JP4583215B2 - Rainwater outflow control drainage channel structure - Google Patents

Description

  The present invention relates to a rainwater outflow suppression drainage channel structure that drains or permeates rainwater and the like, and particularly relates to a rainwater outflow suppression drainage channel structure that can efficiently remove sand and the like flowing in with rainwater.

  Conventionally, a drainage channel structure as shown in FIG. 11 is known.

  First, from the configuration, in this conventional drainage channel structure, the side grooves 2 and 2 provided on the side of the road 1 are connected to the grating portions 3a and 3a and the communication pipes 3b and 3b embedded in the ground. A culvert 4 as a drainage channel or a ridge 5 having a concave cross section that opens a portion exposed from the ground surface G is communicated.

  These underdrains 4 or open pits 5 are configured to collect rainwater 6 or household wastewater 8 discharged from the house 7 and guide it to the river 9 or a sewage treatment facility (not shown).

  Further, as shown in FIGS. 12 and 13, it is also known that a plurality of slits 12 are notched at regular intervals on the upper edge 11 of the side wall of the U-shaped block 10 constituting the side groove. (For example, refer to Patent Document 1).

  In such a case, a water-permeable filter material 13 made of chestnut stone or the like is disposed in each slit 12 of the plurality of U-shaped blocks 10 that are connected to the underground UG and embedded therein, It is configured to guide the rain to the drainage pavement road 14 composed of the permeable surface layer 15 and the impermeable base layer 16 into the U-shaped block 10.

  Next, the effect | action of this conventional rainwater outflow suppression drainage channel structure is demonstrated.

  In the conventional U-shaped block 10 configured as described above, the rain water flowing down the drainage pavement road 14 is guided into the U-shaped block 10 together with the rain water from above by the rain.

Then, it is guided to the river 9 or a sewage treatment facility (not shown) through the underdrain 4 or the open channel 5.
Japanese Patent Laid-Open No. 11-148165 (paragraphs 0010 to 0034, FIGS. 1 to 37)

  However, in such a conventional drainage channel structure, when the flow rate increases due to heavy rain, rainwater flows into the river 9 or a sewage treatment facility (not shown) at one time, and the treatment cannot be performed, and the function is deteriorated or flooded. It was a factor.

  In large-scale residential land development sites, regulating ponds are created at intervals and scales commensurate with the development area.

  In such a regulation pond, the storage wall, the infiltration facility, and both of these storage and infiltration functions were combined by covering the wall surface of the storage part with different types of infiltration sheets and temporarily storing water. It functions as a storage and infiltration facility.

  However, in such a regulating pond, sand and sludge that have passed through the inflow portion into which rainwater flows are deposited and accumulated on the bottom surface of the facility during long-term use.

  These accumulated sand and sludge are difficult to remove from the bottom of the facility, and the amount of rainwater that can be stored decreases as the amount of accumulation increases.

  Moreover, the water-permeable sheet may be clogged by accumulated sand and sludge, and the function as a storage and penetration facility may be impaired.

  Then, this invention makes it the subject to provide the rainwater outflow suppression drainage channel structure which can temporarily store rainwater without requiring the installation space of a large area like a regulation pond, and has favorable maintainability.

In order to achieve the above object, the invention described in claim 1 is formed along a direction in which the drainage channel is formed by continuously connecting a water guide groove block that guides and drains rainwater and the like. A plurality of filling members arranged side by side along the longitudinal direction in the storage space provided with a permeation trough connected in a stacked manner along the vertical direction, the permeation trough and the drainage channel A communicating portion is provided between the drainage channel to allow rainwater to flow out to the seepage trough , and the filling member is provided with a slope portion for allowing rainwater to flow down in a certain direction. It is characterized by a rainwater outflow suppression drainage channel structure in which the inclination direction and the drainage direction of the drainage channel are the same .

Furthermore, those described in claim 2, wherein the filler member made of synthetic resin material in vertical and horizontal or vertical direction rainwater outflow inhibition drainage structure according to claim 1 which is connectable formed with other filling member It is characterized by.

Moreover, what was described in Claim 3 has the said communication part formed in the side surface of the said water conveyance groove block, and has a slit which can adjust the overflow flow from the said drainage channel, The rainwater of Claim 1 or 2 It features a drainage control drainage structure.

