KR100714848B1 - Complex water protecting penel for tunnel and the construction method - Google Patents

Abstract

The present invention relates to a composite index plate for tunnels and a construction method thereof, and more particularly, to the ECB waterproof sheet and EVA waterproof sheet used in tunnel construction as being developed to maximize the exponential effect of concrete joints in NATM tunnel construction. Since it can be fixed directly, it is easy to install, and the water-expandable index material is composed in the index plate to serve as a general index plate, and it is possible to double the index at the water-expansion site where water leaks when there is a void in the sphere. The present invention relates to a tunnel composite index plate capable of exerting an effect and a construction method thereof.

The composite index plate of the present invention has a central buffer portion having a hollow hollow portion in a vertical direction at the center of the plate-shaped index plate body, and a plurality of anchors formed vertically on the left and right sides of the central buffer portion, and both sides spaced apart from the anchor protrusion. In the center and the upper portion of the exponential stocking portion having an exponential fixing hole is formed, a water-expandable index member inserted into and fixed to the exponent-fixing hole, and the outer surface spaced apart from the exponential stocking portion in which the water-expansion index member is installed It characterized in that the anchor projection is formed integrally

Tunnel, composite index plate, index plate body, hollow buffer, anchor anchor, water expansion index.

Description

Complex water protecting penel for tunnel and the construction method

1 is a perspective view of a composite index plate according to the present invention.

2 is a cross-sectional view of the composite index plate according to the present invention.

Figure 3 is a cross-sectional view of the tunnel construction composite composite plate is installed according to the present invention.

<Code Description of Main Parts of Drawing>

10: composite index 1: index body

2: central buffer part 2a: hollow part

3: anchor protrusion 3a: protrusion convex

4: Index stock government 4a: Index stock hole

5: water-expandable index 20: shotcrete

30: nonwoven fabric 40: waterproof sheet

50: concrete 60: lining joint

The present invention relates to a composite index plate for tunnels and a construction method thereof, and more specifically, to develop an exponential effect of concrete joints in NATM (New Austrian Tunneling Method) tunnel construction. It can be directly fixed to ETHYLENE COPOLYMER BITUMEN) waterproof sheet and EVA (ETHYLENE VINYL ACETATE) waterproof sheet, so it is easy to install. The present invention relates to a tunnel composite index plate capable of exhibiting the effect of a double index that can be secondarily indexed at the water-expandable part and a construction method thereof.

In general, when constructing concrete in tunnels, roads, mountain tunnels, general tunnels, etc., when the pour is completed, the post-installation is in progress.

In addition, a water plate for preventing leakage in this part has been developed in the portion jointed between the sunthaol portion and the futhaol portion causes the voids of the seam as the concrete of the futhaol portion is dried after construction.

The conventional index plate forms a plurality of index wings centered on one hollow portion and the hollow portion in the thin plate-shaped body of the PVC resin material.

The exponential wings stand vertically on the plate to hinder the flow of water seeping into the seam and serve as the resulting exponent.

Since the index plate is made of PVC material and is difficult to install, it is very difficult for the installers, and it is very difficult for the builders to weld the ECB waterproof sheet or EVA waterproof sheet when welding the tunnel. There was a problem of poor construction.

However, in the case of such a conventional PVC index plate, but the number of index blades and the hollow portion interferes with the flow of water in the seam, but as a result, it is only to interfere with the flow of water, it was not possible to solve the leak phenomenon at the source.

In addition, the conventional resin joint expansion plate completely prevents the problems caused by shrinkage and extreme uneven settlement of concrete and the problems of leakage due to voids with the index plate because they do not function properly due to the separation and breakage of concrete. It could not be removed.

In addition, the conventional index plate is not able to prevent the voids of the joint portion generated in the abnormality of the structure, such as broken concrete, it was difficult to play a role as a index plate due to the poor connection of the joint.

In order to solve the above problems, an object of the present invention is to provide a composite index plate for the tunnel and its construction method that can maximize the exponential effect of the concrete joint portion in the tunnel construction.

