JP6975366B1 - Drainage pipe and its construction method - Google Patents

Drainage pipe and its construction method Download PDF

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JP6975366B1
JP6975366B1 JP2020195540A JP2020195540A JP6975366B1 JP 6975366 B1 JP6975366 B1 JP 6975366B1 JP 2020195540 A JP2020195540 A JP 2020195540A JP 2020195540 A JP2020195540 A JP 2020195540A JP 6975366 B1 JP6975366 B1 JP 6975366B1
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drainage pipe
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permeable body
sand
pipe
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里美 小泉
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株式会社 ライジングサン
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Abstract

【課題】土砂部に排水能力以上に溜まる水分を安定して持続的に斜面外に排出することが出来る排水パイプとその施工方法を提供する。【解決手段】法面（１４）などの傾斜面（１１）に打ち込み土砂部（１２）の水分を外部に排出する排水パイプ（１）において、先端部（７）が錐体状のカバーパイプ（２）の内側にポーラス状の透水体（３）を収納した排水パイプ（１）を土砂部（１２）に水平より少し上向きに打ち込み、打ち込み完了後、蓋部（４）のみを傾斜面（１１）から引き抜き、カバーパイプ（２）の受部（５）と透水体（３）を土砂部（１２）に残置することで、土砂内の水分を透水体（３）と受部（５）により、斜面外に排出する排水パイプとその施工方法を特徴とする。【選択図】図１PROBLEM TO BE SOLVED: To provide a drainage pipe capable of stably and continuously draining water accumulated in an earth and sand portion beyond the drainage capacity to the outside of a slope, and a construction method thereof. SOLUTION: In a drainage pipe (1) that is driven into an inclined surface (11) such as a slope (14) and drains water from an earth and sand portion (12) to the outside, a cover pipe (7) having a cone-shaped tip (7) is formed. A drainage pipe (1) containing a porous water permeable body (3) inside 2) is driven into the earth and sand portion (12) slightly upward from the horizontal, and after the driving is completed, only the lid portion (4) is inclined to the inclined surface (11). ), And the receiving part (5) and the water permeable body (3) of the cover pipe (2) are left in the earth and sand part (12), so that the water in the earth and sand is removed by the water permeable body (3) and the receiving part (5). It features a drainage pipe that drains out of the slope and its construction method. [Selection diagram] Fig. 1

Description

本発明は法面など傾斜面に打ち込み、土砂中の水分や上昇した地下水、浸透水等を外部に移動排出させる排水パイプ及びその施工方法に関するものである。 The present invention relates to a drainage pipe that is driven into an inclined surface such as a slope to move and discharge water in earth and sand, elevated groundwater, seepage water, etc. to the outside, and a construction method thereof.

近年大雨による山崩れ、河川の氾濫と水被害が跡を絶たない。土砂部の斜面は降水量が浸透能力の限界を超えてしまうと崩壊してしまう。このため、土砂部内の水分を排水して、土砂の含水比率を低減させ、斜面の崩落を防止する技術が提案されている。 In recent years, heavy rains have caused landslides, river floods and water damage. The slopes of the earth and sand will collapse when the amount of precipitation exceeds the limit of osmotic capacity. Therefore, a technique has been proposed in which the water content in the earth and sand portion is drained to reduce the water content ratio of the earth and sand and prevent the slope from collapsing.

特許文献１には、周壁に適宜間隔で水抜き孔を形成した管体を３本接続し、円錐状をした先端部から根本部まで、その外径を漸増させた排水パイプ及びその排水パイプの打ち込み方法が開示されている。 In Patent Document 1, three pipes having drainage holes formed at appropriate intervals on the peripheral wall are connected, and the outer diameter of the drainage pipe is gradually increased from the conical tip to the root, and the drainage pipe thereof. The driving method is disclosed.

特許文献２には、導水経路と透水経路を備えた棒状体において、この棒状体は粒状物を接着し、粒状物間の隙間が透水可能なように形成された通水体を、傾斜地の土壌中に埋設して土壌内の水分を排出することが開示されている。 According to Patent Document 2, in a rod-shaped body provided with a water-conducting path and a water-permeable path, the rod-shaped body adheres granules, and a water-passing body formed so that gaps between the granules can be permeated is formed in the soil of a slope. It is disclosed that it is buried in the soil to drain the water in the soil.

上述の通り、特許文献１及び２のいずれも管状あるいは棒状の排水パイプを土砂内に埋設し、該排水パイプの内部に土砂内の水分を取り込んで外部に排水する先行技術である。 As described above, both Patent Documents 1 and 2 are prior arts in which a tubular or rod-shaped drainage pipe is embedded in the earth and sand, and the water in the earth and sand is taken into the inside of the drainage pipe and drained to the outside.

