KR101623320B1 - Separate waterproof sheet of tunnel structure - Google Patents

Separate waterproof sheet of tunnel structure Download PDF

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Publication number
KR101623320B1
KR101623320B1 KR1020150153163A KR20150153163A KR101623320B1 KR 101623320 B1 KR101623320 B1 KR 101623320B1 KR 1020150153163 A KR1020150153163 A KR 1020150153163A KR 20150153163 A KR20150153163 A KR 20150153163A KR 101623320 B1 KR101623320 B1 KR 101623320B1
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South Korea
Prior art keywords
waterproof sheet
shotcrete
tunnel
drainage
fixed
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KR1020150153163A
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Korean (ko)
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윤석철
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윤석철
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    • 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
    • E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C08L23/0853—Vinylacetate
    • 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
    • E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
    • E21D11/383—Waterproofing; Heat insulating; Soundproofing; Electric insulating by applying waterproof flexible sheets; Means for fixing the sheets to the tunnel or cavity wall
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D13/00—Large underground chambers; Methods or apparatus for making them

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Civil Engineering (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Lining And Supports For Tunnels (AREA)

Abstract

The present invention relates to a method of installing drainage of groundwater together with a drainage material installed between a shotcrete of a tunnel structure and a concrete lining and being installed in a drainage material for guiding drainage of drainage groundwater passing through a shotcrete from a ground plate, The waterproof sheet 10 is fixed on one side of the waterproof sheet 10 at regular intervals in the width direction and provided in a wing shape in the longitudinal direction so as to fix the waterproof sheet 10 to the shotcrete 102 And the waterproof sheet 10 are alternately joined to the fixed portion 18a and the non-bonded portion 18b with respect to the stationary vane 18 to form a tunnel 15. In addition to the construction of the tunnel structure, as well as a tunnel, a tunnels, When it is necessary to cut the waterproof sheet 10 in the bent portion of the section, the nonwoven portion 1 of the fixed blade 18 8b to cut the waterproof sheet 10 so that the waterproof sheet 10 can be used.

Description

Separable watertight sheet of tunnel structure {omit}

The present invention relates to a method of installing drainage of groundwater together with a drainage material installed between a shotcrete of a tunnel structure and a concrete lining to separate drainage materials for guiding drainage of groundwater leached through shotcrete from a ground plate, The present invention relates to a detachable waterproof sheet for preventing a waterproof sheet from being infiltrated by a lining. In particular, a plurality of waterproof sheets are provided on one surface of a waterproof sheet in a width direction at regular intervals in the longitudinal direction, The waterproof sheet is cut at the folded portion of the irregular tunnel section such as the cross tunnel, the shaft, the shelter, the entrance of the gangway, the emergency parking lot, etc., as well as the use in the tunnel section where the waterproof sheet is alternately joined to the waterproof sheet. When it is necessary to do so, The waterproof sheet can be cut and used to facilitate the cutting operation. When the waterproof sheet is folded and bonded, the non-bonded portion of the fixed wing is not interfered with the folded joint of the waterproof sheet, To a separable waterproof sheet of a tunnel structure.

Generally, between the shotcrete of the tunnel structure and the concrete lining, there is a waterproof sheet which induces drainage of the groundwater together with the drainage material of the nonwoven fabric type which induces the drainage of the eluted groundwater passing through the shotcrete from the ground paper and simultaneously prevents the groundwater from penetrating into the concrete lining Respectively.

For example, in the tunnel waterproofing construction, a tunnel is ground in the ground to stabilize the excavation surface of the tunnel, and then a shotcrete is placed on the uneven surface of the tunnel to make a tunnel first, then a drainage material and a waterproof sheet are installed on the surface of the shotcrete, The concrete lining is put into the tunnel, and the tunnel is secondly grounded. The drainage material distributes the groundwater eluted from the shotcrete to the lower part of the tunnel and discharges it. The waterproof sheet plays a role of guiding drainage to the lower part of the tunnel together with the drainage material, and waterproofing the concrete lining. Therefore, the groundwater eluted from the shotcrete flows downward through the waterproof sheet, passes through the porous filter concrete layer made of crushed stone gravel cement and the like, flows into the drain pipe connected to the ground, and the ground water introduced into the drain pipe drains And is discharged to the outside.

In the existing tunnel waterproofing method, there is a separation type method in which a drainage material in the form of nonwoven fabric is first applied to a shotcrete surface using a ladle, and a waterproof sheet is fused with hot air through the land, thereby waterproofing.

In this case, since the waterproof sheet is fused and attached through the ladder, the waterproof sheet is hardened due to deterioration damage, and the quality such as tensile strength and elongation is lowered. Thus, when the concrete lining is put, It may be broken and defects may occur.