Then, those described in claim 4, the formation position of the slit than the bottom portion of the drainage channel, as characterized runoff suppression drainage structure is set to a higher position in the vertical direction according to claim 3 Symbol placement Yes.

Furthermore, what is described in Claim 5 has the composite manhole part formed so that it may be enclosed by the surrounding wall over the said drainage channel and the said osmosis | permeation trough part, and the said communication part is provided in this composite manhole part. The rainwater outflow suppression drainage channel structure according to claim 1, which is constituted by a formed weir.

Also, those described in claim 6, in the direction rainwater by slant portion provided in said filling member flows down, of the claims 1 to 4 provided with a manhole which communicates with a portion of the penetrating sewer section The rainwater outflow suppression drainage channel structure according to any one of the above features.

  According to the first aspect of the present invention configured as described above, when rainwater is collected by the rain into the drainage channel formed by the water guide groove block, the drainage channel and the seepage trough portion A communication portion provided therebetween causes rainwater in the drainage channel to flow out to the seepage trough.

  In the seepage trough, the rainwater that has flowed in is temporarily stored in the seepage trough and gradually penetrates into the ground.

  For this reason, since the amount of rainwater flowing down to the river or the sewage treatment facility or the like can be reduced through the drainage channel, the possibility of the function deterioration of the sewage treatment facility or the flooding of the river is reduced.

  In addition, since a plurality of filling members are continuously provided in the storage space of the penetrating ridge portion, even if the upper portion of the storage space is a facility such as a road, the filling member can be supported from below.

  For this reason, unlike the conventional adjustment pond, a separate installation space having a large area is not required. For example, a space that is not normally used, such as in the ground of a road shoulder, can be used effectively, and the space efficiency is good.

Further, the inclined surface formed on the front Symbol filling member, rainwater, is flow down in a certain direction, the sand or sludge is derived with the flow of rain water can be collected in one place.

  For this reason, since the collected sand, sludge, etc. should just be removed in one place, maintainability is favorable.

Furthermore, the one described in claim 2, wherein the filling member, which is configured of a synthetic resin material, by being formed in a predetermined size, no increasing the weight, transportability It is good. And at the construction site, it can be easily and stably installed in the storage space of the seepage ridge by combining with other filling members in the vertical and horizontal directions or in the vertical direction.

  For this reason, workability is good.

And what is described in Claim 3 adjusts a water flow rate with the slit provided in the side surface of the said water conveyance groove block.

  For this reason, since the water flow rate can be easily adjusted by the height position and the opening area of the slit, the workability is good.

Moreover, since the formation position of the said slit is set to the position higher in the perpendicular direction than the bottom face part of the said drainage channel, what was described in Claim 4 is comparatively sand, sludge, etc. It is possible to overflow rainwater with little crossing.

  For this reason, the maintenance interval can be expanded by reducing the amount of hybrids such as sand or sludge that flows into the seepage trough.

Further, according to the fifth aspect of the present invention, an operator enters the drainage channel and the seepage trough from the composite manhole portion, and removes hybrids such as sand or sludge accumulated in the seepage trough or the like. can do.

And since what is described in Claim 6 collects hybrids, such as sand or sludge, in the manhole provided in the direction in which rainwater flows down by the slope part provided in the said filling member, maintenance property is good. It is even better.

  Next, a rainwater outflow suppression drainage channel structure according to the best mode for carrying out the present invention will be described with reference to the drawings.

  In addition, the same code | symbol is attached | subjected and demonstrated about the same or equivalent part as the said prior art example.

  1 to 10 illustrate a rainwater outflow suppression drainage channel structure 13 according to an embodiment of the present invention.

  First, the configuration will be described. As shown in FIG. 2, the rainwater outflow suppression drainage channel structure 13 is embedded in the gutters 3a and 3a and the ground in the side grooves 2 and 2 provided on the side of the road 101. Via the communication pipes 3b and 3b, a culvert 14 as a drainage channel or an opening 15 having a concave cross section that opens a portion exposed from the ground surface G is communicated.

