JP2002054396A - Spring water disposal sheet material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spring water disposal sheet material capable of facilitating/simplifying the mounting of a spring water disposal sheet material, increasing efficiency of work, shortening a construction period and reducing a construction cost. SOLUTION: The spring water disposal sheet material is so constituted that elastic members 2 equipped with water permeability along the longitudinal direction are arranged and fixed to one face side of a sheet body 1 formed in the shape of a belt, the elastic members 2 are put on a water permeable supporting member 3 mounted to one face side of the sheet body 1, cylindrical holding cylinder sections 6 are provided to the side edges of the sheet body 1 along the longitudinal direction and, at the same time, that mounting belts 7 consisting of a soft elastic material such as synthetic resin or the like are inserted into the holding cylinder sections 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the construction of a tunnel wall mainly composed of rock bolts and shotcrete, and a square plate or nut at the base end of a lock bolt which is driven through a primary lining concrete wall. And a spring treatment sheet material that functions as a drainage channel for spring water.

[0002]

2. Description of the Related Art Conventionally, when a concrete wall of a tunnel inner wall is constructed, a method of interposing a non-water-permeable waterproof sheet between a primary lining concrete wall and a secondary lining concrete wall is widely known. . In other words, according to this construction method, a number of lock bolts are cast many times along the circumferential direction on the primary lining concrete wall formed by spraying concrete on the inner wall surface of the tunnel, and the primary lining is formed. A square-shaped square plate is fitted to the base end of the lock bolt projecting from the concrete wall, and a nut for pressing the square plate against the primary lining concrete wall is screwed. If the waterproof sheet is damaged or spring water is generated by a plurality of lock bolts or square plates arranged in the circumferential direction, the base end of the lock bolt or the square plate is covered so as not to fall down during the work so as not to fall during the work. A belt-shaped spring water treatment sheet made of synthetic resin is attached to the wall surface. More specifically, in the construction, first, the spring treatment sheet material is applied to the base end portion of the lock bolts arranged on the inner peripheral surface of the tunnel and the square plate, and then to both side edges thereof. A metal strip was placed from above each of them, and concrete nails were cast at predetermined intervals on the inner wall surface of the tunnel via the strip from above. In this way, the surface of the primary lining concrete wall to which the spring treatment sheet material is attached is covered with the waterproof sheet, and the secondary lining concrete is sprayed on the surface.

[0003]

However, in the state where the spring treatment sheet material is addressed to the surface of the primary lining concrete wall, metal strips must be arranged along both side edges thereof. It requires a large number of people to work, so it is very troublesome.Because the concrete nail is hit from the metal strip, the tip of the concrete nail slips and falls off when driving in. However, there were many difficulties and difficulties, and there were also dangers such as rebounding concrete nails hitting workers. In this way, since many spring treatment sheet materials are attached to the surface of the primary lining concrete wall, work efficiency is extremely low and the construction period is prolonged. Was. Therefore, the present invention has been made to solve the above-mentioned problems, and it is possible to increase the efficiency of work, shorten the construction period, and reduce the construction cost by facilitating and simplifying the installation of the spring water treatment sheet material. It is an object of the present invention to provide a spring treatment sheet material.

[0004]

In order to achieve the above object, a spring-treated sheet material according to the present invention is provided with an elastic material having water permeability along one longitudinal side of a sheet body formed in a belt shape along its longitudinal direction. A member is arranged and fixed, and a mounting belt made of a soft elastic material such as a synthetic resin is integrally provided on a side edge of the seat body along a longitudinal direction thereof. When spring water comes out, a non-water permeable sheet body is used. When spring water does not come out, a water permeable sheet body may be used. It is preferable that the mounting belt is inserted through holding cylinders provided along both side edges of the seat body. As a means for fixing the elastic member, for example, a means for interposing an elastic member between one side surface of the sheet body and a nonwoven fabric which is a water-permeable supporting member attached to and attached to this surface is employed.

