SU1465588A1 - Mine support - Google Patents

Abstract

The invention relates to mining and I.J.6. used for fastening mine workings. The purpose of the invention is to increase the reliability of the lining in difficult mining and geological conditions. The support consists of segments (C) made from special profiles and intermediate links (PZ) with a radius of curvature equal to C. The PZ and C are installed along a helical line with the possibility of contacting the flanges L7 C in adjacent turns. In the bottom (D) of each C in the overlap with the PZ, the holes are made, and the D 9 profile of each PZ has longitudinal slots on both sides 10. Inside the P profile of the PZ there are tapered longitudinal slots 7 with holes and fixed with nuts 6. Bolts with spring-loaded washers are inserted into the holes in D of each C, longitudinal slits and screwed into nuts 6. Inside the PZ has an equal distance from the P profile of the PZ diaphragm 8, the cavity between which and D is filled with corrosion th seal. The support has gaskets, covering flanges C in adjacent turns, and U-shaped overlays. The latter are laid on gaskets to close the gap between adjacent PZ turns. For the production of cementing works around the workings of C in D have bobbi. 3 hp f-ly, 8 ill. 8 (L 4 O) followed cx 00

Description

one

The invention relates to the mining industry and underground construction, specifically to the fastening of underground workings, mainly under the conditions of weak, unstable rocks.

The purpose of the invention is to increase the reliability of the support in complex geological conditions.

FIG. I shows lining, general view; K5 of FIG. 2 shows section A-A in FIG. one; in fig. 3 - the connection of the lining segments with each other, in figure 4 the connection of the intermediate link with the lining segment; in fig. 5 is the same in cross section; FIG. 6 - installation of gaskets of sheet steel; in fig. 7 is the same, of the synthetic material in FIG. 8 - the same, metallic (cast or stamped).

Mine supports including € 1T carriers

Segments 1, made of special profile, and intermediate links 2 of a ferrubber profile. Lining segments are installed along a helical line with the possibility of flanging special profiles in adjacent turns. Gaskets 3 can be installed between the flanges.

The segments and intermediate links are fastened with rigid bolts, between the heads of 4 of which and the bottoms of special profiles there are spring-loaded washers 5. The bolts are screwed into the nuts 6, which are rigidly fixed to the tapered guides 7.

Each intermediate link is made with a radius equal to the radius of the segments, and has a diaphragm 8 that is equidistant from the bottom of the link, and on both sides of the bottom 9 there are slots 10, which are covered with conical guides. In cavity I 1 between the diaphragm and the bottom of the link, seals are placed against corrosion of the threaded joint with the support segments and to prevent cement slurry in the cavity during the operation of the tamping work behind the production support.

To prevent possible penetration into the production of the acreplate material, the gaskets 3 are designed to cover the flanges of the special profiles in the adjacent turns, and the gap between the adjacent links in the coils is blocked by U-shaped plates 12, which are laid on the gaskets. Afterbirth

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They can be made in several versions: gasket 13 - curved from thin-rolled steel with a girth of flanges of adjacent special profiles, designed mainly for loose rocks, gasket 14 - equipped with an elastic material (non-combustible rubber or plastic) as a seal in watered rocks or instead of picketing during cement works, the gasket 15 is metal massive for strengthening the longitudinal connection or with the elongated middle part 16 with an increased pitch of the support turns.

When conducting grouting works, it is planned to carry out the required number of bobschik 17 in the heads of the segments.

The support is installed as follows.

Bolts are preloaded in the nuts 6 fixed to the rails 7. Then the end of the bottom of the intermediate link 2 is guided to the tapered guide so that the bolts fit into the JO slot, and then finally tighten the bolts. In the intermediate link is placed the lottery. Similarly, another intermediate link is attached to the other end of the segment until the complete turn of the lining is completed, with the end of the last segment diverted from the beginning of the first wide specirrophil and placed in the middle of the segments if necessary to be laid when the next turn is installed. To eliminate the gap between the intermediate mi-set gaskets. In the production of cementing, segments with bobs are installed in the roof and sides of the production to connect the injection pump to the pump stand.

Claims (4)

Invention Formula one . Mine lining, including segments of special profile and overlapping segments installed with a gap between the ends, with the possibility of displacing the segments relative to each other intermediate links of the grooved profile, included with a radius of curvature equal to the radius of curvature of the segments, and having connecting parts with washers and nuts, different from so that., in order to increase the reliability of the lining operation in difficult geological conditions, the lining segments are installed along a helical line with the possibility of flanging special profiles in adjacent turns, with-the bottom of the special profile of each segment in the areas of overlap with intermediate link holes, and the bottom the profile of each intermediate link has, on both sides, longitudinal np VpesH and intersecting slots installed inside the bottom, tapered guides with holes coaxially with the holes of the segments, with an intermediate The links are mounted with the possibility of interaction with the inner surface made in rigidly fixed on the outer surface of the tapered guide nuts. 2. Mine lining in accordance with claim 1, characterized in that each  the intermediate link has a gap between the diaphragm rigidly attached to the walls and the gap between which and the bottom is filled with an anticorrosion seal. 3. Shaft support according to Claim 1, characterized in that it is provided with gaskets, flanges of special profiles in adjacent turns, and U-shaped plates, which are laid on gaskets with the possibility of closing the gap between adjacent intermediate links. with special segments and clamps - 20 turns lanyards with them by means of bolts, and washers are made spring-loaded and placed between the bottoms of the speprprofipe segments and heads of bolts that are missed in the holes of the segments 4. Shakhtin lining pop. 1, characterized in that the segments in the bottoms of the special profile have bobbins for the production of embossing works. A a 3 3 sri.g  four (fftt9.6