WO1988003598A1 - Tunnel or sewer lining system - Google Patents

Tunnel or sewer lining system Download PDF

Info

Publication number
WO1988003598A1
WO1988003598A1 PCT/AU1987/000385 AU8700385W WO8803598A1 WO 1988003598 A1 WO1988003598 A1 WO 1988003598A1 AU 8700385 W AU8700385 W AU 8700385W WO 8803598 A1 WO8803598 A1 WO 8803598A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
strips
layer strips
grout
wall
Prior art date
Application number
PCT/AU1987/000385
Other languages
French (fr)
Inventor
Peter Allen
Sydney Molyneux
Original Assignee
Danby Pty. Ltd
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 Danby Pty. Ltd filed Critical Danby Pty. Ltd
Publication of WO1988003598A1 publication Critical patent/WO1988003598A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • F16L58/04—Coatings characterised by the materials used
    • F16L58/10—Coatings characterised by the materials used by rubber or plastics
    • F16L58/1009—Coatings characterised by the materials used by rubber or plastics the coating being placed inside the pipe
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F3/00—Sewer pipe-line systems
    • E03F3/06—Methods of, or installations for, laying sewer pipes
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04—Lining with building materials
    • E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • F16L58/04—Coatings characterised by the materials used
    • F16L58/06—Coatings characterised by the materials used by cement, concrete, or the like
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F3/00—Sewer pipe-line systems
    • E03F3/06—Methods of, or installations for, laying sewer pipes
    • E03F2003/065—Refurbishing of sewer pipes, e.g. by coating, lining

Definitions

  • THIS INVENTION relates to a tunnel or sewer lining system and is particularly suitable for lining non-circular man-entry tunnels or sewers.
  • Preferred objects of the present invention are to provide a method of lining tunnels or sewers which has great flexibility and which preferably has the advantages that no expensive excavation is required; irregular shapes and features can be lined; very little cross-sectional area is lost; installation is rapid; and/or there is no "blind" grouting. It is also a preferred object to provide a system of interlocking strips which are used with the grout or mortar to form a sandwich-like liner.
  • the present invention resides in a method for lining tunnels or sewers including: fixing a plurality of first layer strips, in side-by-side relationship, to the wall of the tunnel or sewer to be lined; applying grout to the first layer strip to a pre-selected thickness; and fixing a plurality of second layer strips to the first layer strips with the grout sandwiched there- between.
  • the first layer strips are extruded from rigid unplasticised sewer grade P-V.C.
  • the strips have a plurality of spaced female locking profiles which project from a perforated backing layer.
  • there are perforations in the backing layer which allows the grout to adhere to the existing wall and key-in the plastic layer.
  • the grout e.g. a mortar/cement mix, which may have a bonding additive , is sprayed on to the first layer.
  • the second layer strips are of the same plastic material as the first layer strips.
  • the second layer strips are much thicker than the first, to provide a smooth liner surface, with male locking profiles to engage the corresponding female locking profiles on the first layer strips.
  • first and second layer strips are laid in an overlapping relationship.
  • the present invention resides in apparatus to line a tunnel or sewer including: a plurality of first layer strips to be fixed in a side-by-side relationship to the wall to be lined; grout applied to the first layer to a pre ⁇ selected thickness - and a plurality of second layer strips fixed to the first layer strips to grout the sandwich between the two layers.
  • the preferred features of the apparatus are as hereinbefore described with reference to the method. BRIEF DESCRIPTION OF THE DRAWINGS To enable the invention to be fully understood, a preferred embodiment will now be described with reference to the accompanying drawings, in which: FIGS. 1, 2 and 3 show the three stages of installation of the liner, respectively;
  • FIGS. 1A, 2A and 3A are cross-sectional views of the wall corresponding to the three stages of FIGS. 1, 2 and 3 respectively;
  • FIGS. 4 and 5 are perspective views respect ⁇ ively of the first and second layer strips .
  • the wall 10 of the tunnel or sewer 11 to be lined is cleaned and any large holes or irregularities are filled with grout.
  • the first layer of plastic 12 is formed from a plurality of first layer strips 13 fixed side-by-side to the wall 10. Referring to FIGS. 1A, 4 and 4A, the first layer strips 13, formed of rigid .sewer grade uPVC, have a backing layer 14 with four elongate female locking profiles 15 (the central two being closely spaced) with teeth 16.
  • the strip 13, which is formed by extrusions, has holes 17 formed in the backing layer 14 which enable the grout to adhere to the wall 10.
  • the strips 13 are fixed to the wall 10 in a side-by-side relationship using masonry fasteners (not shown) applied by pneumatic fastening guns.
  • Masking tape 18 is laid over the female locking profiles 15 on the strips 13.
  • the mortar passes through the holes 17 to adhere to the wall 10 and so keep the strips 13 to the wall.
  • the fresh mortar surface 19 is cut back level with the profile height before the mortar 19 has reached its final set.
  • the protective masking tape 18 is removed.
  • a bead of uPVC adhesive is applied along the female locking profiles 15 and the second layer 20 is formed by locking the second layer strips 21 into engagement with the first layer strips 13 (see FIGS. 3 and 3A) .
  • the second layer strips 21 have a backing layer 2-2 with spaced male locking profiles 23 complementary to the female locking profiles 15 on the first layer strips 13.
  • the second layer strips 21 are also extruded from sewer grade rigid uPVC and are of greater thickness than the first layer strips 13.
  • the second layer 2Q forms a smooth wall surface for the lined sewer or tunnel 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Health & Medical Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Lining And Supports For Tunnels (AREA)