In order to solve this problem, the present inventors have invented Korean Patent No. 10-1426465 entitled "Waterproof sheet for a tunnel having a lattice sheet and a tunnel waterproofing method using the same. In this paper, we propose a separable method in which a nonwoven fabric and a grating sheet constituting a drainage material are first applied to a shotcrete surface, and a waterproof sheet having a fixed wing is separated from the shotcrete surface by using a fixed blade.

In the above, the one side of the separable waterproof sheet is formed with a plurality of wings in the longitudinal direction at regular intervals in the width direction, and a fixed blade for fixing the waterproof sheet to the shotcrete is formed. Accordingly, the waterproof sheet is fixed to the shotcrete by a fixing means such as a nail through the fixed blade without using the ladle.

The fixing wings joined to the waterproof sheet are joined by a wire welding method. Thus, there is no problem in the construction in the tunnel section according to the wire welding method.

However, in the tunnel waterproofing work, there is a portion (hereinafter, referred to as a "bent portion") in the tunnel section such as a tunnel (a tunnel connecting the tunnel and the tunnel in the lateral direction), a slope, a shelter, In the case of waterproof construction of the waterproof sheet, it is necessary to cut and cut the waterproof sheet inevitably.

As described above, the waterproofing of the bent portion is performed by cutting the waterproof sheet to a required length, folding the cut waterproof sheet, and fusing the folded portion with hot air.

In this case, since the fixed wings joined to the waterproof sheet are joined by the wire fusion bonding method, the waterproof sheet is cut to a required length for waterproofing of the broken portions, and the fixed wings are cut together to have the same length. For fusing, it is necessary to remove about 30 cm of the fixed blade attached to the waterproof sheet in order to join the waterproof sheet by hand or knife operation.

When the fixed blade attached to the waterproof sheet is removed by the manual folding or knitting operation by the overlapping portion of the waterproof sheet as described above, the fixed blade bonded to the waterproof sheet at a plurality of places is made of the same material as the nonwoven fabric, There is a problem in that some of the fixed wing traces remain, which may cause defects in the fusing operation even though the removal work is delayed.

Therefore, there is still a need for a new type of waterproofing sheet for a tunnel which can be easily separated from the waterproofing sheet in a bent part of a tunnel structure. .

Korean Patent Publication No. 10-1426465

SUMMARY OF THE INVENTION It is an object of the present invention to provide a detachable waterproof sheet used in a separate form from a drainage material and having a plurality of wings spaced apart from each other at a predetermined interval in the width direction and fixed to a shotcrete The waterproof sheet is used at the folded part of the irregular tunnel section such as the cross tunnel, the shaft, the shelter, the entrance of the gates and the emergency parking lot of the tunnel structure as well as the used in the tunnel section which is alternately joined to the waterproof sheet. The waterproof sheet can be cut and used through the non-joined portion of the fixed blade to facilitate the cutting operation. When the waterproof sheet is folded and bonded, the non-joined portion of the fixed blade is folded The waterproof sheet of the tunnel structure which can stabilize the lamination and fusion .

A solution of the problem of the present invention is to provide drainage of groundwater, which is installed between the shotcrete of the tunnel structure and the concrete lining, to guide the drainage of the groundwater leaking from the ground sheet through the shotcrete, And a plurality of wing-shaped wings extending in a longitudinal direction at predetermined intervals on one side of the tunnel structure to prevent the groundwater from being infiltrated into the concrete lining, and the waterproof sheet is fixed to the shotcrete by a fixing means. In the separable waterproof sheet,

And the waterproof sheet is alternately joined to the joining portion and the non-joining portion with respect to the fixing wings provided on the waterproof sheet and joined to the waterproof sheet to cut through the non-joining portions of the fixing wings when the waterproof sheet is cut.

The fixed blade may be any one of a nonwoven fabric, a woven fabric, and a synthetic resin.

The length of the joint portion of the fixed blade provided on the waterproof sheet is 10 cm to 20 cm, and the length of the non-joint portion is 20 cm to 40 cm.

According to the separable waterproof sheet of the tunnel structure of the present invention, since the fixed vanes joined to the waterproof sheet alternate with the joint portion and the non-joint portion, the waterproof sheet is cut from the bent portion of the tunnel section, The waterproof sheet can be cut and used through the non-joined portion of the fixed blade to facilitate the cutting operation, thereby greatly improving the workability in the field and improving the workability.

