DE8023007U1 - CLOSED ROUTE EXTENSION, IN PARTICULAR FOR UNDERGROUND PIT ROUTES - Google Patents

Description

Applicant: Gebr. Becker Apparatebau, Zementstrasse 112, 4720 Beckum

Closed route expansion, especially for underground mine routes

The invention relates to a closed route extension, in particular for underground mine routes, consisting of Multi-part support frames made of sheet steel, which are arranged one after the other in the longitudinal direction and are made of at least each composed of a joint element arranged on the two section joints and a cap element arranged in the ridge area are.

A known route expansion of this type (DE-AS 27 02 672) consists of relatively thick-walled expansion frame elements, which are intended for the final expansion and do not need additional support elements such as anchors or bell arches. The expansion frames are rigidly and detachably connected to one another in the circumferential direction.

A major disadvantage of the known route expansion is that the assembly is relatively complex. The rigid connection of the successive expansion frames requires

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considerable assembly tents, within which the üeryle people largely are unprotected against falling rock.

All other expansion methods for underground routes known to date also have the essential ones Disadvantage that the introduction of the expansion is relatively time-consuming and that the miners largely during the expansion have to work unprotected against falling rock. This applies to both the so-called anchor expansion as well as for an expansion with support arches.

The invention is based on the object of avoiding the disadvantages of the known expansion devices and of closing To create route expansion that can be assembled particularly quickly and after only a preliminary one Assembly ensures extensive protection of the miners against falling rock.

To solve this problem, it is proposed according to the invention, that the expansion frame elements have an outwardly concave channel shape, being convex at the edges of the channels Connect outwardly curved edge areas, dio the accordingly shaped, adjacent edge areas overlap, the expansion frame elements having a wave-like shape Have cross-sectional shape in the longitudinal direction.

The expansion frame elements according to the invention allow a rapid preliminary expansion of the route, since self-supporting expansion frames can be created from them in a short time, the individual expansion frame elements of which can be put together very easily. For this purpose, it is sufficient that the adjacent edge areas of the extension frame elements are pushed loosely over the edge regions of the preceding extension frame element. As soon

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the extension frame elements assembled to form an extension frame are connected to each other, there is a temporary protection of the miners working below against falling Rock. This protection is effective both during a subsequent final expansion with a support frame and when the anchors are attached. At a Expansion with support frames, these are simply inserted into the outwardly curved edge areas. With an expansion With anchors, the fastening holes for the tie rods to be used are created through corresponding openings in the extension frame elements introduced through into the rock. During the drilling, the loosening rock slips on the outer one Surfaces of the support frames without endangering the miners.

According to a further feature of the invention, the extension frame elements are provided with beads oriented in the longitudinal direction of the route. The provision of beads increases the rigidity and load-bearing capacity of the extension frame.

It has also proven to be useful that the cross-section of the extension frame elements, the amplitude, the width and optionally the radius of curvature of the channel are substantially greater than the amplitude, the width and optionally the radius of curvature of the edge areas.

Further features of the invention emerge from the further subclaims and from the following description, in the preferred embodiments of the invention in detail are described. Show it:

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Figure 1: a perspective view of a

Track extension with several extension frames arranged one behind the other,

Figure 2: a single extension frame element,

Figure 3: an expansion frame element with beads oriented in the longitudinal direction of the route,

FIG. 4: a schematic view of the end face of an expansion frame,

FIG. 5: a view according to FIG. 4 of another expansion frame,

Figure 6: a longitudinal section through an extension with an anchor,

FIG. 7: a longitudinal section analogous to FIG. 6 with a support frame,

FIG. 8: a perspective view of an annular tube, which consists of expansion frames and elements is arranged in a shaft.

Different expansion frame elements are each to an expansion frame 1 or 2 assembled. In Figure 1, the expansion frame 1 consists of two lateral push elements 3 and 4, which are to both Sides of the tunnel are provided and a cap element 5 in the ridge area. The adjacent expansion frame 2 has two sides = Butt elements 6, to which two cap elements 7 adjoin, which meet in the ridge area.

The shape of the individual extension frame elements is clearly visible from the sectional drawings of FIGS. 6 and 7. The expansion frame elements have a groove shape, with an outwardly concave, d. H. inwardly convex groove. The channel 8 has one width b. Two outwardly convex edge regions 9 and 10 adjoin the channel 8. Have the expansion frame elements a cross-sectional shape in the longitudinal direction, which can be described as wave-like. The amplitude A, the width b and the radius of curvature of the channel, which changes over the entire wave of the channel, are each significantly larger

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as the amplitude B, the width a and the changing Radius of curvature of edge areas 9 and 10.