Abstract

A method for relining non-circular man-entry tunnels or sewers (10) where perforated first layer strips (13) of rigid PVC are fixed to the walls with fasteners in side-by-side relationship. Grout (19) is sprayed over the first layer strips (13) and passes through the holes (17) to adhere to the wall. Second layer strips (21) are fixed to the first layer strips (13) by complementary male and female locking profiles (23, 15) and the backing layer (22) of the second layer strips (21) form a smooth, continuous liner.

Description

Title: "TUNNEL OR SEWER LINING SYSTEM" BACKGROUND OF THE INVENTION
(1) Field of the Invention
THIS INVENTION relates to a tunnel or sewer lining system and is particularly suitable for lining non-circular man-entry tunnels or sewers.
(2) Prior Art
The aggressive environment found in sewers leads to deterioration in the sewer walls . To reinstate efficient flows, it is necessary to periodically reline the sewers .
SUMMARY OF THE INVENTION
Preferred objects of the present invention are to provide a method of lining tunnels or sewers which has great flexibility and which preferably has the advantages that no expensive excavation is required; irregular shapes and features can be lined; very little cross-sectional area is lost; installation is rapid; and/or there is no "blind" grouting. It is also a preferred object to provide a system of interlocking strips which are used with the grout or mortar to form a sandwich-like liner.
Other preferred objects of the present invention will become apparent from the following description.
In one aspect the present invention resides in a method for lining tunnels or sewers including: fixing a plurality of first layer strips, in side-by-side relationship, to the wall of the tunnel or sewer to be lined; applying grout to the first layer strip to a pre-selected thickness; and fixing a plurality of second layer strips to the first layer strips with the grout sandwiched there- between. Preferably the first layer strips are extruded from rigid unplasticised sewer grade P-V.C. Preferably the strips have a plurality of spaced female locking profiles which project from a perforated backing layer. Preferably there are perforations in the backing layer which allows the grout to adhere to the existing wall and key-in the plastic layer.
Preferably the grout, e.g. a mortar/cement mix, which may have a bonding additive , is sprayed on to the first layer.
Preferably the second layer strips are of the same plastic material as the first layer strips. Preferably the second layer strips are much thicker than the first, to provide a smooth liner surface, with male locking profiles to engage the corresponding female locking profiles on the first layer strips. "
Preferably the first and second layer strips are laid in an overlapping relationship.
In a second aspect the present invention resides in apparatus to line a tunnel or sewer including: a plurality of first layer strips to be fixed in a side-by-side relationship to the wall to be lined; grout applied to the first layer to a pre¬ selected thickness - and a plurality of second layer strips fixed to the first layer strips to grout the sandwich between the two layers. The preferred features of the apparatus are as hereinbefore described with reference to the method. BRIEF DESCRIPTION OF THE DRAWINGS To enable the invention to be fully understood, a preferred embodiment will now be described with reference to the accompanying drawings, in which: FIGS. 1, 2 and 3 show the three stages of installation of the liner, respectively;
FIGS. 1A, 2A and 3A are cross-sectional views of the wall corresponding to the three stages of FIGS. 1, 2 and 3 respectively; and
FIGS. 4 and 5 are perspective views respect¬ ively of the first and second layer strips .
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The wall 10 of the tunnel or sewer 11 to be lined is cleaned and any large holes or irregularities are filled with grout. The first layer of plastic 12 is formed from a plurality of first layer strips 13 fixed side-by-side to the wall 10. Referring to FIGS. 1A, 4 and 4A, the first layer strips 13, formed of rigid .sewer grade uPVC, have a backing layer 14 with four elongate female locking profiles 15 (the central two being closely spaced) with teeth 16. The strip 13, which is formed by extrusions, has holes 17 formed in the backing layer 14 which enable the grout to adhere to the wall 10.
