DE7502140U - WIRE DRAWING MAT FOR LINES IN MINING AND TUNNELING - Google Patents

Description

! «TOO Heme, · * FrelilgrathslrnBe 18 P.O. Box 140

"Pit.-Anw. Hcrrmanii-Trantepahl Fern speaker: f 1013 5 1014

Telegram message: Bahr patents Herno Telex 08 229

Dipl.-I;

Dlpl.-Phys. Eduard Bolzle; · Dipl.-Ing. W. Horrmann-Trentepohl

PATENT LAWYERS

Re:

Note: Becker-Prünte GmbH, 4354 Datteln, August-Becker-Str. 10

Becker-Prünte GmbH, 4354 August-Becker-Str.

8000 Munich 40,

Elsenacher Strasse 17 Pnt. BetilM ' Telephone: 36 30 11

36 3012

36 30 13

Telogram to: Babetzpat Munich Telex 5215360

Bank accounts:

Bayorlsche Vorolnsbank Munich 952 Dresdner Bank AQ Herne 7-520> 99 Postal check account Dortmund 558 68-467

^Re '- ^: A 26 538 X / Se

Please indicate in the answer Please step according to:

Dates,

"Wire mesh mat for routes in mining and tunnel construction"

The invention relates to a wire mesh mat for routes in mining and tunnel construction, on their extension profiles the ends of the mat rest in the several parallel cross bars or wires with each other parallel longitudinal bars or wires are welded, at the ends of which the mat bearings are arranged, optionally with the wires and / or the rods of the Mat a fabric adgl. To hold back small pieces Backfill material is connected.

Such wire mesh mats transfer the forces occurring between successive structures the expansion profiles and thereby avoid breaks. she

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■ are generally applied with the help of handpieces connected to the mountain range. Are they with tissues. .. ;; made of wires, wire mesh, weather cloth, plastic films or the like. provided, they can either be immediate be connected to the mountains and hold / ■ then the shells flaking off the rock are returned, or the mats are backfilled axially or radially with mortar, concrete, anhydrite or the like Backfill materials that are introduced using more efficient methods than the handpieces, e.g. on-. ·. ·· ;; ■. or can be injected. . ■,

There are wire warping mats known in which he. mentioned wire mesh or mesh between the longitudinal and transverse rods or wires of the mat "is welded" (DT-GM 1 178 018); this technique can also be used "with _:. Plastic sheeting and similar materials are used. Insofar as the wire feed mat according to the invention has to be provided with these devices, it is therefore advisable to proceed in this way.

In particular, large-area wire mesh mats are known which are provided with a structural steel fabric "and ■ serve to reinforce concrete lining (DT-AS 1 027 611). These mats lie with their on the actual mat level protruding ends on the extension profiles. They wear eyes or hooks, because they are interlocked successive mats are connected to each other. The disadvantage of these mats is that they only come together used with formwork for reinforcement purposes because such formwork requires a lot of time and work underground.

7502140 05/18/78

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Round bars were initially used as a default and these are provided with end bends in order to create one in the line direction with the help of the resulting U-shape Pressure-resistant and, by connecting successive round bars, this type also in the direction of the route To gain a tight connection of successive route structures (DT-GM 1 714 827). From it Soon thereafter, a so-called wire tip distortion of the appropriate size arose, in which the wire tips act as distortion elements and as tensile and pressure-resistant Connection of route structures should be used (DT-PS 1 159 372). Distinguish wire tips However, it does not differ from wire mesh mats only by their relatively smaller area, but above all dadvxch that they are in contrast to the wire mesh mats the intersecting longitudinal and Cross bars or wires are missing. Therefore, such wire tips are neither for attaching the initially described tissue or the like. nor for reinforcement purposes usable. They also require an unusually high level of manual labor.

The invention has for its object to provide a wire warping mat whose main level does not like is usually behind, but between or in front of the extension profiles, so that this mat is either can even be used as a delay and then a proportionate between the mountains and their plains forms a wide space, which can be introduced radially or axially with the more efficient, small-sized

7502140 05/18/78

Backfill materials of the type specified at the beginning, E.g. it can also be filled with mortar or can be used together with "already introduced delay is in order to be able to mortar this in turn as reinforcement or to prevent damaged warpage supplement and thereby repair it.

'• This object is achieved according to the invention by that several longitudinal rods and wires at both ends ■ each have a bend and the end lengths the cranks as a support for the expansion '' '' profiles are used, and that several further longitudinal rods or wires are made shorter at both ends and their ends are angled, which serve as an abutment of the mat on the expansion profiles.

The invention has the advantage that when the mat is loaded, the mat is transverse to the longitudinal axis of the route cannot easily bend so far that the supports slip off the extension profiles. This is prevented by the abutments, which the mat preferably with the help of the end faces of the shorter longitudinal rods or wires preferably on Support the planks of the extension profiles. This is particularly useful because it makes one in the Direction of the route pressure-resistant connection of the structures is created, which has no connections or similar Requires additional fasteners, as each extension profile is at least partially in between the supports and the abutments is included.

