用大量崩落法开采矿床时,放矿和装矿是繁重劳动的工艺过程之一,占采矿法总劳动消耗量的30％。在这种情况下用人工或爆破法处理放矿溜井堵塞的费用占有很大比例。放出1000t矿石的堵塞次数达9～12次,而处理这种堵塞要占工班时间的27％～30％。除了因出矿和电机车运输设备停工而损失时间和降低劳动生产率外,由于作 With a large number of caving mining ore deposits, ore handling and loading is one of the heavy labor processes, accounting for 30% of the total labor consumption of mining law. In this case, artificial or blasting method to deal with the cost of blockage of the runway accounts for a large proportion. Release 1000t ore blockage up to 9 to 12 times, while dealing with this blockage to account for 27% to 30% of class time. In addition to the loss of time and the reduction of labor productivity caused by the suspension of transport facilities for mining and electric vehicles,