论文部分内容阅读
露天矿炮孔钻机是可吸入人体的石英粉尘的罪恶之源。根据美国矿山安全和健康管理局(MSHA)的资料,钻探工及其助手吸入石英粉尘量最大,在剥离打钻时更是如此。因此,许多露天钻进作业都有严格的粉尘控制标准,即0.1～0.5mg/m~3。露天矿钻机的粉尘控制有干式旋流集尘器(过滤式集尘器),和湿式除尘设备(将小量的水喷入环形风流中)。这两种方法的粉尘控制率都达95％以上。但是,两者都存在要么粉尘控制率降低,要么凿岩效率下降这一问题。为了解决这些问题,矿业局不仅研究出一
Open-pit blasthole drills are the source of sin that can inhale quartz dust from the body. According to the Mine Safety and Health Administration of the United States (MSHA), drillers and their helpers inhaled the largest amount of quartz dust, especially when stripping and drilling. Therefore, many open-air drilling operations have strict dust control standards, that is, 0.1 ~ 0.5mg / m3. Opencast mine rig dust control dry swirling dust collector (filter dust collector), and wet dust removal equipment (a small amount of water into the annular flow). The dust control rates for both methods are above 95%. However, both have the problem of either reduced dust control or reduced drilling efficiency. In order to solve these problems, the mining bureau not only developed a