KR20170104678A - Draining guidance sheet with non-woven fabrics hole and tunnel waterproofing method using the same - Google Patents

Draining guidance sheet with non-woven fabrics hole and tunnel waterproofing method using the same Download PDF

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Publication number
KR20170104678A
KR20170104678A KR1020160026829A KR20160026829A KR20170104678A KR 20170104678 A KR20170104678 A KR 20170104678A KR 1020160026829 A KR1020160026829 A KR 1020160026829A KR 20160026829 A KR20160026829 A KR 20160026829A KR 20170104678 A KR20170104678 A KR 20170104678A
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KR
South Korea
Prior art keywords
nonwoven fabric
sheet
shotcrete
tunnel
foreign matter
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Application number
KR1020160026829A
Other languages
Korean (ko)
Inventor
최일윤
이준석
임지훈
윤석철
Original Assignee
한국철도기술연구원
이정테크(주)
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Priority to KR1020160026829A priority Critical patent/KR20170104678A/en
Publication of KR20170104678A publication Critical patent/KR20170104678A/en

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F16/00—Drainage
    • E21F16/02—Drainage of tunnels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
    • E02D31/025—Draining membranes, sheets or fabric specially adapted therefor, e.g. with dimples
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2450/00—Gaskets
    • E02D2450/10—Membranes
    • E02D2450/101—Membranes permeable
    • E02D2450/102—Membranes permeable for liquids

Abstract

The present invention relates to a draining guidance sheet which guides underground water flowing out of shotcrete to be drained to a lower portion of a tunnel by installing a structure laminated with a first non-woven fabric between shotcrete and concrete lining, a lattice sheet, a second non-woven fabrics, and a waterproof sheet, and a tunnel waterproofing method using the same. The draining guidance sheet comprises: a first non-woven fabrics disposed in an inner side surface of shotcrete of the tunnel and formed with a plurality of first non-woven fabrics holes distributed in a longitudinal direction and a transverse direction, or are successively formed in the longitudinal direction; a lattice sheet which is a mesh network having a lattice pattern, and disposed in an inner side surface of the first non-woven fabrics; a second non-woven fabrics disposed in an inner side of the lattice sheet; and a waterproof sheet disposed in an inner side surface of the second non-woven fabrics. When underground water including foreign substances flowing out from the shotcrete in a portion where the first non-woven fabric holes are formed is in direct contact with the second non-woven fabrics, foreign substances are distributed and filtered by the second non-woven fabrics.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a drainage induction sheet having a non-woven fabric,

The present invention relates to a drainage induction sheet in which a nonwoven fabric hole is formed and a tunnel waterproofing method using the same. More specifically, the present invention provides a drainage induction sheet in which a first nonwoven fabric, a lattice sheet, a second nonwoven fabric and a waterproof sheet are provided, The present invention relates to a drainage induction sheet in which a nonwoven fabric hole capable of more effectively filtering and extending a life expectancy of a drainage induction sheet and a tunnel waterproofing method using the same.

In general tunnel waterproofing construction, the foundation tunnel is excavated in the ground to stabilize the excavation surface of the tunnel, then the shotcrete is put on the uneven surface of the tunnel to make the tunnel first, then the waterproof sheet is installed on the shotcrete surface, And the tunnel is secondarily laid.

The waterproof sheet serves to guide groundwater eluted from the shotcrete to the lower part of the tunnel and simultaneously to protect the concrete lining. Therefore, the groundwater eluted from the shotcrete flows downward through the waterproof sheet and flows into the drainage pipe connected to the porous filter concrete layer made of crushed stone, gravel, cement, etc., and the groundwater introduced into the drainage pipe So that it is discharged to the outside.

A prior art related to the above is shown in Fig.

FIG. 1 is a view showing a tunnel provided with a drainage induction sheet 50 according to a related art. As shown in FIG. 1, a shotcrete 52 and a concrete lining 54 are formed in an excavation tunnel.

At this time, a drainage induction sheet 50 is installed between the shotcrete surface and the concrete lining 54 and fixed to the shotcrete 52.

The drainage-inducing sheet functions to waterproof the tunnel and to induce drainage of the groundwater infiltrated through the shotcrete (52).

Groundwater or the like flowing through the drainage induction sheet 50 flows into the porous longitudinal drain pipe 62,

The inflowed groundwater flows to the collector 60 through a transverse drainage pipe 66 connected to the longitudinal drainage pipe 62 and drained to the outside.

However, as the life of the drainage induction sheet applied to the related art increases, the maintenance cost of the filter concrete layer and the drain pipe 62 surrounding the drain pipe 62 is increased.

In addition, since the drainage induction sheet 50 is installed in the shotcrete 52 and the concrete lining 54 is installed, if the drainage induction sheet is defective, the required cost, operation time, and the like necessary for replacing the drainage induction sheet with another drainage induction sheet There was an increasing problem.

More specifically, when the drainage-inducing sheet is clogged with foreign matter (such as shotcrete caused by shotcrete) contained in the ground water, particularly in the case of icing inside the tunnel, it can cause serious problems.

That is, when the groundwater eluted from the shotcrete flows through the drainage guide sheet, reaches the filter concrete and can not flow to the drain pipe, and starts to freeze. When the water is frozen throughout the drainage guide sheet, the expansion pressure is transmitted to the shotcrete and the concrete lining, There arises a problem that the displacement or stability is deteriorated.

Also, in the area where much groundwater containing foreign matter is eluted from the shotcrete at the rainy season, shotcrete is lost due to crack or breakage in the shotcrete which is weakened by the expansion pressure generated at the time of icing.

As a result, when the drainage induction sheet for a tunnel is blocked due to foreign matter filtering on the surface contacting the shotcrete over time, defects due to freezing or freezing in cold weather occur, resulting in a shorter life expectancy of the drainage induction sheet than expected. .

