JP3204748U - U-groove channel seam leakage prevention structure - Google Patents

Abstract

The present invention provides a structure for preventing water leakage between seams between U-shaped concrete blocks in a U-shaped groove water channel configured by arranging U-shaped concrete blocks. A seal 2 is attached along a bottom surface, both inner side surfaces, and an upper end surface so as to block a seam 3. The seal 2 has a three-layer structure, the surface is a modified asphalt layer with sand, the intermediate layer is a glass fiber woven fabric layer, and the lower layer is an adhesive asphalt layer having adhesiveness by heating. [Selection] Figure 1

Description

  The present invention relates to a water leakage prevention structure for preventing water leakage from a seam in a U-shaped groove channel constituted by arranging U-shaped concrete blocks.

  In recent years, U-shaped concrete blocks are frequently used as water channels for supplying water to paddy fields. FIG. 5 is a specific example showing the appearance of a general U-shaped concrete book. Sides (B) and (B) stand up on both sides of the bottom (A), and the cross section forms a U-shape. . By arranging the U-shaped concrete blocks in the longitudinal direction, a U-shaped groove water channel can be configured.

  Although it is possible to construct a U-shaped groove channel by making a formwork and pouring concrete into it, standardized U-shaped concrete blocks can be mass-produced at the factory, transported to the site and put into place In recent years, most of the water channels using this U-shaped concrete block can be created by simply arranging them.

  By the way, a plurality of U-shaped concrete blocks are arranged in the U-shaped groove water channel, and the seam is filled with mortar to prevent water leakage. However, when a long time has passed, there are many cases where the mortar of the seam cracks and leaks from the seam. In particular, the mortar peels off due to vibration generated when a large vehicle travels on the road, and when an earthquake occurs, the seam cracks.

  In rice farming, water is needed from the time of planting to the time when the ears appear, so the paddy fields are usually filled with water, but when the ears grow and the harvesting time for harvesting approaches, the paddy fields are filled with water. It is not necessary to put in, but rather it is necessary to dry the paddy field. If water leaking from the seam of the U-shaped ditch channel flows into the paddy field at such a time, the paddy field cannot be dried, and as a result, the ear of rice cannot be fully produced.

  Thus, the yield of rice is reduced and the quality is also reduced. On the other hand, when harvesting, the combine enters the paddy field and harvests the rice, but if the water leaking from the U-shaped ditch channel flows into the paddy field, the paddy field is not dry and soft, and the very heavy combine runs smoothly. Cannot be done. Of course, more water than necessary is not preferable even when water is needed after planting.

According to Japanese Patent Laid-Open No. 7-127119, “drainage structure” allows water to be stopped with a simple structure at a joint between drainage channels provided continuously, so that laying work can be performed easily and efficiently.
That is, a continuous locking groove is formed along one side end face of the U-shaped groove main body, and a water-swellable water-stopping material formed in a corresponding band shape is attached. A locking projection is formed in the locking groove so as to protrude in the width direction, thereby preventing the water-swellable water-stopping material from falling off. At the time of laying, install one side end face provided with a water-expandable water stop material toward the other side end face of the other U-shaped groove body, and just supply moisture to the gap between these side end faces Thus, the water-swellable water-stopping material can swell and reliably stop water.

The structure of the drainage channel is effective when a U-shaped groove channel is constructed, but water leaks if the water-expandable water-stopping material degenerates with the passage of time. Moreover, since the water-expandable water-stopping material is attached to the side end face of the U-shaped groove body, when replacing with a new water-expandable water-stopping material, the U-shaped groove body must be removed once. Therefore, it would be more work than constructing a new U-shaped ditch channel.
"Structure of drainage channel" according to Japanese Patent Laid-Open No. 7-127119

  As described above, the U-shaped groove water channel constituted by arranging U-shaped concrete blocks has the above-described problems. The problem to be solved by the present invention is this problem, and provides a seam leakage prevention structure of a U-shaped groove water channel sealed so as not to cause water leakage from the seam of the U-shaped concrete block.

  The U-shaped groove channel according to the present invention is configured by arranging U-shaped concrete blocks, and a seal is attached to the joint of the U-shaped concrete blocks. Of course, the seam is filled with mortar as usual, but the seal is attached to the inner surface of the seam of the U-shaped groove water channel. And this seal | sticker can be used in order to seal the joint of the existing U-shaped ditch channel not only in the newly installed U-shaped ditch channel.

  Here, the specific structure of the seal is not limited, but first, it has durability, and an adhesive layer is provided on the lower surface. By heating, it is easily adhered to the seam of the U-shaped groove water channel and fixed so as not to peel off. Moreover, the upper surface is always exposed to the flow of water, and is an asphalt layer that is hard to wear and has excellent strength.

  The seal structure according to the present invention attaches a seal to the seam of the U-shaped groove water channel in which U-shaped concrete blocks are arranged, and can prevent water leakage from the seam. There is no water leakage when a U-shaped ditch water channel is created, but the U-shaped concrete block becomes obsolete with the passage of time, and the mortar packed in the seam deteriorates, causing water leakage. By attaching it, water leakage can be prevented easily and without incurring large costs.

