JPH09221817A - Cover for u-shaped channel and construction method for closing u-shaped channel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for sealing an upper part of an existing U-shaped channel, which can seal with the simple structure at a low cost and which can maintain the water permeability and which has the durability against the step-on and with which the soil of an upper part thereof is hard to fall into the U-shaped channel at the time of change. SOLUTION: Locking parts 22, 22 to be locked with both upper ends 7u, 7u of a U-shaped channel 7 from outside thereof are projected downward from both side edges of a plate part 21. A rising part 21x is provided in a central part of the plate body 21 in the cross direction, and recessed parts 21y, 21y are provided between each locking part 22 and the rising part 21x. Plural through holes 23 are intermittently formed in a bottom part of the recessed parts 21y, and a water permeable filter 24 is provided in an upper part of the through hole 23. Even in the case where the plate part is stepped and likely to be bent, the locking parts 22 are locked with both upper ends 7u, 7u of the U-shaped channel 7 from outside and a central part is not formed with a through hole 23, lowering of the strength of the plate itself is restricted. Since the through holes 23 are positioned in the bottom part of the recessed part 21y, the water is guided with the banking e1 to the through hole 23, and the sufficient water permeability is secured. Intrusion of earth or the like at the time of construction and change is prevented by the locking parts 22 of both side edges and the water permeable filters 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a U-shaped groove lid for drainage, and more particularly to a U-shaped groove lid provided near a boundary in a garden of a house.

[0002]

2. Description of the Related Art U-shaped grooves are used as water distribution facilities for rainwater in gardens and roads, and the upper part of the U-shaped grooves is open or closed by lattice-shaped grating. However, in such a state, earth and sand, etc., flowed into the U-shaped groove and accumulated on the bottom, so that water handling was likely to be hindered.

Therefore, in order to prevent sediment from accumulating in the U-shaped groove, for example, a U-shaped groove described in Japanese Utility Model Laid-Open No. 61-68186 has been proposed. In this publication, a step is provided on the upper inside of the U-shaped groove, the end of the plate-shaped filter is locked to this step, and some sand or the like is deposited on the top.

[0004]

However, in the prior art of the publication, the member that closes the entire upper portion of the U-shaped groove is a porous filter, and the end of the plate-shaped filter has a step of the U-shaped groove. Since it is only slightly locked to the part, the durability against pedaling tends to be insufficient. In addition, since the plate filter is locked inside the U-shaped groove, the sand above the filter is removed by U.
It is difficult to replace the filter without dropping it inside the groove. Furthermore, because the U-shaped groove with the locking part is used,
The upper part of the existing U-shaped groove could not be closed.

The present invention has a simple structure and can be manufactured at low cost, has durability against trampling while maintaining water permeability, and the earth and sand or the like at the upper portion does not easily fall into the U-shaped groove during replacement, so that the existing U-shaped groove It is to provide a U-shaped groove lid that can close the upper portion and a method of closing the U-shaped groove.

[0006]

In order to achieve the above object, a feature of the U-shaped groove lid according to the present invention is that the locking portions for locking both upper ends of the U-shaped groove from the outside are provided in the width of the plate-shaped portion. A plurality of through holes are intermittently formed in the plate-shaped portion, projecting downward from both side edges with respect to the direction, and a water-permeable filter is provided above the through holes.

According to the above-mentioned features of the present invention, even if the plate-shaped portion is bent due to stepping on, the locking portions are locked from the outside to both upper ends of the U-shaped groove, and a plurality of plate-shaped portions are formed. Since the through holes are only intermittently arranged, the reduction in strength of the plate itself is suppressed. On the other hand, even if the through holes are intermittent, water is introduced into the through holes by filling the ground, etc., and sufficient water permeability is secured. In addition, due to the locking portions on both side edges and the water-permeable filter, it is difficult for dirt and the like to enter the U-shaped groove during installation or replacement. Further, the soil pressure acts on the locking portion from the outside toward the inside in the width direction. The pressure in the width direction increases due to the solidification of the soil with the passage of time after installation, and the deformation of the plate-shaped portion due to trampling can be suppressed more sufficiently.

A ridge is formed along the longitudinal direction of the plate-like portion at or near the widthwise center of the plate-like portion, and between the ridge and the both locking portions of the plate-like portion. In addition, a pair of recesses may be formed along the longitudinal direction. By forming the raised portion in the central portion or the like, it is possible to mitigate the depression of the central portion downward due to stepping or the like. Also,
By forming the raised portion and the recessed portion along the longitudinal direction, the bending strength in the longitudinal direction can also be increased.