Korean Patent Application No. 10-2015-0125203 filed on Apr. 30, 2014, entitled "Waterproofing Method Using Laminated Waterproof Sheet Having Blank at Side of Laminated Waterproof Sheet" Korean Patent Laid-Open No. 10-2013-0023026 filed on Jan. 2, 2012, entitled "PE long filament nonwoven fabric, which has a waterproof sheet formed with an asphalt-based waterproof coating, Resin bonding method " Korean Patent No. 10-1401401 filed on September 27, 2013, entitled "Waterproof System for Tunnel with Grid Sheet and Tunnel Waterproofing Method and Tunnel Waterproof Structure Using the Same" Korean Patent No. 10-1426465 filed on Apr. 24, 2014, entitled "Waterproof sheet for a tunnel having a lattice sheet and a tunnel waterproofing method using the same, Japanese Patent Application Publication No. 2002-129898 filed on Oct. 26, 2000, entitled " Korean Patent No. 10-1005027 filed on April 7, 2008, entitled "Sheet-laminated structure for inducing drainage, tunnel waterproofing structure using it, and tunnel waterproofing method"

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention has been made in view of the above problems, and has as its object to provide a structure in which a first nonwoven fabric, a lattice sheet, a second nonwoven fabric and a waterproof sheet are laminated between a shotcrete and a concrete lining, To a lower portion of the tunnel, and a tunnel waterproofing method using the same.

Another object of the present invention is to provide a waterproofing material for a waterproofing material, in which a first nonwoven fabric is disposed in a shotcrete from which groundwater is released and a second nonwoven fabric is disposed at a position facing the first nonwoven fabric with a grid sheet therebetween, The present invention provides a drainage induction sheet having a nonwoven fabric hole and a tunnel waterproofing method using the same.

According to another aspect of the present invention, there is provided a method for manufacturing a nonwoven fabric, comprising: forming a first nonwoven fabric hole in a first nonwoven fabric, directing groundwater eluted from the shotcrete to a second nonwoven fabric to disperse and drain groundwater containing the foreign material, The present invention is to provide a drainage induction sheet having a nonwoven fabric hole that is advantageous for maintenance of a drainage induction sheet in accordance with an extension (preventing the first nonwoven fabric from being concentratedly closed), and a tunnel waterproofing method using the same.

As a means for achieving the above-mentioned technical object,

A first nonwoven fabric disposed on an inner surface of a shotcrete of a tunnel and having a plurality of first nonwoven holes dispersed in a longitudinal direction and a transverse direction, a grid sheet disposed on an inner surface of the first nonwoven fabric and having a grid pattern, A second nonwoven fabric disposed inside the grid sheet; And a waterproof sheet disposed on an inner surface of the second nonwoven fabric, wherein groundwater containing a foreign matter eluted from the shotcrete at a portion where the first nonwoven fabric hole is formed is directly contacted with the second nonwoven fabric, And a nonwoven fabric hole for dispersing and filtering the nonwoven fabric.

Also preferably,

A first nonwoven fabric having a plurality of first nonwoven fabrics arranged on an inner surface of a shotcrete of a tunnel and extending continuously in a longitudinal direction), a mesh sheet disposed on an inner surface of the first nonwoven fabric and having a lattice pattern, A second nonwoven fabric disposed inside the second nonwoven fabric); And a waterproof sheet disposed on an inner surface of the second nonwoven fabric, wherein groundwater containing a foreign matter eluted from the shotcrete at a portion where the first nonwoven fabric hole is formed directly contacts the second nonwoven fabric, And a nonwoven fabric hole to be dispersed and filtered on the second nonwoven fabric.

Also preferably,

The first nonwoven fabric, the lattice sheet, and the second nonwoven fabric are integrally formed, and the waterproof sheet is separately disposed on the second nonwoven fabric and the nonwoven fabric holes are formed on the shotcrete together.

Also preferably,

The first nonwoven fabric, the lattice sheet, the second nonwoven fabric, and the waterproof sheet are integrally formed to provide a nonwoven fabric hole to be installed in the shotcrete.

Also preferably,

The grid sheet and the second nonwoven fabric are integrally formed and disposed on the first nonwoven fabric. The waterproof sheet is separately disposed on the second nonwoven fabric, and the nonwoven fabric hole is formed on the shotcrete.

Also preferably,

Wherein the waterproof sheet has a waterproof guide sheet formed with a nonwoven fabric layer for preventing groundwater eluted from the shotcrete from penetrating into the concrete lining, Lt; / RTI >

Also preferably,

(a) horizontally arranging a first nonwoven fabric having a first nonwoven fabric hole dispersed in longitudinal and transverse directions on an inner surface of a shotcrete of a tunnel; (b) horizontally arranging a grid sheet, which is a mesh web having a lattice pattern, on the inner surface of the first nonwoven fabric; (c) horizontally arranging a second nonwoven fabric inside the grid sheet; And (d) horizontally arranging a waterproof sheet on an inner surface of the second nonwoven fabric, wherein groundwater containing a foreign matter eluted from the shotcrete at a portion where the first nonwoven fabric hole is formed is directly applied to the second nonwoven fabric And a nonwoven fabric hole through which foreign matter is dispersed and filtered by the first nonwoven fabric and the second nonwoven fabric.

Also preferably,

(a) a first nonwoven fabric having a first nonwoven fabric dispersed in longitudinal and transverse directions and a mesh sheet having a mesh pattern disposed laterally on an inner surface of the first nonwoven fabric, Disposing a second nonwoven fabric, which is arranged in a transverse direction, on the inner surface of the shotcrete of the tunnel; And (b) separately arranging a waterproof sheet on the inner surface of the second nonwoven fabric in a transverse direction, wherein the groundwater containing the foreign matter eluted from the shotcrete at the first nonwoven fabric- And a nonwoven fabric hole through which foreign matter is dispersed and filtered to the first nonwoven fabric and the second nonwoven fabric.

Also preferably,

A first nonwoven fabric having a first nonwoven fabric dispersed in the longitudinal direction and a transverse direction and a mesh net having a lattice pattern arranged laterally on an inner surface of the first nonwoven fabric, And arranging the second nonwoven fabric and the waterproof sheet disposed in the transverse direction on the inner surface of the second nonwoven fabric integrally with the inner surface of the shotcrete of the tunnel, The present invention provides a method for constructing a drainage induction sheet in which groundwater containing foreign matter eluted from shotcrete directly contacts a second nonwoven fabric so that foreign matter is dispersedly filtered through the first nonwoven fabric and the second nonwoven fabric.

