| 摘要 |
Mine corridors lining, composed of arches made of susceptible steel, characterised in that the structure comprises gradually increasing towards the connecting corridors main chamber (1) arches of excavation corridors openings (2) together with chamber's (1) diagonal arches (5) and bisector arches (6), at the same time the projection of the biggest arches of the corridors openings (4) on the main chamber base (1) constitutes an isosceles triangle or parallelogram and each diagonal arch (5) sits with its one end on the sole of contact spot of two arches of corridor openings (4), while the second end is fixed in the arch keystone (7), anchored in the ceiling (3) of the main chamber (1). Moreover, each bisector arch (6) is fixed by one end in the keystone (7) and the other end rests against the vertex of the biggest arch of the corridor opening (4) and is fixed...<IMAGE>
|
