SU64765A1 - Method of fastening collapsed horizontal workings - Google Patents

Description

The proposed method of fastening collapsed horizontal workings refers to the ways in which the fastening is carried out with the help of a lifting shield mounted on retractable racks. The latter are mounted on a trolley. The peculiarity of the proposed method is that after lifting the roof, an ordinary drift mount is erected under which fires intended for supporting the shield left under the roof are laid out.

In FIG. 1 shows a front view of a mount; FIG. 2 - a side view of it.

The shield consists of a low platform 1 on wheels (or skating rinks), freely passing through the development and moved along the track.

The platform is fixed at its four corners by stationary tubular supports 2, in which cavities retractable tubular supports 3 are placed. On the latter, with the lower position of the supports, a rectangular shield 4 is assembled; part of the shield - the visor 5 is facing forward in the form of a console.

The shield consists of D1vukh lateral longitudinal beams on which the cross member of the cut. This frame is covered with slabs.

With the aid of manual cable winches, 7 retractable racks (tubes) carrying the shield rise upwards. One end of the rope is fixed on the upper end of the fixed stand 2 at point 8. It passes between this fixed and pull-out stand, and then through the roller 9, placed below the stand 3 and through the roller 10, fastened at the top on the fixed stand 2, to the winch. The second end of the rope is fixed on the winch drum.

Working with this shield to restore the collapsed workings is performed as follows.

In the preserved part of the excavation plate, a shield is assembled at the lowest position of the extended posts. Then the platform with the shield moves, as far as possible, forward to the rock blockage. Under the cover of the shield (visor), disassembly and loading of the bags onto the conveyor 12 takes place, transferring the goods in turn to pitcarloder 13 and from there to the carriage 14.

As the rock is dredged, the platform with the shield moves on until the rear of the shield leaves the last surviving frame. Then the shield is raised, as far as possible, to the roof of the dome. After that, having inserted the sliding racks 3. In the lower fixed racks 2, they proceed to the installation under cover of the shield of the permanent wooden fastening. Then, bonfires are laid on the upper .of installed fire right up to the shield itself. It is possible instead to make a space being buried by rock.

After that, retractable racks are released and lowered them, leaving the entire shield at the roof.

If, due to the unevenness of the roof of the dome above the shield, there remains free space, then it can be forgotten when the shield occupies the next flight of height.

The new shield on the extendable racks of the platform continues to work in the same order.

Thus, being a temporary mount, the shield makes it possible under its cover to perform all operations: rock discharging, installation of a permanent mount and filling of the void above the permanent mount, thereby accelerating the rate of recovery;

With the passage of new development workings or even tunnels in those cases when the use of temporary fastening is required, the shield can be used as follows.

The platform with the shield, at the lowest position of the retractable racks, moves forward on the rollers beyond the limits of the last frame of the fixed attachment as it goes out

rocks with jackhammers or even explosive materials. At the same time, the height of the excavation in the rough should be (such that the shield is placed over the bump to them by a permanent mount.,

As soon as the rear part of the shield goes beyond the last frame of the permanent attachment, it is lifted up to the roof and picked up on temporary racks. After that, the extendable racks are lowered and the shield remains, at the Krsvlrg, supported by temporary racks.

On the platform, a new shield is assembled, which moves further along with the penetration, and a permanent anchorage is made behind the already established shield.

If it is possible to push the platform with the help of an electric locomotive, then you can make a shield of considerable length with the installation of not two, but several pairs of sliding racks.

Thus, in the described case, the shield, being a temporary fixture, allows us to standardize the installation of the latter and creates a safe working environment, which makes it possible to significantly increase the rate of penetration of the workings.

For vaulted excavation a light vaulted frame shield can be applied.

Subject invention

The method of fastening the circular horizontal workings with the help of a lifting shield mounted on sliding racks mounted on a trolley, characterized in that after lifting the shield under the roof, an ordinary Schtrekovo mount is erected on which fires are laid, intended to keep the shield left under the roof.

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