As shown in FIGS. 1 and 1A, the strips 13 are fixed to the wall 10 in a side-by-side relationship using masonry fasteners (not shown) applied by pneumatic fastening guns.
Masking tape 18 is laid over the female locking profiles 15 on the strips 13.
A 2:1 sand and cement mix, incorporating bond improving additives to improve the mortar's characteris- tics, is pneumatically applied over the first layer 12 to an even thickness between the female profile sections - see FIGS. 2 and 2A . As shown the mortar passes through the holes 17 to adhere to the wall 10 and so keep the strips 13 to the wall. The fresh mortar surface 19 is cut back level with the profile height before the mortar 19 has reached its final set. The protective masking tape 18 is removed.
After the mortar has set, a bead of uPVC adhesive is applied along the female locking profiles 15 and the second layer 20 is formed by locking the second layer strips 21 into engagement with the first layer strips 13 (see FIGS. 3 and 3A) . As shown in FIG. 5, the second layer strips 21 have a backing layer 2-2 with spaced male locking profiles 23 complementary to the female locking profiles 15 on the first layer strips 13. The second layer strips 21 are also extruded from sewer grade rigid uPVC and are of greater thickness than the first layer strips 13.
Referring to FIG. 3A, it will be noted that the second layer strips 21 overlap the first layer strips 13.
The second layer 2Q forms a smooth wall surface for the lined sewer or tunnel 11.
It will be readily apparent to the skilled addressee that the present invention has the advantages hereinbefore described.
The embodiments described are by way of illus¬ trative examples only and various changes and modifica¬ tions may be made thereto without departing from the scope of the present invention defined in the appended claims .'

Claims

1. A method for lining tunnels or sewers including: fixing a plurality of first layer strips, in side-by-side relationship, to the wall of the tunnel or sewer to be lined; applying grout to the first layer strip to a pre-selected thickness; and fixing a plurality of second layer strips to the first layer strips with the grout sandwiched there¬ between.
2. A method according to Claim 1 wherein: the first layer strips have a plurality of spaced female locking profiles which project inwardly from a perforated backing layer, the perforations in the backing layer enabling the grout to adhere to the wall being lined.
3. A method according to.- Claim 2 wherein: the second layer strips are of greater thick¬ ness than the first layer strips and have male locking profiles projecting outwardly from a backing layer to engage the female locking profiles, the backing layer providing a smooth liner surface.
4. A method according to Claim 3 wherein: the first and second layer strips are laid in an overlapping relationship.
5. A method according to any one of Claims 1 to 4 wherein: the grout is sprayed over the first layer strip and passes through perforations in the first layer strip to adhere to the wall being lined.
6. Apparatus to line a tunnel or sewer including: a plurality of first layer strips to be fixed in a side-by-side relationship to the wall to be lined;
. grout applied to the first layer to a pre¬ selected thickness; and a plurality of second layer strips fixed to the first layer strips to grout the sandwich between the two layers .
7. Apparatus according to Claim 6 wherein: the first layer strips have a plurality of spaced female locking profiles which project inwardly from a perforated backing layer, the perforations in the backing layer enabling the grout to adhere to the wall being lined.
8. Apparatus according to Claim 7 wherein: the second layer strips are of greater thick¬ ness than the first layer strips and have male locking profiles projecting outwardly from a backing layer to engage the female locking profiles , the backing layer providing a smooth liner surface.
9. Apparatus according to Claim 8 wherein: the first and second layer strips are laid in an overlapping relationship.
PCT/AU1987/000385 1986-11-14 1987-11-16 Tunnel or sewer lining system WO1988003598A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPH8966 1986-11-14
AU896686 1986-11-14