Particularly, it is desirable to provide the through hole at the bottom of the recess. This is because rainwater or the like collected in the recesses can be efficiently drained. Moreover, since the central portion in the width direction where the bending stress at the time of stepping is concentrated protrudes and there are not many through holes in this portion, the durability is excellent in terms of structure.

Further, a flat portion may be provided between the respective locking portions and the respective concave portions so as to contact both upper ends of the U-shaped groove from above. This is because the flat portion stabilizes the posture of the main lid in the locked state in the U-shaped groove.

In addition, an overhanging portion may be provided so as to overlap the plate-shaped portion of the other U-shaped groove lid from any one of both end edges in the longitudinal direction of the plate-shaped portion. Since the seam between adjacent U-shaped groove lids is closed by the overhanging portion, it is possible to effectively prevent the invasion of soil or the like into the U-shaped groove, and
The U-shaped groove can be particularly preferably used in a region where the U-shaped groove is bent in the horizontal direction.

On the other hand, the filter may be provided on at least one of the both ends of the plate-like portion, and the notch may be provided on at least one of the both ends. The filter provided on at least one of the both ends of the plate-shaped portion overlaps the other end, and prevents the entry of soil or the like from the joint between the U-shaped groove lids adjacent to each other, while keeping the gap between the joints. It can be effectively used to improve the water permeability. The notch may be provided on either side of the both ends where the filter is provided or on the other side, but the work for attaching and detaching the U-shaped groove lid is facilitated through the notch.

Further, between the locking portion and the plate-like portion,
It is also beneficial to provide a rising portion for hanging the plate portion. Since the rising portion is along the inner surface of the U-shaped groove, even if the plate-shaped portion is stepped on, the locking portions are more difficult to disengage from both upper ends of the U-shaped groove, and the durability against stepping is improved. Moreover, since the plate-shaped portion hangs down, it becomes easy to apply embankment or the like on the plate-shaped portion. In particular, when the above-mentioned protruding portion is provided in the central portion of the plate-shaped portion, when the plate-shaped portion is stepped on, the rising portion protrudes on the inner surface of the U-shaped groove in the width direction, and The deformation is further suppressed.

In constructing the filter, the filter material and the stitch-shaped supporting member may be bonded together.
In this way, by adhering the supporting member to the filter material, the durability of the entire filter against trampling is also improved.

On the other hand, the feature of the U-shaped groove closing method using the above-mentioned U-shaped groove lid is that the U-shaped groove lid is in a state in which the locking portions are locked to both upper ends of the U-shaped groove. Are arranged side by side, and soil, sand, pebbles, plants, etc. are put on the arranged U-shaped groove lids.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing an outline of a group of detached houses 1 with a garden. The upper site 2a-c on the upper side of the figure is located higher than the lower site 3a-c on the lower side of the figure with the stone wall 5 separated. Each site is partitioned by a boundary wall 4, and the upper-side sites 2a-c and the lower-side sites 3a-c are from the sites 2a and 3a on the left side of the figure to the sites 2b and 3b, then 2c and 3c. It is formed so as to be gradually lowered stepwise. A house 6 is built on the right-hand side of each of the lower-side sites 3a to 3c, and a U-shaped groove 7 for drainage is formed on the upper and left ends of each of the lower-side sites 3a to 3c. Taking the lower side site 3b in the center as an example, the U-shaped groove 7 drains rainwater and the like that pours into the lower side site 3b of itself, and also the upper side sites 2a and 2b and the leftmost lower side site 3a. It is usually installed at the boundary with each site 2a, 2b, 3a on the side of a high place in order to process the wastewater flowing down from the site. Rainwater collected by the U-shaped ditch 7 will be drained to the road-side underground ditch 10 through the manhole 8 and the lower drainage ditch 9 such as a parking lot. The U-shaped groove lid 20 to be described later according to the present invention includes these U-shaped grooves.
By closing the upper surface of the groove 7 in a drainable state,
Expand the garden on each site.