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that the longer longitudinal rods or wires with their ends behind the expansion profiles and the mountains or allow the already introduced delay to be inserted. Between the already introduced delay and the packaging behind it and the new mat then creates the aforementioned space, the one with mortar if necessary by spraying each is introduced according to the required strength. This creates a homogeneous, reinforced connection with the: on the expansion lying delay and the overlying packaging. This balances out the irregularities the delay already introduced and the packaging, which is unfavorable in the case of printing have had an impact. It is thus causing cracks prevented in the mortar, which lead to the breaking out of shells, which in turn is a considerable Pose a risk of accident.

When rebuilding routes with deformed or damaged ones Delay can be prevented by installing the new mats that the existing delay must be replaced. As a result, the great amount of work associated with building through becomes considerable lowered. . ·

In particular, the new wire lagging mats are formed so that -drahte in the offsets of the longer longitudinal rods or,., _H connect to the end lengths angularly bent intermediate lengths whose over-

7502140 05/18/78

aisle curvatures in the mat level with the bends the end lengths of the shorter longitudinal rods or wires are aligned. Between the end lengths of the longitudinal bars parts of the extension profiles, e.g. the front or rear flange of an I-profile, can then be removed accommodate.

• In these cases in particular, we recommend the following designs _: where the longer longitudinal rods ***. or wires, the end lengths with the intermediate lengths enclose an acute angle and the intermediate lengths form an obtuse angle with the mat plane, the end lengths Mt of the mat plane also enclose an obtuse, but larger angle than the intermediate lengths on the shorter longitudinal rods or wires. This embodiment has the advantage that. the supports and abutments develop their full effectiveness only after a certain flexing of the mat, so that a certain resilience can be specified when the mats are bent.

(It is also expedient to proceed in such a way that the two

longitudinal rods or wires arranged on the outside use the shorter ones which form the mat abutments with their ends, while those between the two are on the outside arranged longitudinal rods or wires, further longitudinal rods or wires which are longer, which serve as supports.

In the case of the mat according to the invention, there is no need for a composite of successive mats

7502140 18.05J8

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to be tet. This is known to be important because the longitudinal bars of the mat are proportionate easily deform in their transverse direction and therefore the mats with each other or with the Expansion should be connected in such a way that the bending stresses between the balls as tensile forces occur in the longitudinal bars and can be removed from the support profiles. This embodiment of the mat according to the invention are intended in particular for those cases in which the Mats are used as primary distortion.

In one of these embodiments, the. Ends of the longer longitudinal rods or wires shaped like a hairpin bent in the direction of the bends. In these bends can then correspond -'- ' appropriately formed parts of the following mat. hang in, whereby the rock pressure by itself ensures that the hairpin-shaped openings close, whereby the mat composite. ■; ......

is consolidated.

However, it is also possible to counter the end lengths of the longer longitudinal rods or wires in the shape of a hook the direction to bend the crooks? this creates "another abutment for that. Expansion profile. ·

In the drawing 's'dMd several embodiments reproduced the invention; show it:

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FIG. 1 shows a first embodiment in a side view and in a broken-off representation of the mats according to the invention when used for repair work, whereby the dismantling- ■ · ■■■ · Profile is shown in section,

Figure 2 in the figure 1 corresponding representation

a second embodiment of the invention Wire warping mats for backfilling ^ - with concrete or mortar,

Figure 3 shows a first embodiment of the invention Wire warping mats, which are used as primary warping are used and

Figure 4 shows another embodiment of the invention Wire warping mats when used as primary warping.

In the embodiment of Figure 1 is an I-profile 1, which is used as an extension profile is shown · ^. Behind the I-profile and in front of the rock face shown at 2 there is a draft of wire warping mats with longitudinal bars 3 and cross bars 4. Behind the Generally'mit 5 designated wire warping mats and Handpieces 6 and 7 are located in rock face 2 as packaging material ο The line is being upgraded accordingly from individual structures, which in turn consist of the expansion profiles 1 and of the wire warping mats 5 and the packaging material 6 and 7 respectively the route has been expanded, it is under

7502140 05/18/78

Pressure, so that parts of the mat distortion 5 and the packaging material s 6, 7 "damaged or have been lost. The route must therefore be supplemented by further train material. to the mats generally designated 9 are used for this purpose. The hats have their turn Longitudinal bars or wires 1o and several transverse wires or bars 8, the bars or Cross wires at right angles and are welded together at their crossing points. Depending on the mat width Different numbers of cross bars are used (with a 35o mm mat width there are three Cross bars into consideration, with a mat width of 6oo mm z. B. five cross bars "e available).

Since the mat has the same design at both ends, it is sufficient to show only one extension profile in the drawing 1 and to describe the mat end assigned to it in more detail below:

The longitudinal wire 1o above is one of the two external longitudinal bars of the mat 9 and just like the non-visible, external longitudinal bar shorter than the longitudinal rods lying in between, one of which is visible at 11. This longer longitudinal rods each have a bend at both ends, which is generally designated by 12 and to an intermediate length 14 bent at an angle from the mat plane 13 and to an intermediate length 14 subsequent end length 15 of the rod leads. The end lengths 15 of the site form the supports the mat 9 on the extension profile 1.

