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1. 发明公开

EP0433253A1 Method for excavating rock cavities 失效
标题翻译：维他命。
公开(公告)号：EP0433253A1
公开(公告)日：1991-06-19
申请号：EP90850380.8
申请日：1990-11-21
申请人： KURT SVENSSON GRÄVMASKINER AKTIEBOLAG
发明人： Svensson, Kurt
IPC分类号： E21D13/02
CPC分类号： E21D13/00
摘要： The present invention relates to a method for excavating and preparation of rock cavities and then substantially spherical rock cavities or rock cavities having spherically shaped parts, such as dome-shaped ceilings, which rock cavities are intended as shelter, for the storage of solid or liquid products or for production plants in rock, whereby one drills a first series of radially outwardly extending holes (6) from a first distance (4) from one or more shafts/tunnels (3, 13, 14, 15, 16), preferably radially arranged from the centre of a sphere projected; that one drills a second series of radially outwardly extending holes (8) from a second, far more out arranged distance (7) from the centre, which holes (8) extend outside the holes of the first series; that one drills a third series of radially outwardly extending holes (10) from a third, further far more out arranged distance (9) from the centre, which holes (10) extend outside the holes (8) of the second series; that optionally further series of holes (12) are drilled from further far out situated distances (11) extending radially outwardly up to the boundaries of the cavity (1); that the first series of holes (6) are charged in their whole lengths; that each further series of holes (8, 10, 12) are charged in that part which lies outside a charging area of a previous series of holes (6, 8, 10) up to the touching point of a next series of holes (10, 12), whereby the charges will take consecutive annular charging areas, which cover the shape of the spherical cavity projected, and that blasting takes place of each annular area per se starting from outside in, or vice verse.
摘要翻译：本发明涉及一种用于挖掘和准备岩石腔，然后是基本上为球形的岩石腔或具有球形形状的部分的岩石腔，例如圆顶形天花板，岩石空腔旨在作为遮蔽物，用于储存固体或液体产品或岩石中的生产设备，其中一个第一系列径向向外延伸的孔（6）从一个或多个轴/隧道（3,13,14,15,16）的第一距离（4）钻出，优选地径向从投影的球体的中心排列; 该第二系列的径向向外延伸的孔（8）从中心从第二远远延伸的距离（7）钻出，该孔（8）延伸到第一系列的孔之外; 从第三系列的径向向外延伸的孔（10）从第三系列径向向外延伸的距离（9）从中心钻出，该孔（10）延伸到第二系列的孔（8）外面; 可选地，另外一系列的孔（12）从径向向外延伸到空腔（1）的边界的更远的位于距离的距离（11）钻出; 第一系列孔（6）以其整个长度充电; 在另一系列的孔（8,10,12）中装入位于先前一系列孔（6,8,10）的充电区域之外的部分，直到下一系列孔（10）的接触点，12），由此电荷将采取连续的环形充电区域，其覆盖凸出的球形空腔的形状，并且每个环形区域本身从外部开始或相反地发生爆破。

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