In addition, the present invention has an effect that when the waterproof sheet is cut and folded and fused, the non-joined portion of the fixed blade does not interfere with the folded joining of the waterproof sheet, thereby stabilizing the overlapping fusion.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a tunnel structure to which a separable waterproof sheet of the present invention is applied.
2 is a partially cut-away sectional view showing the separated waterproof sheet of the present invention and the water discharger separated from each other.
3 is a partial cross-sectional view schematically illustrating the construction of the separable waterproof sheet of the present invention.
Fig. 4 is a structural explanatory view of a separable waterproof sheet according to the present invention, which is partially cut in a longitudinal direction and is illustrated in a planar state.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The terms and words used in the specification and claims should not be construed in a conventional and dictionary sense and should be construed in a meaning and a concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are preferred embodiments of the present invention and do not represent all the technical ideas of the present invention, and there are various equivalents and modifications thereof .

FIG. 1 schematically shows a tunnel structure to which the separable waterproof sheet 10 of the present invention is applied. The excavation surface of the tunnel is stabilized by excavating the foundation tunnel 100 in the ground, and shotcrete 102 is placed on the uneven surface of the tunnel. The tunnel is first laid down and then the drainage material 10A and the separable waterproof sheet 10 are installed on the surface of the shotcrete 102 and the concrete lining 104 is laid through the drainage material 10A and the tunnel is secondarily sandwiched. The groundwater leached from the shotcrete 102 flows downward through the drainage material 10A and the waterproof sheet 10 and passes through the porous filter concrete layer 106 made of crushed stone gravel cement or the like into the drainage pipe 108 connected thereto And the groundwater flowing into the water pipe 108 is drained to the water pipe 112 through the connection pipe 110 and discharged to the outside.

The separable waterproof sheet 10 of the present invention applied as described above is installed between the shotcrete 102 and the concrete lining 104 together with the drainage material 10A so that groundwater drained from the shotcrete 102 can be discharged through the drainage material 10A And the separable waterproof sheet 10 prevents the groundwater from penetrating into the concrete lining 104 and induces drainage of the groundwater into the tunnel bottom together with the drainage material 10A.

Fig. 2 is a partially cut-away sectional view showing the separated waterproof sheet 10 and the water discharger 10A of the present invention.

The drainage material 10A functions to absorb and disperse groundwater discharged from the shotcrete 102 while facing the shotcrete 102 surface.

The drainage material 10A may be a nonwoven fabric that absorbs and disperses groundwater and is easy to drain.

In the case of the nonwoven fabric provided as the drainage material 10A, long fibers or short fibers can be used in consideration of permeability and warmth.

The drainage material 10A disperses and induces deposition of sediments contained in the groundwater eluted from the shotcrete 102, as well as improves drainage performance of the groundwater, as disclosed in Korean Patent No. 10-1426465 invented by the present inventor, A nonwoven fabric and a lattice sheet may be integrally formed so as to secure a space for absorbing the expanded nonwoven fabric during volume expansion of the nonwoven fabric, or a nonwoven fabric may be provided in a sandwich form on both sides of the lattice sheet, ≪ / RTI >

The lattice sheet and the nonwoven fabric may be bonded together by any one of thermal bonding and adhesive bonding, and the nonwoven fabric, which is provided in sandwich form on both sides of the lattice sheet, may be bonded by any one of needle punching, thermal bonding and adhesive bonding, have.

A separate waterproof sheet 10 having a fixed blade 18 is provided on the bottom surface of the water discharge member 10A and a detachable waterproof sheet 10 is fixed to the fixed blade 18 by fastening means such as washer nails. To the shotcrete (102) to induce drainage of groundwater leached from the shotcrete (102) and to waterproof the concrete lining (104).

3 is a partial cross-sectional view schematically illustrating the construction of the separable waterproof sheet of the present invention. First, the water discharger 10A is fixed to the shotcrete 102 by fixing with the fixing means of the washer nail 30, The separable waterproof sheet 10 provided in a separated form is positioned and fixed by the fixing means of the washer nail 32 through the fixed blade 18 bonded to the waterproof sheet 10 to form the waterproof sheet 10 as a shotcrete 102). Accordingly, the drainage material 10A and the separable waterproof sheet 10 are applied to the shotcrete 102.

Fig. 4 is a structural explanatory view of a separable waterproof sheet according to the present invention, which is partially cut in a longitudinal direction and is illustrated in a planar state.

A plurality of watertight sheets 10 are provided on one surface of the separable watertight sheet 10 in the form of wings in a longitudinal direction at regular intervals in the width direction and the watertight sheet 10 is fixed to the shotcrete 102 by fastening means such as washer nails 32 The waterproof sheet 18 is fixed to the waterproof sheet 10 while alternately joining the waterproof sheet 18 to the jointed portion 18a and the non-joined portion 18b with respect to the fixed blade 18 provided on the waterproof sheet 10, (L) through the non-joined portion (18b) of the fixed blade (18) at the time of cutting.

The fixed blade 18 may be formed of any one of a nonwoven fabric, a woven fabric, and a synthetic resin, which is formed by cutting a sheet-shaped material.