FIG. 2 is an exploded perspective view of the U-shaped groove lid 20 according to the present invention. In this specification, the direction of the lid 20 corresponding to the longitudinal direction of the groove in the state of being attached to the groove is referred to as the longitudinal direction X, and the horizontal direction orthogonal to the longitudinal direction is referred to as the width direction Y. The U-shaped groove lid 20 is formed by bending both side edges of the plate-shaped portion 21 in the width direction Y downward, and from the both side edges, as shown in FIG. 3, upper ends 7u, 7 of the U-shaped groove 7.
Locking parts 22 and 22 which are locked to the u from the outside are provided so as to project downward, and a plurality of through holes 23 are intermittently formed in the plate-shaped part 21. In addition, each through hole 23 is closed from above by a water permeable filter 24.

The plate-like portion 21 and the locking portion 22 in the present invention
Is, for example, about 1 to 3 mm in thickness, preferably 1.5 m
It can be configured by using a stainless plate of about m.
Further, in the present embodiment, the through holes 23 having a diameter of about 10 to 20 mm, preferably about 16 mm are intermittently formed in the longitudinal direction X.
It is formed in a zigzag pattern on the left and right. These through holes 2
The diameter of No. 3 and the thickness of the plate-shaped portion 21 are not limited to those in the present embodiment, and are determined in consideration of the size of the hole and the reduction in strength due to the stepping of the plate-shaped portion 21. That is, as a main item of the present invention, sufficient drainage performance can be obtained even if the through holes 23 are intermittently formed without forming the large number of through holes 23 in the plate-like portion 21 so that the strength is reduced. Reserved. In the implementation, for example, the total length in the longitudinal direction X is made narrower than about 1 m in the drawing, and about 10 through holes 23 are provided on each side along the longitudinal direction X.
The protrusion amount of the locking portion 22 may be about 30 to 40 mm.

The above-mentioned filter 24 is an air filter (made by Hayashi Felt Co., Ltd.) for an air conditioner.
Is used, and specifically, one formed by entwining resin fibers to have a thickness of about 5 mm is used. In the present embodiment, the lower surface of the rectangular filter 24 is attached to the upper surface of the plate-like portion 21 via a double-sided tape or an adhesive or the like in order to facilitate processing and prevent the edge or the like from entering the through hole 23.

When the U-shaped groove lid 20 having the above-described structure is mounted on the U-shaped groove 7, the U-shaped groove is formed as shown in FIG.
The engaging portion 22 is engaged with both upper ends 7u, 7u of the character groove 7 from the outside. Then, the plurality of U-shaped groove lids 20 are arranged side by side in the longitudinal direction of the U-shaped groove 7 so that both ends thereof in the longitudinal direction X are in contact with the other U-shaped groove lids 20. further,
Some amount of embankment e1 is applied to the soil E, the filter 24, and the upper surfaces of the plate-like portion 21.

The inventors have used the U-shaped groove lid 20 according to this embodiment for two years in their own house, but the drainage through the U-shaped groove 7 was sufficiently performed. Further, the soil pressures F and F act on the left and right locking portions 22 and 22 from the outer side to the inner side in the width direction Y, respectively. According to the results of use by the inventors, it has been confirmed that the pressures F and F in the width direction Y increase due to the solidification of the soil E after installation, and the deformation of the plate-shaped portion 21 due to trampling can be more sufficiently suppressed.
By the way, in FIG. 3, each locking portion 22 has an upper end 7u of the U-shaped groove.
However, a clearance of several millimeters may be provided between the locking portion 22 and the upper end 7u of the U-shaped groove. This clearance allows U-shaped groove 7
The assembly error of can be absorbed. Further, by partially overlapping the lid 20 having no clearance and the lid 20 having the clearance, the lid 20 with respect to the longitudinal direction X is formed.
The installation length of can be adjusted. Since part of the soil enters this clearance, there is no inconvenience to the engagement between the engagement portion 22 and the upper end of the U-shaped groove due to the provision of the clearance.

Next, another embodiment of the present invention will be described. In addition, in each of the other embodiments described below, the same members as those in the above-described embodiments are denoted by the same reference numerals.