In the edge areas as well as at the ends of the extension frame elements Through holes are provided which are used to accommodate connecting elements. With the connecting elements not shown, for example screws, are each overlapping through holes in expansion frame elements sets and adjacent in the circumferential direction or longitudinal direction Ausfcaielemente firmly clamped together.

The beads oriented in the longitudinal direction of the route are shown in FIG

12 can be seen.

In the embodiment according to FIG. 7, there are support arches

13 are provided, which can have any suitable cross-sectional shape and which correspond to the inner contour of the Route expansion to form so-called bell arches.

In the embodiment according to FIG. 6, the anchoring of the support frame, which is made of sheet steel, is carried out with the aid of mountain anchors

14 made. The through holes 15 for the rock anchors 14 arranged in the edge regions 8 and 9 are clear from FIG visible.

From FIG. 2, through holes 16 arranged in the middle of the channel can also be seen, which are used for backfilling the route extension can be used with concrete. The concrete is in the free spaces between the mountains and the outer surfaces of the support frames brought in.

The width of the extension frame elements is between 30 and 120 cm The width of the channel 8 is between 20 and 110 cm. The practical width _a for the edge areas 9 and 10 has proven to be a Proven size between 5 and 20 cm.

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The distance between the beads 12 is in the range from 2 to 5 cm. The sheet metal thickness of the extension frame elements is between 0.5 and 3 mm. The ratio of the width b of the channel 8 to the width a of the edge regions 9 and 10 is in the range of 3: 1 to 8: 1.

Claims (1)

Patent attorney © '··· ""' "'" "' Elaa-BrandetronrvStraBei + a D.4800 Bielefeld 1 Dipl.-Ing. Bodo THIELKING Telephone: (osao βοβ2ΐ ♦ Dipping. C * to ELBERTZHAGEN _Tele ", _{93aose anwlt d} PostBoheoKkontoi Ηβη 3001Β3-302 Attorney filesxeloheni 12 0703. August 25, 1980 Protection claims 1. Closed route expansion, especially for underground Pit sections, consisting of multi-part support frames arranged one after the other in the longitudinal direction made of sheet steel, which consists of at least one impact element each arranged on the two line joints and one in the The cap element arranged in the ridge area are composed, characterized in that that the expansion frame elements (3; 4; 5; 6; 7) have an outwardly concave channel shape, with the edges of the Grooves (8) connect convex outwardly curved edge areas (9; 10) which overlap the respective adjacent edge areas, wherein the expansion frame elements have a wave-like cross-sectional shape in the longitudinal direction of the route. 2. Closed route expansion according to claim 1, characterized characterized in that the expansion frame elements (3; 4; 5; 6; 7) are oriented in the longitudinal direction Beads (12) are provided. 3. Closed track expansion according to claim 1 or 2, characterized in that for the cross-section of the extension frame elements, the amplitude (A), the width (b) and, if applicable, the radius of curvature of the, Groove (8) are much larger than the amplitude (B), the width (a) and, if necessary, the radius of curvature of the Edge areas (9; 10). t ■ ff · * ■ · 070 on August 25, 1980 4. Closed route expansion according to one or more of claims 1 to 3, characterized in that that in the overlapping edge regions (9; 10) supporting arches (13) are provided. 5. Closed route expansion according to one or more of claims 1 to 4, characterized in that that through holes for rock anchors (14) are provided in the edge areas. 6. Closed track expansion according to one or more of claims 1 to 5, characterized in that that in the edge areas (9; 10) and on the overlapping joints of the extension frame elements (3; 4; 5; 6; 7) through holes (11) are provided, the are each penetrated by a common connecting element. 7. Closed track expansion according to claim 6, characterized in that the connecting elements penetrating the through holes (11) are connecting screws. 8. Closed track expansion according to one or more of claims 1 to 7, characterized in that that the width of the extension frame elements (3; 4; 5; 6; 7) is between 30 and 120 cm. 9. Closed route expansion according to one or more of claims 1 to 8, characterized that the width of the channel (8) is between 20 to 110 cm. 0. Closed route expansion according to one or more of claims 1 to 9, characterized 070a August 25, 1980 shows that the width of the edge areas (9; between 5 and 20 cm. 11. Closed route expansion according to one or more of the Claims 1 to 10 / characterized in that the bead spacing is in the range of 2 to 5 cm. 12. Closed track expansion according to one or more of claims 1 to 1 "*, characterized that the sheet metal thickness of the expansion frame elements is now from 0.5 to 3. 13. Closed track expansion according to one or more of claims 1 to 12, characterized that the ratio of the width (b) of the channel (8) to the width (a) of the edge areas (9; 10) 3: 1 to 8: 1. 14. Closed route expansion according to one or more of claims 1 to 13, characterized in that that in the channel (8) through holes (16) are provided as filling openings for backfill material are.