JPH03180699A - Spring water processing material - Google Patents

Abstract

PURPOSE:To improve the efficiency of collection of spring water by laminating a liquid permeating sheet to the one surface of each of hollow netty fabrics continuously arranged in juxtaposition and a cutoff sheet on the other surface thereof, and disposing the liquid permeating sheet such that the sheet is positioned on the spring water side of a tunnel. CONSTITUTION:Through-holes 2 are continuously formed in juxtaposition in a fabric to form a hollow netty fabric 1 made of synthetic resin fibers. A cutoff sheet 3, e.g. polyvinyl chloride sheet, is integrally laminated on the one surface of the fabric 1. A liquid permeable sheet 4, e.g. synthetic non-woven cloth, is integrally laminated on the other surface of the fabric 1 to form a spring water processing material. The spring water processing material is located between a spray concrete layer 6 and a lining concrete layer 7 such that the sheet 4 makes contact with the layer 6 side. Water leaking through the layer 6 is collected in the holes 2 and drained through a center drain 8. This constitution prevents leakage of water through the inner wall of a tunnel with high efficiency and simplifies execution of a work.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a spring water treatment material capable of treating spring water from tunnels and open side walls.

<Conventional technology> Conventionally, in order to treat spring water on the open side walls of tunnels, roads, etc., shotcrete was applied to the entire wall surface of the excavated tunnel, etc., and a stopper was placed on top of this shotcrete layer. A water sheet is placed, and a concrete lining layer is placed on top of the water stop sheet, and the spring water flowing down along the side of the stop sheet is collected into a center drain buried in the center of the bottom of the tunnel. It was being discharged outside.

<Problems to be Solved by the Invention> However, in the spring water treatment structure configured as described above, the spring water generated from the wall surface of the tunnel etc. flows down along the side of the water stop sheet, so the flowing water flows down the wall surface of the tunnel. There were problems such as gradual erosion and destruction of the shotcrete layer provided on the wall surface.

Recently, a construction method has also been implemented in which water collection and drainage mats in the form of loofahs made of non-woven glass wool or the like are buried in the walls of tunnels, etc., but when this type of mat is used, the construction The process becomes complicated, construction costs increase, and if these water collection and drainage mats are used for a long period of time,
There were problems such as clogging.

The spring water treatment material according to the present invention relates to a completely new technology developed in view of these conventional problems.

Means for Solving the Problems> The present invention is a technology that fundamentally improves the above-mentioned conventional problems. A liquid permeable sheet is integrally laminated on the hollow reticulated fabric, and a water stop sheet is integrally laminated on the other side of the hollow reticulated fabric.

Function> As mentioned above, the spring water treatment material according to the present invention has a liquid permeable sheet integrally laminated on one side of the hollow reticulated fabric, so that the spring water is treated so that the liquid permeable sheet is on the wall side of the tunnel etc. When the treatment material is installed, spring water leaking from the wall surface of a tunnel or the like can be very efficiently transmitted through the hollow reticulated fabric and collected over the entire surface of the liquid permeable sheet.

Therefore, this can prevent spring water leaking from the wall surface of a tunnel or the like from flowing down the wall surface and gradually corroding the wall surface.

In addition, since a large number of through holes are continuously arranged inside the hollow reticulated fabric, the water collected inside the fabric is drained through the liquid permeable sheet and the entire side surface of the hollow reticulated fabric. It can be smoothly discharged to the outside through the .

As mentioned above, the spring water treatment material according to the present invention has a liquid-permeable sheet such as a nonwoven fabric and a water-stop sheet such as a plastic sheet laminated on the side surface of the hollow net-like fabric, so that the entire material is extremely flexible. It can be stretched as it is, adapting it to uneven surfaces such as tunnels, etc., and can be used sufficiently even when the wall surface changes suddenly or for a long period of time.

Furthermore, since the through-holes provided inside the above-mentioned hollow reticular fabric are formed in a fabric made of a combination of synthetic resin fibers, they have elasticity, strength, and restoring force, so they can be easily used inside the tunnel. Even if a large amount of weight is applied by laying a concrete lining layer on the side of the concrete after it has been laid, or even if it is laid for a long time and the weight is applied for a long time, it will be able to withstand such IT. I can do it.

<Example> Hereinafter, an example of the spring water treatment material according to the present invention will be specifically described with reference to the drawings.

FIG. 1 is a perspective explanatory view showing an example of the spring water treatment material according to the present invention, FIG. A cross-sectional view, FIG. 4 is a perspective explanatory view of the spring water treatment material on the other side, and FIG. 5 is a cross-sectional explanatory view showing an example of use of this spring water treatment material.

In Fig. 2, l is a hollow net-like fabric, which is woven by combining synthetic resin fibers with low heat shrinkability and synthetic resin fibers with high heat shrinkage as warp and weft threads in the vertical and horizontal directions. , by heat treatment at a temperature of 40 to 150° C. for about 10 minutes to 3 hours. This hollow reticulated fabric l is produced by heat-treating the fabric having the above-mentioned structure to greatly shrink the synthetic resin fibers with high heat shrinkability, thereby bending the synthetic resin fibers with low heat shrinkability into a loop wave shape. Hollow through-holes 2 made of synthetic resin fibers are formed in series and in parallel in the interior thereof.

