JPH0726532A - Waterproof civil engineering sheet that can detect leak points - Google Patents

Abstract

(57) [Summary] [Purpose] To minimize the possibility of outflow of stored materials due to breakage of the waterproofing civil engineering sheet, and to identify the damaged spot immediately so that it can be easily repaired. To do. [Structure] By stacking two rubber sheets and adhering the two rubber sheets at appropriate linear portions, a plurality of closed cells separated from each other are formed between the two rubber sheets. In the first invention, dyes of different colors are enclosed in each cell. Second
According to the invention, the positive and negative electrodes are provided between the two rubber sheets for each partial section so as not to contact each other, and the lead wire is independently drawn for each partial section and connected to an external alarm lamp or the like. Third
According to the invention, the number of electrodes in each partial section is one, and an alarm lamp or the like is connected to the ground and / or the outer electrode provided in the reservoir. [Effect] In the first invention, it is possible to know the fact of damage and the damage location by coloring the water or the reservoir in the water collection channel. In the second and third inventions, the alarm lamp is used for detection.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a civil engineering sheet, which is a waterproof rubber sheet laid on the bottom of a reservoir, an industrial waste landfill site, or the roof of a building.

[0002]

2. Description of the Related Art In order to prevent water leakage in the case of reservoirs, irrigation canals, etc., and in the case of industrial waste landfill sites, to prevent the infiltration of harmful substances into the groundwater, the bottom of the And lay a waterproof civil engineering sheet all over the glued surface and check that there is no leakage. The same applies when laying on the roof of a building.

[0003]

Even if it is confirmed that there is no leakage at the time of construction, if the rolling compaction of the substrate is insufficient or the weight of the waste dumped above is heavier than expected. It is possible that a corner of a rock protrudes from the base and breaks the civil engineering sheet laid on it. In the case of a rooftop of a building, the civil engineering sheet may be damaged due to deterioration of rubber due to long-term exposure to sunlight and air, physical damage by humans or crows, and the like. If the waterproof sheet is damaged during use, in the case of an industrial waste landfill site, harmful substances will be mixed into the groundwater, which will have a large impact on the neighborhood. In this case, it is necessary to repair the damaged part as soon as possible, but if the damaged part cannot be identified, all the waste from the landfill must be removed. It takes labor.

The present invention has been made to solve the above problems, and minimizes the possibility of the stored material flowing out due to the breakage of the civil engineering sheet. A waterproof civil engineering sheet that can be specified and that can be easily repaired.

[0005]

A first waterproof civil engineering sheet (first invention) according to the present invention made to solve the above-mentioned problems is formed by stacking two rubber sheets to form an appropriate linear portion. By adhering both rubber sheets with each other, a plurality of sealed partial sections separated from each other are formed between the both rubber sheets, and dyes of different colors are enclosed in each partial section.

The second waterproof civil engineering sheet according to the present invention (the second invention) has a structure in which two rubber sheets are superposed and the two rubber sheets are adhered to each other by an appropriate linear portion so that a space between the two rubber sheets can be obtained. To form a plurality of closed sub-sections separated from each other,
Positive and negative electrodes are provided between both rubber sheets for each partial section so as not to contact each other, and lead wires are drawn out to the outside independently for each partial section.

Further, the third waterproof civil engineering sheet according to the present invention (third invention) is such that two rubber sheets are superposed and the two rubber sheets are adhered to each other by an appropriate linear portion so that a space between the two rubber sheets is provided. To form a plurality of closed sub-sections separated from each other,
One electrode (inner electrode) between both rubber sheets for each partial section
Is provided, and lead wires are drawn out to the outside independently for each partial section.

[0008]

In the waterproof civil engineering sheet according to the first aspect of the invention, when the lower rubber sheet is damaged in a certain section, the dye enclosed in the section flows out toward the base, and the colored water flows out into the water collecting channel. To be discovered. Since this color is different for each partial section, it is possible to identify which part of the civil engineering sheet is damaged by observing the color of the water, and the civil engineering sheet can be easily repaired. Even when the upper rubber sheet is damaged, the dye flows out into the stored material, and the fact of the damage and its location are detected on the spot. Even if the stored material is industrial waste, some water is usually stored due to rainwater, etc., and the diffusion range is narrow compared to the case where it permeates underground. The discovery of diffusion is quite possible.