Also preferably,

(a) longitudinally arranging a first nonwoven fabric having a first nonwoven fabric hole formed therein so as to extend continuously in a longitudinal direction on an inner surface of a shotcrete of a tunnel; (b) longitudinally arranging a grid sheet, which is a mesh net having a lattice pattern, on the inner surface of the first nonwoven fabric; (c) longitudinally arranging a second nonwoven fabric inside the grid sheet; And (d) longitudinally arranging a waterproof sheet on an inner surface of the second nonwoven fabric, wherein groundwater containing foreign matter eluted from the shotcrete at a portion where the first nonwoven fabric hole is formed is directly applied to the second nonwoven fabric And a nonwoven fabric hole through which foreign matter is dispersed and filtered by the first nonwoven fabric and the second nonwoven fabric.

Also preferably,

(a) a grid sheet, which is a mesh net having a first nonwoven fabric arranged in a longitudinal direction and formed with first nonwoven fabrics arranged to extend continuously in the longitudinal direction and a grid pattern longitudinally arranged on an inner side surface of the first nonwoven fabric, Disposing a second nonwoven fabric integrally formed in the longitudinal direction of the grid sheet on the inner side of the shotcrete of the tunnel; And (b) separately arranging a waterproof sheet in the longitudinal direction on the inner surface of the second nonwoven fabric, wherein the groundwater containing the foreign matter eluted from the shotcrete at the portion where the first nonwoven fabric hole is formed, And a nonwoven fabric hole through which foreign matter is dispersed and filtered to the first nonwoven fabric and the second nonwoven fabric.

Also preferably,

A first nonwoven fabric having first nonwoven fabrics arranged to extend continuously in the longitudinal direction and formed in a longitudinal direction and a mesh sheet having a grid pattern arranged longitudinally on an inner surface of the first nonwoven fabric, And a step of disposing a second nonwoven fabric disposed in the longitudinal direction on the inner side of the first nonwoven fabric and a waterproof sheet disposed in the longitudinal direction on the inner side surface of the second nonwoven fabric integrally with the inner surface of the shotcrete of the tunnel, The present invention provides a method for constructing a drainage induction sheet in which groundwater containing a foreign matter eluted from a shotcrete at a site where holes are formed is directly contacted to the second nonwoven fabric so that foreign matter is dispersedly filtered through the first nonwoven fabric and the second nonwoven fabric.

Also preferably,

(a) disposing a first nonwoven fabric in a longitudinal direction in which a first nonwoven fabric hole is arranged to extend continuously in a longitudinal direction; (b) a grating sheet, which is a meshed grating having a grating pattern arranged in the longitudinal direction, and a second nonwoven fabric arranged in the longitudinal direction on the inner side of the grating sheet are integrally formed on the inner surface of the first non-woven fabric, Side; And (c) disposing a waterproof sheet in the longitudinal direction on the inner surface of the second nonwoven fabric, wherein the groundwater containing the foreign matter eluted from the shotcrete at the first nonwoven fabric- And a nonwoven fabric hole through which foreign matter is dispersed and filtered to the first nonwoven fabric and the second nonwoven fabric.

According to the present invention, a structure in which a first nonwoven fabric, a lattice sheet, a second nonwoven fabric, and a waterproof sheet are laminated between a shotcrete and a concrete lining is provided to induce groundwater eluted from the shotcrete to be drained more efficiently to the lower part of the tunnel, Or the displacement of the tunnel due to the inflation pressure can be prevented and the stability of the tunnel can be improved.

According to the present invention, a first nonwoven fabric having a first nonwoven fabric hole formed therein is disposed in a shotcrete from which groundwater is eluted, and a second nonwoven fabric is disposed at a position facing the first nonwoven fabric with a grid sheet interposed therebetween to extend the filtering period and the product life .

According to the present invention, by forming a plurality of first nonwoven holes in the first nonwoven fabric, the groundwater eluted from the shotcrete is dispersed and guided to the second nonwoven fabric hole, so that the groundwater can be prevented from freezing.

FIG. 1 is a view showing a tunnel provided with a tunnel waterproof structure groundwater according to a conventional technique,
2 is a view showing a tunnel provided with a drainage induction sheet according to an embodiment of the present invention,
FIG. 3A is a view showing the region S1 of FIG. 2 as a drainage induction sheet according to the first embodiment of the present invention,
FIG. 3B is a view showing the area S1 of FIG. 2 as a drainage induction sheet according to the second embodiment of the present invention,
4A, 4B, 4C, 4D and 4E are views showing a tunnel drainage method using a drainage induction sheet according to a second embodiment of the present invention,
5A, 5B and 5C are views showing a tunnel drainage method using a drainage induction sheet according to another embodiment 2 of the present invention,
FIGS. 6A and 6B, FIGS. 7A and 7B are views showing a tunnel drainage method using a drainage induction sheet according to still another embodiment 2 of the present invention,
8A, 8B, 8C, 8D and 8E are diagrams showing a tunnel drainage method using a drainage induction sheet according to the second embodiment of the present invention.
9A, 9B and 9C are views showing a tunnel drainage method using a drainage induction sheet according to another embodiment 1 of the present invention.
FIGS. 10A and 10B and FIGS. 11A and 11B are views showing a tunnel drainage method using a drainage induction sheet according to still another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

A tunnel provided with a drainage induction sheet will be briefly described with reference to Figs. 2A and 2B, and a drainage induction sheet according to the first and second embodiments will be described with reference to Figs. 3A and 3B. The tunnel drainage method using the induction sheet will be described.

2A and 2B are views showing a tunnel 300 provided with a drainage induction sheet according to an embodiment of the present invention.

The tunnel 300 provided with the drainage induction sheet has a general tunnel shape extending in one direction from the semicircle as shown in FIG. 1, and corresponds to a known technology, and thus a detailed description thereof will be omitted.

