JPH1018787A - Device for pressing water-proof sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the application of a water-proof sheet so as to enhance the working efficiency, and to apply a water-proof sheet with no damage. SOLUTION: A device for pressing a water-proof sheet S against the inside of a tunnel in which primazy lining has been finished, so as to apply the water- proof sheet on the inside of the tunnel, comprises a water-proof sheet support frame having frames having a shape conforming with the upper surface of the inside of the tunnel and spaced from one another in the axial direction of the tunnel, and drive cylinders for elevating this support frame. Rubber tubes 50 adapted to be pressed against the upper surface of the inside of the tunnel when they are inflated by supplying compressed air thereinto, are arranged along the frames 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof sheet pressing device for pressing a waterproof sheet against the inside of a tunnel in order to attach the waterproof sheet to the inside of a tunnel after primary lining.

[0002]

2. Description of the Related Art As a general method for lining a tunnel, a primary lining is performed inside a main shaft excavated in the ground, and a secondary lining is further performed inside the primary lining. At this time, a waterproof sheet is attached to the inside of the primary lining wall to prevent water such as groundwater from entering the tunnel.

[0003] The conventional waterproofing sheet sticking operation is performed by assembling a scaffold inside the tunnel along the inner peripheral surface of the tunnel, and an operator stands on the scaffold and presses the waterproofing sheet by hand. In order to complete the welding, a large number of workers were required, and the physical load on the workers was great. Therefore, in recent years, a method has been adopted in which a pressing frame conforming to the shape of the tunnel is installed inside the tunnel so as to be able to move up and down, and the waterproof sheet is pressed against the inner peripheral surface of the tunnel by the pressing frame.

[0004]

However, if the above-mentioned pressing frame is employed when the primary lining has been performed by the spraying method, the waterproof sheet is pressed against the unevenness of the sprayed concrete surface, particularly the convex portion, and is damaged. There was a fear that a hole would open. In addition, even when the pressing frame installed to be able to ascend and descend inside the tunnel is displaced from the inner peripheral surface of the tunnel, the force for pressing the waterproof sheet is not uniform, and the waterproof sheet may be damaged.

The present invention has been made in view of the above circumstances, and simplifies the work of attaching a waterproof sheet, improves workability, and attaches a waterproof sheet without damaging the waterproof sheet. It is intended to provide a pressing device.

[0006]

According to the first aspect of the present invention, the waterproof sheet pressing device presses the waterproof sheet to the inside of the tunnel after the primary lining in order to attach the waterproof sheet to the inside of the tunnel. The device, a frame having a shape along the inner upper surface of the tunnel, a waterproof sheet support frame disposed a plurality of spaced apart in the axial direction of the tunnel, and an elevating mechanism for vertically moving the waterproof sheet support frame It is characterized by having.

According to a second aspect of the present invention, there is provided a waterproof sheet pressing device which is expanded by supplying gas along a frame of the waterproof sheet pressing device according to the first aspect and is elastically pressed against the inner upper surface of the tunnel. A tubular body made of a material is provided.

According to a third aspect of the present invention, there is provided a waterproof sheet pressing device according to the first or second aspect, wherein the frame in the waterproof sheet pressing device has a shape along the ceiling surface of the tunnel and is supported by a lifting mechanism. A three-way split type of a frame and left and right wing frames each having a shape along both sides adjacent to the ceiling surface of the tunnel and connected to both sides of the central frame and connected to be swingable in the width direction of the tunnel. And a swing mechanism for swinging each of the left and right wing frames.

According to a fourth aspect of the present invention, there is provided a waterproof sheet pressing device according to any one of the first to third aspects, wherein the waterproof sheet supporting frame is raised below the waterproof sheet supporting frame. And a scaffold for attaching a waterproof sheet pressed to the inside upper surface of the tunnel inside the tunnel.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a waterproof sheet pressing device according to the present invention will be described with reference to FIGS.
FIG. 1 shows a waterproof sheet pressing device. The waterproof sheet pressing device includes a waterproof sheet supporting frame 2 for supporting a waterproof sheet S on a carriage 10 which is capable of self-running on a rail 2 laid on a base 1 of a tunnel which has completed primary work.
0, and a drive cylinder (elevating mechanism) 30 for vertically moving the waterproof sheet support frame 20 up and down.