In the waterproof civil engineering sheet of the second invention, after construction,
A power source (either direct current or alternating current) and a continuity detector for each partial section are provided in front of the lead wire drawn out to the outside. When one of the upper and lower rubber sheets is damaged in a certain partial zone, water invades into the partial zone from the outside, and the positive and negative electrodes of the partial zone are brought into conduction by the invading water. Since the conduction state of both electrodes is detected only by the conduction detector corresponding to the partial section, a quick repair work can be performed as in the first invention.

In the waterproof civil engineering sheet according to the third aspect of the invention, at the time of construction, the other electrode (outer electrode. This is 1 for all partial zones) on the ground and / or in the reservoir at an arbitrary point outside the construction site. Book is good). After constructing the main civil engineering sheet, between the lead wire and the outer electrode (ground electrode and / or reservoir inner electrode) that are pulled out to the outside, the power supply (either direct current or alternating current) and each lead wire A continuity detector (that is, for each partial section) is provided. If one of the upper and lower rubber sheets is damaged in a certain sub-zone, water will intrude into the sub-zone from the outside and the inner and outer electrodes in the sub-zone (ground below the construction site and / or in the reservoir) Of water) becomes conductive. Since this conduction state is detected only by the conduction detector corresponding to the partial section, a quick repair work can be performed as in the first and second inventions.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the first invention will be described with reference to FIGS. As shown in FIG. 1, the civil engineering sheet 10 of this embodiment is composed of two upper and lower rubber sheets 11 and 12. As the rubber sheets 11 and 12, conventional ordinary rubber sheets for civil engineering sheets can be used. As shown in FIG. 2, the both rubber sheets 11 and 12 are bonded to each other by a linear portion (bonding portion) 14 that runs in a mesh shape over the entire sheet, so that the entire civil engineering sheet 10 has several rectangular shapes. It is divided into cells. In FIG. 2, a thin solid line 15 indicates a seam of the upper rubber sheet 11, and a thin broken line 1
Reference numeral 6 denotes a seam of the lower rubber sheet 12. As shown in FIG. 2, it is desirable that the adhesive portion 14 avoid the joints 15 and 16 of the rubber sheets 11 and 12, if possible.

Dyes 13a, 13b, 1 having different colors are provided in each of the cells, which are separated by the adhesive portion 14 and sealed.
Enclose 3c. These dyes 13a, 13b, 13c are food additive pigments that are harmless to the human body, or
Commercially available alarm dyes for water use can be used.

If the civil engineering sheet 10 of this embodiment has a relatively small area, it can be manufactured in advance in a factory, then transported to the site and laid on the base as it is. When the construction area is large, it is possible to manufacture a civil engineering sheet 10 composed of one or a few cells in a factory and join the civil engineering sheet 10 on site, but it is possible to use all of them on site. It can also be manufactured in. The construction method in this case is as follows, for example.
First, the lower rubber sheet 12 is laid on the base, and the dye 13a or the like, which is put into a bag that can be easily torn, is placed on the lower rubber sheet 12 at appropriate intervals. The upper rubber sheet 11 is laid on it, and the upper and lower rubber sheets 11 and 12 are bonded between the dye bags. Finally, an impact is applied from above the upper rubber sheet 11 to break the dye bag and diffuse the dye into the cell. If the dye bag is hydrophobic, it may be used as it is.

In this way, when the civil engineering sheet 10 of this embodiment is laid on the bottom of a reservoir or an industrial waste landfill, in the unlikely event that the lower rubber sheet 12 is torn, the dye enclosed in the cells of that portion is dyed. 13a etc. leaked to the base,
Color the water in the catchment. Therefore, when it is discovered that the water in the water collection channel is colored, it can be known that the lower rubber sheet 12 of the civil engineering sheet 10 has been damaged, and the damaged location can be immediately specified by the color. As a result, the civil engineering sheet 10 can be easily repaired, and usually the upper and lower rubber sheets 11 and 12 are unlikely to be damaged at a stretch. Therefore, repairing is performed at this stage before the stored material flows out. Leakage prevention measures can be taken. For example, in the case of an industrial waste landfill, by removing only the waste in that part and repairing the rubber sheet 11 or 12, it is possible to prevent harmful waste from entering the groundwater.

