SU756025A1 - Pneumatic ballon support section - Google Patents

Description

The invention relates to the development of the underground method of coal and other stratal deposits of minerals, namely the fastening of the mining faces with pneumatic bolting, and can be used to create mechanized roof supports.

Known section pneumatic lining, including downhole and zavalnaya parts, consisting of laid one on the other soft shells and interconnected by a mechanism for shifting [1].

The disadvantage of this lining is its low reliability when moving sections.

The closest technical solution to the proposed is the section of pneumatic bolting, which includes downhole and downhole parts, consisting of stacked one on top of the other and interconnected by the mechanism of movement of elastic shells [2].

Due to one of the advantages of pneumatic, good adaptability to the unevenness of the soil and the roof of the reservoir in the presence of waviness of lateral rocks, local dumps and transient geological disturbances, the possibility of tilting is not excluded.

2

panels of the downhole and zavalnaya parts of the section in different directions in the plane of the reservoir, which leads to jamming of the panels in the hinges, the appearance of residual deformations and, ultimately, to the loss of a working ₅ ti lining.

The aim of the invention is to improve the reliability of the movement of the lining section.

This goal is achieved by the fact that the external elastic shells of the downhole part are made with wedge-shaped support shoes, the tip of which is directed in the direction of movement of the lining section, and the movement mechanism is made in the form of rigid traction mounted on the middle elastic shells of the bottomhole and lower part, and the stop for limiting the offset of the external shells of the downhole part,

rigidly secured to the bollard.

FIG. 1 shows a lining section, a common airfield; in fig. 2, 3 and 4 - various 20 positions of the support section when shifting.

The pneumatic support section consists

from downhole 1 and zavalnaya 2 parts, shells 3, support shoes 4, and rigid traction 5

with an emphasis 6.

756025

Shell 3 in the downhole 1 and zavalnoy 2 parts of the section laid one on another and interconnected at the contact points. At the same time, the downhole part 1 must contain at least three shells. The supporting shoes 4 are wedge-shaped and attached to the extreme shells 3 zaboy- ⁵ parts hydrochloric section from the surrounding rocks so that its tip has been directed toward the moving section. Hard draft 5 is made telescopic and allows you to adjust it to the length. The stop 6 is fixed on a rigid pitch 5 at a right angle and must ensure contact with the outer shells of the bottom-hole part of the section at the moment when the shifting of the filling part ends.

The section works as follows.

When installed in a downhole, compressed air is supplied to the shells 3 of the downhole part 1 of the section (FIG. 2).

In contact with the supporting shoes 4 with the soil and the roof of the reservoir and the appearance of lateral loads on the lining, the downhole part 1 of the section temporarily loses its stability, the middle shell 3 moves with two extreme rolling like the rolls of the rolling mill in the direction of the bottom, and carries along the hard end 5 2 sections. The movement continues until the stop 6 comes into contact with the extreme shells of the downhole part of the section, which again acquires a stable position.

Then they are filled with compressed air of the shell of the filling part 2 of the section (Fig. 3).

In this position, being under constant feed with compressed air, the lining sections support the roof of the clearing face within the bottomhole space.

Moving section lining after the advancement of the stope is carried out by alternately filling and emptying the shells 3 downhole 1 and zavalnoy 2 parts of the section. When moving first

compressed air is released from the shells of the downhole section. Due to the elastic deformations that occurred during the tightening of the intake section, the shell of the bottomhole section after emptying tend to take a starting position relative to each other, and the bottomhole section moves to the bottom (Fig. 4). Then it is filled with compressed air of the casing of the bottom-hole part of the section and in the manner described above (FIG. 2), pulling up the zaval part of the section.

Thus, by alternately filling and emptying the shells of the downhole and downhole parts of the section, the shafts are shifted along the strike of the formation by changing the shape of the supporting element of the section during filling and emptying.

Claims (1)

Claim The section of pneumatic support, including the downhole and downhole parts, consisting of one-sided and interconnected mechanism of movement of elastic shells, characterized in that, in order to increase the reliability of the section of the support, the external elastic shells of the downhole part are made with wedge-shaped supporting shoes, the point of which is directed towards the displacement of the lining section, and the movement mechanism is made in the form of a rigid thrust fixed on the middle elastic shells of the downhole and lower parts, and stop to limit the displacement of the outer shells of the downhole part, rigidly fixed on the rod.