.8—60毫克/立方米),平均超标二倍。施工高潮时的平均
Large earthwork flat basement is the construction of the first link in the process. The process is: drilling → blasting excavation → loading → transportation → unloading leveling. In order to understand the occupational hazards of a large earthwork flat, we conducted a survey of a company. Due to the unbalanced construction tasks and the different dust concentrations, the average dust concentration at the construction low tide was 4.1 mg / m3 (0.8-60 mg / m3), with an average exceeding the standard twice. Average during construction climax