[Drain guide sheet (200)]

≪ Embodiment 1 >

FIG. 3A is a view showing the region S1 of FIG. 2A as a drainage induction sheet according to the first embodiment of the present invention.

The drainage induction sheet 200 according to the first embodiment of the present invention may include a first nonwoven fabric 210, a lattice sheet 220, a second nonwoven fabric 230, and a waterproof sheet 240.

The first nonwoven fabric 210 is disposed on the inner side B of the shotcrete 110 of the tunnel 100. More specifically, the first nonwoven fabric 210 is formed into a felt shape by arranging the fibers in parallel or in a negative direction without going through a woven fabric process, and constant pores are formed.

Particularly, the first nonwoven fabric 210 is formed by filtering primary particles, foreign matter, and the like together with the groundwater in the course of draining the groundwater eluted from the shotcrete 110 to the lower portion of the tunnel 100, A relatively large amount of foreign matter is filtered and the filtered groundwater is distributed and discharged to the lower portion of the tunnel 100. [

Accordingly, the first nonwoven fabric 210 is blocked by foreign matter before the second nonwoven fabric 230.

3A, the first nonwoven fabric 210 of the drainage induction sheet 200 according to the first embodiment includes a plurality of first nonwoven fabric holes 211 dispersed in the longitudinal direction and the transverse direction, The groundwater containing the foreign matter eluted from the shotcrete 110 passes through the second nonwoven fabric 230 directly without passing through the first nonwoven fabric hole 211 so that the foreign matter is filtered and the filtered groundwater flows to the lower portion of the tunnel 100 To be drained.

In other words, the first non-woven fabric 211 is dispersed in the longitudinal direction and the transverse direction so that the foreign matter contained in the ground water eluted from the shotcrete 110 is not concentratedly filtered on the first nonwoven fabric 210, So that the first nonwoven fabric 210 is prevented from premature clogging.

The blocking of the first nonwoven fabric 210 is delayed as compared with the case where the first nonwoven fabric hole 211 is not formed, so that the life expectancy of the first nonwoven fabric 210 is increased, thereby improving the maintenance efficiency and economical efficiency of the drainage guiding sheet 200 .

The first nonwoven fabric hole 211 is advantageous when the drainage induction sheet 200 is extended in the transverse direction. That is, since the drainage induction sheet 200 is manufactured as a standard product, the width of the drainage induction sheet 200 is about 2 m and the extension length is about 25 m. The drainage induction sheet 200 is installed in the lateral direction, ) In the longitudinal direction (tunnel extension direction).

Since the drainage induction sheets 200 are installed in the transverse direction and the first nonwoven fabric holes 211 are dispersed in the first nonwoven fabric 210 in the longitudinal direction and the transverse direction as shown in FIG. 3 The foreign matter eluted from the shotcrete 110 can be more effectively dispersed and filtered.

Next, the lattice sheet 220 is disposed on the inner side A of the first nonwoven fabric 210 and has a mesh net shape having a lattice pattern.

In addition, the lattice form of the lattice sheet 220 can be any one of a quadrangle, rhombus, and triangle, and can be applied in other forms.

The second nonwoven fabric 230 is disposed on the inner surface A1 of the lattice sheet 220 and is the same in function and material as the first nonwoven fabric 210.

The second nonwoven fabric 230 is not directly contacted with the shotcrete 110 through which the groundwater is eluted as in the first nonwoven fabric 210 but is not directly contacted with the first nonwoven fabric 211 of the present invention, The first non-woven fabric 211 is directly contacted with groundwater containing foreign matter.

The portion where the first nonwoven fabric hole 211 is formed filters the groundwater containing foreign matter directly from the second nonwoven fabric, thereby preventing the first nonwoven fabric from being prematurely closed by foreign matter filtering. At this time, the groundwater filtered by the second nonwoven fabric 230 is drained to the lower portion of the tunnel 100.

Next, the waterproof sheet 240 is disposed on the inner surface of the second nonwoven fabric 230, and is made of a material that allows the groundwater to flow without passing through. Generally, it is preferable to use poly series vinyl, but it is not limited thereto.

The waterproof sheet 240 prevents the groundwater eluted from the shotcrete 110 from penetrating into the concrete lining 120.

The first nonwoven fabric 210, the second nonwoven fabric 230, the lattice sheet 220 and the waterproof sheet 240 on which the first nonwoven fabric 211 is formed are sandwiched between the shotcrete 110 of the tunnel 100 and the waterproof sheet 240 (Not shown) disposed on the inner surface of the tunnel 100 to be drained to the lower portion of the tunnel 100 by filtering the foreign matter of the groundwater eluted from the shotcrete 110. By forming the first nonwoven fabric hole 211, The filtering of the ground water containing foreign matter is dispersed in the second nonwoven fabric 230 so that the first nonwoven fabric 210 is prevented from prematurely blocking the life expectancy of the drainage inducing sheet 200 from being shortened.

≪ Embodiment 2 >

FIG. 3B is a view showing the region S1 of FIG. 2B which is a drainage induction sheet according to the second embodiment of the present invention.

The water discharge guide sheet 200 'according to the second embodiment includes a first nonwoven fabric 210', a lattice sheet 220 ', a second nonwoven fabric 230' and a waterproof sheet 240 ', and the drainage induction sheet 200' according to the second embodiment differs from the first embodiment in the shape of the first nonwoven fabric hole 211 '. Specifically, .

The first nonwoven fabric 210 'is also disposed on the inner surface of the shotcrete 110 of the tunnel 100 and is formed into a felt shape by arranging the fibers in parallel or in a negative direction without going through a weaving process, .

The first nonwoven fabric 210 'is formed by filtering primary particles and foreign matter with the groundwater in the process of draining the groundwater eluted from the shotcrete 110 to the lower portion of the tunnel 100, A relatively larger amount of foreign matter is filtered and the filtered groundwater aids in draining to the lower portion of the tunnel 100.

