Patent ID: 6561737
Filing Date: 2003-05-13
Classification: B28C

Abstract:
A device for post preparation of an injection compound which is useable for injection into for instance existing crack formations and cavities in rock arisen in connection with blasting away rock during for instance tunnel driving, the device being connected with a pump intended to pump an injection compound thereto, the device comprising:(a) an enclosure defining a space; and (b) a wire netting essentially covering a cross-section of the space, the wire netting divides the space into a first chamber and a second chamber, the pump is connected with the first chamber via a first conduit and a first connection, the second chamber is divided into an upper part and a lower part, the upper part is provided with a second connection, and the lower part is provided with a third connection, the wire netting having mesh size and wire dimension determined from: the size of the cracks and the cavities in the rock; the tendency of the injection compound to build up filter cakes; and desired rheological qualities of the injection compound.