JPH0529280Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention is used to remove water from the ground by attaching it to the lower end of a waterproof sheet pasted on the surface of the primary lining when constructing a tunnel using the NATM construction method. The present invention relates to a waterproof sheet waste treatment device for treating running water.

[Conventional technology]

Generally, when constructing a tunnel using the NATM construction method, first a primary lining of concrete is constructed by spraying etc. on the surface of the ground excavated in the shape of an arch, and a waterproof sheet is pasted on the surface of the primary lining. A perforated pipe made of hard vinyl chloride or a coiled or loofah-shaped drain material wrapped around a non-woven fabric as a filter material is wrapped around the bottom end of the sheet, and a secondary lining is applied after the drainage treatment is carried out. Even if there is spring water from the ground after the secondary lining is placed, the water is allowed to flow into the perforated pipe, and from the perforated pipe through a T-pipe etc., it is discharged from the drain discharge pipe. By discharging water to the outside, water leakage into the tunnel is prevented.

In addition, tunnels usually have side gutters on both sides of the bottom, and the road is paved to match the top of these gutters.Depending on the ground condition, a secondary covering may be required to ensure the strength of the tunnel. The lower ends of both side walls of the pavement are connected by inverts, gutters are placed on the inverts, and paving is carried out in the same manner as described above.

Therefore, when actually constructing a tunnel, the primary lining is constructed and a waterproof sheet is pasted on its surface, and then the secondary lining is constructed, or an invert is constructed and the secondary lining is constructed. The lower end of the side wall is connected to the invert, and after the secondary lining is installed, a gutter is installed on the bottom of the tunnel or on the invert, and the road is paved. Conventionally, after pasting the waterproof sheet, a drain discharge pipe made of a straight, non-flexible pipe such as a hard PVC pipe was connected to the drainage part of the waterproof sheet, and the tip of the drain discharge pipe was connected to the center drain. I try to drain it.

[Problem that the invention attempts to solve]

However, in general, the surface of the primary lining is not smooth and has many irregularities, so the above method not only takes time and effort during construction, but also causes the treated part to not blend into the surface of the primary lining. When concrete is poured for the secondary lining, the lower edge of the waterproof sheet is peeled off by the impact of the concrete, and the concrete gets between the drain discharge pipe and the primary lining, causing the secondary lining to be damaged. After construction, there is a problem in that spring water, etc. that flows down from the top of the tarpaulin sheet does not flow into the discharge pipe, but enters the secondary lining and leaks onto its surface.

In addition, with the conventional method of installing the drain discharge pipe described above, after constructing the secondary lining, the drain discharge pipe becomes obstructive when installing gutters on the bottom of the tunnel or on the invert, or when paving the road. In many cases, it is not possible to install sloped gutters, and in such cases,
The bottom of the side gutter is ground down to allow the drain pipe to pass through, but this not only reduces the strength of the gutter, but also damages the gutter and causes water leakage.
There is also the problem that the drain pipes may be damaged, causing water leakage, and there is a risk of accidents such as the road surface, which has been paved to match the top of the gutter, being lifted up by the water pressure. These problems are difficult to solve because the contractor who constructs the secondary lining of the tunnel is different from the contractor who installs the gutter and performs the pavement construction.

[Means for solving problems]

The present invention was made with the purpose of providing a waste material for a waterproof sheet that can solve the problems of the prior art as described above. A filter material made of nonwoven fabric, woven fabric, knitted fabric, etc. is joined to the lower end of the upper mounting member, and the upper end of the lower mounting member is watertightly attached to the upper part of the filter material mounting portion at the bottom of the upper mounting member. The upper end of the upper mounting member of the waterproof sheet waste treatment material, which consists of a waste treatment material main body consisting of a waste treatment material body, and a drain material made of a water-permeable strip material such as a hard vinyl chloride perforated pipe, a coil material, a loofah-shaped material, etc. The part is watertightly fixed to the lower end of the waterproof sheet attached to the surface of the primary lining of the tunnel, and the lower half of the drain material is wrapped around the lower back side of the upper mounting member, and the filter material is attached to the bottom of the drain material. The waterproof sheet is arranged above and its end is attached to the back surface of the upper mounting member, and the lower mounting member is fixed and attached to the bottom of the tunnel, and has flexibility at an appropriate location where it contacts the drain material of the waterproof sheet. The drain discharge pipe is watertightly connected, the drain discharge pipe is fixed by running over the bottom of the tunnel or an invert provided at the bottom of the tunnel, and its tip is connected to the center drain. It is something.

