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我矿采用平峒溜井开拓。为解决各分枝溜井卸矿处的防尘问题,生产中使用了一种密闭式简易防尘门,如下图所示。 防尘门用废旧皮带卡在1.5英寸的 钢管(即转轴)上制成。托梁兼作格筛用。卸矿口用混凝土砌筑,为保安全,在浇灌时务必先在分枝溜井内适当位置架设好工作台。安装防尘门时,先将其从予留孔中下放,把转轴置于托梁一端的半元形支承坐上,使防尘门借助重力紧贴在混凝土砌筑的卸矿口外侧,而后再用木板把予留孔盖严。据估算,装设一处防尘门,约需旧钢材150公斤,水泥1吨,人工12个工班。
I mine using Pingtong slide to open up. In order to solve the dust problem of the branch chute mine unloading ore, a kind of sealed type simple dust-proof door is used in production, as shown in the following figure. The dust-proof door is made of waste belt with a 1.5-inch steel pipe (shaft). Joist also serve as grid screen. Unloading mouth with concrete masonry, in order to ensure safety, be sure to set up a good work table in the appropriate position in the branch chute when watering. Install the dust door, the first from the hole to be reserved to put the shaft placed at one end of the joist to sit on the half-shaped support, so that the dust door by gravity close to the outside of the concrete masonry unloading mouth, and then Re-use the wooden board to keep the hole tightly. It is estimated that the installation of a dust door, about the old steel 150 kg, 1 ton of cement, artificial 12 classes.