Device for sealing a pipe in a bore through a tunnel wall or the like

Abstract

The invention relates to a device for sealing a pipe in a bore through a tunnel wall (12) or the like, characterized by two cylindrical stable rubber-like hose pieces of equal length with different diameters, an outer rubber (6) and an inner rubber (7), wherein an annular closure (8) is arranged at one end between the inner rubber (7) and the outer rubber (6), wherein an annular closure filling side (9) is arranged at the other end of the outer rubber (6) and the inner rubber (7), wherein the ring-shaped closures (8, 9) keep the rubbers (6, 7) at a distance, wherein an outer ring-shaped compression ring (4) is arranged on the outer rubber (6) both at the level of the closure (8) and at the level of the filling side of the closure (9), and an inner ring-shaped second compression ring (5) is arranged opposite each other at the same level in the inner rubber (7), wherein the ring-shaped compression rings (4, 5) press the ends of the cylindrical rubbers (6, 7) airtight against the closures (8, 9), wherein a valve (10) for a filling line (1) is arranged in the filling side closure (9), the outlet of which ends between the two rubbers (6, 7), and wherein at least one receptacle (11) for an insertion aid (2) is arranged in the filling side closure (9).

Description

[0001] The invention relates to a device for sealing a pipe in a bore through a tunnel wall or the like.

[0002] It is common practice to seal a pipe in a tunnel wall or similar structure by grouting the annular space between the pipe and the tunnel wall with injection material. However, this method does not always completely seal the annular space, allowing moisture to penetrate uncontrollably into the tunnel interior. Therefore, comprehensive safety inspections must be carried out regularly in tunnel walls and dams. The most important of these is leakage monitoring. Since no dam or reservoir is completely watertight, this is continuously monitored and measured. The existing measuring and monitoring points are outdated and must be replaced.

[0003] The object of the invention is to provide a device for sealing a pipe in a bore through a tunnel wall or the like, which reliably seals the annular space between a pipe and the tunnel wall or the like against the ingress of moisture into the interior of the tunnel.

[0004] According to the invention, the problem is solved by the features of the main claim. Embodiments of the invention are described in the dependent claims.

[0005] The advantage of the invention is that the device according to the invention reliably seals the annular space between a borehole in a tunnel wall or the like and a pipe located therein against the penetration of moisture.

[0006] The invention is explained in more detail below using an exemplary embodiment. The accompanying drawings show Fig. 1: a device according to the invention, Fig. 2: the device according to the invention with an insertion aid, Fig. 3: the device in a tunnel wall in the unstrained state and Fig. 4: the device, installed in the structure in a tensioned state.

[0007] In Fig. Figure 1 shows a device for sealing a pipe, in particular a filter pipe 13, in a bore through a tunnel wall 12 or the like. At one end of two cylindrical, in particular robust, rubber-like hose sections of equal length with different diameters, an outer rubber 6 and an inner rubber 7, an annular closure 8 is arranged between the inner rubber 6 and the outer rubber 6. The length of the rubbers 6 and 7 corresponds approximately to the diameter of the bore. At the other end of the outer rubber 6 and the inner rubber 7, another annular closure, the filling end 9, is arranged. Both closures, i.e., the closure 8 and the filling end closure 9, are located between the outer rubber 6 and the inner rubber 7 and have, at least approximately, a square or rectangular cross-section.The outer rubber 6 is attached and sealed to the closure 8 and the filling end closure 9 by means of an outer compression ring 4, respectively. Similarly, the inner rubber 7 is attached to the two closures 8 and 9 by means of an inner compression ring 5, creating an airtight seal. The two ring-shaped closures 8 and 9 thus maintain the distance between the two rubber-like tube sections 6 and 7. The compression rings 4 and 5 press the ends of the two tube sections or rubbers 6 and 7 firmly against the closures 8 and 9, so that the space between the two rubbers 6 and 7 is sealed airtight.

[0008] A valve 10 is located in the closure of the filling side 9. It is specifically provided that one outlet of the valve 10 terminates between the two rubber parts 6, 7.

[0009] In the installed state of the device, a medium, for example air, is forced through valve 10 into the space between the outer rubber 6 and the inner rubber 7, causing the outer rubber 6 to be forced outwards and the inner rubber 7 inwards. This transforms the device into an inflatable annular seal 3, as shown in the Fig. 2, Fig. 3 to Fig. 4. The filling side 9 of the closure contains receptacles 11 for an insertion aid 2, as shown in Fig. 2.

[0010] Fig. 2 shows the device according to Fig. 1 with an insertion aid 2. In the exemplary embodiment, four receptacles 11 are arranged in the filling-side closure 9 for the insertion aid 2. Each receptacle has an external thread on one side, through which it is screwed into the filling-side closure 9. On the opposite side, each receptacle has a blind hole for receiving the insertion aid 2. Depending on the depth of the bore, which can be several meters, the insertion aid 2 consists of at least one insertion rod or tube 15. On the side facing the annular seal 3, a cross member 16 with two nozzles 14 is arranged such that each nozzle 14 can be pressed into two receptacles 11. An O-ring is arranged on each nozzle 14 to ensure that the nozzles 14 are held firmly in the receptacle 11, thus holding the annular seal 3 against the insertion aid 2, and can be removed after the seal has inflated.In the exemplary embodiment, the insertion aid 2 consists of two insertion tubes 15 with crossbeams 16 and nozzles 14, which are connected by a sheet metal plate 17 at the ends opposite the crossbeam 16. The insertion aid 2 can, by sliding it up or down, insert the annular seal 3 onto a pipe, in particular a filter pipe 13, into a borehole in a tunnel wall 12 according to [reference missing]. Fig. 3 or Fig. Position 4 at each depth.