An embodiment of the second invention will be described with reference to FIGS. The civil engineering work sheet 20 of the present embodiment has upper and lower two rubber sheets 21, 2 as in the case of the first embodiment of the present invention.
2 is formed by dividing the entire cell into a plurality of cells by performing line bonding at an appropriate portion 24. However, instead of putting a dye in each cell, the positive and negative electrodes 25,
26 is enclosed. It is preferable that both electrodes 25 and 26 are fixed (adhesive, fixed with tape, etc.) to the inner surfaces of the upper and lower rubber sheets 21 and 22 so as not to contact each other. In the civil engineering sheet 20 of this embodiment, one electrode 25 is attached to the inner surface of the upper rubber sheet 11 and the other electrode 26 is attached to the inner surface of the lower rubber sheet 12, and a dried nonwoven fabric is used as the interposer 23 between the two. Intervenes. Both electrodes 25, 26 are guided to the adhesive portion 24 and connected to a lead wire 27 running in the adhesive portion 24.

At the site (reservoir, rooftop of the building, etc.), after carrying out the construction in the same manner as in the above-mentioned embodiment, all the lead wires 27 are led to the monitoring box 30. In the monitoring box 30, a power source 28 and a monitor lamp 29 (light emitting diode, miniature bulb, etc.) are connected to each lead wire 27. Where the power supply 28
Need only use one common to all lead wires, but the monitor lamp 29 is provided separately for each cell,
Correspond to the position of each cell. For example, a method of drawing a map of the construction site on a panel and disposing monitor lamps 29 corresponding to the locations of the cells on the map can be adopted.

After the construction, if the civil engineering sheet 20 is damaged at any location, the lower rubber sheet 22 will start from the soil on the base side, and the upper rubber sheet 21 will be the reservoir (when laying on the roof of the building. From the rainwater that collects on the roof), water invades the cells at that location. Due to this moisture, both electrodes 25 and 26 of the cell are short-circuited, and the corresponding monitor lamp 29 in the monitoring box 30 is turned on. As a result, similarly to the case of the above-described embodiment, the supervisor can immediately know which part of the rubber sheet has been damaged and can quickly perform repair.

An embodiment of the third invention will be described with reference to FIGS. 6 and 7. As in the case of the first and second inventions, the civil engineering sheet 40 of this embodiment is composed of two upper and lower rubber sheets, and the whole is divided into a plurality of cells by performing line bonding at appropriate portions 44. It was done. However, in the civil engineering sheet 40 of this embodiment, only one electrode (inner electrode) 45 is enclosed inside each cell, unlike the embodiment of the second invention. The inner electrode 45 of each cell is connected to a lead wire 47 running in the adhesive portion 44, and is led out to the outside independently for each cell.

At the site (reservoir, rooftop of a building, etc.), the construction is carried out in the same manner as in the above embodiment, and then all the lead wires 47 are independently guided to the monitoring box 50. In addition, the electrode (ground electrode) 51 is embedded in the ground just outside the construction site, and the electrode (reservoir pond) is also formed on the reservoir (formed on the roof of the building when it is laid on the roof of the building) formed by the civil engineering sheet. Electrode) 52
The lead wires from these outer electrodes 51 and 52 are also drawn into the monitoring box 50. In the monitoring box 50,
A power supply 48 and a monitor lamp 49 (light emitting diode, miniature bulb, etc.) are connected between each lead wire 47 and the ground electrode 51 and reservoir electrode 52. Here, as in the above-described embodiment, the power source 48 need only use one common to all the lead wires, but the monitor lamp 49 has the monitor lamp 49 for each cell and ground / ground.
It is provided separately for each reservoir, and it corresponds to the position of each cell and the type of ground / reservoir. For example, similar to the above, a map of the construction site is drawn on the panel, and the two monitor lamps 49 corresponding to the location of each cell are classified by ground / reservoir (it is better to distinguish them by changing the color of the lamp 49). It is possible to adopt the method of arranging in.