  These underdrains 14 or open pits 15 are configured to collect rainwater 6 or miscellaneous household wastewater 8 discharged from the house 7 and guide it to the river 9 or a sewage treatment facility (not shown).

  In addition, penetrating gutters 16 and 16 are formed alongside the underglow 14 and the open gutter 15.

  The seepage trough 16 is mainly configured by a plurality of filling members 18 being continuously provided in a storage space 17 formed adjacently along the connecting direction of the underdrain 14.

  In Example 1 of this embodiment shown in FIG. 1 to FIG. 5, the drainage channel will mainly be described with respect to the configuration of the stormwater outflow suppression drainage channel structure 13 on the underdrain 14 side. Since it is substantially the same as the structure of the underdrain 14 side, description is abbreviate | omitted.

  In the rainwater outflow suppression drainage channel structure 13 of the first embodiment, as shown in FIG. 1, the underdrain 14 is configured by connecting a plurality of box culvert members 14 a.

  These box culvert members 14a are made of hollow rectangular concrete, and the inside is connected so as to exhibit a hollow space having a long tunnel shape, thereby forming a drainage channel space for circulating rainwater in the underdrain 14. Has been.

  A dam 19 is formed between the underdrains 14 and the seepage troughs 16 as a communication part that allows the rainwater in the underdrains 14 to flow out to the infiltration troughs 16 and adjusts the amount of flowing water.

  The upper edge position of the weir 19 in the first embodiment is set to be higher in the vertical direction than the bottom surface portion 14 b of the drainage channel 14 and lower than the upper surface portion 14 c of the underdrain 14. Yes.

  And the composite manhole part 20 which has this dam 19 inside is provided. The composite manhole section 20 is surrounded by substantially four sides by a peripheral wall 21 interposed so as to straddle part of the culvert 14 and part of the penetrating ridge part 16, and an operator can enter the internal space 22. The size is set.

  Drain passage communication holes 21 a and 21 a communicating with the space inside the underdrain 14 and permeation space communication holes 21 b and 21 b communicating with the storage space 17 of the permeation trough 16 are formed in the peripheral wall. Among these, the grating 23 is attached to the permeation space communication hole 21b.

  Next, the structure of the filling members 18 provided continuously in the storage space 17 of the first embodiment will be described in detail.

  As shown in FIGS. 4 and 5, the filling member 18 according to the first embodiment is made of a synthetic resin material such as polypropylene, and has a certain inclination angle (about about 1 in this first embodiment). A tilted plate portion 18a having a substantially square shape when viewed from above, and other filling members 18 which are integrally formed at the four corners of the tilted plate portion 18a and are continuously provided at the upper portion, and a reinforcing member which will be described later It has mainly four supporting leg portions 18b, 18b,... That support loads such as 30, 30, and so on.

  Of these, the inclined plate portion 18a has a side of about 0.5 to 1.2 m and a thickness of about 4 to 5 mm, and is configured to have a size and weight that can be carried by human power. Depending on the angle, the inflowing rainwater is guided in a predetermined direction s indicated by an arrow in FIG. 4 so that the supporting leg column 18b on the opposite side from between the supporting leg columns 18b, 18b located at both corners of one side. , 18b are fixed in an inclined state so as to descend.

  As shown in FIG. 5, a plurality of reinforcing rib portions 18 c... Having a lattice shape are formed on the back surface side of the inclined plate portion 18 a by being erected so as to be integrated vertically and horizontally at a predetermined interval. Has been.

  The supporting leg column portions 18b each have a substantially right-angled isosceles triangle shape, are fitted inside the upper column portion 18d having a triangular cylindrical column shape, and are connected in a substantially triangular shape so that they can be connected to each other. A lower column portion 18e is formed in which a piece is erected.

  Further, in the first embodiment, as shown in FIG. 3, it is mounted between the support leg portions 18 b, 18 b of the filling members 18, 18 arranged vertically, and the height position of the inclined plate portion 18 a. Are provided with connecting members 28.

  The connecting member 28 has a triangular prism shape having a substantially right isosceles triangle shape when viewed from above, and an upper connecting portion 28a in which the lower column portion 18e is fitted and connected and a lower connection in which the upper column portion 18d is externally fitted. The part 28b is provided integrally.

  Further, the connecting member 28 has a projection 28c protruding from one of the two perpendicular surfaces 28e and 28f that are orthogonal to each other on one of the vertical surfaces 28e.

  Further, of the two orthogonal vertical surfaces 28e and 28f on the outside of the connecting member 28, the other vertical surface 28f is inserted and fitted with the joint convex portion 28c of another connecting member 28 arranged adjacent thereto. The joint hole 28d to be attached is formed as an opening, and is configured to be connectable by engaging the joint projection 28c of another connecting member 28 disposed adjacent thereto.

  And among these filling members 18..., The flat reinforcing members 30 corresponding to the respective filling members 18 are individually positioned immediately above the filling members 18 that are positioned at the uppermost portion and arranged in parallel in the vertical and horizontal directions. It is placed.

  The reinforcing member 30 of the first embodiment is made of a synthetic resin material such as polypropylene, and has a substantially square horizontal plate portion 30a as viewed from above, and a connecting plate portion welded to the back side of the horizontal plate portion 30a. 30b.

  Of these, the horizontal plate portion 30a has a side of about 0.5 to 1.2 m, is approximately the same size as the inclined plate portion 18a of the filling member 18, and can be easily applied even when an overload is applied from above. It has a predetermined thickness that does not bend (in this embodiment 1, approximately 4 to 5 cm or more), and is configured to have a size and weight that can be carried by human power.

  In addition, a plurality of small holes are formed in the horizontal plate portion 30a at predetermined intervals so that air and rainwater communicate with each other in the vertical direction.

  The connecting plate portions 30b are connected to upper column portions 18d of the filling member 18 by interposing upper connecting members 29 in connection openings of substantially right-angled isosceles triangles formed at the four corners on the lower surface side. It can be connected.

  The upper connecting member 29 has a hollow triangular prism shape having a substantially right triangle shape in a top view. Further, on the upper and lower side surfaces of the upper connecting member 29, fitting portions 29a and 29a are fitted and connected to the connecting portion 30b of the reinforcing member 30 or the upper column portion 18b of the filling member 18. Are formed respectively.

  Further, a flange portion 29b is formed between the fitting portions 29a and 29a.

  And in this Example 1, as shown in FIG. 1, while the said filling member 18 ... is laminated | stacked and connected along an up-down direction, it is arranged in parallel along the longitudinal direction of the said storage space 17. As shown in FIG. Are connected.

  A U-shaped groove 17 b is formed in the bottom surface portion 17 a of the storage space 17 so as to be positioned below these filling members 18.

  Next, the effect | action of the rainwater outflow suppression drainage structure of this Example 1 is demonstrated.

  In the rainwater outflow suppression drainage structure 13 of Example 1 configured in this way, when rainwater is collected in a drainage channel such as a culvert 14 or an open channel 15 formed by the box culvert member 14a due to rainfall, The rainwater in the underdrain 14 that cannot flow down temporarily increases the water level, and the weir 19 in the composite manhole section 20 provided between the underdrain 14 or the open end 15 and the seepage trough 16. Overflow and flow out in the direction of the penetrating saddle 16.

  In the seepage trough 16, the rainwater that has flowed in is temporarily stored in the seepage trough 16 and gradually permeates the surrounding underground UG.

  For this reason, since the amount of rainwater flowing down directly into the river or the sewage treatment facility or the like can be reduced through the underdrain 14, the possibility of deterioration of the function of the sewage treatment facility or the flooding of the river is reduced.

  Further, a plurality of filling members 18 are continuously provided in the storage space 17 of the osmotic ridge portion 16, and the reinforcing members 30 are mounted on the upper surface portion as shown in FIG. Even if the upper part of the storage space 17 is a facility such as a road, it can be supported from below by these filling members 18.

  For this reason, unlike the conventional adjustment pond, a separate installation space having a large area is not required. For example, a space that is not normally used, such as in the ground of a road shoulder, can be used effectively, and the space efficiency is good.

  In addition, rainwater is caused to flow in a certain direction S by the inclined plate portion 18a as the inclined surface portion formed in the filling member 18, and sand or sludge is guided along with the flow of rainwater to be collected in one place. Can do.

  For this reason, since the collected sand, sludge, etc. should just be removed in one place, maintainability is favorable.

  Furthermore, since the filling member 18 is made of a synthetic resin material, it is formed in a predetermined size, so that the weight is not increased and the transportability is good.

  And, at the construction site, it is easily stabilized in the storage space 17 of the osmotic ridge portion 16 by being connected to the other filling member 18 via the connecting member 28 or the like in combination in the vertical and horizontal directions or in the vertical direction. Can be installed.

  For this reason, workability is good.

  Further, the water flow rate is adjusted by a weir 19 provided in a position corresponding to the side surface of the water guide groove block 14 a and in the composite manhole portion 20.

  For this reason, since the water flow rate can be easily adjusted by the height position and the opening area of the weir 19, the workability is good.

  Moreover, since the formation position of the weir 19 is set to a position higher in the vertical direction than the bottom surface portion 14b of the underdrain 14, the weir 19 overflows rainwater with relatively little hybridization such as sand or sludge. be able to.

  For this reason, the amount of hybrids such as sand or sludge that flows from the composite manhole portion 20 into the permeation trough portion 16 through the permeation space communication holes 21b and 21b is increased, and the maintenance interval is widened. be able to.

  Furthermore, in the first embodiment, a worker enters the culvert 14 and the penetrating trough 16 from the composite manhole section 20 and crosses such as sand or sludge accumulated in the penetrating trough 16 or the like. Can be removed. For this reason, the maintainability is even better.

  FIG. 6 shows a rainwater outflow suppression drainage channel structure according to Embodiment 2 of the present invention.

  The same or equivalent parts as in the first embodiment will be described with the same reference numerals.

  In the rainwater outflow suppression drainage channel structure 23 of the second embodiment, the rainwater in the underdrain 24 is infiltrated into the side wall 24b of the underdrain 24 located between the underdrain 24 as the drainage channel and the infiltration trough 26. A slit-like communication hole 24c is formed as a communication portion that can flow out and adjust the amount of flowing water.

  The upper edge position of the communication hole 24c of the second embodiment is set so as to be higher in the vertical direction than the bottom surface portion 24d of the culvert 24 and lower than the upper surface portion 24e of the culvert 24. Yes.

  Next, the effect of this Example 2 is demonstrated.

  In the rainwater outflow suppression drainage structure 23 of the second embodiment, when rainwater is collected in the underdrain 24 formed by the box culvert member 24a due to rain, the rainwater in the underdrain 24 that cannot flow down is temporarily The water level is increased to overcome the lower edge of the slit-like communication hole 24c of the side wall 24b provided between the underdrain 24 and the infiltration cage 26, and the inside of the infiltration cage 26 It flows out in the direction of the space 17.

  Other configurations and functions and effects are the same as those of the first embodiment, and a description thereof will be omitted.

  FIG. 7 shows a rainwater outflow suppression drainage channel structure according to Embodiment 3 of the present invention.

  In addition, the same code | symbol is attached | subjected and demonstrated about the same thru | or equivalent part as the said Examples 1,2.

  In the rainwater outflow suppression drainage channel structure 33 of the third embodiment, the rainwater in the underdrain 34 is infiltrated into the side wall 24b of the underdrain 34 located between the underdrain 34 as the drainage channel and the infiltration trough 26. A slit-like communication hole 24c is formed as a communication portion that can flow out and adjust the amount of flowing water.

  Between the filling members 18, 18 provided in the vertical direction, two connecting members 28, 28 are interposed in the vertical direction so as to be installed in the internal space 117. Yes.

  Next, the effect of this Example 3 is demonstrated.

  In the rainwater outflow suppression drainage channel structure 33 of the third embodiment, rainwater that has entered the direction of the internal space 117 inside the seepage ridge 36 over the lower edge of the slit-like communication hole 24c of the side wall 24b It is temporarily stored in the internal space 117.

  In the third embodiment, the number of the filling members 18 provided with the inclined plate portions 18a can be reduced as compared with the internal space 17 of the first embodiment, so that the volume that can be temporarily stored is increased. Can do.

  Other configurations and functions and effects are the same as those in the first and second embodiments, and a description thereof will be omitted.

  8 and 9 show a rainwater outflow suppression drainage channel structure according to Embodiment 4 of the present invention.