At a portion such as the bent portion 7t shown in FIG.
When the U-shaped groove lid 20 according to the above-described embodiment is used, there is a disadvantage that those joints are released upward. In such a case, for example, it is desirable to use the U-shaped groove lid 20 in the second embodiment as shown in FIG. In the present embodiment, an overhanging portion 21a that overlaps one end edge of the plate-like portion 21 with the rear end portion 21b in the longitudinal direction X of the other U-shaped groove lid 20 is provided. Both side edges of the overhanging portion 21a are open without the locking portion 22, and the overhanging portion 21a is displaced upward by only the plate thickness of the plate-like portion 21. According to this embodiment, the bent portion 7t
It is possible to overlap the projecting portion 21a on the plate-shaped portion 21 arranged on one side to close the upper surface of the bent portion 7t. Of course, the U-shaped groove lid 20 according to the present embodiment may be used in the U-shaped groove 7 in another linear portion.
In this case, the invasion of soil from the overhanging portion 21a into the joint between the U-shaped groove lids 20 and 20 is prevented. In addition, even if the projecting portion 21a is flush with the upper surface of the plate-shaped portion 21, it can be practically used without any problem.

Further, at the terminal end portion 7e shown in FIG. 1, it is necessary to position the U-shaped groove lid 20 to be attached thereto,
In this case, for example, it is desirable to configure the U-shaped groove lid 20 according to the third embodiment as shown in FIG. In the U-shaped groove lid 20 corresponding to the terminal end portion 7e in the longitudinal direction X in the present embodiment, the rear end portion of the previous plate-shaped portion 21 is the locking portion 22.
Similarly to the above, the end stop 25 is formed by being bent downward. This end stop 25 is the end portion 7e of the U-shaped groove 7.
The U-shaped groove lid 20 is positioned in the longitudinal direction X of the U-shaped groove 7 by abutting against the U-shaped groove 7, and the terminal stopper 25 is sequentially positioned.
Another U-shaped groove lid 20 having no is attached to the U-shaped groove 7 continuously. In this embodiment, the through holes 23 are formed to have a smaller diameter than in the first embodiment, and the number thereof is increased as compared with the first embodiment. Also, the filter 24 is 1
It is configured to cover all the through holes 23 with one sheet.

In the fourth embodiment shown in FIG. 6, the rising portions 26, 2 along the vertical direction for suspending the plate-shaped portion 21 between the pair of locking portions 22, 22 and the plate-shaped portion 21.
6 are provided respectively, and a depression H is formed on the upper surface of the plate-shaped portion 21. Although these rising portions 26, 26 are in contact with the inner surface of the U-shaped groove 7, they may be configured to extend along the inner surface of the U-shaped groove with a slight gap. Further, each locking portion 22, 2
2 and each of the rising portions 26, 26, flat portions 21z, 21z contacting both upper ends 7u, 7u of the U-shaped groove 7 from above.
Is provided.

A notch 27 is formed at one end of the plate-like portion 21 for inserting a finger or the like when the engaging portion 22 is attached / detached and replaced. A seam filter 31 is provided on one end side where the cutout portion 27 is provided so as to cover at least the open portion of the U-shaped groove 7. The ends of the U-shaped groove lid 20 on which the cutout portion 27 and the joint filter 31 are provided may be different from each other, but by providing the joint filter 31 and the cutout portion 27 on the same side, the adjacent U-shaped groove lid is provided. It is desirable to provide the cutout portion 27 and the seam filter 31 on the same side from the viewpoint that soil can be prevented from entering through the cutout portion 27 even if the distance between the two is increased.

FIG. 7 is a view showing a state in which the U-shaped groove lid 20 according to the fourth embodiment is attached to the U-shaped groove 7. As compared with the case of each of the above-described embodiments, the upper surface of the plate-shaped portion 21 is lowered, and the thickness of the embankment can be reduced. In this example of use, the sand e2 is placed in the depression H on the upper surface of the plate-like portion 21, and the embankment e3 is further applied thereon.
Even if the plate-shaped portion 21 is slightly bent due to trampling, since the rising portion 26 that contacts substantially along the inner surface of the U-shaped groove 7 is interposed between the locking portion 22 and the plate-shaped portion 21, the locking is performed. It becomes difficult for the portion 22 to come off from the above-mentioned U-shaped groove upper end 7u, and as a result, the stepping durability of the U-shaped groove lid 20 is further improved.

FIG. 8 shows a state in which a large number of plate-like portions 21 according to this embodiment are arranged. A seam filter 31 is arranged between the U-shaped groove covers 20 and 20 to prevent the embankment or the like from intruding downward. When removing the U-shaped groove lid 20, the joint filter 31 is rolled up, and then a finger or the like is inserted into the cutout portion 27 to easily remove the U-shaped groove lid 20.
It is possible to lift. In this case, the joint filter 31 is not damaged, and drainage using the cutout portion 27 and the joint filter 31 becomes smoother.