Another object of the present invention is to provide a composite index plate for the tunnel to prevent the leakage phenomenon in the seam by having a double index performance by filling the gap between the concrete and the index plate by the water expansion index material together with the role of the lining joint index plate during the tunnel construction And a construction method thereof.

Another object of the present invention is to allow the composite index plate to be adhered well when welding with ECB waterproof sheet or EVA waterproof sheet to prevent poor adhesion and poor construction to prevent water leakage due to poor connection at the concrete joint site in advance. The present invention provides a tunnel composite index plate and a construction method thereof.

Still another object of the present invention is to provide a composite index plate for tunnels and a construction method thereof that are easy to carry and install by the composite index plate.

In order to achieve the above object, the present invention is a composite index plate for the tunnel, the composite index plate is a central buffer portion forming a hollow hollow in the vertical direction to the center of the plate-shaped index plate body, and the left centered on the central buffer portion And, a number of anchor projections formed in the vertical direction on the right side, the index and the center of the index opening fixing the center and the upper portion is formed on both sides spaced apart from the anchor projection, and the water-expandable index member is inserted into the index fixing hole and fixed In addition, the anchor expansion in the vertical direction on the outside spaced apart from the index stock is installed, the water-expandable index is characterized in that the integrally formed.

The anchoring protrusion is a convex protrusion having a convex upper end, and the anchoring protrusion is characterized in that formed on the plate of the index plate body to a height of 13mm-15mm.

The index plate body is made of an ethylene copolymer (Ethylene Copolymer), the water-expandable index of the material is a hydrophilic elastomer (Hydrophilic Elastomer) 40-50%, polyethylene oxide polyurethane polyurethane (Polyethylene Oxide Polyurethane Prepolymer) 15- It is formed by mixing 30% and 20-45% of fillers.

A shotcrete process of pouring a cement mortar mixed with cement, fine aggregate, coarse aggregate, water, and a fastener through a nozzle to pour the surface after the tunnel excavation; Installing a nonwoven fabric and a waterproof sheet on the surface of the shotcrete; On the surface on which the waterproof sheet is installed, a central buffer portion having a hollow hollow portion in a vertical direction at the center of the plate-shaped index plate body, and a plurality of anchors formed vertically on the left and right sides of the central buffer portion, spaced apart from the anchor protrusion Installing a composite index plate having water expansion index members installed in both index inventory governments; Bonding the composite index plate and the waterproof sheet by welding; The process of performing the first casting of the concrete to the lining joint, which is the central buffer part of the composite index plate, and the process of performing the second casting of the concrete from the lining joint, is characterized in that it is possible to prevent leakage of the concrete joint part.

The waterproof sheet is characterized in that the ECB waterproof sheet or EVA waterproof sheet.

The water-expandable index member is characterized in that when the water in contact with the water expands to be in close contact with the structure contact surface to maintain a closed pressure to completely seal the empty voids and water path of the joint portion to prevent leakage.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth.

1 is a perspective view of the composite index plate according to the present invention, Figure 2 is a cross-sectional view of the composite index plate according to the present invention, the composite index plate according to the present invention is installed as shown in FIG. Tunnel construction cross section

1 and 2 of the present invention in the composite index plate for the tunnel, the composite index plate 10 is a central buffer portion forming a hollow hollow portion (2a) in the vertical direction to the center of the plate-shaped index plate body (1) ( 2) form. A plurality of anchoring protrusions 3 are formed in the vertical direction on the left and right sides of the central buffer part 2. On both sides spaced apart from the anchor projection 3, the center and the upper portion are opened to form an index stock fixing portion 4 having an index fixing hole 4a. The water expansion index (5) is assembled to be inserted into the water stop fixing hole (4a) to protrude upward. An anchor protrusion 3 is integrally formed in the vertical direction on the outside spaced apart from the index stock fixing unit 4 in which the water-expandable index member 5 is installed.

The anchor projection 3 is a projection convex portion (3a) having a circular convex upper end, the anchor projection (3) is formed to protrude to a height of 13mm-15mm on the plate of the index plate body.