Next, in FIGS. 1 and 3, reference numeral 3 denotes a water stop sheet, which is integrally laminated on one side of the hollow reticulated fabric 1.

When laminating and bonding this IE water receipt 3 to the hollow reticulated fabric 1, a waterproof material such as liquid foam material, latex, thermoplastic elastomer, etc. is injected into one side of the hollow reticulated fabric 1, and then the waterproof By drying the material, the foam can be hardened and bonded together.

Methods for curing the waterproof material listed in L include foaming and hardening at room temperature by mixing two liquids, foaming and hardening during heat drying, and furthermore, injecting and hardening a heat-molten material. It is also possible to select one that corresponds to the material.

In the figure, reference numeral 4 denotes a liquid-permeable sheet made of synthetic nonwoven fabric, which is integrally adhesively laminated on the other side of the hollow reticulated fabric 1.

As mentioned above, the spring water treatment material according to the present invention includes the hollow reticulated fabric 1
Since the liquid-permeable sheet 4 is integrally laminated on one side of the liquid-permeable sheet 4, water can completely pass through from the side where the liquid-permeable sheet 4 is located and enter the numerous through-holes 2 of the hollow reticulated fabric l. Water can be collected.

In addition, since a water-stop sheet 3 is laminated on the other side of the hollow reticulated fabric l, water that has permeated into the hollow reticulated fabric l via the liquid-permeable sheet 4 leaks from the other side of the spring water treatment material. This can be completely prevented.

Therefore, the water collected in the hollow reticulated fabric 1 can flow downward through the through holes 2 and be discharged to, for example, a center drain buried in the bottom of the tunnel.

In the above embodiment, the water-stop sheet 3 was constructed by injecting a liquid waterproof substance into one side of the hollow net-like fabric l and integrally bonding the same. It is also possible to laminate plastic sheets, synthetic rubber sheets, etc., using an adhesive, or by heat-fusion bonding using high frequency waves, ultrashort waves, etc.

Figure 4 shows an example in which a vinyl chloride sheet is used as the water stop sheet 3, and this water stop sheet 3 made of vinyl chloride sheet is adhered to one side of a hollow reticulated fabric l using an adhesive. It is something.

In the above embodiment, a synthetic nonwoven fabric was used as an example of the liquid permeable sheet 4, but the liquid permeable sheet 4 is not limited to this, and any sheet that can permeate liquid may be used, such as felt material, Natural or synthetic resin fabric material 1
Various materials such as asbestos materials can be used.

An example of the use of the spring water treatment material constructed as described above will be explained with reference to FIG. 5 as follows.

That is, FIG. 5 is a schematic diagram of an embodiment in which the spring water treatment material of the present invention is applied to the inner peripheral wall of a tunnel 5, where 6 indicates a shotcrete layer and 7 indicates a lining concrete layer.

In the spring water treatment material of the present invention, a liquid permeable sheet 4 is interposed between the shotcrete layer 6 and the lining concrete layer 7 so as to be in contact with the shotcrete layer 6 side. Therefore, spring water leaking from the shotcrete layer 6 passes through the liquid-permeable sheet 4 and is collected in the through-holes 2 of the hollow network fabric 1, flowing down through the through-holes 2 and finally flowing into the tunnel 5. The tunnel 5 is constructed so that water is discharged to the outside of the tunnel 5 through a center drain 8 provided at the bottom.

<Effects of the Invention> Since the spring water treatment material according to the present invention has the structure and function as described above, it is soft and flexible as a whole and is easy to handle. It can be easily installed on open walls, etc.

In addition, since a liquid-permeable sheet is integrally laminated on one side of the hollow net-like fabric, water gushing out from the walls of tunnels, etc. is collected from the entire surface of the liquid-permeable sheet into the hollow net-like fabric, and the water flows onto the wall. It is possible to prevent the water from flowing down.

Furthermore, since a water-stop sheet is integrally laminated on the other side of the hollow net-like fabric, the water that has permeated through the hollow net-like fabric is completely stopped by this water-stop sheet and can be prevented from leaking to the sides. can be prevented.

Moreover, since a large number of through holes are provided in parallel inside the hollow reticulated fabric, a large amount of water collected inside the hollow reticulated fabric can be drained extremely smoothly through these through holes in a short period of time. , and there is no fear of clogging even after long-term use.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an example of the spring water treatment material according to the present invention, FIG. 2 is a perspective view showing some of its constituent parts, and FIG. A cross-sectional view, FIG. 4 is a perspective explanatory view of the spring water treatment material on the other side, and FIG. 5 is a cross-sectional explanatory view showing an example of use of this spring water treatment material. 1 is a hollow network fabric, 2 is a through hole, 3 is a water stop sheet, 4 is a liquid permeable sheet, 5 is a tunnel, 6 is a shotcrete layer, 7 is a lining concrete layer, and 8 is a center drain.

Claims (1)

[Claims] A liquid permeable sheet is integrally laminated on one side of a hollow reticulated fabric in which through holes are continuously arranged in parallel, and a water stop sheet is integrally laminated on the other side of the hollow reticulated fabric. A spring water treatment material featuring: