Extraction system for underground winning operations in inclined stratification

摘要

The invention relates to an extraction system for use in winning operations in inclined (steep or semi-steep) stratification, in particular winning on the tilted working face and drop-stowing. The extraction system consists of a lightweight structure in the form of extraction frames (100) which have on the stowage side obliquely positioned wall elements (15) which engage over one another approximately in the manner of roof shingles. Between the normal extraction frames (100), special extraction frames (1) are connected in at intervals and have, in addition to the wall element (15), a shielding wall (25) which is aligned and can be pushed forward in the walking direction. As a result, it is possible to move the extraction system forward in groups without the stowage material flowing into the working room. <IMAGE>