The result is that the first nonwoven fabric 210 'is blocked by the foreign matter before the second nonwoven fabric 230'.

At this time, the first nonwoven fabric 210 'of the drainage induction sheet 200' according to the second embodiment differs from the first embodiment in that a first nonwoven fabric hole 211 'is formed to extend in the longitudinal direction And FIG. 3B shows that the first nonwoven fabric holes 211 'are formed vertically spaced apart from each other in the longitudinal direction.

As shown in FIG. 3B, the first nonwoven fabric layer 210 'according to the second embodiment of the present invention is formed with first nonwoven fabric holes 211' extending in the longitudinal direction thereof, The groundwater containing the foreign matter eluted from the shotcrete 110 passes through the second nonwoven fabric 230 'directly without passing through the first nonwoven fabric hole 211' so that the foreign matter is filtered and the filtered groundwater flows to the lower portion of the tunnel 100 To be drained.

That is, the first nonwoven fabric 211 'is extended in the longitudinal direction so that the foreign matter contained in the groundwater eluted from the shotcrete 110 is not concentratedly filtered into the first nonwoven fabric 210' So that the first nonwoven fabric 210 'is prevented from premature clogging.

The life of the first nonwoven fabric 210 'is delayed as compared with the case where the first nonwoven fabric 211' is not formed, so that the life expectancy of the first nonwoven fabric 210 'is increased. As a result, It is possible to improve the economical efficiency.

The first nonwoven fabric hole 211 'is advantageous when the drainage induction sheet 200' is extended in the longitudinal direction. That is, since the drainage induction sheet 200 'is manufactured as a standard product, the width is about 2 m and the extension length is about 25 m. In extending the drainage induction sheet 200' in the longitudinal direction, the first non- 'Are also extended in the longitudinal direction, so that the effort of forming the nonwoven fabric holes is greater than that of forming the plurality of the nonwoven fabric holes 211 in the first embodiment, and the amount of foreign matter filtered by the second nonwoven fabric is increased. .

Since the first nonwoven fabric hole 211 'extends continuously in the longitudinal direction as compared with the case where the first nonwoven fabric hole 211' is not formed, the foreign matter contained in the groundwater eluted from the shotcrete 110 is discharged to the first The life expectancy of the first nonwoven fabric 210 'is increased because the first nonwoven fabric 210' is not concentratedly filtered and dispersed in the second nonwoven fabric 220 'to prevent the first nonwoven fabric 210' from being prematurely occluded. The maintenance efficiency of the drainage induction sheet 200 'can be improved.

Next, the lattice sheet 220 'is disposed on the inner side A of the first nonwoven fabric 210' and has a mesh net shape having a lattice pattern.

In addition, the lattice form of the lattice sheet 220 'may be any one of a quadrangle, a rhombus, and a triangle, and the present invention can be applied to other forms.

The second nonwoven fabric 230 'is also disposed on the inner surface A1 of the lattice sheet 220' and is the same in function and material as the first nonwoven fabric 210 '.

Next, the second nonwoven fabric 230 'is not directly contacted by the lattice sheet 220' and the shotcrete 110 from which the groundwater is eluted like the first nonwoven fabric 210 ', but the first nonwoven fabric 230' The formed portion formed in the hole 211 'directly abuts the groundwater containing the foreign matter.

The groundwater containing the foreign matter is directly filtered by the second nonwoven fabric 220 'at the site where the first nonwoven fabric hole 211' is formed, thereby preventing the first nonwoven fabric from being prematurely closed by foreign matter filtering. The groundwater filtered by the nonwoven fabric 230 'is drained to the lower portion of the tunnel 100.

Next, the waterproof sheet 240 'is disposed on the inner surface of the second nonwoven fabric 230', and is made of a material that allows the groundwater to flow without passing through. Generally, it is preferable to use poly-series vinyl, but the present invention is not limited thereto.

The waterproof sheet 240 'also prevents groundwater eluted from the shotcrete 110 from penetrating into the concrete lining 120.

As a result, in Example 2, the first nonwoven fabric 210 ', the second nonwoven fabric 230', the lattice sheet 220 'and the waterproof sheet 240' having the first nonwoven fabric 211 ' And the concrete lining 120 placed on the inner surface of the waterproof sheet 240 so as to drain the groundwater discharged from the shotcrete 110 to the lower portion of the tunnel 100, By forming the first non-woven fabric hole 211 ', the filtering of the ground water containing foreign matter is dispersed so that the first non-woven fabric 210' is prevented from prematurely blocking the life expectancy of the water discharging sheet 200 ' It can be seen that it has.

[Tunnel waterproofing method using drainage induction sheet]

4A, 4B, 4C, 4D and 4E are views showing a tunnel drainage method using the drainage induction sheet according to the first embodiment of the present invention.

[Tunnel waterproofing method using drainage-inducing sheet of Example 1]

The tunnel waterproofing method using the drainage induction sheet according to the first embodiment of the present invention is characterized in that (a) a first nonwoven fabric 210 in which a first nonwoven fabric hole 211 is formed on the inner surface of a shotcrete 110 of a tunnel 100, (B) disposing a grid sheet 220, which is a mesh net having a lattice pattern, on the inner surface of the first nonwoven fabric 210 on which the first nonwoven fabric 211 is formed; (c) Disposing a waterproof sheet 240 on the inner surface of the second nonwoven fabric 230 and (e) disposing the waterproof sheet 240 on the inner surface of the second nonwoven fabric 230 The second nonwoven fabric 210, 230, the lattice sheet 220, and the waterproofing layer 220 may be formed on the inner surface of the first nonwoven fabric layer 240, The seat 240 is disposed between the shotcrete 110 of the tunnel 100 and the concrete lining 120 placed on the inner surface of the waterproof sheet 240, So that groundwater discharged from the tunnel 100 is drained to the lower portion of the tunnel 100.

As shown in FIG. 4A, the method may further include closing the excavation surface of the tunnel 100 by installing the shotcrete 110 before the step (a).

As a result, the steps (a), (b), (c), and (d) are performed as shown in FIGS. 4a to 4d.

That is, the first nonwoven fabric 210 on which the first nonwoven fabric 211 is formed is disposed in the transverse direction as shown in FIG. 4A, and the lattice sheet 220, the second nonwoven fabric 230, and the waterproof sheet 240 After the first nonwoven fabric 210, the lattice sheet 220 and the second nonwoven fabric 230 are fixed to the shotcrete 110 by a tackifier (not shown), the waterproof sheet 240 are installed to provide a drainage induction sheet 200.

Further, when the installation in the lateral direction is completed, the drainage induction sheet 200 is connected to the tunnel extension direction, so that construction according to the extension length of the tunnel is continued.

The first nonwoven fabric 210 formed with longitudinally and laterally dispersed first nonwoven fabric holes 211 filters primary groundwater containing foreign matter eluted from the shotcrete 110 to form the lower part of the tunnel 100. [ And the second nonwoven fabric 230 drains to the lower portion of the tunnel by directly filtering the groundwater containing the foreign matter in the region where the first nonwoven fabric hole 211 is formed.

Next, as shown in FIG. 4E, the concrete lining 120 is installed to complete the tunnel 300 in which the drainage induction sheet 200 is installed.

The first nonwoven fabric 210, the lattice sheet 220, and the second nonwoven fabric 230 having the first nonwoven fabric layer 211 formed thereon as shown in FIGS. 5A, 5B, and 5C, The waterproof sheet 240 is disposed separately and the first nonwoven fabric 210, the lattice sheet 220 and the second nonwoven fabric 230 on which the first nonwoven fabric holes 211 are formed are pressed against the other nonwoven fabric (not shown) A waterproof sheet 240 is installed to install a drainage induction sheet 200 and then a concrete lining 120 is installed so that a drainage induction sheet 200 is installed The tunnel 300 can be completed (a method of installing a half-water type induction sheet).

6A, 6B, and 6C, the first nonwoven fabric 210 having the first nonwoven fabric 211 formed thereon is first disposed, and the lattice sheet 220, the second nonwoven fabric 230, the waterproof sheet 240 The drainage induction sheet 200 is installed and the concrete lining 120 is installed to complete the tunnel 300 in which the drainage induction sheet 200 is installed Installation method of drainage guide sheet).

As shown in FIGS. 7A and 7B, the first nonwoven fabric 210, the lattice sheet 220, the second nonwoven fabric 230, and the waterproof sheet 240 all having the first nonwoven fabric 211 formed thereon are integrally formed The first nonwoven fabric 210, the lattice sheet 220, the second nonwoven fabric 230 and the waterproof sheet 240 on which the first nonwoven fabric 211 is formed are fixed to the shotcrete 110, (Integrated drainage guide sheet installation method).

[Tunnel waterproofing method using drainage-inducing sheet 200 'of Example 2]

8A, 8B, 8C, 8D and 8E are views showing a tunnel drainage method using a drainage induction sheet according to the first embodiment of the present invention.

The tunnel waterproofing method using the drainage induction sheet 200 'according to the second embodiment of the present invention is characterized in that (a) a first nonwoven fabric hole 211' is formed on the inner surface of the shotcrete 110 of the tunnel 100, (B) disposing a grid sheet 220 ', which is a mesh network having a grid pattern, on the first nonwoven fabric 210' where the first nonwoven fabric layer 211 'is formed, (C) placing a second nonwoven fabric 230 'on the inner surface of the lattice sheet 220'; (d) disposing the second nonwoven fabric 230 'on the inner side of the second nonwoven fabric 230' And a step of placing the concrete lining 120 on the inner surface of the waterproof sheet 240. The first nonwoven fabric 211 ' The nonwoven fabric 210 ', the second nonwoven fabric 230', the lattice sheet 220 'and the waterproof sheet 240' are placed on the inner surfaces of the shotcrete 110 and the waterproof sheet 240 ' Concrete lining (120) This is arranged so that the ground water including the foreign matter eluted from the shotcrete 110 drain into the lower portion of the tunnel 100.

In this case, as shown in FIG. 8A, the method may further include finishing the excavation surface of the tunnel 100 by installing the shotcrete 110 before the step (a).

As a result, the steps (a), (b), (c), and (d) are performed as shown in FIGS. 8a to 8d.

That is, the first nonwoven fabric 210 'having the first nonwoven fabric layer 211' formed continuously in the longitudinal direction is arranged in the longitudinal direction as shown in FIG. 2B, and the first nonwoven fabric layer 220 ' And the waterproof sheet 240 'are separately arranged in the longitudinal direction, and then the first nonwoven fabric 210', the lattice sheet 220 'and the second nonwoven fabric 230' A waterproof sheet 240 'is installed on the shotcrete 110, and then a drainage induction sheet 200' is installed.

Further, when the installation in the longitudinal direction is completed, the drainage induction sheet 200 'is connected to the direction of extension of the tunnel so that construction according to the extension length of the tunnel is continued.

Accordingly, the first nonwoven fabric 210 ', which is formed in the longitudinal direction of the first nonwoven fabric layer 211' in the longitudinal direction, filters the groundwater contained in the foreign matter, which is primarily discharged from the shotcrete 110, And the second nonwoven fabric 230 'is drained to the lower portion of the tunnel by directly filtering the groundwater containing the foreign material in the region where the first nonwoven fabric hole 211' is formed.

Next, as shown in FIG. 8E, the concrete lining 120 is installed to complete the tunnel 300 in which the drainage induction sheet 200 'is installed.

At this time, the first nonwoven fabric 210 ', the lattice sheet 220', and the second nonwoven fabric 230 'in which the first nonwoven fabric 211' is formed are not separately provided as shown in FIGS. 9A, 9B, The first nonwoven fabric 210 ', the lattice sheet 220', and the second nonwoven fabric layer 210 'in which the first nonwoven fabric layer 211' is formed are disposed separately from the waterproof sheet 240 ' The waterproof sheet 240 'is installed and the drainage induction sheet 200' is installed, and then the concrete lining 120 'is fixed to the shotcrete 110 by a tongs (not shown) So that the tunnel 300 provided with the drainage induction sheet 200 'can be completed (a method of installing a drainage induction sheet of a half-body type).

