Through analyzing the problems existing in the belt conveyors in site, this paper puts forward a kind of trough with curved surface which behaves nicely in practice.
通过对现场使用的带式输送机给料槽存在的问题进行分析，设计出一种曲面给料槽。实践证明使用效果良好。
2
The negative pressure trough and deep trough high speed belt conveyor arranged in the left bank solved this problem.
通过在左岸布置负压溜槽和深槽式高速皮带联合运输系统，解决了这个问题。
3
Shasonggang Co(Cu, Ni) deposit occurs in Laoling Group, rich boron, carbon clay rock with siliceous rock formation, Paleoproterozoic rift trough folded belt, which is the domestic a new type deposit.