[0005] Since the mounting belt is provided integrally with the side edge of the seat body, a metal strip as an auxiliary material which is separately prepared is not necessary, so that the work is easy and simplified.
It is safe without bouncing concrete nails. The elastic member is preferably made of, for example, polypropylene resin, and is formed in a mat shape by depositing a large number of monofilaments in a random loop shape. Since the elastic member covers the base end, the square plate, or the nut at the base end of the lock bolt, the seat body is prevented from being damaged. In addition, since it has water permeability, it functions as a drainage channel for spring water, and free lime hardly adheres.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a spring treatment sheet material according to the present invention will be described below with reference to the drawings. FIG. 1 is a rear perspective view of the spring water treatment sheet material, and FIG. 2 is a plan sectional view of the same. The spring treatment sheet material A is made of a polypropylene resin or a vinyl chloride resin, is impermeable to water, and has a belt-like shape (usually,
The elastic member 2 is arranged and fixed on one surface side of the sheet main body 1 formed at 0 to 12 m). That is, a nonwoven fabric 3 as a support member having both ends bonded along its longitudinal direction is fixed to one surface side of the sheet body 1, and between the sheet body 1 and the nonwoven fabric 3, The elastic member 2 is attached to the elastic member. The sheet body 1 may be made of a water-impermeable material when spring water is assumed, and may be made of a water-permeable material such as nonwoven fabric when spring water is not assumed.

The elastic member 2 is made of, for example, polypropylene resin, is formed in a mat shape by depositing a large number of monofilaments in a random loop shape, and is fixed to the non-woven fabric 3 by a stapler 4. The reason why the polypropylene resin was selected is that the polypropylene resin is stable to alkaline and concrete and mortar for a long time, has no polarity and does not adhere free lime, and by depositing a large number of monofilaments in a random loop shape. It has high elasticity and strength, and also has excellent durability. In addition, by increasing the aperture ratio between the loop-shaped monofilaments, the water permeability is excellent and the water collecting and draining functions are enhanced, and the drainage flow path of the spring water is sufficiently secured. In addition, a predetermined length (for example, about 50 cm) is attached by being added, and depending on the case, it may be specially formed into a desired size or a desired curved shape.

As the non-woven fabric 3 as the support member, a material which has water permeability and is not easily damaged by water or the like is selected. However, the material is not limited to a sheet shape which covers the elastic member 2 as in the present embodiment. Although not shown, for example, a tape-shaped member which is arranged on both sides of the elastic member 2 and is adhered and fixed together with the sheet main body 1 may be used.

[0009] Both sides 1 of the seat body 1
a, 1a is folded back to one side with a predetermined width, and the folded leading edge is integrally attached to the sheet body 1 to provide a holding cylinder portion 6 along its longitudinal direction. Then, a mounting belt 7 made of a soft elastic material is inserted into each holding tube portion 6. The attachment belt 7 is fixed to the holding cylinder 6 by a stapler 8. The mounting belt 7 has substantially the same length as the seat body 1 and is made of a soft elastic material, for example, a synthetic resin material or rubber, or a synthetic rubber material, and is capable of driving concrete nails, which will be described later, and has a strong primary lining. Any material can be used as long as it can be crimped to the concrete wall surface and can easily spread the sheet body 1 without breaking easily.

[0010] The spring water treatment sheet material A according to the present invention has the above-described structure. FIG.
FIG. 3 is a perspective view showing a state where the spring treatment sheet material A is mounted on the inner wall surface of the tunnel. After the primary lining concrete is sprayed on the inner wall surface, a number of lock bolts 9 are driven into the primary lining concrete wall W1 along the circumferential direction, so that the primary lining concrete wall W1 is formed. W
A rectangular square plate 10 is fitted to the base end 9a of the lock bolt 9 protruding from the nut 1, and a nut 11 is screwed into the square plate. Then, the nut 11 is screwed to press the square plate 10 against the surface of the primary lining concrete wall W1. Numeral 12 is a cap made of synthetic resin which is mounted on the nut 11 and has a spherical end surface for protecting the water-stop sheet S described later by the base end 9a of the lock bolt 9 or the nut 11 from being broken. ing.

Next, as shown in FIG. 4, a cap 12 fitted to the base end 9a of the elastic member 2 corresponding to each of the lock bolts 9 laid in multiple layers along the circumferential direction of the tunnel. The spring material sheet A is temporarily held down in a state in which the concrete nails 13 are covered, and a plurality of concrete nails 13 are temporarily attached to the lining concrete wall W1 via the attachment belt 7 on one side.
In order. As described above, since the mounting belt 7 is provided in advance and the concrete nails 13 only need to be sequentially driven along the mounting belt 7, it is not necessary to prepare it as an auxiliary material like a conventional metal strip. . In addition, since the mounting belt 7 is inserted into the holding cylinder 6, it can be conveniently handled integrally with the seat body 1. Furthermore, even if the concrete nail 13 is driven, the nail is not rebounded, and the driving is easy and safe.