The index plate body (1) of the composite index plate 10 is made of ethylene copolymer (Ethylene Copolymer), the water-expandable index (5) is 40-50% of the hydrophilic elastomer (Hydrophilic Elastomer), polyethylene oxide It is formed by mixing 15-30% of polyurethane oxide (Polyethylene Oxide Polyurethane Prepolymer) and 20-45% of a filler (Filler).

The water-expandable index (5) is in contact with the water to expand and close to the contact surface of the structure to maintain a closed pressure to completely seal the voids and water path of the joint to prevent leakage. The lower side of the water-expandable index 5 is formed on both sides of the rectangular wing so that it can be inserted into the still water fixing hole (4a).

1 to 3, which was developed to maximize the exponential effect of concrete joints in NATM (New Austrian Tunneling Method) tunnel construction, cement, fine aggregate, coarse aggregate, water, and fastener on the tunnel excavation surface after tunnel excavation Shotcrete 20 process of spraying the mixed cement mortar through the nozzle to pour the surface; Installing a nonwoven fabric 30 and a waterproof sheet 40 on the surface of the shotcrete 20; On the surface on which the waterproof sheet 40 is installed, a central buffer part 2 having a hollow hollow part in a vertical direction in the center of the plate-shaped index plate body 1, and perpendicular to the left and right centers of the central buffer part 2, respectively. Installing a composite index plate 10 having a plurality of anchor projections 3 formed in a direction, and a water-expandable index member 5 installed on the index inventory 4 on both sides spaced apart from the anchor projections 3; Bonding the composite index plate 10 and the waterproof sheet 40 by welding; The process of first placing the concrete 50 to the lining joint 60, which is the central buffer part 2 of the composite index plate 10, and the second casting of the concrete 50 from the lining joint 60 As a process, it is installed to prevent leakage of concrete joints.

The waterproof sheet 40 is made of ECB waterproof sheet or EVA waterproof sheet.

The composite index plate 10 as described above has the same melting point when welding the ECB waterproof sheet or EVA waterproof sheet, which is the waterproof sheet 40, to be easily bonded to each other.

The composite index plate (10) used in the tunnel construction can be directly fixed to the ECB (ETHYLENE COPOLYMER BITUMEN) waterproof sheet and EVA (ETHYLENE VINYL ACETATE) waterproof sheet. The composite material (5) is composed of a composite index plate not only serves as a general index plate, but also exhibits the effect of a double index that can be secondly indexed in the area of the water-expandable index (5) when there is a void in the sphere. .

The NATM tunnel method is proved to be superior to the conventional method and economical and stable, and is applied to most tunnels in urban and mountainous areas. In this method, the ground itself is the main support material, which uses shotcrete and rockbolt to strengthen the excavation surface so that the construction can be effectively carried out even in areas where the rock is weak. The tunnel process determines and excavates the support form based on the data from the geological survey.

3, the shotcrete 20 is first used for the purpose of stabilizing the excavation surface of the tunnel ceiling immediately after the excavation of the tunnel. The shotcrete 20 is a cement mortar in which cement, fine granules, coarse aggregate, water, and a fastener are mixed. It is pushed into the compressed air and sprayed through the nozzle to pour the surface. The nonwoven fabric 30 and the waterproof sheet 40 are installed on the surface of the shotcrete 20. The waterproof sheet 40 uses an ECB waterproof sheet or EVA waterproof sheet. The composite index plate 10 is installed on the surface on which the waterproof sheet 40 is installed. The composite index plate 10 and the waterproof sheet 40 are bonded by welding. When the concrete 50 is hardened by first placing the concrete 50 to the central buffer part 2 which forms the central bulk hollow part of the composite index plate 10, the concrete 50 is placed on the remaining part of the bulb-type central buffer part 2. When you cast, you are done.

In this state, the lining joint 60 is formed between the concrete 50 primary placing portion and the secondary secondary placing portion.

The anchor protrusion 3 of the composite index plate 10 has a circular convex portion 3a at an end thereof, so that the concrete 50 and the index plate body 1 are firmly coupled to each other to prevent penetration of water.

