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屯秋铁矿于1981年试生产,连续生产以来,溜井结拱堵塞三次,前两次堵塞发生在井底板式给矿机上部10米处,第三次发生在溜井顶部,具体情况列于附表。一、结拱堵塞原因及其分析造成溜井结拱堵塞的原因很多,一般与溜井通过系数、矿石块度、矿石粘性、含水率和矿石堆放时间等有关。从附表及图1中看出,屯秋铁矿溜井通过系数是符合一般设计要求的。
Tuen autumn iron ore pilot production in 1981, since the continuous production, the chute blocked arch three times, the first two blocks occurred in the bottom plate to the top of the mine machine 10 meters, the third occurred in the top of the slip well, as shown in the attached table. First, the cause of the arch jam and the analysis caused a lot of blockage of the slip-line knot arch, and the general pass coefficient with the slide, ore block, ore viscosity, moisture content and ore stacking time and so on. From the attached table and Figure 1, it can be seen that the passing coefficient of Tuen-Chiu Iron Mine is in line with the general design requirements.