  By preventing water leakage, it is possible to dry the paddy field when the rice is harvested, which increases the yield and the quality of the rice. In addition, an appropriate amount of water can be filled in the rice field after planting. During harvesting, the combine can easily enter a dry paddy field and can run smoothly and efficiently harvest rice.

An embodiment of the present invention in which a seal is attached to a seam of a U-shaped groove water channel. Specific cross-sectional structure of a seal. Sectional drawing which stuck the seal | sticker through the primer and the sealing material on the joint of the U-shaped ditch water channel. The cross-sectional view which stuck the seal | sticker on the joint of the U-shaped groove waterway. The external view of the general U-shaped concrete block which comprises a U-shaped ditch waterway.

  FIG. 1 shows an embodiment of the present invention showing a seal structure in which a seal is attached to a seam of a U-shaped groove water channel. In the figure, 1 represents a U-shaped concrete block, 2 represents a seal, and 3 represents a joint. The U-shaped ditch channel is constructed by arranging U-shaped concrete blocks 1, 1... In the longitudinal direction, and mortar is filled in the joints 3, 3,. -Is connected without any step and prevents water leakage from the joints 3, 3,. Therefore, water flows through the U-shaped ditch channel and can be supplied to the paddy field when necessary.

  This U-shaped ditch channel is for supplying water to the paddy field. It is installed at a position slightly higher than the paddy field, and inflow places are provided in places of the U-shaped ditch channel. The water is flowing. Of course, there is also a drainage channel, but the drainage channel is provided at a position lower than the paddy field, and therefore, there is no problem of water leakage flowing into the paddy field.

  By the way, with the passage of time, the inner surface of the U-shaped concrete block 1 constituting the U-shaped groove channel is eroded by the flow of water, and in particular, the mortar packed in the joint 3 is cracked and a gap hole is generated. Although it is possible to refill the mortar to fill the gap hole, in the present invention, the seal hole 2 can be stuck so as to cover the joint 3 to close the gap hole. That is, water leakage is prevented by sticking the seal 2.

  FIG. 2 is a specific example showing the seal 2 attached to the joint 3. The seal 2 has a band shape with a constant width and is composed of three layers. The upper layer is a modified asphalt layer 4 with sand, the intermediate layer is a glass fiber woven fabric layer 5, and the lower layer is an adhesive asphalt layer 6. The modified asphalt layer with sand is firm, resistant to erosion against water flow, and durable, and the intermediate glass fiber woven fabric layer 5 is waterproof. Then, when the lower adhesive asphalt layer 6 is heated and softened, it can be attached to the inner surface so as to cover the joint 3. The adhesive asphalt layer 6 can adhere to the inner surface of the water channel and close the gap hole generated in the joint 3.

  FIG. 3 is a cross-sectional view of the sheet 2 when the sheet 2 is adhered to the seam 3 of the U-shaped groove water channel, because the inner surface of the U-shaped concrete block 1, 1 is eroded and roughened. In order to improve adhesive strength, primer 7 is applied. The seam 3 is filled with a sealing material 8. Although the mortar may be used as the sealing material 8, it is also possible to fill the seam 3 using a caulking gun by using a silicon-based sealing material 8 that has excellent elasticity and follows the movement of the seam 3.

  Of course, the mortar can be packed into the joint 3 at the time of construction to connect the U-shaped concrete blocks 1, 1..., And the silicon-based sealing material 8 can be used for repair when water leaks from the joint 3. . That is, the silicon sealing material 8 is filled with a caulking gun in the crack of the joint 3 made of mortar.

  FIG. 4 shows a cross section in which the seal 2 is adhered to the joint 3 of the U-shaped groove water channel. The seal 2 is stuck along the bottom surface 9, the inner side surfaces 10, 10 and the upper end surfaces 11, 11 without any gaps. There are places where the seam 3 is cracked, and the water flowing through the U-shaped groove water channel can be stopped and the seal 2 can be adhered when the place where the water leak is confirmed. As shown in FIG. 4, the work is simply pasting, and it is not necessary to dig up the U-shaped concrete block 1, and it is extremely simple and easy to repair water leakage.

By the way, the seal structure shown in FIG. 2 is only one specific example, and is not limited to this embodiment. The sealing material 2 in FIG. 2 has a thickness of 3.0 mm, a mass of 3.75 kg / m ² , and a tensile strength of 400 N / cm in both the longitudinal direction and the width direction.

1 U-shaped concrete block 2 Seal 3 Seam 4 Modified asphalt layer with sand 5 Glass fiber woven fabric layer 6 Adhesive asphalt layer 7 Primer 8 Sealing material 9 Bottom
10 Inner side
11 Top surface

Claims (2)

In a structure for preventing water leakage of cracks generated in a seam composed of mortar between U-shaped concrete blocks in a U-shaped groove water channel constituted by arranging U-shaped concrete blocks, the bottom surface, both inside The seal is attached along the side and upper end surface, where the seal is a three-layer structure, the surface is a modified asphalt layer with sand, the intermediate layer is a glass fiber woven fabric layer, and the lower layer is heated. A U-groove water leakage prevention structure characterized in that the adhesive asphalt layer has an adhesive property, and the crack is filled with a silicone sealing material having excellent elasticity. The water leakage prevention structure for a U-shaped groove water channel according to claim 1, wherein a primer for improving adhesive strength is applied to the inner surface of the U-shaped groove water channel and a seal is adhered.

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