The bogie 10 has a truss structure combining strong steel materials. Wheels 11 and 12 for traveling on the rails 2 are arranged at front and rear ends along the construction direction of the tunnel. Further, a self-propelled device 13 for self-propelling the carriage 10 is attached to the wheel 11 located in the front in the construction direction. The cart 10 also includes a waterproof sheet support frame 2.
A stair-like scaffold 15 for carrying out the work of attaching the waterproof sheet S from below is provided from the ceiling surface side of the tunnel to both sides.

As shown in FIG. 2, the waterproof sheet support frame 20 has a shape along the inner arch surface (upper surface) corresponding to the upper half of the tunnel, and a plurality of waterproof sheet pressing members arranged in the axial direction of the tunnel. Frame 21 is provided. The frame 21 has a central frame 21C having a shape along the ceiling surface of the tunnel, and a shape along the both side surfaces adjacent to the ceiling surface of the tunnel, and is connected to both sides of the central frame 21C so as to extend in the width direction of the tunnel. The left and right wing frames 21 </ b> L and 21 </ b> R are swingably connected and are divided into three parts.

The center frame 2 of the frame 21
1C is fixed to a pair of connecting members 22 parallel to the axial direction of the tunnel, and two elevating cylinders 30, 30 are installed on these connecting members 22, respectively. Further, between the frames 21, the central frame 21C and the left and right wing frames 21L, 21R are integrally fixed by a strip-shaped steel plate 22a disposed in parallel with the connecting member 22.

The drive cylinder 30 has a cylinder portion 31 fixed to an upper part of the carriage 10 and a piston 32 connected to a connecting member 22. The piston 32 is expanded and contracted to move the frame 21 up and down. I can do it.

Center frame 21C and left and right wing frames 21
Hinges 23, 23 are provided at the connection portions with the L, 21R, respectively, and the left and right wing frames 21L, 21R swing about the hinges 23.
A drive cylinder (swing mechanism) 40 for swinging the left and right wing frames 21L, 21R is provided between the left and right wing frames 21L, 21R and the bogie 10.

The drive cylinder 40 includes the left and right wing frames 21.
L and 21R are installed two by two, the cylinder part 41 is swingably connected to the side of the truck 10, and the piston 42 is swingably connected to the left wing frame 21L or the right wing frame 21R. The lifting and lowering of the entire frame 21 by the cylinder 30 is not hindered, and the left and right wing frames 21L and 21R can be rocked by extending and retracting the piston 42.

In a state where the driving cylinders 30 and 40 are shortened, the diameter of the frame 21 is reduced so that the frame 21 is spaced from the inner arch surface of the tunnel at a substantially constant interval. In the extended state,
The frame 21 is widened so as to have a slight gap with the inner arch surface of the tunnel.

As shown in FIG. 3, the frame 21 is made of a T-section steel whose flange surface is fixed to the inside of the opposing tunnel, and the flange surface extends along the longitudinal direction of the frame 21. Rubber tube (tubular body) 50
Are arranged. The rubber tube 50 is used for the carriage 10
The waterproof sheet S placed on the rubber tube 50 is inflated by the compressed air (gas) supplied from the compressed air supply means 60 provided in the above, and is pressed against the inside of the tunnel.

The rubber tube 50 is, as shown in FIG.
Before the supply of compressed air, it is flattened and spread on the flange surface of the frame 21, and is fixed by winding the cowl 51 and the frame 21, which are attached at appropriate intervals, by a rubber band 52. .

Further, the rubber tube 50 is connected to the frame 2
Has become separate from each site of 1, as shown in FIG. 5, the central frame 21C 2 pieces of rubber tube 50C which is divided in the middle _L, 50C _R is, left and right wing frames 21
Rubber tubes 50L and 50R are provided on L and 21R. Then, each rubber tube 50L relay tube 51a, the respective rubber tube 50C _L relay tube 51
b, each rubber tube 50C _R is a relay tube 51c.
Each of the rubber tubes 50R is connected to a relay tube 51d, and these relay tubes 51a, 51b, 51
c and 51d are connected to the four valves 6 via the stop valve 61.
It is connected to 2. Further, the quadruple valve 62 is connected to a compressor 64 via an air regulator 63, and supplies the waterproof sheet S to the inside of the tunnel with an appropriate force by supplying compressed air of the same pressure to each part of the different frames 21. It can be pressed.