10A, 10B and 10C, the first nonwoven fabric 210 'having the first nonwoven fabric 211' formed thereon is disposed first and the second nonwoven fabric 230 ' The drainage induction sheet 200 'is installed and the concrete lining 120 is installed to complete the tunnel 300 provided with the drainage induction sheet 200' (A modified half-fold drainage guide sheet installation method).

The first nonwoven fabric 210 ', the lattice sheet 220', the second nonwoven fabric 230 ', and the waterproof sheet 240', all of which are formed with the first nonwoven fabric 211 'as shown in FIGS. 11A and 11B, The first nonwoven fabric 210 ', the lattice sheet 220', the second nonwoven fabric 230 'and the waterproof sheet 240' having the first nonwoven fabric 211 ' And the water discharge guide sheet 200 'may be provided by fixing the shotcrete 110 to the shotcrete (not shown) (integrated drainage guide sheet installation method).

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: Tunnel
110: shotcrete 120: concrete lining
200, 200 ': drainage induction sheet 210, 210': first nonwoven fabric
211, 211 ': first nonwoven fabric hole 220, 220': grid sheet
230, 230 ': second nonwoven fabric 240, 240': waterproof sheet
300: Tunnel provided with drainage induction sheet

Claims (16)

A first nonwoven fabric 210 disposed on an inner surface of a shotcrete of a tunnel and having a plurality of first nonwoven holes 211 dispersed in a longitudinal direction and a transverse direction;
A grid sheet (220) disposed on the inner surface of the first nonwoven fabric and being a mesh web having a grid pattern;
A second nonwoven fabric (230) disposed inside the grid sheet; And
And a waterproof sheet (240) disposed on an inner surface of the second nonwoven fabric,
The non-woven fabric sheet according to any one of claims 1 to 3, wherein the non-woven fabric comprises a non-woven fabric, and the non-woven fabric has a non-woven fabric hole through which foreign matter is dispersed and filtered by the second non-woven fabric. A first nonwoven fabric sheet 210 'formed on the inner surface of the shotcrete of the tunnel and having a plurality of continuous nonwoven fabric holes 211' extending in the longitudinal direction;
A mesh sheet 220 'disposed on the inner surface of the first nonwoven fabric and having a grid pattern;
A second nonwoven fabric layer 230 'disposed inside the lattice sheet; And
And a waterproof sheet (240 ') disposed on an inner surface of the second nonwoven fabric,
And the groundwater containing the foreign matter eluted from the shotcrete at the site where the first nonwoven fabric hole 211 'is formed is directly contacted with the second nonwoven fabric so that the foreign matter is dispersed and filtered by the first nonwoven fabric and the second nonwoven fabric. Guide sheet. 3. The method according to claim 1 or 2,
The first nonwoven fabric 210 and 210 ', the lattice sheets 220 and 220' and the second nonwoven fabric 230 and 230 'are integrally formed and the waterproof sheets 240 and 240' are separately disposed on the second nonwoven fabric 230 and 230 ' Wherein the nonwoven fabric layer is formed on the surface of the nonwoven fabric. 3. The method according to claim 1 or 2,
Wherein the first nonwoven fabric 210, 210 ', the lattice sheet 220, 220', the second nonwoven fabric 230, 230 ', and the waterproof sheet 240, 240' are integrally formed to form a nonwoven fabric hole to be installed in the shotcrete. 3. The method according to claim 1 or 2,
The lattice sheets 220 and 220 'and the second nonwoven fabric 230 and 230' are integrally formed and disposed on the first nonwoven fabric 210 and 210 ', and the waterproof sheets 240 and 240' are separately disposed on the second nonwoven fabric 230 and 230 ' And a nonwoven fabric hole is formed in the shotcrete together. 3. The method according to claim 1 or 2,
The groundwater filtered by the foreign materials in the first and second nonwoven fabrics 210 and 210 'and the second nonwoven fabric 230 and 230' is drained to the lower portion of the tunnel,
The waterproof sheet (240, 240 ') has a nonwoven fabric hole for preventing groundwater eluted from the shotcrete from penetrating into the concrete lining. (a) horizontally arranging a first nonwoven fabric (210) having a first nonwoven fabric hole (211) dispersed longitudinally and laterally on an inner surface of a shotcrete of a tunnel;
(b) horizontally arranging a grid sheet (220), which is a meshed mesh having a lattice pattern, on the inner surface of the first nonwoven fabric;
(c) horizontally arranging a second nonwoven fabric (230) inside the grid sheet; And
(d) horizontally arranging the waterproof sheet (240) on the inner surface of the second nonwoven fabric,
A drainage inducing part for discharging the foreign matter to the first non-woven fabric and the second non-woven fabric by dispersing and filtering the groundwater containing the foreign matter leaking from the shotcrete at the part where the first non-woven fabric hole 211 is formed, Sheet construction method. (a) a first nonwoven fabric 210 having a first nonwoven fabric 211 dispersed in a longitudinal direction and a transverse direction, and a second nonwoven fabric 210 having a mesh pattern having a mesh pattern disposed laterally on the inner surface of the first nonwoven fabric. (220) and a second nonwoven fabric (230) disposed transversely to the inside of the grid sheet are integrally formed on the inner surface of the shotcrete of the tunnel; And
(b) disposing a waterproof sheet (240) on the inner surface of the second nonwoven fabric in the lateral direction,
A drainage inducing part for discharging the foreign matter to the first non-woven fabric and the second non-woven fabric by dispersing and filtering the groundwater containing the foreign matter leaking from the shotcrete at the part where the first non-woven fabric hole 211 is formed, Sheet construction method. (a) disposing a first nonwoven fabric (210) having a first nonwoven fabric hole (211) dispersed in a longitudinal direction and a transverse direction;
(b) a grid sheet 220, which is a mesh network having a grid pattern disposed laterally on the inner surface of the first nonwoven fabric, and a second nonwoven fabric 230, which is disposed laterally on the inner side of the grid sheet, Placing on the inner surface of the shotcrete of the tunnel; And
(c) disposing a waterproof sheet (240) on the inner surface of the second nonwoven fabric in the transverse direction,
A drainage inducing part for discharging the foreign matter to the first non-woven fabric and the second non-woven fabric by dispersing and filtering the groundwater containing the foreign matter leaking from the shotcrete at the part where the first non-woven fabric hole 211 is formed, Sheet construction method. A first nonwoven fabric 210 having a first nonwoven fabric 211 dispersed in a longitudinal direction and a transverse direction and a grid sheet 220 as a meshed mesh having a grid pattern disposed laterally on an inner surface of the first nonwoven fabric, A second nonwoven fabric 230 disposed transversely to the inner side of the grid sheet and a waterproof sheet 240 disposed laterally on the inner surface of the second nonwoven fabric are integrally formed on the inner side of the shotcrete of the tunnel ; ≪ / RTI >
A drainage inducing part for discharging the foreign matter to the first non-woven fabric and the second non-woven fabric by dispersing and filtering the groundwater containing the foreign matter leaking from the shotcrete at the part where the first non-woven fabric hole 211 is formed, Sheet construction method. (a) longitudinally arranging a first nonwoven fabric (210 ') having a first nonwoven fabric hole (211') formed so as to extend continuously in the longitudinal direction on the inner surface of a shotcrete of a tunnel;
(b) longitudinally arranging a grid sheet 220 ', which is a meshed grid having a lattice pattern, on the inner surface of the first nonwoven fabric;
(c) longitudinally arranging a second nonwoven fabric (230 ') inside the grid sheet; And
(d) longitudinally arranging a waterproof sheet (240 ') on the inner surface of the second nonwoven fabric,
And the groundwater containing the foreign matter eluted from the shotcrete at the site where the first nonwoven fabric hole 211 'is formed is directly contacted with the second nonwoven fabric so that the foreign matter is dispersed and filtered by the first nonwoven fabric and the second nonwoven fabric. Guiding sheet construction method. (a) a first nonwoven fabric 210 'having a longitudinally arranged first nonwoven fabric hole 211' arranged to extend continuously in the longitudinal direction and a longitudinally arranged lattice Placing a grid sheet 220 ', which is a mesh having a pattern, and a second nonwoven fabric 230' disposed in the longitudinal direction of the grid sheet integrally, on the inner side of the shotcrete of the tunnel; And
(b) disposing a waterproof sheet (240 ') in the longitudinal direction on the inner surface of the second nonwoven fabric,
And the groundwater containing the foreign matter eluted from the shotcrete at the site where the first nonwoven fabric hole 211 'is formed is directly contacted with the second nonwoven fabric so that the foreign matter is dispersed and filtered by the first nonwoven fabric and the second nonwoven fabric. Guiding sheet construction method. (a) disposing a first nonwoven fabric (210 ') in a longitudinal direction in which a first nonwoven fabric hole (211') arranged to extend continuously in the longitudinal direction is formed;
(b) a grating sheet 220 ', which is a meshed grating having longitudinally arranged grating patterns, and a second nonwoven fabric 230' arranged in the longitudinal direction on the inner side of the grating sheet, To the inner surface of the shotcrete of the tunnel; And
(c) disposing a waterproof sheet (240 ') in the longitudinal direction on the inner surface of the second nonwoven fabric,
And the groundwater containing the foreign matter eluted from the shotcrete at the site where the first nonwoven fabric hole 211 'is formed is directly contacted with the second nonwoven fabric so that the foreign matter is dispersed and filtered by the first nonwoven fabric and the second nonwoven fabric. Guiding sheet construction method. A first nonwoven fabric 210 'having a longitudinally arranged first nonwoven fabric hole 211' arranged to extend continuously in the longitudinal direction and a second nonwoven fabric layer 210 'having a longitudinally arranged lattice pattern on the inner side surface of the first nonwoven fabric A second nonwoven fabric 230 'disposed longitudinally on the inner side of the mesh sheet 220' and a waterproof sheet 240 'disposed longitudinally on the inner surface of the second nonwoven fabric integrally And arranging the formed material on the inner surface of the shotcrete of the tunnel,
And the groundwater containing the foreign matter eluted from the shotcrete at the site where the first nonwoven fabric hole 211 'is formed is directly contacted with the second nonwoven fabric so that the foreign matter is dispersed and filtered by the first nonwoven fabric and the second nonwoven fabric. Guiding sheet construction method. 15. The method according to any one of claims 7 to 14,
And inserting a concrete lining (120) on an inner surface of the waterproof sheet (240, 240 '). 15. The method according to any one of claims 7 to 14,
A method for constructing a drainage induction sheet in which groundwater filtered by foreign matter from the first nonwoven fabric (210, 210 ') and second nonwoven fabric (230, 230') is drained to a lower portion of a tunnel.


KR1020160026829A 2016-03-07 2016-03-07 Draining guidance sheet with non-woven fabrics hole and tunnel waterproofing method using the same KR20170104678A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108825247A (en) * 2018-06-20 2018-11-16 北京城建集团有限责任公司 A kind of flare sidewall horizontal for 8 pilot tunnel PBA engineering methods makes bottom basin shape and freezes sealing engineering method
WO2020171896A1 (en) * 2019-02-20 2020-08-27 Dsi Tunneling Llc Underground support system and method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108825247A (en) * 2018-06-20 2018-11-16 北京城建集团有限责任公司 A kind of flare sidewall horizontal for 8 pilot tunnel PBA engineering methods makes bottom basin shape and freezes sealing engineering method
CN108825247B (en) * 2018-06-20 2023-08-04 北京城建集团有限责任公司 External inclination side wall horizontal bottom-making basin-shaped freezing water stop construction method for 8 pilot tunnel PBA construction method
WO2020171896A1 (en) * 2019-02-20 2020-08-27 Dsi Tunneling Llc Underground support system and method
US11092010B2 (en) 2019-02-20 2021-08-17 Dsi Tunneling Llc Underground support system and method

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