It is preferable that the joining length of the joining portion 18a of the fixed blade 18 provided on the waterproof sheet 10 is 10 cm to 20 cm so that the rigidity of the fixed blade 18 is maintained so that the joining is maintained in the waterproof sheet 10 The length of the non-joined portion 18b of the waterproof sheet 10 is 20 cm to 40 cm so that the waterproof sheet 10 is cut (L) so that the non-joined portion 18b of the fixed blade 18, It is preferable to prevent interference with the folded joint.

2 and 4, the fixed blade 18 is joined to the waterproof sheet 10 in the longitudinal direction of the waterproof sheet 10 through the joint portion 18a. The joint portion 18a of the fixed blade 18 is connected to the wire One side is joined by a fusing method to form a wing, and the washer nail 32 can be pressed through the wing, and the bonding portion 18a can be bonded by thermal bonding or an adhesive.

The fixed vanes 18 are arranged at regular intervals in the width direction of the waterproof sheet 10 and are joined in the direction of the length of the waterproof sheet 10. For example, when the waterproof sheet 10 has a width of 2.1 m (meters), the fixed wings 18 are installed with 30 cm to 50 cm on both sides of the width of the waterproof sheet 10, And three watertight sheets 10 can be formed. When the watertight sheet 10 has a width of 3 m (meters), four watertight sheets 10 can be formed.

The length of the waterproof sheet 10 may be various lengths of 23 m, 25 m and 28 m depending on the size of the tunnel structure.

The waterproof sheet 10 is preferably made of synthetic resin such as ethylene vinyl acetate (EVA) based on the quality standard of KSF 4911 (synthetic high polymer waterproof sheet), and has a thickness of 0.8 mm to 1.5 mm .

2 and 4, the separated waterproof sheet 10 of the present invention configured as described above is separated from the water discharging material 10A and the water discharging material 10A is first applied to the shotcrete 102, 10), so that the workability can be improved by reducing the weight by half.

The fixed vanes 18 formed on the separable waterproof sheet 10 alternate between the joint portions 18a and the non-joint portions 18b, so that not only the construction of the regular tunnel structure as shown in FIG. 1, but also the crossing, When the separable waterproof sheet 10 needs to be cut at the bent portion of the non-standardized tunnel section such as a shelter, a gangway entrance, an emergency parking lot, etc., the non-joint portion 10b of the stationary vane 18, (L) of the waterproof sheet (10) so that the waterproof sheet (10) can be cut and used to facilitate the cutting operation and to secure a working space of the fused welder when the waterproof sheet (10) The waterproof sheet 18 is cut by about 30 cm so as not to interfere with the folding of the waterproof sheet 10, thereby stabilizing the overlapping fusion.

10: Detachable waterproof sheet
10A: Water supply
18: Fixed blade
18a:
18b: non-
L: Cut (cutting line)
100: foundation tunnel
102: Shotcrete
104: Concrete lining
106: Filter concrete layer
108: Water pipe
110: connector
112: house water pipe

Claims (3)

The drainage material (10A) is installed separately from the shotcrete (102) of the tunnel structure and the concrete lining (104) so as to be separated into a drainage material (10A) for guiding the drainage of groundwater passing through the shotcrete (102) And the waterproof sheet 10 is fixed to the concrete lining 104 at a predetermined distance in the width direction and in the form of a wing in the longitudinal direction so as to prevent the groundwater from penetrating into the concrete lining 104, And a fixed blade (18) for fixing the shotcrete (102) to the waterproof sheet
The fixing wings 18 are alternately joined to the waterproof sheet 10 with the joining portions 18a and the non-joining portions 18b with respect to the fixed wings 18 provided on the waterproof sheet 10, (L) through the non-joined portion (18b) of the waterproof sheet (20).
The method according to claim 1,
Wherein the fixed vane (18) is any one of a nonwoven fabric, a woven fabric, and a synthetic resin.
The method according to claim 1,
Wherein the length of the joint part (18a) of the fixed blade (18) provided on the waterproof sheet (10) is 10 cm to 20 cm and the length of the non-joint part (18b) is 20 cm to 40 cm.
KR1020150153163A 2015-11-02 2015-11-02 Separate waterproof sheet of tunnel structure KR101623320B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101802713B1 (en) * 2017-06-22 2017-11-28 김용규 Antidew sheet

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002195000A (en) * 1993-02-17 2002-07-10 C I Kasei Co Ltd Waterproof sheet and its stretching method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002195000A (en) * 1993-02-17 2002-07-10 C I Kasei Co Ltd Waterproof sheet and its stretching method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101802713B1 (en) * 2017-06-22 2017-11-28 김용규 Antidew sheet

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