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在露天矿采用与电铲配套的自行式破碎设备作业时会产生大量的粉尘排放。全苏矿业劳动安全科学研究所的专家们在中部采选公司露天矿对2000型破碎-转运机组与8型电铲配套作业时的粉尘排放进行了研究。现已确认,主要尘源是电铲工作面、受矿槽、破碎机、给矿机和矿岩转运站。特点是这些作业点产生的部分粉尘会落到装矿-破碎设备的各个平台上以及该设备所在的台阶底板上。破碎-转运机组和电铲在产尘点作业时引起的振动,加上风的动压作用,便形成二次扬尘。为了对此种现象进行定量评定,必须研究风加上振动对扬尘过程的影响。换句话说,应计算临界风速值并考虑所有的(振动加速度、
In the open-pit mine and shovel supporting the self-propelled crushing equipment operation will produce a lot of dust emissions. The experts from the Institute of Labor Safety and Safety at Quanzhou Institute of Mining and Metallurgy conducted a study on the dust emissions from the operation of the Type 2000 Crusher-Transfer Unit and Type-8 Shovel in the open pit mining company in Central China. It has been confirmed that the main dust source is shovel face, by ore trough, crusher, to the mine and ore transfer station. The characteristic is that some of the dust generated at these work points falls on the various platforms of the ore-crushing plant and on the step floor where the equipment is located. Broken - transfer units and shovels in the dust production point of operation caused by vibration, coupled with the dynamic pressure of the wind, they formed the second dust. In order to quantitatively appraise this kind of phenomenon, it is necessary to study the influence of wind plus vibration on the dust-raising process. In other words, the critical wind speed value should be calculated and all (vibration acceleration,