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Pie shorter rods 10, which are arranged on the outer sides of the mat in the exemplary embodiment, for their part have end lengths 16, v, ^{r which are also} bent away from the mat plane 13. The front sides 18 of these end lengths form abutments "'""" which are supported on the underside 19 of the profile bottle 20 of the extension profile 1.

■ The transitional curvature 21 of the intermediate length 14 in the focusing plane 13 is aligned with the curvature 22 with which the end length 16 is angled in the rod 10 degrees.

The two arrows a denote the angle by which the intermediate length 14 with the mat plane included angle is larger than a right one, so that an obtuse angle is included. Correspondingly, the arrow b designates the angle by which the angle enclosed by the end length 16 with the mat plane 13 is greater than a right and therefore an obtuse angle. The arrows c indicate the relatively small one Angle by which the angle enclosed by the end length 15 with the intermediate length 14 is less than right and therefore an acute angle.

The mat can be attached to the extension profiles i from the outside as shown in FIG is. As a result, between the mats 9 and the mats 5 an intermediate space 24. This intermediate space can be packed with handpieces, Palls the mat, as will be explained below, with a

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Wire mesh is provided, the gap 24 can also be mortared and thereby the mat 5 including the packaging material 6 and 7 that is still present can be mortared in. As can be seen, the remaining delay does not need to be removed when building through.

In the exemplary embodiment according to FIG. 2, the same reference symbols denote parts that correspond to one another. in the The difference to the exemplary embodiment according to FIG. 1 is the mat 9 on the one hand on the rear splash 25 of the expansion profile attached, so the splash, which faces the mountains 2, and also carries the mat is a wire mesh 26 which is welded between the transverse rods 8 and the longitudinal rods 10. As a result, the mortar described, denoted by 23, can be applied in the space 24 is.

In the embodiment of Figure 3, in which also the same reference numerals denote corresponding parts, the mats 9 are the primary delay set and therefore connected to each other. The hairpin-shaped bend is used for this purpose 27, which is attached to the strand 15. The end lengths 15 in the * embodiment according to FIG are otherwise longer than the end lengths in the exemplary embodiments according to FIGS. 1 and 2, because they cover the entire width of the flange 25.

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7502140 18.0578

In the exemplary embodiment according to FIG. 4, the wear End lengths 15 hook-shaped UmMegungen '28 to brace the mat with the extension profile see below.

The hairpin-shaped bends 27 and the hook-shaped ends 28 can also be used together on a mat.

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75D2140 ia

Claims (4)

ί »-ι - 13 - claims for protection 1. Wire warping mat for routes in mountain and Tunnel construction, on whose extension profiles the ends of the mat rest, in which several pa- .. ^s - · ^; parallel cross bars or wires with each other parallel longitudinal bars or wires are welded, at the ends of which the mat ■ ^s * bearings are arranged, where appropriate with the wires and / or the bars of the mat ijf te a tissue ο., like. to hold back small- . , lumpy filling material is connected, characterized in that several longitudinal rods or wires (11) are attached both ends each have a bend (12) and the end lengths (15) of the bends' "■ (12) serve as a support for the expansion profiles (1), and that several more longitudinal bars or wires (10) shorter at both ends. formed and their ends (16) angled that serve as Vf id he succumbed to the mat on the extension profiles. 2. wire warping mat ^ Txach claim 1, characterized in that in the bends (12) the longer Longitudinal rods or wires (11) to the end -H- 7502140 05/18/78 • ,,,.:. F'ii. "" ' • <·· · «na -U- gen (15) intermediate lengths bent at an angle (14) connect their transition curves (21) into the mat level (1Z) with the bends (22) of the end lengths (16) of the shorter ··· ■ '■' ■■ · ■ · - longitudinal bars or wires (10) are in alignment. 3. wire warping mat according to claims 1 and 2, characterized in that (T ' that on the longer longitudinal bars or wires (11) the end lengths (15) with the intermediate lengths (14) an acute angle and the intermediate lengths (14) an obtuse angle with the mat plane (13) include, with the shorter longitudinal rods or wires (10) with the end lengths (16) the mat level (13) also has a blunt, but larger ¥ angle than the intermediate lengths (14) include. 4. Wire warping mat according to claims 1 to -3 » characterized in that _ that the two longitudinal bars arranged on the outside ';)' or wires (10) are the shorter ones that start with '' ■ " their ends (15) serve as mat abutments, while the outside arranged between the two j neten longitudinal rods or wires (10) located Chen further longitudinal rods or wires (11) the i: are longer ones that form the supports. H ι · 5 ·. Wire warping mat according to requirements 1 to 4 » 'Ί characterized by J that the end lengths of the longer longitudinal rods or -wires (11) hairpin-shaped in the direction of the Bends (12) are bent. 7502140 05/18/78 - 15 - 6, wire warping mat according to claims 1 to 4 or claim 5> characterized in that the end lengths (15) of the longer longitudinal rods or wires (11) hook-shaped bends (28) to enclose of the expansion profile i. 7502140 05/18/78