The filters 24 and 31 used in the present invention are
In addition to using the resin filter material as described above, a rough non-woven fabric using pulp or the like can be used. In addition, as shown in FIG.
A mesh-shaped support member 24b made of nylon resin, polypropylene resin, or the like may be attached to one surface of a. In this way, by adhering the support member 24b to the filter member 24a, it is possible to withstand a larger earth pressure through the through hole 23, the end of the U-shaped groove lid 20, the notch 27, and the like. Become.

By the way, in each of the U-shaped groove lids 20 described above, since the intermediate portion of the plate-like portion 21 is formed flat,
When the central portion of the lid 20 with respect to the width direction Y is slightly curved downward due to long-term use and the through hole 23 is not located near the lower end of the curve, the drainage performance via the through hole 23 may be reduced. is there. The fifth embodiment of the present invention shown in FIGS. 10 and 11 prevents deterioration of drainage performance due to deformation.

In the fifth embodiment, the central portion of the plate portion 21 in the width direction Y or the vicinity thereof is projected upward, and the raised portion 21x is formed along the longitudinal direction X. Also,
The raised portion 21x and both locking portions 22, 2 in the plate-shaped portion 21
The space between the two is bent downward to form a pair of recesses 21y, 21y.
Are formed along the longitudinal direction X. Furthermore, each locking part 2
2, 22 and the concave portions 21y, 21y are provided with a U-shaped groove 7
Flat parts 21z, which come into contact with both upper ends 7u, 7u from above,
21z is provided.

The aforementioned plurality of through holes 23 are formed along the bottom of the recess 21y. According to this configuration, the plate-shaped portion 21
Protruding part 21x in the center or in the vicinity even if you step on
Always project upwards. Therefore, the embankment e1
Water that permeates into the plate-shaped portion 21 side through the water is collected in the through hole 23 at the bottom of each recess 21 y and is reliably guided into the U-shaped groove 7. In addition, since the through hole 23 does not exist in the raised portion 21x where bending stress acts most and in the vicinity thereof, the structural durability is also excellent.

The raised portion 21x and the recessed portion 21y are not limited to the shapes shown in FIG. For example, in the sixth embodiment shown in FIG. 12, the plate-like portion 21 is curvedly bent to form a raised portion 21x.
And a concave portion 21y are formed.

In the seventh embodiment shown in FIG. 13, the U-shaped groove lid 20 of the fifth embodiment is provided with a pair of rising portions 26, 26 according to the above fourth embodiment to form a recess H. Is. In the present embodiment, the lower end of the rising portion 26 has the U-shaped groove 7 due to the stepping near the central portion of the plate-shaped portion 21.
Abut on the inner surface along the up-down direction and stretch in the width direction Y.
By this strut, the deformation of the plate-shaped portion 21 due to the stepping on is further suppressed. The rising part 2
6 and the upper and lower inner surfaces of the U-shaped groove 7 do not necessarily have to be in contact with each other from the beginning of mounting the lid 20, and it is sufficient if there is a possibility of contact due to deformation of the plate-shaped portion 21.

U-shaped groove lid 2 of the eighth embodiment shown in FIG.
At 0, the bottoms of the left and right recesses 21y, 21y are respectively displaced to both end sides in the width direction Y, and are displaced to the lower portion of the rising portion 26, that is, the boundary portion with the inner surface of the U-shaped groove 7 along the vertical direction. Is different. In this way, each recess 21
By displacing y and 21y in the width direction, no matter which part of the plate-shaped portion 21 is stepped on, the lower part of the rising portion 26 comes into contact with the inner surface of the U-shaped groove 7 along the vertical direction, which is further advantageous in terms of strength. Becomes The rising portion 26 in the above seventh and eighth embodiments is considerably shortened in the up-down direction so that the rising portion 26 functions as abutting when the plate-shaped portion 21 is stepped on. May be. That is, it is possible to make the depression H shallow so that almost nothing corresponding to the sand e2 is accumulated.

