Mobile opencast mining machine and method of extracting coal, ore, phosphate, bauxite, limestone, etc., by opencast mining

摘要

The invention relates to a mobile opencast mining machine for the continuous extracting of coal, ore, phosphate, bauxite, limestone, etc., as well as a method of extracting such raw materials which can preferably be carried out with such an opencast mining machine and is characterised in that the winning tool is mounted between two lateral travelling mechanisms or groups of travelling mechanisms which run on different horizontal planes of a bed to be worked in a terrace shape, the method according to the invention consisting in the fact that first of all the bed to be worked is undermined in the area of the bottom floor of the terrace and then the remaining projecting length of the bed to be worked is broken off in the vertical direction by a vibratory tool or the like.