大型的粮库和粮食加工厂厂区内大多设有铁道专用线来完成粮食的接收和发运工作,尤其在缺乏水路运输的北方地区更是如此。而对火车散装粮食的接收通常是通过火车卸粮坑这一专用设施来进行的。火车卸粮坑的形式各异,归纳起来大体有两种,一种是桥式卸粮坑,它是将铁路专用线中的一段(长度视接收能力大小而定,一般 Most of the large grain storage and food processing plants have specialized railway lines to receive and dispatch food, especially in the northern part of the country, where there is a lack of waterway transportation. The reception of bulk grain in the trains is usually carried out by the special facility of the train unloading grain pit. Trains unloading grain pit in different forms, summed up in general there are two, one is the bridge unloading grain pit, which is a special railway line (length depending on the size of the receiving capacity, the general