ple structure,low price,low energy consumption,easy reparation,less coal dust,high coal—block rate,high production and good economic profit.Furthermore.their electric motors must not be located in working faces,and miners must not work in working faces.For a thin coal seam with the suitable conditions, we should give the priority to ploughs.In fact.a lot of coal seams in China are suitable for ploughs.At present,few ploughs are used in China just because we are not familiar with them.As long as we take a good attitude to ploughs and try to know them perfectly,better technical and economic profits can be obtained .Hanqiao Coal Mine,Xuzhou Mining Group, is a good example in the use of ploughs.W e are confident that it is bound for coalmining with ploughs to have a bright prosperity in China.
全文预览