[Effect of invention]

That is, in the present invention, the waterproof sheet that is attached to the surface of the tunnel as a primary lining is not attached to the lowest part of the tunnel, but is attached to 1 to 2 meters above the bottom of the tunnel, and the upper part is attached to the lower end of the waterproof sheet. The upper end of the mounting member is watertightly joined, and the lower half of the drain material made of a water-permeable strip such as a hard PVC perforated pipe, a coil material, or a loofah-like material is wrapped around the back side of the lower part of the mounting member. A filter material is arranged at the bottom end of the tunnel, and a filter material connected to the lower end of the upper mounting member is arranged above the drain material, and the end of the filter material is attached to the back surface of the upper mounting member. On the other hand, a lower mounting member whose upper end is watertightly attached to the lower part of the surface side of the upper mounting member is fixed to the bottom of the tunnel, and a flexible portion is provided on the outer side of the upper mounting member in contact with the drain material. By fixing the drain discharge pipe by running it over the bottom of the tunnel or over an invert installed at the bottom of the tunnel, and by connecting its tip to the center drain, if there is spring water in the ground, the water will drain out. After taking steps to prevent leakage into the tunnel, we constructed a secondary lining, and then installed side gutters.
When constructing road pavement, it is possible to easily construct tunnels without causing the problems of the prior art, and it also prevents water leakage in the completed tunnels.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

A is the ground excavated into a tunnel shape, B is the ground A
This is a primary lining formed by spraying concrete onto the surface of the primary lining B, and a waterproof sheet C is attached to the surface of the primary lining B, leaving about 2 m below it.

1 is an upper mounting member made of a waterproof sheet whose upper end is to be joined to the lower end of the waterproof sheet C;
2 is a filter material made of non-woven fabric, woven fabric, knitted fabric, etc. that is joined to the lower end of the upper mounting member 1; 3 is a lower mounting member whose upper end is watertightly mounted slightly above the lower end of the upper mounting member 1; 4 1 is a locking member made of a surface fastener fixed laterally on the back surface of the upper mounting member 1, and 1 to 4 above constitute the waste treatment material main body D.

5 is a drain member made of a hard vinyl chloride perforated pipe.

Although a flat waterproof sheet may be used for the upper mounting member 1, projections 1a may be provided on the back surface in the vertical direction at appropriate intervals. This is convenient because it not only increases the strength but also allows water to flow easily. Further, the lower mounting member 3 is usually made of a flat waterproof sheet, and the joint with the upper mounting member 1 is made watertight by welding or the like to prevent water from leaking from the joint. On the other hand, the lower end of the upper mounting member 1 and the filter material 2
The joints shall be integrally and firmly joined by means such as welding or sewing. Further, the locking member 4 is not limited to a surface fastener, but may be any other material as long as it can securely lock the filter material 2, and the drain material 5 may be made of hard vinyl chloride material as described above. A hole tube may be used, but a hard loofah-like or coil-like strip material that allows water to enter inside may also be used.

The waste treatment material configured as described above is
The upper end of the upper mounting member 1 is fixed 6 by welding or double-sided adhesive tape to the lower end of the waterproof sheet C attached to the surface of the primary lining B constructed in 1 to the back side to hold the lower half of the drain member 5, the filter material 2 is also rolled in at the same time, and the end back surface of the filter material 2 is held by the locking member 4.
After the drain material 5 is positioned at the bottom end of the ground A, the lower mounting member 3 is fixed to the bottom of the ground A with a presser foot 7 and a concrete nail 8. In this state, even if water flows from the ground A through the primary lining B, this water will flow through the waterproof sheet C, pass through the filter material 2,
It passes through the drain material 5 and is discharged to the outside.

