Method and device for removal of destroyed rock from the tunnel shield

 

(57) Abstract:

The method and apparatus relate to the field of mining and are designed for removal of destroyed rock from the tunnel shield. The method includes transporting rock from the face set in the tunneling shield screw conveyor and continuous mixing rock with hardener. Mixing rock with hardener produce at its exit from the screw conveyor, and then lead seal formed mixture. The method is carried out using the device to remove the destroyed rocks from the tunneling shield containing a pipe attached to the wall, the conveyor placed inside the pipe, the mechanism of mixing rock with hardener. For filing breed and hardener are made in pipe holes for the supply of the hardener and the hole with a valve for release of the breed. These holes are located in the same transverse axis of the tube in the plane of the rear end, which is also two shoulders lever mechanisms seals associated with the dampers. The method and the device allow to increase the reliability of carrying out excavating operations and to expand the scope of this method. 2 S. p. f-crystals, 1 Il.

The invention Rel is OYA.

It is known that the most common way to remove destroyed in the pit breed when working tunneling shield is transporting it back using a plate or scraper conveyors built into the machine (see "Mountain encyclopedia", t 4, M: Publishing house "Soviet encyclopedia", 1984, S. 269). Quite often used for this purpose, the conveying screw.

The prototype of the solutions proposed are a method and device for removal of destroyed rock from the tunneling shield whereby carry out the following.

1. Destroyed the breed is transported back installed in the tunneling shield screw conveyor, one which is connected with an independent drive mechanism, continuously mixing the rock with hardener.

2. The device includes a pipe attached to the wall that separates the pressure chamber; a conveyor placed inside the tube, mechanism, located behind the conveyor and having the shaft of the conveyor shaft with mixing paddles. Before the mechanism in the tube is the inlet of the hardener, and the bottom at the rear end of the installed valve for release of the breed. The shafts have independent drives (see Reparaturstau breed from tunneling shield", Japan). The disadvantages of the above described method and installation for removal of the breed are a limited scope and their low reliability. This is due to the fact that the mechanism with the shaft of the mixing of transported rock vanes, productive can only be used on soils. When injected into the pipe even small amounts of rock (common case in practice), the mixing mechanism will operate in emergency mode or it will be jamming and with all the ensuing consequences. For the same reason it is not possible to use this device in the tunneling shields used for excavations in rock or half-rock to the rock.

The aim of the invention is to expand the scope and improve the reliability of the method and device for removal of destroyed rock from the tunnel shield.

This goal is achieved by the fact that in the known method for removal of destroyed rock from the tunnel shield, including transport rocks back and continuous mixing it with the hardener, mixing rock with hardener lead at the outlet of the screw conveyor, and then produce the su, mounted on the wall, the conveyor placed inside the pipe, the mechanism of mixing rock with hardener, made in the pipe feed holes of the rocks of the hardener and the hole with a valve for release of the breed, the inlet of the curing agent and the hole with a valve for release of the breed are in the same transverse to the pipe axis plane one above the other on the rear end of the pipe, which is two shoulders lever mechanisms seals associated with the valves.

The following drawing shows a General view of the proposed device, which gives an idea about the way to remove the destroyed rocks from the tunneling shield, its distinctive characteristics in comparison with the prototype.

The device comprises a tube 1 with an interior screw conveyor 2. In the pipe 1 has three holes: 3 - for admission destroyed cutter body tunneling shield rocks on the gathering conveyor; 4 for the supply of hardener from the screw conveyor flow breed in form 11, which are subsequently condensed mechanisms seals, such as vibrators. Holes 4 and 5 are in the same transverse plane one above the other. On hole 5 is set two Naklua 9, mounted on the pipe 1. At the ends of the lever 9 fixed mechanisms of the seal 10 (as mentioned above, it can be vibrators of various designs). Two shoulders lever 9 is connected, moreover, with managing their mechanism, for example a hydraulic cylinder, ndwiga or pushing a rod which you can raise or lower the lever 9 (in the drawing, the control mechanism is not shown).

The device operates as follows. The waste stream is transported by a screw conveyor 2 through the pipe 1 to the 5 hole. At the same time in the hole 4 is supplied hardener (possible supply of hardener under pressure, under its own weight, continuously or periodically depending on the required quality of the product obtained in the form of 11). Mixed with hardener breed comes on sloping trays 6 to the 5 hole. Depending on which of the valves 7, overlying the hole 5 is opened, the waste stream is directed to the corresponding form 11. In the opposite form 11 at this time is seal rocks seal mechanism (the latter is processed on the breed). After filling out the form breed two shoulders lever 9 is translated to a new position, the result is a previously opened valve 7 zakryvai the breed, and the cycle repeats. At the same time form 11 with compacted rock is removed from the device and in its place is set empty.

Failure in the known device from the mechanism of mixing blades, a transition on the way to remove rocks, including seal treated with hardener breed in forms allow you to use this device not only the excavation excavations in soils, but also on rocky rocks. This method and device for its realization can be used in circuits with use of screw conveyors, but also other vehicles, such as scraper and plate conveyors, cranes. Additionally, using the form in which the seal rocks, of various sizes and configurations, you can end up getting various products, including for use in mine conditions.

1. The way to remove the destroyed rocks from the tunneling shield including transportation breed ago established in the tunneling shield screw conveyor and continuous mixing rock with a curing agent, characterized in that the mixing rock with hardener produce at its exit from the screw conveyor, and then lead uploadresume pipe, mounted on the wall, the conveyor placed inside the pipe, the mechanism of mixing rock with hardener, made in the pipe feed holes of the rocks and hardener and an aperture with a valve for release of the breed, characterized in that the inlet of the curing agent and the hole with a valve for release of the breed are in the same transverse axis of the tube in the plane of the rear end, which is also two shoulders lever mechanisms seals associated with the dampers.

 

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