After the construction, if the civil engineering sheet 40 is damaged at any place, from the soil on the base side in the case of the lower rubber sheet, the stored material (in the case of the upper rubber sheet, the rooftop when laying on the roof of the building). (Rainwater accumulated in), water infiltrates into the cell at that location. This water causes the electrode 45 in the cell to
And the outer electrode (ground electrode 51 or reservoir electrode 52) are short-circuited, and the corresponding monitor lamp 49 in the monitoring box 50 is turned on. As a result, similarly to the case of the above-described embodiment, the supervisor can immediately know which part of the rubber sheet has been damaged and can quickly perform repair.

In the embodiments of the second and third inventions, not only the lamp but also other warning means such as a buzzer may be used as the warning. Further, the patterns of the electrodes 25, 26, 45 in each cell shown in FIGS. 4 and 6 are of course only examples, and any pattern can be adopted.

[0022]

According to the present invention, in any of the waterproof civil engineering sheets of the first to third inventions, the rubber sheet is broken at the stage when one of the upper and lower rubber sheets is broken, and the broken portion thereof. However, at that stage, the other sheet is still in a state where the stored materials (water storage, industrial waste, etc.) have not flown out. Therefore, by promptly repairing the damaged portion, it is possible to always prevent the stored material from flowing out. In particular, the sheet of the second invention is suitable for the waterproof sheet laid on the rooftop of a building, and when the rubber sheet on the upper surface is chemically deteriorated or physically damaged and water leakage starts, the area immediately becomes conductive. Since it is detected by the detector, quick repair measures can be taken and rainwater can be prevented from entering the building.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a civil engineering sheet that is an embodiment of the first invention.

FIG. 2 is a plan view of the civil engineering sheet according to the first embodiment of the invention.

FIG. 3 is a cross-sectional view of a civil engineering sheet that is an embodiment of the second invention.

FIG. 4 is a plan view showing an example of an electrode arrangement inside a civil engineering sheet of an embodiment of the second invention.

FIG. 5 is a circuit diagram of a civil engineering sheet damage detection system according to an embodiment of the second invention.

FIG. 6 is a plan view showing an example of an electrode arrangement inside a civil engineering sheet according to an embodiment of the third invention.

FIG. 7 is a circuit diagram of a civil engineering sheet damage detection system according to an embodiment of the third invention.

[Explanation of symbols]

Civil engineering sheets 11, 21 ... Upper rubber sheets 12, 22 ... Lower rubber sheets 13a, 13b, 13c ... Dyes (colors are different from each other) 23 ... Inserts 14, 24, 44 ... Upper and lower rubber Adhesive part of sheet 15 ... Seam of upper rubber sheet 16 ... Seam of lower rubber sheet 25, 26 ... Positive / negative electrode 45 ... Sheet internal electrode 51, 52 ... External electrode 27, 47 ... Lead wire 28, 48 ... Power supply 29, 49 ... Monitor lamp 30, 50 ... Monitoring box

Claims (3)

[Claims] 1. Two rubber sheets are overlapped, and the two rubber sheets are adhered to each other by an appropriate linear portion to form a plurality of sealed partial zones separated from each other between the two rubber sheets. A waterproof civil engineering sheet that can detect leak points and is characterized by encapsulating different colored dyes. 2. Two rubber sheets are overlapped, and the two rubber sheets are adhered to each other at appropriate linear portions to form a plurality of closed partial zones separated from each other between the two rubber sheets. A waterproof civil engineering sheet capable of detecting a water leakage point, characterized in that positive and negative electrodes are provided between both rubber sheets so as not to come into contact with each other, and lead wires are independently led out for each partial section. 3. Two rubber sheets are superposed, and the two rubber sheets are adhered to each other at appropriate linear portions to form a plurality of sealed partial zones separated from each other between the two rubber sheets. A waterproof civil engineering sheet capable of detecting a leaking point, wherein one electrode is provided between both rubber sheets and lead wires are independently drawn out for each partial section.