Title:
METHOD AND APPARATUS FOR INTRODUCING OR SINKING CAVITIES IN ROCK
Document Type and Number:
WIPO Patent Application WO/2013/135391
Kind Code:
A3
Abstract:
The invention relates to a method for sinking or introducing cavities in rock, wherein the face of the cavity (2) is melted using electrical plasma generators. In order in such a method to produce an energy density at the face of the cavity (2), said energy density being sufficient to completely or partially evaporate the in-situ stone, the invention proposes arranging a heat shield (4) immediately over the face of the cavity (2), said heat shield (4) forming with the face of the cavity (2) a dynamic pressure space (7) in which a temperature of more than 2000°C is established at a pressure of more than 2 bar by heating with plasma generators (8). This supply of energy is sufficient to melt the stone in-situ at the face of the cavity (2), to completely or partially gasify it and to remove it from the cavity (2).
Inventors:
GROTENDORST JOSEF (DE)
Application Number:
PCT/EP2013/000800
Publication Date:
July 03, 2014
Filing Date:
March 15, 2013
Export Citation:
Assignee:
GROTENDORST JOSEF (DE)
International Classes:
E21B7/15
Foreign References:
| US3467206A | 1969-09-16 | |||
| US7784563B2 | 2010-08-31 | |||
| US20110120771A1 | 2011-05-26 |
Attorney, Agent or Firm:
BEHRENDT, Arne (Rechts- und PatentanwälteHuestrasse 23, Bochum, DE)
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