JP2021119759A - Sediment outflow prevention structure of slope drain hole - Google Patents

Sediment outflow prevention structure of slope drain hole Download PDF

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JP2021119759A
JP2021119759A JP2020014245A JP2020014245A JP2021119759A JP 2021119759 A JP2021119759 A JP 2021119759A JP 2020014245 A JP2020014245 A JP 2020014245A JP 2020014245 A JP2020014245 A JP 2020014245A JP 2021119759 A JP2021119759 A JP 2021119759A
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weed
layer
slope
lattice body
drain hole
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JP7384680B2 (en
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勇美彦 田中
Yumihiko Tanaka
勇美彦 田中
拓弥 南澤
Takuya Minamisawa
拓弥 南澤
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Okumura Corp
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Abstract

To provide a sediment outflow prevention structure of a slope drain hole in which the weed damage and the bird/beast damage can be prevented.SOLUTION: A sediment outflow prevention structure of a slope drain hole of the present invention includes: a drain hole 3 provided in a slope protective layer 1, and capable of draining water from the ground to a slope surface 2b; a weed control sheet 5 provided so as to close an opening of the drain hole 3, and having water permeability; and a lattice body 6 provided so as to close the opening of the drain hole 3. Also, in the present invention, it is preferable that the weed control sheet 5 and the lattice body 6 are provided only in the periphery of the drain hole 3, and are not provided in the whole slope.SELECTED DRAWING: Figure 2

Description

本発明は、法面防護用コンクリートに設けられた水抜き孔の土砂流出防止構造に関する。 The present invention relates to a sediment outflow prevention structure for a drainage hole provided in concrete for slope protection.

従来、法面防護用コンクリートに水抜き孔を設けたものが知られている(例えば、特許文献1参照)。 Conventionally, it is known that concrete for slope protection is provided with a drain hole (see, for example, Patent Document 1).

特許第3345587号公報Japanese Patent No. 3345587

水抜き孔からの土砂の流出を防止すべく、コンクリートと地面との間に土砂流出防止シート(例えば、株式会社アルファオブジャパン製の吸出し防止シート(化繊繊維ESSタイプESS−10))を配置することが考えられる。 In order to prevent the outflow of earth and sand from the drainage hole, an earth and sand outflow prevention sheet (for example, a suction prevention sheet manufactured by Alpha of Japan Co., Ltd. (synthetic fiber ESS type ESS-10)) is placed between the concrete and the ground. Can be considered.

しかしながら、水抜き孔から草が生えて、法面の美観を保つべく草を抜くときに、土砂流出防止シートが破れてしまうという雑草被害が発生する虞がある。 However, when grass grows from the drainage hole and the grass is pulled out to maintain the aesthetic appearance of the slope, there is a risk of weed damage such as tearing of the sediment outflow prevention sheet.

また、水抜き孔から土砂流出防止シートをカラスが突っついたり、地面側からモグラが土砂流出シートを破ったりする鳥獣被害が発生する虞もある。 In addition, there is a risk of bird and beast damage such as a crow sticking to the sediment outflow prevention sheet from the drain hole or a mole breaking the sediment outflow sheet from the ground side.

これらの雑草被害や鳥獣被害により土砂流出シートが破れた場合、再度、土砂流出防止シートをコンクリートと地面との間に配置しなければならなくなり、面倒である。 If the sediment outflow sheet is torn due to these weed damage or bird and beast damage, the sediment outflow prevention sheet must be placed again between the concrete and the ground, which is troublesome.

本発明は、以上の点に鑑み、雑草被害や鳥獣被害を防止することができる法面水抜き孔の土砂流出防止構造を提供することを目的とする。 In view of the above points, it is an object of the present invention to provide a sediment outflow prevention structure for a slope drainage hole capable of preventing weed damage and bird and beast damage.