In addition, the cart 10 is provided with a chain block 70 for suspending the waterproof sheet S on the cart, a transport cart 80 for transporting the waterproof sheet S on the cart, and the like.

An operation procedure for attaching the waterproof sheet to the inside of the tunnel where the primary work has been completed by using the waterproof sheet pressing device configured as described above will be described. First, with the drive cylinders 30 and 40 shortened and the frame 21 lowered, the waterproof sheet S is placed on the frame 21 and the side edges and the position in the axial direction of the tunnel are roughly aligned with the ceiling surface of the tunnel. Keep it together. Next, as shown in FIG. 6, the drive cylinders 30 and 40 are extended to raise the frame 21 so that the waterproof sheet S approaches the inner arch surface of the tunnel. The frame 21 is fixed with a substantially uniform gap between the frame 21 and the inner arch surface of the tunnel. At this time, the left and right wing frames 21L and 21R do not move symmetrically, but are finely adjusted so as to have an appropriate gap with respect to both side surfaces of the tunnel, and the arrangement is determined. Then, the compressed air supply means is operated to supply compressed air to each rubber tube 50, apply the same pressure to each part, and press the waterproof sheet S against the inner arch surface of the tunnel with an appropriate force. For the waterproof sheet S pressed inside the tunnel by the rubber tube 50, an operator stands on the scaffold 15 provided on the carriage 10 and welds the waterproof sheet S. In addition, about the inside lower surface of a tunnel, it shall implement before or after the said work suitably.

[0023] Since the attaching operation for one span of the waterproof sheet S is completed as described above, this operation is sequentially performed in the construction direction of the tunnel.

With the waterproof sheet pressing device configured as described above, the waterproof sheet S is placed on the waterproof sheet support frame 20 so that the waterproof sheet S conforms to the shape of the inner arch surface of the tunnel. Since the waterproof sheet S is lifted together with the waterproof sheet supporting frame 20 to be close to the inside of the tunnel, the work of pressing the waterproof sheet relying on humans as in the past is eliminated, the number of workers is reduced, and the work is simplified. can do.

When the waterproof sheet support frame 20 is lowered, the left and right wing frames 21L and 21R are swung inward in the width direction of the tunnel to provide a space between the frame 21 and the inner arch surface of the tunnel to provide waterproofing. When the seat support frame 20 is raised, the left and right wing frames 21L and 21R are swung outward in the width direction of the tunnel to bring the frame 21 closer to the inner arch surface of the tunnel.
By changing the shape of 1, the waterproof sheet support frame can be raised and lowered in a limited space in the tunnel.

By changing the angles of the left and right wing frames 21L, 21R with respect to the center frame 21C,
Absorbs the misalignment between the inner side surface of the tunnel and the frame 21 together with the planar yawing, traversing and cross-sectional swing,
The pressure contact of the waterproof sheet S can be performed with higher accuracy.

Further, since the waterproof sheet S placed on the waterproof sheet support frame 20 is softly pressed against the inside of the tunnel by expanding the rubber tube 50, even if there is unevenness inside the tunnel, the unevenness is absorbed. Thus, the waterproof sheet can be pressed with a uniform force, and the waterproof sheet S can be prevented from being damaged.

Since the worker can perform the work of attaching the waterproof sheet S on the scaffold 15, the work can be performed easily and the physical load on the worker can be reduced.

The waterproof sheet pressing device according to the present invention is not limited to the one shown in the present embodiment. For example, the waterproof sheet supporting frame can be enlarged in accordance with the size of the target waterproof sheet. Specification changes may be made.

[0030]

As described above, according to the waterproof sheet pressing device of the first aspect, a plurality of frames having a shape along the inner upper surface of the tunnel are arranged at a distance from each other in the axial direction of the tunnel. Equipped with a waterproof sheet support frame and an elevating mechanism that raises and lowers the waterproof sheet support frame in the vertical direction. By mounting the waterproof sheet on the waterproof sheet support frame, this waterproof sheet corresponds to the shape of the inside upper surface of the tunnel The waterproof sheet can be brought close to the inside upper surface of the tunnel by raising the waterproof sheet support frame as it is, eliminating the need to manually press the waterproof sheet as in the past and reducing the number of workers In addition, the simplification of the operation can be realized, and the workability of the operation of attaching the waterproof sheet can be improved.

