EP2199542A1 - Rohrförmige Vorrichtung zur Tunnelverstärkung aus nichtverschmutzendem Material - Google Patents

Rohrförmige Vorrichtung zur Tunnelverstärkung aus nichtverschmutzendem Material Download PDF

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Publication number
EP2199542A1
EP2199542A1 EP09425508A EP09425508A EP2199542A1 EP 2199542 A1 EP2199542 A1 EP 2199542A1 EP 09425508 A EP09425508 A EP 09425508A EP 09425508 A EP09425508 A EP 09425508A EP 2199542 A1 EP2199542 A1 EP 2199542A1
Authority
EP
European Patent Office
Prior art keywords
tubular
tubular device
hole
longitudinal channel
section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09425508A
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English (en)
French (fr)
Inventor
Giona Maddaluno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Giamundo Aniello Anna
Original Assignee
Giamundo Aniello Anna
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Giamundo Aniello Anna filed Critical Giamundo Aniello Anna
Publication of EP2199542A1 publication Critical patent/EP2199542A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00—Setting anchoring-bolts
    • E21D20/02—Setting anchoring-bolts with provisions for grouting
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • E21D21/0033—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts having a jacket or outer tube

Definitions

  • the present invention regards a device and a related process for the reinforcement of the excavation face of a tunnel.
  • one of the by now consolidated techniques consists of pre-reinforcing the face. In substance, holes are made, a fiberglass-reinforced plastic reinforcement element is inserted, and grout is injected.
  • the injection techniques always provide for the aid of polyvinylchloride (PVC) tubes or polyethylene (PE) tubes, or tubes made of other thermoplastic materials.
  • PVC polyvinylchloride
  • PE polyethylene
  • the material constituted by the debris obtained during the excavation of the already reinforced excavation face i.e. the so-called "spoil" therefore contains materials that are currently considered polluting, since they are of instable chemical nature. Therefore, the trend of related laws on the matter is to prohibit the use of the spoil (containing the thermoplastic materials of the injection tubes) for all the construction work, even in the execution of the road embankments. It follows that the spoil must be deposited in suitable dumps for polluting material, which involves very high costs. Therefore, one object of the present invention is that of providing a device and a process for reinforcing the excavation face in a tunnel which does not provide for the use of polluting material, such as thermoplastic material (e.g. PVC or PE), obtaining a reinforcement that is identical or even of improved quality with respect to the preceding art.
  • polluting material such as thermoplastic material (e.g. PVC or PE)
  • the objects of the invention are obtained by means of a tubular device made of stable, non-polluting material, preferably fiberglass-reinforced plastic, to be used in the reinforcement techniques of the excavation face in a tunnel, whose characteristics are specified in claim 1.
  • the dependent device claims regard several specific and/or particularly advantageous embodiments.
  • the objects of the present invention are obtained by means of a process of reinforcement of the excavation face in a tunnel having the characteristics contained in claim 10.
  • a tubular device is provided that is (nearly) entirely made of fiberglass-reinforced plastic, which preferably has two longitudinal channels inside the device, i.e. incorporated inside the same.
  • the first channel has a hole mouth side opening
  • the second has a hole bottom side opening.
  • the internal channels do not communicate with each other, and at their opposite ends lead towards the outside (at the mouth of the reinforcement hole in the mounting position of the tubular device of the invention).
  • the grout or the like
  • the grout exits from the second internal longitudinal channel or from the first internal longitudinal channel (process claim 10).
  • the tubular device of the present invention can remain inside the hole as a reinforcement of the hardened cement mixture. It does not comprise unstable polluting materials and is therefore acceptable by current laws. In addition, it also allows verifying that the hole is completely filled with grout.
  • the tubular device has a first tubular section in double-tube form (two coaxial tubes) which defines an "external jacket” and an "internal tube”.
  • the external jacket will act as the first internal longitudinal channel, while the internal tube will act as the second internal longitudinal channel.
  • This embodiment type (currently considered the preferred embodiment), illustrated in the following detailed part of the description, offers particular advantages in terms of simplification of the production process of the tubular device of the present invention.
  • fiberglass-reinforced plastic will be frequently used. Nevertheless, since the invention could be applied by using another equally stable and non-polluting material, with mechanical/physical properties similar to those of fiberglass-reinforced plastic, below (except in the claims) the term fiberglass-reinforced plastic signifies a stable, non-polluting chemical material which could be employed, due to its mechanical qualities similar to fiberglass-reinforced plastic (lightness, strength etc.), in place of actual fiberglass-reinforced plastic.
  • the device comprises:
  • the component 9 constitutes the already-known hole 8 mouth caulking made with quick-setting mortars or possibly constituted by a cap made of expanded molded PE.
  • the component 9 ensures the watertight seal with the wall of the mouth of the hole 8 (as in the prior art) and with the cylindrical external wall of the end (hole mouth side) of the first tubular fiberglass-reinforced plastic section 1a.
  • the component 9 can therefore be considered as not making up part of the tubular device of the present invention.
  • the volume occupied by the components 3, 7 that are not made of fiberglass-reinforced plastic is in reality negligible with respect to the overall volume involved (the tubular device of the invention could even reach 18-20 meters length). Therefore, for practical purposes the device of the invention can be considered as being entirely composed of fiberglass-reinforced plastic.
  • first tubular fiberglass-reinforced plastic section 1a extends from the screwing zone in the metal sleeve 3 up to (and beyond) the mouth of the hole 8, while the second tubular fiberglass-reinforced plastic section 1b extends from its screwing zone in the other side of the sleeve 3 up to the cap 7.
  • the first tubular fiberglass-reinforced plastic section 1a is actually formed by two coaxial fiberglass-reinforced plastic tubes 10, 10' (see cross section of Fig. 3 ), connected with each other so as to form a single piece, as indicated.
  • the internal tube 10 extends a certain distance beyond the edge (distal end) of the external tube 10' whose end (as said) is threaded.
  • the internal tube 10 is smooth. From the production standpoint of the first tubular section 1a, this could obtained by means of molding of a whole fiberglass-reinforced plastic tube having the structure indicated in Fig. 3 , and by means of turning one end of the same until the internal projecting tube 10 appears completely smooth.
  • the second tubular fiberglass-reinforced plastic section 1b is instead constituted by a simple tube 12 made of fiberglass-reinforced plastic, i.e. without internal tube, but with one end provided with the aforesaid male thread 5b.
  • the grout or the like whose reinforcement will be constituted at the conclusion of the work by the tubular device of the invention, is pressure-inserted into the related hole 8 made in the face of the tunnel through the so-called "jacket" of the tubular device, i.e. between the two tubes 10, 10'.
  • the grout inevitably diverges and exits from the transverse holes 6.
  • the arrows which show the path of the grout in a very simplified but effective manner
  • the device of the present invention will simultaneously act as a means for carrying out the injection of the grout or the like in the hole 8, as a means for verifying the complete filling of the hole 8 with the grout and as a means of fiberglass-reinforced plastic reinforcement (such material being stable and ecologically acceptable).
  • the grout is injected directly into the internal tube 10 (rather than between the tubes 10, 10'), before exiting from the transverse holes 11 of the second tubular section.
  • the grout descends by gravity towards the bottom of the hole 8 but then, once this bottom is filled, it rises towards the mouth of the hole 8 according to the path indicated by the arrows. It then enters into the "jacket" of the tubular device of the invention, i.e. into the air space between the two tubes 10, 10' of the first tubular section 1a, after having entered into the sleeve 3 through its transverse holes 6 (see Fig. 2b in particular).
  • case a would not be applicable if the hole 8 is tilted downward, and the technique described in case b could not be employed if the hole is tilted upward.
  • employing the method b) for a hole 8 directed upward one would probably not be able to fill the entire bottom of the hole 8 (hole bottom side, or distal side) with grout.
  • employing the method a) for a hole tilted downward it would probably not be possible to fill the entire side of the hole next to the component 9 (hole mouth side, or proximal side) with grout.
  • the originality and specificity of the present invention lies in the fact that the "double-tube" reinforcement - as represented in the section of Fig. 3 - does not comprise thermoplastic materials, and in addition to acting as reinforcement it also allows verifying, due to the double passage, the completed filling of the hole 8 with the hardenable fluid filling material (grout or the like).
  • the present invention is not limited to a round external section of the tubular device.
  • the latter could have a square or generally polygonal shape, even if the round section is preferable.
  • vents could be present, closer together in longitudinal direction (i.e. not only distributed on a plane transverse to the tubular device as in the preceding detailed description), hole bottom side and/or hole mouth side, respectively.
  • the present invention is therefore not limited to the exact configuration of the tubular device shown in the drawings and corresponding to the preferred embodiment of the invention. Indeed, it is extended to all those configurations which can be deemed easily inferable from the present concrete embodiment for an average man skilled in the art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Earth Drilling (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
EP09425508A 2008-12-19 2009-12-14 Rohrförmige Vorrichtung zur Tunnelverstärkung aus nichtverschmutzendem Material Withdrawn EP2199542A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITRM2008A000682A IT1392355B1 (it) 2008-12-19 2008-12-19 Dispositivo tubolare in materiale stabile non inquinante, preferibilmente vetroresina, da utilizzare nelle tecniche di consolidamento del fronte di scavo in galleria.