  The same or equivalent parts as in the first to third embodiments will be described with the same reference numerals.

  In the rainwater outflow control drainage channel structure of the fourth embodiment, the rainwater in the underdrain 24 is transferred to the permeation trough 26 on the side wall 24b of the underdrain 24 located between the underdrain 24 as a drainage channel and the permeation trough 43. A slit-shaped communication hole 24c is formed as a communication portion that allows the flowing water amount to be adjusted while flowing out.

  Further, the flow direction is aligned so that the direction S in which the rainwater flows down the inclined plate portion 18a provided in the filling member 18 is aligned with the direction in which the rainwater outflow suppression drainage channel structure 43 extends, and Has been.

  A square manhole 44 is provided at a part of the downstream side of the seepage ridge 43.

  The rectangular manhole portion 44 has substantially the same planar shape as the filling member 18 and the like, and a rectangular manhole body 44a from which an operator can take out sand or sludge from above, and a lower side surface of the rectangular manhole body 44a. And an invert flume member 46 through which the water passage space communicates with each other through the communication hole 45 formed therein.

  The concave bottom surface portion 46a of the invert flume member 46 is configured to be inclined at a certain angle from the left and right directions toward the V-shaped bottom groove at the substantially center of the concave bottom surface portion 46a so that sand or sludge is not easily accumulated. It has an inverted shape.

  Next, the effect | action of the rainwater outflow suppression drainage channel structure of this Example 4 is demonstrated.

  In the rainwater outflow suppression drainage channel structure of the fourth embodiment, in addition to the function and effect of the first embodiment, the direction S in which the rainwater flows on the inclined plate portion 18a provided in the filling member 18 is further the rainwater outflow. The flow-down direction is aligned so as to be in a straight line in the extending direction of the control drainage structure 43.

  For this reason, the rainwater that has entered the storage space 217 passes through the concave groove portion 46a of the invert flume member 46 through the rectangular manhole portion 44, and through the communication hole 45 formed in the lower side surface of the rectangular manhole body 44a. It flows into the lower space of the rectangular manhole body 44a.

  Therefore, since a hybrid such as sand or sludge is accumulated on the bottom surface of the lower space 44b of the square manhole body 44a, the operator can take out the sand or sludge from the top of the square manhole body 44a. I can do it.

  Therefore, the square manhole portion 44 can be installed with a smaller installation area than the composite manhole portion 20 of the first embodiment.

  Other configurations and operational effects are the same as those in the first to third embodiments, and thus the description thereof is omitted.

  FIG. 10 shows a rainwater outflow suppression drainage channel structure according to Embodiment 5 of the present invention.

  The same or equivalent parts as in the first to fourth embodiments will be described with the same reference numerals.

  In the rainwater outflow restraint drainage channel structure 53 of the fifth embodiment, the opening 15 as a drainage channel constituted by connecting a plurality of U-shaped block members 15a continuously, and the opening 15 and the seepage trough 56 The slit-like communication holes 15c as communication parts capable of adjusting the amount of flowing water to the side wall part 15b of the open bottle 15 that flows between the rainwater in the open bottle 15 to the seepage bottle part 56 and at a constant interval. A plurality are formed.

  Further, in the storage space 17 of the seepage trough 56, skeleton members 50 as filling members are stacked while changing their directions in the vertical direction and the orthogonal direction.

  These skeletal members 50 are configured such that mountain-shaped portions 51... And valley-shaped portions 52.

  In the rainwater outflow suppression drainage channel structure 53 of the fifth embodiment configured in this way, each of the mountain-shaped portions 51... And the valley-shaped portions 52 formed in the skeleton members 50. A space in which rainwater can be temporarily stored is formed in the gap by being engaged with the valley-shaped portions 52... And the mountain-shaped portions 51.

  For this reason, a certain amount of rainwater is temporarily stored in the infiltration trough 56 constituted by these skeleton members 50 stacked in the storage space 17 and gradually infiltrated into the surrounding underground UG.

  Other configurations and operational effects are the same as those of the first to fourth embodiments, and thus the description thereof is omitted.

  The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific configuration is not limited to this embodiment, and design changes that do not depart from the gist of the present invention are not limited to this embodiment. Included in the invention.

