JPH0685496U - Composite tarpaulin - Google Patents

Abstract

(57) [Summary] [Structure] A composite waterproof sheet, which is disposed between a primary lining concrete and a secondary lining concrete of a tunnel, and which is a laminate of a water-impermeable sheet and a water-permeable sheet. And both end portions of the water-permeable sheet and the water-permeable sheet are in a free state, and both end portions of the water-impermeable sheet and the water-permeable sheet are free ends, and at least one water-permeable sheet side of the water-impermeable sheet has a free end portion. In the surface, a composite waterproof sheet is characterized in that a seat plate piece is fixed to a location corresponding to a location where a fixing member such as a nail is driven. [Effect] According to the composite waterproof sheet of the present invention, it can be easily and surely fixed to the primary lining concrete of the tunnel.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention is a composite waterproof sheet that is arranged between the primary lining concrete and the secondary lining concrete of a tunnel to prevent the spring water from the primary lining concrete side from leaching to the secondary lining concrete side. Regarding

[0002]

[Prior art]

 Conventionally, primary lining concrete is placed in the tunnel, a waterproof sheet is placed on the primary lining concrete, and then secondary lining concrete is placed on the waterproof sheet. In this case, the waterproof sheet is provided for the purpose of preventing the spring water from the primary lining concrete side from leaching out to the secondary lining concrete side. A composite waterproof sheet is known in which a water-permeable sheet such as a woven fabric or a non-woven fabric is laminated on the entire one surface of the water-impermeable sheet.

When such a composite waterproof sheet is applied to the primary lining concrete of a tunnel, first, the waterproof sheet is fixed to the primary lining concrete with the water permeable sheet side of the waterproof sheet facing the primary lining concrete. After that, the edges of the impermeable sheets are joined together in a liquid-tight manner. Due to the function of the waterproof sheet, no liquid leakage is allowed in the impermeable sheet, so the waterproof sheet maintains the waterproofness of the impermeable sheet. Various methods have been adopted as a method of fixing the.

For example, there is known a waterproof sheet in which a heat-fusible substance layer is formed at a position corresponding to a driving position of a fixing member such as a nail on the exposed surface of a water-impermeable sheet (Japanese Patent Laid-Open No. 63-171999). In this waterproof sheet, a fixing member such as a nail is driven from the heat-fusible substance layer through this layer into the primary lining concrete to fix the waterproof sheet and to melt the heat-fusible substance. It fills the gap that occurs when the fixing member is driven with a heat-fusible substance, and seals the head side of the fixing member.

Alternatively, a composite waterproof sheet in which a water-impermeable sheet and a water-permeable sheet are formed in a free state at the end is used, and when fixing the composite waterproof sheet to the primary lining concrete, As shown in FIG. 4, while applying a slender metal pad plate a to the free end portion of the water-permeable sheet c of the waterproof sheet b which is in contact with the primary lining concrete, the strip plate a is sequentially contacted at predetermined intervals from above the plate a. The nail d is driven into the first end using a driving device, and the backing plate a presses the free end of the water-permeable sheet c to fix the water-permeable sheet c to the primary lining concrete and at the same time to cover the waterproof sheet b. It is fixed to work concrete, and then the free ends of the impermeable sheet e are liquid-tightly joined together.

[0006]

[Problems to be solved by the device]

 However, the former waterproof sheet requires a work of melting the heat-fusible substance layer after driving a fixing member such as a nail, and the fixing work is troublesome.

In the latter waterproof sheet, a separate pad plate is prepared, and the pad plate is abutted against the primary lining concrete while the water-permeable sheet is being abutted against the water-permeable sheet. The work of driving the water permeable sheet is necessary, and both the water permeable sheet and the backing plate need to be pressed against the primary lining concrete, which makes the work of fixing the water permeable sheet troublesome.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a composite tarpaulin that can be reliably fixed to primary lining concrete with a simple operation and is easily fixed. To do.

[0009]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a composite waterproof sheet in which a water-impermeable sheet and a water-permeable sheet are laminated between a primary lining concrete and a secondary lining concrete of a tunnel. Both end portions of the water-permeable sheet and the water-permeable sheet are set in a free state, and both end portions of the water-impermeable sheet and the water-permeable sheet are set as free ends. This is a composite waterproof sheet characterized in that a seat plate piece is fixed to a portion corresponding to a fixing member driving portion such as a nail on the surface of the flexible sheet.

In this case, it is also possible to connect the seat plate piece to the exposed surface of the water-permeable sheet at a location corresponding to the location where a fixing member such as a nail is driven, through a flexible connecting member.

[0011]

[Action]

 The composite tarpaulin of the present invention is disposed between the primary lining concrete of the tunnel and the secondary lining concrete, and is a laminate of a water impermeable sheet and a water permeable sheet. When fixing to the lining concrete, first place the water-permeable sheet on the primary lining concrete so that the impermeable sheet is exposed. With this arrangement, the seat plate piece is arranged on the exposed surface of the water-permeable sheet at a position corresponding to the fixing member driving position, and the end portions of the water-impermeable sheet and the water-permeable sheet are in a free state. The seat plate piece is exposed, and nails and the like are driven into the primary lining concrete from the fixing member driving machine through the seat plate piece and the water permeable sheet. Then, the head of the nail presses the seat plate piece toward the primary lining concrete side, the seat plate piece is fixed to the primary lining concrete, and at the same time, the seat plate piece presses the water permeable sheet, and One end side of can be fixed to the primary lining concrete.

[0012] In this case, the other free end of the tarpaulin can be fixed to the primary lining concrete by fixing the seat plate piece like the one end, or if the seat plate piece is not provided, These two water-permeable sheet free ends are placed when the free end of the water-permeable sheet without the seat plate pieces is overlaid on the free end of the water-permeable sheet to which the seat plate piece of the above waterproof sheet is fixed and the fixing member is driven. It is possible to fix the water-permeable sheets of the two waterproof sheets at the same time by penetrating through.

Therefore, as compared with the case where a separate pad plate is conventionally used, it is not necessary to hold the pad plate and it is not necessary to use an elongated pad plate in a narrow tunnel, so that the fixing work is easy and Since the driving position of the fixing member is clear, the driving can be surely performed at a predetermined position, and variations due to individual differences in the driving position can be eliminated.

Further, the fixing of the composite waterproof sheet is carried out at the end thereof, but when it is necessary to fix it to the primary lining concrete at the intermediate portion of the composite waterproof sheet, it is necessary to fix the composite waterproof sheet on the exposed surface of the water permeable sheet. It is preferable to use a composite tarpaulin in which a seat plate piece is connected to a place corresponding to a fixing member driving place such as a nail through a bendable connecting member, and the seat plate piece is brought into contact with the primary lining concrete ( In this case, the water-permeable sheet is not present.) By fixing the seat plate piece to the primary lining concrete by driving a nail or the like into the primary lining concrete through the seat plate piece with a fixing member driving machine, The water-permeable sheet can be fixed to the primary lining concrete via the flexible connecting member, and can be fixed to the primary lining concrete at the intermediate portion of the composite waterproof sheet. In this case, since the seat plate piece is connected to the water-permeable sheet by the flexible connecting member, the seat plate piece can be easily brought into contact with the primary lining concrete.

[0015]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a composite waterproof sheet of the present invention. This composite waterproof sheet 1 is a laminate of a water impermeable sheet 2 and a water permeable sheet 3. These water impermeable sheet 2 and water permeable sheet 3 Both ends of each of them are formed in a free state and are defined as free ends 2a, 2a ', 3a, 3a', respectively, and one water-permeable sheet free end 3a of the impermeable sheet 2 side. A plurality of disk-shaped metal seat plate pieces 4 are adhered to the surface of the surface of the surface of the surface of the surface of the surface of the sheet, corresponding to the positions where the fixing members are driven, and the other water-permeable sheet free end 3a '(not shown). The seat plate piece 4 is not provided in FIG.

When arranging the composite waterproof sheet 1 on the primary lining concrete of the tunnel, the impermeable sheet free end 2a of the composite waterproof sheet 1 fixed to the primary lining concrete and the primary lining concrete The water-impermeable sheet free end portion 2a 'of another composite waterproof sheet 1'fixed to concrete is sequentially connected in a liquid-tight manner.

When fixing the present composite waterproof sheet 1 and the other present composite waterproof sheet 1 ′ to the primary lining concrete, as shown in FIG. 2, the primary lining concrete 5 is applied with the water permeable sheets 3, 3 ′. The water-impermeable sheets 2 and 2 ′ are arranged in contact with each other so as to be exposed in the tunnel, and the water-permeable sheet free end 3 a provided with the seat plate piece 4 of the one composite waterproof sheet 1 is connected to the other composite waterproof sheet 1. The waterproof sheet 1'is superposed on the water-permeable sheet free end portion 3a 'without the seat plate piece. With this arrangement, the seat plate piece 4 is in a state of being covered with the water-impermeable sheet free ends 2a, 2a ', but by flipping these water-impermeable sheet free ends 2a, 2a', or by tunneling. When fixed to the upper part of the sheet, the water-impermeable sheet's own weight causes the water-impermeable sheet free ends 2a and 2a 'to hang down, and the seat plate piece 4 is exposed to the inner surface of the tunnel.