In the U-shaped groove lid 20 according to the ninth embodiment shown in FIGS. 16 and 17, a reinforcing plate 40 for imparting durability against bending of the plate portion 21 is illustrated. A pair of protrusions 41, 41 is formed on the upper portion of the reinforcing plate 40 in the width direction while straddling the raised portion 21x located at the center of the U-shaped groove lid 20.
41 is projected. Further, the upper surface of the reinforcing plate 40 is formed along the lower surface of the U-shaped groove lid 20, and in particular, at least the central portion thereof is configured as a reinforcing edge 42 that contacts the lower surface of the plate-shaped portion 21. Recesses 21y and 21y of the plate portion 21
Mounting holes 2 for inserting the protrusions 41 respectively on the bottom surface.
8 and 28 are formed.

Notches are formed at the tips of the protrusions 41. As shown in FIG. 17A, the protrusions 41 are inserted into the mounting holes 28 and the reinforcing edges 42 are brought into contact with the lower surface of the plate-like portion 21. Hit Next, a tool is inserted into the notch of the protrusion 41 and the protrusion 41 is caulked as shown in FIG. 17 (b). By this caulking, the reinforcing plate 40 is connected to the U-shaped groove lid 20, and the plate-shaped portion 21 is brought into contact with the reinforcing edge 42 to prevent the plate-shaped portion 21 from bending.

It should be noted that not only stainless steel plates or steel plates but also synthetic resins such as polycarbonate can be used for the above-mentioned plate-like parts and locking parts. As the embankment on the upper surface of the U-shaped groove lid, water-permeable members such as soil, sand, and pebbles as well as plants and artificial grass can be used.

[0039]

As described above, according to the above-mentioned features of the present invention, the U-shaped groove lid can be manufactured at a low cost with a simple structure in which the plate portion is provided with the engaging portion, the through hole and the filter. Since the stoppers are locked to both upper ends of the U-shaped groove from the outside and the intermittent through holes prevent the plate-shaped portion itself from being deteriorated in strength, it is possible to improve durability against stepping. In addition, it is difficult for dirt and the like on the upper part to fall inside the U-shaped groove during replacement, and the upper part of the existing U-shaped groove can be blocked while maintaining water permeability. As a result, it has become possible to maintain the drainage performance of the U-shaped groove, prevent the accumulation of sediment and the like in the U-shaped groove, and effectively expand the garden of the detached house.

In particular, it is possible to further improve the durability of stepping by the projecting portion located in the central portion in the width direction and the pair of concave portions located on both sides thereof. Further, by providing the through hole at the bottom of the recess, it is possible to further improve the drainage performance and the durability.

In addition, the U adjacent to each other due to the overhanging portion and the filter.
It has become possible to prevent soil from entering the U-shaped groove from between the groove-shaped lids and to further improve the water permeability by utilizing the filters located in these adjacent portions.

Further, the rising portion makes it more difficult for the locking portion to be disengaged from both upper ends of the U-shaped groove, the durability against the stepping is improved, and the plate-shaped portion hangs down. It became easier to apply. In particular, the rising part, together with the protruding part, has made it possible to further enhance the durability against treading.

The reference numerals in the claims are merely for the convenience of comparison with the drawings, and the present invention is not limited to the configurations of the accompanying drawings by the reference. .

[Brief description of drawings]

FIG. 1 is a plan view showing an outline of a group of detached houses with a garden.

FIG. 2 is an exploded perspective view of a U-shaped groove lid according to the first embodiment.

FIG. 3 is a vertical cross-sectional view showing a state after construction in which the lid for the U-shaped groove is attached to the U-shaped groove.

FIG. 4 is a perspective view of a U-shaped groove lid according to a second embodiment with a filter omitted.

FIG. 5 is an exploded perspective view showing a relationship between a U-shaped groove lid and a U-shaped groove end portion according to a third embodiment.

FIG. 6 is a perspective view of a U-shaped groove lid according to a fourth embodiment.

FIG. 7 is a view corresponding to FIG. 3 showing a usage state of the U-shaped groove lid according to the fourth embodiment.

FIG. 8 is a vertical cross-sectional view showing a manner of arranging U-shaped groove lids according to the fourth embodiment.

FIG. 9 is an exploded perspective view showing another embodiment of the filter.

FIG. 10 is an exploded perspective view of a U-shaped groove lid according to a fifth embodiment.

FIG. 11 is a vertical cross-sectional view showing a state after construction in which the U-shaped groove lid according to the fourth embodiment is attached to the U-shaped groove.