The composite index plate 100 maximizes the exponential effect of the joint of the lining joint (6) of the concrete 50, and can be directly fixed by the same melting point when welding with ECB waterproof sheet or EVA waterproof sheet. The composite index plate (10) and the anchor projection (2) and the water-expandable index (5) is composed of a composite not only serves as a general index plate but also leaks when there is a void in the sphere water expansion index (5) site Can be exponentially quadratic.

The water-expandable index member (5) is inherently expanded by about 2-10 times when water is eaten due to its inherent characteristics to form a water expansion to block the gap of the waterway to prevent the phenomenon of water leakage in the seam.

On the other hand, in the detailed description of the present invention has been described with respect to the composite index plate for a specific tunnel, it will be apparent to those skilled in the art that various modifications are possible without departing from the scope of the present invention.

As described above, according to the present invention, the composite index plate has a role of the lining joint index plate in tunnel construction, and has a double index performance by filling the gap between the concrete and the index plate by the water-expandable index member to prevent leakage phenomenon in the seam. It can be effective. In addition, the composite index plate has the effect of preventing adhesion and construction failure by welding well with ECB waterproof sheet or EVA waterproof sheet, thereby preventing water leakage due to poor connection at the concrete joint site. In addition, the composite index plate is light and convenient for the transporter to install. With the role of index plate for general construction joints, it has double index performance by water-expandable index material, which can eliminate the seam leakage phenomenon between post-pouring parts when constructing tunnel concrete.

Claims (7)

delete In the composite index plate, The composite index plate is a central buffer portion having a hollow hollow portion in the vertical direction in the center of the plate-shaped index plate body, and a plurality of anchors formed in a vertical direction on the left and right centers around the central buffer portion, and on both sides spaced apart from the anchor protrusion An anchor in the vertical direction, spaced apart from the index stock fixing portion having an upper portion and an upper portion opened to form an index fixing hole, a water-expandable index material inserted into and fixed to the index-fixing hole, and an index- stocking portion provided with the water-expanding index material Protrusions are formed integrally, the index plate body is made of ethylene copolymer (Ethylene Copolymer), the water-expandable index is 40-50% of the hydrophilic elastomer (Hydrophilic Elastomer), and the polyethylene oxide polyurethane perpolymer ( Polyethylene Oxide Polyurethane Prepolymer) 15-30%, composite index for the tunnel, characterized in that formed by mixing (filler) 20-45% . The composite index plate for a tunnel according to claim 2, wherein the anchor protrusion forms a convex protrusion having a convex upper end, and the anchor protrusion has a height of 13 mm to 15 mm on a plate of the index plate body. A shotcrete process of pouring a cement mortar mixed with cement, fine aggregate, coarse aggregate, water, and a fastener through a nozzle to pour the surface after the tunnel excavation; Installing a nonwoven fabric and a waterproof sheet on the surface of the shotcrete; On the surface on which the waterproof sheet is installed, a central buffer portion having a hollow hollow portion in a vertical direction at the center of the plate-shaped index plate body, and a plurality of anchors formed vertically on the left and right sides of the central buffer portion, spaced apart from the anchor protrusion Installing a composite index plate having water expansion index members installed in both index inventory governments; Bonding the composite index plate and the waterproof sheet by welding; The composite composite for tunnels can be prevented from leaking concrete joints by first placing concrete to lining joints, which are central buffer parts of the composite index plate, and secondly placing concrete from the lining joints. Index plate construction method. The method of claim 4, wherein the waterproof sheet is ECB waterproof sheet or EVA waterproof sheet construction method for the composite index plate construction. The method according to claim 5, wherein the index plate body is made of ethylene copolymer (Ethylene Copolymer), the water-expandable index is made of hydrophilic elastomer (Hydrophilic Elastomer) 40-50%, polyethylene oxide polyurethane perpolymer (Polyethylene Oxide) Polyurethane prepolymer) 15-30%, the composite composite plate construction method for tunnels, characterized in that formed by mixing (filler) 20-45%. The composite index plate construction according to claim 6, wherein the water-expandable index member expands when it comes in contact with water to be in close contact with the structure contact surface to maintain a closed pressure so as to completely close the voids and water paths in the joint to prevent leakage. Way.

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