Then, using a fixing member driving machine, the fixing member 6 such as a nail is passed through the seat plate piece 4, the seat plate piece 4, both the water permeable sheet free ends 3a and 3a ′, and the primary lining concrete 5 is formed. The head 6a of the fixing member is driven until it hits the seat plate piece 4. As a result, the seat plate piece 4 pressed by the head 6a of the fixing member 6 presses the free end portions 3a, 3a 'of both water-permeable sheets against the primary lining concrete, and one end portions of both water-permeable sheets 3, 3'are It is fixed to the primary lining concrete 5, and by performing such a procedure, both ends of the composite waterproof sheet 1 of the present invention can be fixed to the primary lining concrete 5.

In this way, the composite waterproof sheet 1 can be fixed at both ends thereof to the primary lining concrete, but if it is fixed to the primary lining concrete at an intermediate point if necessary, as shown in FIG. One end in the width direction of the tape-like connecting member 7 made of synthetic resin is adhered to a position corresponding to the driving position of a fixing member such as a nail on the exposed surface of the middle part of the water-permeable sheet 3, and the other end is made the free end 7a. At the same time, a composite waterproof sheet 1 ″ can be formed by adhering a plurality of disc-shaped metal seat plate pieces 4 to the free end 7a, and since the tape-like connecting member 7 has flexibility, the seat plate piece 4 is formed. Is flexibly connected to the water-permeable sheet 3.

When fixing such a composite waterproof sheet 1 ″ to the primary lining concrete, one end is fixed in the same manner as described above, and the seat plate piece 4 connected to the water permeable sheet in the middle part is further fixed to the primary lining concrete. The seat plate piece 4 is attached by driving a fixing member such as a nail from above the seat plate piece 4 with the fixing member driving device while fixing the seat plate piece 4 to the primary lining concrete. The intermediate portion of the water permeable sheet 3 can be attached to the primary lining concrete via the linear connecting member 7.

The composite waterproof sheet of the present invention is not limited to the above example, the seat plate piece may be made of synthetic resin, or a hole through which the fixing member is inserted may be pre-drilled. It may of course be provided on the free ends of the water-permeable sheets at both ends, and the connecting member may be in the form of a tongue or a string that is large enough to fix individual seat plate pieces, instead of being in the form of tape. It may be present, and other various changes can be made without departing from the gist of the present invention.

[0022]

[Effect of device]

 According to the composite waterproof sheet of the present invention, it can be easily and reliably fixed to the primary lining concrete of the tunnel.

[Brief description of drawings]

FIG. 1 is a partial perspective view showing an example of a composite waterproof sheet of the present invention.

FIG. 2 is a partial cross-sectional view showing a state in which the composite waterproof sheet of the present invention is fixed to primary lining concrete.

FIG. 3 is a partial cross-sectional view showing another embodiment of the composite waterproof sheet of the present invention.

FIG. 4 is a partial perspective view showing a state in which a conventional composite waterproof sheet is fixed to primary lining concrete.

[Explanation of symbols]

 1 composite waterproof sheet 2 water impermeable sheet 2a free end 3 water permeable sheet 3a free end 4 seat plate piece 5 primary lining concrete 6 fixing member 7 connecting member

Claims (2)

[Scope of utility model registration request] 1. A composite waterproof sheet, which is disposed between a primary lining concrete and a secondary lining concrete of a tunnel, and is a laminate of a water impermeable sheet and a water permeable sheet, wherein the water impermeable sheet and the water permeable sheet are provided. Both side ends of the water-impermeable sheet and the water-permeable sheet are free ends, and both ends of the water-permeable sheet are free ends, and at least one of the water-permeable sheet free ends has a nail on the surface of the water-impermeable sheet side. A composite waterproof sheet characterized in that a seat plate piece is fixed to a position corresponding to a fixing member driving position such as. 2. The composite waterproof sheet according to claim 1, wherein a seat plate piece is connected via a bendable connecting member to a position corresponding to a fixing member driving position such as a nail on the exposed surface of the water permeable sheet.