[0011] Fig. Figure 3 shows the device in a tunnel wall 12 in the unstressed state. A bore is located in the tunnel wall 12 into which the filter tube 13 is inserted; the bore may initially be offset or enlarged, as described in [reference]. Fig. 4. The annular seal 3, i.e. the device according to, is attached to the filter tube 13. Fig. 1 with the outer pressing ring 4, the inner pressing ring 5, the outer rubber 6, the inner rubber 7, the closure 8, the filling side closure 9 and the valve 10, is pushed on and is inserted by the insertion aid 2 according to Fig. 2 is manually moved into the desired position. A medium, for example, air, is then injected into the space between the two rubber seals 6 and 7 via the filling line 1 screwed into the valve 10. This inflates the annular seal 3 and fixes it in the borehole. The inflation presses the outer rubber 6 against the borehole wall and the inner rubber 7 against the filter pipe 13, thus sealing the space between the borehole wall and the filter pipe 13. Once the inflated annular seal 3 is firmly in place, the filling line 1 is unscrewed from the valve 10, the insertion aid 2 is pulled out of the receptacles 11, and both are removed from the borehole. The free space above the annular seal 3, up to the offset bore, is then filled with an injection compound 18. The space above this, in the enlarged bore, remains unfilled. Both are shown in Fig. 4.

[0012] In Fig. Figure 4 shows the device in its tensioned state, installed in the structure. The inflated annular seal 3 seals the space between the filter pipe 13 and the tunnel wall 12. The inflated annular seal 3 is located in the smaller diameter of the offset bore. The upper part of the bore is large enough to provide sufficient installation space for the measuring equipment during leak monitoring. The subsequent smaller diameter is only large enough to allow the filter pipe 13 to be inserted, leaving enough annular space between the outer diameter of the filter pipe 13 and the borehole wall to accommodate the annular seal 3. The Fig. 3 and Fig. 4. The filter tube 13, which has already been inserted, is placed in the bore, in particular before the device, especially the annular seal 3, is inserted, or in particular at least before the medium is pressed into the space between the two rubbers 6 and 7, or, for example, the device, in particular the annular seal 3, is arranged on the filter tube 13 and inserted into the bore together with the filter tube 13 and then by the insertion aid 2 according to Fig.The annular seal 3 is manually positioned as desired, and then the medium is injected into the space between the two rubber seals 6 and 7. The length of the annular seal 3 corresponds approximately to the diameter of the bore in which the annular seal 3 is tensioned. The filter tube 13 may have openings below the annular seal 3, i.e., it may be perforated, so that any water present can also enter the filter tube 13 from the outside, rise to the top, and be included in the measurement data. The water can then be drained. The filter tube 13 has no openings at least from the area where the annular seal 3 is located to its upper end. The annular space in the smaller bore between the borehole wall and the filter tube 13 is filled with an injection compound 18 from the annular seal 3 up to the offset bore.The annular space seal 3 thus seals between the borehole wall, for example the tunnel wall 12, and the filter pipe 13 and at the same time serves as a kind of "support" for the injection mass 18 until it hardens, so that it cannot fall further down into the annular space. REFERENCE MARK LIST 1 filling line 2. Insertion aid 3 Annular space seal 4 Outer press ring 5 Inner press ring 6 Outer rubber 7 Inner rubber 8 Closure 9 Closure Filling side 10 valve 11. Admission assistance 12 Tunnel wall 13 Filter tube 14 stubs 15 Insertion tube 16 crossbeams 17 sheets 18 injection mass

Claims

Device for sealing a pipe in a bore through a tunnel wall (12) or the like, characterized by two cylindrical, stable, rubber-like hose sections of equal length with different diameters, an outer rubber (6) and an inner rubber (7), wherein an annular closure (8) is arranged at one end between the inner rubber (7) and the outer rubber (6), wherein an annular filling-side closure (9) is arranged at the other end between the outer rubber (6) and the inner rubber (7), wherein the annular closures (8, 9) keep the rubbers (6, 7) apart, wherein an outer annular compression ring (4) is arranged on the outer rubber (6) both at the level of the closure (8) and at the level of the filling-side closure (9), and an annular second compression ring (5) is arranged opposite each other at the same level inside the inner rubber (7), wherein the annular compression rings (4, 5) seal the ends of the cylindrical rubbers (6,7) press airtight against the closures (8, 9), wherein a valve (10) for a filling line (1) is arranged in the filling side of the closure (9), the outlet of which ends between the two rubbers (6, 7), and wherein at least one receptacle (11) for an insertion aid (2) is arranged in the filling side of the closure (9). Device according to claim 1, characterized in that both ring-shaped closures (8, 9) have an approximately square cross-section. Device according to claim 1, characterized in that both ring-shaped closures (8, 9) have a rectangular cross-section. Device according to one of the preceding claims, characterized in that two receptacles (11) for an insertion aid (2) are arranged in the filling side closure (9), which are screwed into the filling side closure (9) and have a blind hole bore mutually, wherein the insertion aid (2) consists of an insertion tube (15) with a cross member (16) with two nozzles (14) each with an O-ring, wherein the nozzles (14) are arranged such that they can be pressed into the blind holes of the receptacles (11). Device according to one of the preceding claims, characterized in that the insertion aid (2) has two insertion tubes (15) with crossbeams (16) and nozzles (14) with O-ring, which are connected to each other via a sheet (17) for simultaneous insertion into the receptacles (11). Device according to one of the preceding claims, characterized in that the length of the annular space seal (3) corresponds approximately to the diameter of the bore.

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