Publications (1)

Publication Number Publication Date
WO1988003598A1 true WO1988003598A1 (en) 1988-05-19

Family

ID=3699685

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1987/000385 WO1988003598A1 (en) 1986-11-14 1987-11-16 Tunnel or sewer lining system

Country Status (1)

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WO (1) WO1988003598A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0475769A1 (en) * 1990-09-13 1992-03-18 Danby Pty Ltd Method of renovating and/or protecting sewers or pipes
WO1993021399A1 (en) * 1992-04-21 1993-10-28 Hüls Troisdorf Aktiengesellschaft System and process for relining channel pipe sections
US6793441B2 (en) * 2000-06-12 2004-09-21 W. R. Grace & Co.-Conn. Tunnel waterproofing method
CN110469347A (en) * 2019-09-03 2019-11-19 重庆城建控股(集团)有限责任公司 The double slurries grouting methods of rich water tunnel
US11124438B2 (en) 2020-01-20 2021-09-21 Chio Kang Medical, Inc. Alcaligenes faecalis for degrading ethylene oxide

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB697427A (en) * 1950-09-13 1953-09-23 Ind De L Aluminium Sa Improvements relating to shuttering for casting concrete pipes or tunnels
AU1668670A (en) * 1970-01-22 1972-01-06 Commercial Shearing & Stamping Company Interlocking boltless lining and support structure for underground openings

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB697427A (en) * 1950-09-13 1953-09-23 Ind De L Aluminium Sa Improvements relating to shuttering for casting concrete pipes or tunnels
AU1668670A (en) * 1970-01-22 1972-01-06 Commercial Shearing & Stamping Company Interlocking boltless lining and support structure for underground openings
AU1893570A (en) * 1970-03-25 1972-02-24 Commercial Shearing Stamping Company Interlocking boltless lining and support structure for underground openings

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0475769A1 (en) * 1990-09-13 1992-03-18 Danby Pty Ltd Method of renovating and/or protecting sewers or pipes
WO1993021399A1 (en) * 1992-04-21 1993-10-28 Hüls Troisdorf Aktiengesellschaft System and process for relining channel pipe sections
WO1993021398A1 (en) * 1992-04-21 1993-10-28 Hüls Troisdorf Aktiengesellschaft System and process for relining channel pipe sections with inspection facilities
AU670795B2 (en) * 1992-04-21 1996-08-01 Ht Troplast Ag System and process for relining channel pipe sections with inspection facilities
US5725328A (en) * 1992-04-21 1998-03-10 Ht Troplast Ag System and process for relining sewerage pipe sections
US6793441B2 (en) * 2000-06-12 2004-09-21 W. R. Grace & Co.-Conn. Tunnel waterproofing method
CN110469347A (en) * 2019-09-03 2019-11-19 重庆城建控股(集团)有限责任公司 The double slurries grouting methods of rich water tunnel
US11124438B2 (en) 2020-01-20 2021-09-21 Chio Kang Medical, Inc. Alcaligenes faecalis for degrading ethylene oxide

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