That is, in the rainwater outflow suppression drainage channel structure 13 of the first embodiment, the storage space 17 in which the filling member 18 is disposed on one side of the underdrain 14 is not particularly limited. Underdrain 14
Or the storage space 17 and the shape, quantity, and material of the filling member 18 etc. are not limited, such as providing the storage spaces 17 and 17 on both sides of the opening 15.

It is a partial cross-sectional perspective view explaining the structure in the state which removed the reinforcement member of the upper part of a filling member by the rainwater outflow suppression drainage channel structure of Example 1 of the best embodiment of this invention. 1 is a schematic vertical cross-sectional view of a drainage system using a rainwater outflow suppression drainage channel structure of Example 1. FIG. It is a disassembled perspective view explaining the structure of a filling member by the rainwater outflow suppression drainage channel structure of Example 1. FIG. It is a perspective view explaining the structure of a filling member by the rainwater outflow suppression drainage channel structure of Example 1. FIG. It is a perspective view explaining the structure of the back surface side of a filling member by the rainwater outflow suppression drainage channel structure of Example 1. FIG. It is a vertical cross-sectional view of the main part in the rainwater outflow suppression drainage structure of Example 2 of the embodiment of the present invention. It is a vertical cross section of the principal part in the rainwater outflow suppression drainage channel structure of Example 3 of an embodiment of the invention. It is a perspective view of a square manhole in the rainwater outflow suppression drainage channel structure of Example 4 of an embodiment of the invention. It is the typical top view which explained the composition of the rainwater outflow control drainage structure of Example 4 of an embodiment of the invention, and was seen from the upper part. It is a partial cross section perspective view of the underground burying part explaining the composition of the rainwater outflow suppression drainage channel structure of Example 5 of the embodiment of the present invention. The structure of the conventional drainage channel structure is demonstrated and it is a typical longitudinal cross-sectional view of a drainage system. It is a perspective view explaining the structure of the U-shaped block used for another conventional drainage channel structure. It is a vertical sectional view explaining a drainage system using a U-shaped block in other conventional drainage channel structures.

Explanation of symbols

13, 23, 33, 43, 53 Rainwater outflow control drainage channel 14, 24 Underdrain (drainage channel)
14a, 24a Box culvert member (water guide groove block)
15 Opening (drainage)
16, 26, 36, 56 Permeation trough 17, 117, 217 Storage space 18 Filling member 19 Weir (slit)
20 Complex Manhole Club (Manhole)
21 Peripheral wall 24c Communication hole (slit)
43 Square Manhole (Manhole)

Claims (6)

A plurality of water guide grooves that guide rainwater and the like are connected to form a drainage channel, and a plurality of parallelly arranged along the longitudinal direction in the storage space formed along the connecting direction of the drainage channel The filling member is provided with a seepage trough that is stacked and connected along the vertical direction. Between the seepage trough and the drainage channel, rainwater in the drainage channel flows out to the seepage trough. A possible communication portion is provided, and the filling member is formed with a slope portion for flowing rainwater in a certain direction, and the slope direction of the slope portion and the flow direction of the drainage channel are the same. Rainwater outflow suppression drainage channel structure. The rainwater outflow suppression drainage channel structure according to claim 1 , wherein the filling member is formed of a synthetic resin material so as to be connectable to other filling members in the vertical and horizontal directions or in the vertical direction . 3. The rainwater outflow suppression drainage channel structure according to claim 1 , wherein the communication part has a slit formed on a side surface of the water conduit groove block and capable of adjusting an overflow rate from the drainage channel. 4. The rainwater outflow suppression drainage channel structure according to claim 3, wherein the slit is formed at a position higher in the vertical direction than the bottom surface of the drainage channel. It has a composite manhole part formed by being surrounded by a peripheral wall straddling the drainage channel and the seepage trough part, and the communication part is constituted by a weir provided in the composite manhole part. The rainwater outflow suppression drainage channel structure according to claim 1 . Wherein in the direction rainwater by slant portion provided to flow down the filling member, the penetration culvert of claim 1 or rainwater as claimed in any one of the 4, characterized in part by providing a manhole which communicates with the Outflow control drainage structure.

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