[1]上記目的を達成するため、本発明の法面水抜き孔の土砂流出防止構造は、
法面防護層に設けられ、地面からの水を法面表面に排出可能な水抜き孔と、
前記水抜き孔の開口を塞ぐように設けられた格子体と、
前記水抜き孔の開口を塞ぐように設けられた、通水性を有する防草シートと、
を備えることを特徴とする。
[1] In order to achieve the above object, the sediment outflow prevention structure of the slope drainage hole of the present invention is
A drain hole provided in the slope protection layer that allows water from the ground to be discharged to the slope surface,
A lattice body provided so as to close the opening of the drain hole, and
A water-permeable weed-proof sheet provided so as to close the opening of the drain hole, and
It is characterized by having.

本発明によれば、防草シートにより水抜き孔からの土砂流出を防ぎつつ雑草被害を防ぐことができ、また、格子体によって鳥獣被害を防止することができる。 According to the present invention, the weed-proof sheet can prevent weed damage while preventing the outflow of earth and sand from the drainage hole, and the lattice body can prevent bird and beast damage.

[2]また、本発明においては、前記防草シート及び前記格子体は、前記水抜き孔の周辺にのみ設けられ、法面全体には設けられていないことが好ましい。本発明によれば、防草シート及び格子体の量を抑えることができ、コストを抑えることができる。 [2] Further, in the present invention, it is preferable that the weed-proof sheet and the lattice body are provided only around the drainage hole and not on the entire slope. According to the present invention, the amount of the weed-proof sheet and the lattice body can be suppressed, and the cost can be suppressed.

[3]また、本発明においては、
前記防草シートは、第1防草シート層と、第2防草シート層とを備え、
前記格子体は、第1格子体層と、第2格子体層とを備え、
前記水抜き孔の地面側の端縁から地面に向かって、第1格子体層、第1防草シート層、第2格子体層、第2防草シート層、の順に配置されていることが好ましい。
[3] Further, in the present invention,
The weed-proof sheet includes a first weed-proof sheet layer and a second weed-proof sheet layer.
The lattice body includes a first lattice body layer and a second lattice body layer.
The first lattice body layer, the first weed control sheet layer, the second lattice body layer, and the second weed control sheet layer are arranged in this order from the edge of the drain hole on the ground side toward the ground. preferable.

本発明によれば、第1防草シート層が第1格子体層と第2格子体層との間に挟まれるため、水抜き孔からのカラスの突きや、地面からのモグラの引っ掻きなどによる第1防草シート層の鳥獣被害を、第1格子体層と第2格子体層が守ってくれる。 According to the present invention, since the first weed control sheet layer is sandwiched between the first lattice body layer and the second lattice body layer, a crow is thrust from a drain hole, a mole is scratched from the ground, and the like. The first lattice layer and the second lattice layer protect the birds and beasts of the first weed control sheet layer.

[4]また、本発明においては、
前記法面防護層は、複数のコンクリートブロックで構成され、
複数のコンクリートブロックの一部には、前記水抜き孔が設けられ、
水抜き孔が設けられたコンクリートブロックの接地面には、水抜き孔の開口を塞ぐように前記防草シートと前記格子体とが設けられていることが好ましい。
[4] Further, in the present invention,
The slope protection layer is composed of a plurality of concrete blocks.
The drain holes are provided in a part of the plurality of concrete blocks.
It is preferable that the weed-proof sheet and the lattice body are provided on the ground contact surface of the concrete block provided with the drainage hole so as to close the opening of the drainage hole.

本発明によれば、コンクリートブロックの接地面に設けられた防草シートにより水抜き孔からの土砂流出を防ぎつつ雑草被害を防ぐことができ、また、格子体によって鳥獣被害を防止することができる。 According to the present invention, a weed-proof sheet provided on the ground surface of a concrete block can prevent weed damage while preventing sediment from flowing out from a drain hole, and a lattice body can prevent bird and beast damage. ..

本発明の実施形態の法面防護層を模式的に示す説明図。Explanatory drawing which shows typically the slope protection layer of embodiment of this invention. 本実施形態の法面防護層の断面を模式的に示す説明図。The explanatory view which shows typically the cross section of the slope protection layer of this embodiment. 本実施形態のコンクリートブロックを模式的に示す説明図。The explanatory view which shows typically the concrete block of this embodiment.

図を参照して、本発明の実施形態の法面防護層に設けられた法面水抜き孔の土砂流出防止構造を説明する。 With reference to the figure, the sediment outflow prevention structure of the slope drainage hole provided in the slope protection layer of the embodiment of the present invention will be described.

図1の法面防護層1の模式図を参照して、法面防護層1は、斜面に複数のコンクリートブロック2を敷き詰めて構成されている。複数の三角形状のコンクリートブロック2のうちの一部には、水抜き孔3が設けられている。なお、コンクリートブロック2は三角形状に限らず、他の形状、例えば、四角形や五角形、六角形等であってもよい。 With reference to the schematic view of the slope protection layer 1 of FIG. 1, the slope protection layer 1 is configured by laying a plurality of concrete blocks 2 on the slope. A drain hole 3 is provided in a part of the plurality of triangular concrete blocks 2. The concrete block 2 is not limited to a triangular shape, and may have other shapes such as a quadrangle, a pentagon, and a hexagon.

図2の法面防護層1の断面図を参照して、法面を構成する土4の地面には、接地面2aが接触するようにコンクリートブロック2が配置されている。コンクリートブロック2に設けられた水抜き孔3は、接地面2aから表面2bへ貫通して設けられている。 With reference to the cross-sectional view of the slope protection layer 1 of FIG. 2, the concrete block 2 is arranged so that the ground contact surface 2a comes into contact with the ground of the soil 4 constituting the slope. The drainage hole 3 provided in the concrete block 2 is provided so as to penetrate from the ground contact surface 2a to the surface 2b.

コンクリートブロック2の接地面2aには、水抜き孔3の開口を塞ぐように、通水性を有する第1防草シート層5a、通水性を有する第2防草シート層5b、第1格子体層6a、第2格子体層6bが、水抜き孔3の端縁側である接地面2aから土4の地面に向かって、第1格子体層6a、第1防草シート層5a、第2格子体層6b、第2防草シート層5b、の順に設けられている。 On the ground plane 2a of the concrete block 2, a first weed-proof sheet layer 5a having water permeability, a second weed-proof sheet layer 5b having water permeability, and a first lattice body layer so as to close the opening of the drain hole 3 6a, the second lattice body layer 6b is from the ground contact surface 2a on the edge side of the drain hole 3 toward the ground of the soil 4, the first lattice body layer 6a, the first weed control sheet layer 5a, and the second lattice body. The layer 6b and the second weed control sheet layer 5b are provided in this order.

図3の分解図を参照して、第1防草シート層5aと第2防草シート層5bとで、本実施形態における通水性を有する防草シート5を構成し、第1格子体層6aと第2格子体層6bとで、本実施形態における格子体6を構成している。 With reference to the exploded view of FIG. 3, the first weed control sheet layer 5a and the second weed control sheet layer 5b constitute the water-permeable weed control sheet 5 in the present embodiment, and the first lattice body layer 6a is formed. And the second lattice body layer 6b constitute the lattice body 6 in the present embodiment.

防草シート5としては、雑草の光合成を抑えるべく遮光性が高いものが好ましく、例えば、東京インキ株式会社製のトレップ(登録商標)TT−130(厚さ0.5mm)を用いることができる。また、防草シート5としては、除草剤を備えたシートを用いてもよい。 The weed-proof sheet 5 preferably has a high light-shielding property in order to suppress photosynthesis of weeds. For example, Trep (registered trademark) TT-130 (thickness 0.5 mm) manufactured by Tokyo Ink Co., Ltd. can be used. Further, as the weed control sheet 5, a sheet provided with a herbicide may be used.

格子体6としては、スリットを備えるものや、金網、合成樹脂製網などを採用することができ、例えば、ステンレス製防虫網を用いることができる。なお、格子体6としては、防虫機能は必ずしも備えていなくてもよい。 As the lattice body 6, one having a slit, a wire net, a synthetic resin net, or the like can be adopted, and for example, a stainless steel insect repellent net can be used. The lattice body 6 does not necessarily have to have an insect repellent function.

第1防草シート層5aは、コンクリートブロック2の接地面2aとの間で、第1格子体層6aを挟むように接着剤で接地面2aに固定される。接着剤は、第1格子体層6aの隙間を介して接地面2aに第1防草シート層5aをしっかりと固定する。第2防草シート層5bは、第1防草シート層5aとの間で、第2格子体層6bを挟むように接薬剤で第1防草シート層5aに固定される。接着剤は、第2格子体層6bの隙間を介して第1防草シート層5aに第2防草シート層5bをしっかりと固定する。接着剤は、水抜き孔3を塞ぐことのないように接地面2aに付けられる。 The first weed-proof sheet layer 5a is fixed to the ground contact surface 2a with an adhesive so as to sandwich the first lattice body layer 6a with the ground contact surface 2a of the concrete block 2. The adhesive firmly fixes the first weed control sheet layer 5a to the ground contact surface 2a through the gap of the first lattice body layer 6a. The second weed control sheet layer 5b is fixed to the first weed control sheet layer 5a with an agent so as to sandwich the second lattice body layer 6b with the first weed control sheet layer 5a. The adhesive firmly fixes the second weed-proof sheet layer 5b to the first weed-proof sheet layer 5a through the gap of the second lattice body layer 6b. The adhesive is applied to the ground plane 2a so as not to block the drain hole 3.

本実施形態の法面水抜き孔の土砂流出防止構造によれば、防草シートにより水抜き孔からの土砂流出を防ぎつつ雑草被害を防ぐことができ、また、格子体によって鳥獣被害を防止することができる。 According to the sediment outflow prevention structure of the slope drainage hole of the present embodiment, weed damage can be prevented while preventing sediment outflow from the drainage hole by the weed control sheet, and bird and beast damage is prevented by the lattice body. be able to.

また、防草シート5及び格子体6は、水抜き孔3の周辺にのみ設けられ、法面全体には設けられていない。このため、防草シート5及び格子体6の使用量を抑えることができ、法面防護層の設置コストを抑えることができる。 Further, the weed-proof sheet 5 and the lattice body 6 are provided only around the drain hole 3, and are not provided on the entire slope. Therefore, the amount of the weed-proof sheet 5 and the lattice body 6 used can be suppressed, and the installation cost of the slope protection layer can be suppressed.

また、本実施形態によれば、第1防草シート層5aが第1格子体層6aと第2格子体層6bとの間に挟まれるため、水抜き孔3からのカラスの突きや、土4の地面からのモグラの引っ掻きなどによる第1防草シート層5aの鳥獣被害を、第1格子体層6aと第2格子体層6bが守ってくれる。 Further, according to the present embodiment, since the first weed control sheet layer 5a is sandwiched between the first lattice body layer 6a and the second lattice body layer 6b, the crow thrust from the drain hole 3 and the soil The first lattice body layer 6a and the second lattice body layer 6b protect the birds and beasts of the first weed control sheet layer 5a due to scratching of moles from the ground of No. 4.

なお、本実施形態においては、第2格子体層6bの固定方法として、第1防草シート層5aと第2防草シート層5bとの間で接着剤を用いて固定することにより、法面防護層の構成種別の増加を抑えたものを説明した。しかしながら、本発明の第2格子体層6bの固定方法はこれに限らず、例えば、第2防草シート層5bに代えて、第2格子体層6bを第1防草シート層5aに固定するための固定具を別途用意してもよい。 In the present embodiment, as a method of fixing the second lattice body layer 6b, the slope is fixed by using an adhesive between the first weed control sheet layer 5a and the second weed control sheet layer 5b. The one that suppresses the increase in the composition type of the protective layer was explained. However, the method for fixing the second lattice body layer 6b of the present invention is not limited to this, and for example, the second lattice body layer 6b is fixed to the first weed control sheet layer 5a instead of the second weed control sheet layer 5b. Fixtures for this may be prepared separately.

1 法面防護層
2 コンクリートブロック
2a 接地面
2b 表面
3 水抜き孔
4 土
5 防草シート
5a 第1防草シート層
5b 第2防草シート層
6 格子体
6a 第1格子体層
6b 第2格子体層
1 Slope protection layer 2 Concrete block 2a Ground surface 2b Surface 3 Drainage hole 4 Soil 5 Weed-proof sheet 5a 1st weed-proof sheet layer 5b 2nd weed-proof sheet layer 6 Lattice body 6a 1st lattice body layer 6b 2nd lattice Body layer

Claims (4)

法面防護層に設けられ、地面からの水を法面表面に排出可能な水抜き孔と、
前記水抜き孔の開口を塞ぐように設けられた格子体と、
前記水抜き孔の開口を塞ぐように設けられた、通水性を有する防草シートと、
を備えることを特徴とする法面水抜き孔の土砂流出防止構造。
A drain hole provided in the slope protection layer that allows water from the ground to be discharged to the slope surface,
A lattice body provided so as to close the opening of the drain hole, and
A water-permeable weed-proof sheet provided so as to close the opening of the drain hole, and
A sediment outflow prevention structure for slope drainage holes, which is characterized by being provided with.
請求項1に記載の法面水抜き孔の土砂流出防止構造であって、
前記防草シート及び前記格子体は、前記水抜き孔の周辺にのみ設けられ、法面全体には設けられていないことを特徴とする法面水抜き孔の土砂流出防止構造。
The sediment outflow prevention structure of the slope drainage hole according to claim 1.
The sediment outflow prevention structure of the slope drainage hole, characterized in that the weed-proof sheet and the lattice body are provided only around the drainage hole and are not provided on the entire slope.
請求項1または請求項2に記載の法面水抜き孔の土砂流出防止構造であって、
前記防草シートは、第1防草シート層と、第2防草シート層とを備え、
前記格子体は、第1格子体層と、第2格子体層とを備え、
前記水抜き孔の地面側の端縁から地面に向かって、第1格子体層、第1防草シート層、第2格子体層、第2防草シート層、の順に配置されていることを特徴とする法面水抜き孔の土砂流出防止構造。
The sediment outflow prevention structure of the slope drainage hole according to claim 1 or 2.
The weed-proof sheet includes a first weed-proof sheet layer and a second weed-proof sheet layer.
The lattice body includes a first lattice body layer and a second lattice body layer.
The first lattice body layer, the first weed control sheet layer, the second lattice body layer, and the second weed control sheet layer are arranged in this order from the edge of the drain hole on the ground side toward the ground. A characteristic structure to prevent sediment outflow from the slope drainage hole.
請求項1から請求項3の何れか1項に記載の法面水抜き孔の土砂流出防止構造であって、
前記法面防護層は、複数のコンクリートブロックで構成され、
複数のコンクリートブロックの一部には、前記水抜き孔が設けられ、
水抜き孔が設けられたコンクリートブロックの接地面には、水抜き孔の開口を塞ぐように前記防草シートと前記格子体とが設けられていることを特徴とする法面水抜き孔の土砂流出防止構造。
The sediment outflow prevention structure of the slope drainage hole according to any one of claims 1 to 3.
The slope protection layer is composed of a plurality of concrete blocks.
The drain holes are provided in a part of the plurality of concrete blocks.
The ground surface of the concrete block provided with the drainage hole is provided with the weed-proof sheet and the lattice body so as to close the opening of the drainage hole. Outflow prevention structure.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5760918U (en) * 1980-09-29 1982-04-10
JPS5770832U (en) * 1980-10-20 1982-04-28
JPH02125051U (en) * 1989-03-20 1990-10-15
JPH11124869A (en) * 1997-10-23 1999-05-11 Hara Sogyo Kk Wall surface seeding and planting method
JP3148088U (en) * 2008-11-17 2009-01-29 京急建設株式会社 Grass cap for drain pipe
US20140261769A1 (en) * 2013-03-15 2014-09-18 Anthony Patti Architectural wall drain assembly

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5760918U (en) * 1980-09-29 1982-04-10
JPS5770832U (en) * 1980-10-20 1982-04-28
JPH02125051U (en) * 1989-03-20 1990-10-15
JPH11124869A (en) * 1997-10-23 1999-05-11 Hara Sogyo Kk Wall surface seeding and planting method
JP3148088U (en) * 2008-11-17 2009-01-29 京急建設株式会社 Grass cap for drain pipe
US20140261769A1 (en) * 2013-03-15 2014-09-18 Anthony Patti Architectural wall drain assembly

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