| 摘要 |
<p>In the material to be splitted, respectively crushed, a hole is drilled wherein the pressure required for the splitting, respectively the crushing is obtained for example by explosion, an expansion crushing probe or explosive energy transfer to a liquid load. The present invention is characterized in that the hole, diverging from the circular shape, is so configured that, seen from the longitudinal axis, its side surfaces intersect at least in one longitudinally directed ridge. The angle bisector line of the lateral surfaces determining the ridge is orientated in the direction of the projected structure (Fig. 1b). According to the present invention, it is also possible to insert into the circular cross-section hole a tubular insertion element (7) longitudinally provided with at least one slot (8), said slot (8) being then orientated in the direction of the planned fracture (5).</p> |