That is, in the figure, E is an invert provided at the bottom of the tunnel, F is a center drain, and 9 is a drain discharge pipe made of the same material as the upper mounting member 1, and the part of the upper mounting member 1 that contacts the drain material 5. are integrally and watertightly joined at appropriate locations,
After the end-of-stream treatment material D is installed, a coil material 10 is inserted into it to form a flexible bellows tube shape, and this is fixed by extending over the invert E, and its tip side is centered. By inserting and connecting to the drain F, water flowing from the ground A through the primary lining B passes through the filter material 2, the drain material 5, and flows into the drain discharge pipe 9, and then flows into the center drain. It is discharged to F.

Therefore, if the secondary lining concrete is poured under the above conditions, even if there is a considerable gap between the primary lining B and the waterproof sheet C, the concrete will be able to maintain the gap between the discharge pipe and the primary lining. The secondary lining J can be formed without getting into the drain, and the drain discharge pipe 9 will get in the way of installing the side gutter K when constructing the side gutter K and paved road L after the secondary lining is constructed. All of the above-mentioned problems that conventionally occurred due to straight pipes can be solved.

Generally, when pouring concrete for secondary lining J, the impact from the bottom of the tunnel to a height of about 2 m is quite large, but the upper mounting member 1 is made of a resin sheet with high impact resistance and wear resistance. If you use it, you can withstand it.

[Effect of idea]

The present invention is as described above, and since the waste treatment material is composed of the waste treatment material main body, which is an upper mounting member, a filter material, and a lower attachment member joined to each other, and a drain material, it is easy to manufacture and transport. Also, when installing it, just connect the top end of the upper mounting member to the bottom end of the waterproof sheet that is pasted on the surface of the primary lining, leaving 1 to 2 meters from the bottom, and the rest is easy. Since the work can be done by almost manual labor, it is easy to work, and it is possible to perform safe drainage treatment with high waterproofing effect.Furthermore, the upper mounting member has flexibility at appropriate points in contact with the drain material. After installing the wastewater treatment material, the drain discharge pipe is fixed by extending over the bottom of the tunnel or the invert, and its tip side is connected to the center drain. Since the drain discharge pipe does not get in the way when installing the side gutter after secondary lining construction, the installation work and finishing work such as road paving can be easily and reliably completed at a low construction cost.

[Brief explanation of drawings]

FIG. 1 is a perspective view from the back side of an example of the waste treatment material, and FIG. 2 is a sectional view of the device in which the present invention is applied. A... Earth, B... Primary lining, C... Waterproof sheet, D... Final treatment material body, E... Invert,
F...Center drain, K...Gutter, L...Paved road, J...Secondary lining, 1...Top mounting member, 2
...Filter material, 3...Lower mounting member, 4...
...Locking member, 5... Drain material, 9... Drain discharge pipe, 10... Coil material.

Claims (1)

[Scope of utility model registration request] A filter material made of non-woven fabric, woven fabric, knitted fabric, etc. is bonded to the lower end of an upper mounting member of an appropriate width and length made of a waterproof sheet, and a lower portion is attached to the upper part of the filter material mounting portion at the lower part of the upper mounting member. The flow end of a waterproof sheet consisting of a waste water treatment material main body which is watertightly attached to the upper end of the mounting member, and a drain material made of a water permeable strip material such as a hard PVC perforated pipe, coil material, loofah shaped material, etc. The upper end of the upper mounting member of the treated material is watertightly fixed to the lower end of the waterproof sheet attached to the surface of the primary lining of the tunnel, and the lower half of the drain material is wrapped around the lower back side of the upper mounting member. At the same time, the filter material is arranged above the drain material, and its end is attached to the back surface of the upper mounting member, and the lower mounting member is fixed and attached to the bottom of the tunnel, and is in contact with the drain material of the upper mounting member. A flexible drain discharge pipe is watertightly connected to an appropriate location, and the drain discharge pipe is fixed by running over the bottom of the tunnel or an invert provided at the bottom of the tunnel, and its tip is connected to the center drain. A waterproof sheet waste treatment device characterized by: