货场从车站牵出线引出,为合理利用地形,减少占地和土方,当货场标高较车站低时,宜将其联络线和咽喉面向货场拉成下坡(如图1);反之,宜拉成上坡(如图2)。对此可否采用大于2.5‰的坡度,在设计时有不同看法,有认为不应大于2.5‰,理由是超过2.5‰进行调车作业时,需要连结风管;有认为可以大于2.5‰,理由是咽喉和联络线上不摘车装卸,笔者对此分析 The freight yard leads from the station pull-out line. In order to make rational use of the terrain and reduce the occupation of land and earthworks, when the freight yard elevation is lower than that of the station, it is advisable to pull down the connecting line and the throat to the freight yard (as shown in Figure 1); on the contrary, Uphill (Figure 2). Whether this can adopt the gradient of more than 2.5 ‰, in the design have different views, that should not be greater than 2.5 ‰, the reason is more than 2.5 ‰ shunting operations, the need to connect the duct; there is that can be greater than 2.5 ‰, the reason is Throat and contact line loading and unloading car, I analyze this