Further, both sides of the seat body 1 are provided with mounting belts 7.
As a result, the seat body 1 is prevented from loosening on both sides, and the reliability in construction is improved. In addition, the length is usually the inner circumferential surface of the tunnel,
Alternatively, if it is set to 12 m, the spring treatment sheet material A is attached by being distributed to both sides from the center top end, and the attachment work can be performed by one person. In this way, the spring treatment sheet material A is attached to the primary lining concrete wall surface W1 as shown in FIG. In addition, on the attached spring water treatment sheet material A, a white transverse tape 14 (referred to as a measuring line) and a number 15 are attached and displayed at intervals of 100 cm. This is to make it possible to easily confirm whether or not the construction is proceeding in order according to the procedure.

Further, since the elastic member 2 is interposed between the nonwoven fabric 3 on the side of the primary lining concrete wall surface W1 and the sheet body 1 to form the drainage drainage passage H, the primary lining as shown by the chain line in FIG. Waterproof sheet S on the entire surface of the concrete wall W1
After the secondary lining concrete W2 is sprayed through the, even if spring water comes out from the rock bolt 9, the water can be reliably drained through the collecting and draining passage H, and the draining function is not impaired. The elastic member 2 also serves to prevent breakage of the sheet body 1 and the waterproof sheet S by its elastic action.

In the present embodiment, the configuration is shown in which the attachment belts 7 are integrally provided on both sides of the seat body 1, but this is the case where the spring treatment sheet material A is attached in the vertical direction. When the sheet body 1 is mounted in a horizontal direction, that is, in a horizontal direction, the sheet body 1 is formed in a tubular shape, and an elastic member 2 is arranged and fixed inside the sheet body 1 along the longitudinal direction. The object and effect of the present invention can be sufficiently achieved even if the mounting belt 7 is provided only on the side (the side on which the belt is formed).

[0015]

As described above, in the spring treatment sheet material according to the present invention, an elastic member having water permeability is disposed and fixed on one surface side of the sheet body, and the side edge of the sheet body is fixed to the side edge of the sheet body. Since a cylindrical holding cylinder is provided and a mounting belt made of a soft elastic material is inserted into the holding cylinder,
Attaching the spring treatment sheet material to the inner peripheral surface of the tunnel does not require an auxiliary material such as a metal band plate, but only requires driving a concrete nail along the mounting belt as it is, making installation extremely easy and simplified. In addition, work efficiency can be improved. Thereby, there is an effect that it is possible to significantly shorten the construction period and reduce the construction cost.

[Brief description of the drawings]

FIG. 1 is a rear perspective view of a spring treatment sheet material according to the present invention.

FIG. 2 is a sectional plan view of the same.

FIG. 3 is a perspective view showing a state where a spring treatment sheet material is mounted on the inner wall surface of the tunnel.

FIG. 4 is a cross-sectional plan view showing a state where a spring treatment sheet material is mounted on the inner wall surface of the tunnel.

FIG. 5 is a perspective view showing an inner wall surface of the tunnel and a state where a spring treatment sheet material is attached.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sheet main body 2 Elastic member 3 Supporting member (nonwoven fabric) 4 Stapler 6 Holding cylinder part 7 Mounting belt A Spring water treatment sheet material

Claims (4)

[Claims] 1. An elastic member having water permeability is disposed and fixed on one surface side of a belt-shaped sheet main body along a longitudinal direction thereof, and a side edge of the sheet main body is arranged along a longitudinal direction thereof. A spring treatment sheet material, wherein a mounting belt made of a soft elastic material such as synthetic resin is integrally provided. 2. An elastic member having water permeability is disposed and fixed on one surface side of a sheet body formed in a belt shape along a longitudinal direction thereof, and a side edge of the sheet body is arranged along a longitudinal direction thereof. A spring treatment sheet material comprising: a tubular holding cylinder portion provided with a mounting belt made of a soft elastic material such as a synthetic resin. 3. An elastic member having water permeability is disposed and fixed along one side of the sheet body formed in a belt shape along the longitudinal direction thereof, and the elastic member is provided with a water-permeable member attached to one surface of the sheet body. It is attached to a support member, and a cylindrical holding cylinder portion is provided along the longitudinal direction at a side edge of the sheet body, and a mounting belt made of a soft elastic material such as a synthetic resin is inserted into the holding cylinder portion. A spring treatment sheet material characterized by the following. 4. The seat body is formed of a non-water-permeable material, and a mounting belt made of a soft elastic material such as a synthetic resin is integrally provided on both side edges of the sheet body along the longitudinal direction. Or the spring water treatment sheet material according to 2 or 3.