According to the second aspect of the present invention, a tubular body made of an elastic material is provided along the frame to expand by supplying gas and to be pressed against the inner upper surface of the tunnel. Since the waterproof sheet placed on the waterproof sheet support frame is softly pressed against the inside of the tunnel by expanding this tubular body, even if there is unevenness inside the tunnel, it absorbs this unevenness and makes the waterproof sheet uniform It can be pressed with an appropriate force, and the breakage of the waterproof sheet can be prevented.

According to the third aspect of the present invention, the frame is pivotally moved in the width direction of the tunnel by being connected to the central frame supported by the lifting mechanism and to both sides of the central frame. The left and right wing frames are connected to each other as possible, and when the tarpaulin support frame is lowered, the left and right wing frames are swung inward in the width direction of the tunnel, and the frame and the inner upper surface of the tunnel are A space is provided between them, and when the waterproof sheet support frame is raised, the left and right wing frames are rocked outward in the width direction of the tunnel to bring the frame close to the upper surface inside the tunnel, so that the waterproof sheet support frame can be raised and lowered. By changing the angle of the left and right wing frames with respect to the center frame without being hindered by the shape of the frame,
In addition to the lateral feed and the cross-sectional swing, the misalignment between the inner side surface of the tunnel and the frame is absorbed, and the waterproof sheet can be pressed with higher accuracy.

According to the waterproof sheet pressing device of the fourth aspect, the scaffold is provided below the waterproof sheet support frame, and the worker can perform the work of attaching the waterproof sheet on the scaffold. The work can be performed easily, and the physical load on the worker can be reduced.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a waterproof sheet pressing device according to the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is an expanded plan view of a waterproof sheet support frame in FIG. 2;

4 is a sectional view taken along line IV-IV in FIG. 3;

FIG. 5 is a schematic explanatory view showing a supply path of compressed air to a rubber tube.

FIG. 6 is a sectional view showing a procedure for attaching a waterproof sheet to a tunnel using the waterproof sheet pressing device shown in FIG. 2;

[Explanation of symbols]

 Reference Signs List 10 cart 15 scaffolding 20 tarpaulin support frame 21 frame 21C center frame 21L, 21R left and right wing frames 30 drive cylinder (elevating mechanism) 40 drive cylinder (oscillation mechanism) 50 rubber tube (tubular body) S waterproof sheet

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yoshitoshi Nikaido 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation (72) Inventor Takeshi Tsuruya 209 Ogibu, Takaoka-shi, Toyama Pref. 72) Inventor Shigeo Ebitani 209 Ogifu, Takaoka City, Toyama Prefecture Inside Saga Industry Co., Ltd.

Claims (4)

[Claims] 1. A waterproof sheet pressing device for pressing a waterproof sheet against the inside of a tunnel in order to attach the waterproof sheet to the inside of a tunnel after a primary lining, and having a shape along an inner upper surface of the tunnel. A waterproof sheet pressing device, characterized in that the frame comprises: a waterproof sheet support frame disposed at a plurality of spaces in the axial direction of the tunnel; and a lifting mechanism for vertically moving the waterproof sheet support frame. 2. The waterproof sheet pressing device according to claim 1, wherein a tubular body made of an elastic material is provided along the frame so as to expand by supplying gas and to be pressed against an upper surface inside the tunnel. A waterproof sheet pressing device characterized by being carried out. 3. The waterproof sheet pressing device according to claim 1, wherein the frame has a shape along the ceiling surface of the tunnel and is supported on the center frame supported by the elevating mechanism and the ceiling surface of the tunnel. The left and right wings are of a three-part type having left and right wing frames each having a shape along the adjacent both side surfaces and connected to both sides of the central frame and connected so as to swing in the width direction of the tunnel. A waterproof sheet pressing device comprising a swing mechanism for swinging each frame. 4. The waterproof sheet pressing device according to claim 1, wherein the waterproof sheet supporting frame is lifted below the waterproof sheet supporting frame and pressed against the inner upper surface of the tunnel. And a scaffold for attaching the waterproof sheet to the inside of the tunnel.