FIG. 12 is a vertical cross-sectional view showing a state after construction in which the U-shaped groove lid according to the sixth embodiment is attached to the U-shaped groove.

FIG. 13 is a vertical cross-sectional view showing a state after construction in which the U-shaped groove lid according to the seventh embodiment is attached to the U-shaped groove.

FIG. 14 is a vertical cross-sectional view showing a state after construction in which the U-shaped groove lid according to the eighth embodiment is attached to the U-shaped groove.

FIG. 15 is an exploded perspective view of a main part of a U-shaped groove lid according to an eighth embodiment.

FIG. 16 is an exploded perspective view of a main part of a U-shaped groove lid according to a ninth embodiment.

FIG. 17 is a vertical cross-sectional view showing the assembling procedure of the U-shaped groove lid according to the ninth embodiment, in which FIG.
(B) shows the state after attaching the reinforcing plate.

[Explanation of symbols]

 1 Group of detached houses with garden 2a-c Superior side site 3a-c Lower side site 4 Boundary wall 5 Ishigaki 6 House 7 U-shaped groove 7u Upper end of U-shaped groove 8 Manhole 9 Discharge underground groove 10 Roadside underground groove 20 For U-shaped groove Lid 21 Plate portion 21a Overhanging portion 21b Rear end portion 21x Raised portion 21y Recessed portion 21y Recessed portion 21z Flat portion 22 Locking portion 23 Through hole 24 Filter 24a Filter material 24b Supporting material 26 Rising portion 27 Notch portion 28 Mounting hole 31 Seam filter 40 Reinforcement Plate 41 Protrusion 42 Reinforcement edge E Soil e1 Fill e2 Sand e3 Fill F Pressure H Depression U U-shaped groove Ue Terminal part Ut Bent part X Longitudinal direction Y Width direction.

Claims (9)

[Claims] 1. A plate-shaped portion (2) is provided with locking portions (22, 22) which are locked to both upper ends (7u, 7u) of the U-shaped groove (7) from the outside.
1) A plurality of through holes (23) are intermittently formed in the plate-like portion (21) by projecting downward from both side edges in the width direction (Y), and the upper part of the through hole (23). A lid for a U-shaped groove in which a water-permeable filter (24) is provided. 2. A ridge (21x) is formed along the longitudinal direction (X) of the plate-like portion (21) at or near the center of the plate-like portion (21) in the width direction (Y). , A pair of recesses (21y, 21b) between the raised portion (21x) and both locking portions (22, 22) of the plate-like portion (21).
21y) is formed along the said longitudinal direction (X), The lid for U-shaped groove | channel of Claim 1 characterized by the above-mentioned. 3. The through hole (23) is formed in the recess (21).
The U-shaped groove lid according to claim 2, which is provided at the bottom of y). 4. A flat part which abuts on both upper ends (7u, 7u) of the U-shaped groove (7) from above from between the respective locking parts (22, 22) and the respective concave parts (21y, 21y). 21z, 2
1z) is provided, The lid for U-shaped groove | channel in any one of Claim 2 or 3. 5. A projecting portion (21a) that overlaps with the plate-shaped portion (21) of the other U-shaped groove lid from one of both end edges in the longitudinal direction (X) of the plate-shaped portion (21). The U-shaped groove lid according to claim 1 or 2, further comprising: 6. The plate (21) is provided with the filter (31) on at least one of both ends thereof, and is provided with a notch (27) on at least one of both ends thereof. The U-shaped groove lid according to claim 1. 7. The locking portion (22) and the plate-shaped portion (2)
The U-shaped groove lid according to any one of claims 1 to 6, wherein a rising portion (26) for suspending the plate-shaped portion is provided between the lid and the groove (1). 8. The filter (24, 31) comprises a filter material (24a) such as a non-woven fabric and a support member (24b) having a stitch shape.
The lid for U-shaped groove according to any one of claims 1 to 7, which is obtained by bonding and. 9. A U-shaped groove closing method using the U-shaped groove lid according to any one of claims 1 to 8, wherein both upper ends (7u, 7u) of the U-shaped groove (7) are provided. The U-shaped groove lids (20) are arranged side by side in a state in which the locking portions (22) are locked, and soil is placed on the arranged U-shaped groove covers (20).
A method of closing a U-shaped groove that is filled with sand, pebbles, plants, etc. (e1 to e3).