Publications (1)

Publication Number Publication Date
EP2199542A1 true EP2199542A1 (de) 2010-06-23

Family

ID=41128206

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09425508A Withdrawn EP2199542A1 (de) 2008-12-19 2009-12-14 Rohrförmige Vorrichtung zur Tunnelverstärkung aus nichtverschmutzendem Material

Country Status (2)

Country Link
EP (1) EP2199542A1 (de)
IT (1) IT1392355B1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29900432U1 (de) * 1999-01-13 1999-04-22 Schran Bergbau Baumaschinen Bo Gebirgsankersystem
US20020034424A1 (en) * 2000-04-10 2002-03-21 Wolfgang Ludwig Tubular anchor
EP1939394A2 (de) * 2006-12-19 2008-07-02 Minova International Limited Anker mit verfugter Hülle
EP2065559A2 (de) * 2007-11-30 2009-06-03 HILTI Aktiengesellschaft Selbstbohrender Verbundanker

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29900432U1 (de) * 1999-01-13 1999-04-22 Schran Bergbau Baumaschinen Bo Gebirgsankersystem
US20020034424A1 (en) * 2000-04-10 2002-03-21 Wolfgang Ludwig Tubular anchor
EP1939394A2 (de) * 2006-12-19 2008-07-02 Minova International Limited Anker mit verfugter Hülle
EP2065559A2 (de) * 2007-11-30 2009-06-03 HILTI Aktiengesellschaft Selbstbohrender Verbundanker

Also Published As

Publication number Publication date
IT1392355B1 (it) 2012-02-28
ITRM20080682A1 (it) 2010-06-20

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