特開２０１５−１６６５１９JP 2015-166519 実用新案登録第３１９０４２９号Utility model registration No. 3190429

しかしながら、特許文献１の排水パイプは、周壁に多数形成させた水抜き孔から、管体内に土砂内の水分を取り込み、外部に排水するものであるが、土砂内の水分と一緒に土砂も管体内に流入する。該排水パイプを土砂内に設置直後は、土砂内の水分をスムーズに外部に排水可能であるが、時間の経過とともに、管体内に流入する土砂が徐々に堆積して排水能力が低下し、最後には、管体内が土砂で閉塞し、排水が出来なくなるという課題がある。 However, the drainage pipe of Patent Document 1 takes in the water in the earth and sand into the pipe through a large number of drainage holes formed in the peripheral wall and drains the water to the outside. It flows into the body. Immediately after installing the drainage pipe in the earth and sand, the water in the earth and sand can be smoothly drained to the outside. Has a problem that the inside of the pipe is blocked by earth and sand and drainage cannot be performed.

一方、特許文献２の土砂内の水分を排水するための通水体は、小石等の粒状物を接着結合させて棒状体に形成しているだけのため、この通水体を土砂内に打ち込む際の衝撃や、固い地層を通過する際、通水体が破損したり、破断する恐れがある。また、通水体自体を直接土砂内に打ち込むため、通水体表面の凹凸部に土砂が入り込み、目詰まりを生じ、透水能力が低下するという課題がある。 On the other hand, the water-passing body for draining the water in the earth and sand of Patent Document 2 is simply formed into a rod-like body by adhesively bonding granules such as pebbles. There is a risk that the water passage will be damaged or broken when it is impacted or passed through a hard stratum. Further, since the water-passing body itself is directly driven into the earth and sand, there is a problem that the earth and sand enter into the uneven portion on the surface of the water-passing body, causing clogging and reducing the water permeability.

本発明者は、前述した従来技術の課題を解決するために、排水パイプ及びその施工方法の改良を行い、本発明を完成するに至った。すなわち、本発明の排水パイプは法面等の傾斜面に打ち込み、土砂部の水分を外部に排出する排水パイプにおいて、該排水パイプはカバーパイプと透水体で構成されており、該カバーパイプは一端を錐体状に成型するとともに、蓋部と受部で構成したことを特徴とする。 The present inventor has improved the drainage pipe and its construction method in order to solve the above-mentioned problems of the prior art, and has completed the present invention. That is, the drainage pipe of the present invention is a drainage pipe that is driven into an inclined surface such as a slope and discharges the water of the earth and sand portion to the outside. It is characterized in that it is formed into a cone shape and is composed of a lid portion and a receiving portion.

また、本発明の排水パイプにおいて、前記カバーパイプは円筒状をしており、蓋部は受部から脱着可能とし、該蓋部の後端に押圧部を固着し、該受部の先端部を円錐状に成型したことを特徴とする。 Further, in the drainage pipe of the present invention, the cover pipe has a cylindrical shape, the lid portion is removable from the receiving portion, the pressing portion is fixed to the rear end of the lid portion, and the tip portion of the receiving portion is attached. It is characterized by being molded into a conical shape.

また、本発明の排水パイプにおいて、前記カバーパイプは多角柱状をしており、蓋部は受部から脱着可能とし、該蓋部の後端に押圧部を固着し、該受部の先端部を多角錐状に成型したことを特徴とする。 Further, in the drainage pipe of the present invention, the cover pipe has a polygonal columnar shape, the lid portion is removable from the receiving portion, the pressing portion is fixed to the rear end of the lid portion, and the tip portion of the receiving portion is attached. It is characterized by being molded into a polygonal pyramid shape.

また、本発明の排水パイプにおいて、前記カバーパイプの蓋部の表面に剥離剤を塗布したことを特徴とする。 Further, the drainage pipe of the present invention is characterized in that a release agent is applied to the surface of the lid portion of the cover pipe.

また、本発明の排水パイプにおいて、前記カバーパイプの内部に収納する透水体はポーラス状の円柱状又は多角柱状に成型したことを特徴とする。 Further, in the drainage pipe of the present invention, the water permeable body housed inside the cover pipe is characterized by being molded into a porous columnar or polygonal columnar shape.

また、本発明の排水パイプにおいて、前記カバーパイプの内部に収納する透水体はポーラス状の中空円柱状又は中空多角柱状に成型したことを特徴とする。 Further, in the drainage pipe of the present invention, the water permeable body housed inside the cover pipe is characterized by being molded into a porous hollow columnar or hollow polygonal columnar shape.

また、本発明の排水パイプにおいて、前記透水体は自然石などの粒状物を骨材とし、数種類の繊維を混合したエポキシ系樹脂の主剤と硬化剤とで混錬することで、骨材と骨材の間に空隙部を形成して、ポーラス状に成型結合したことを特徴とする。 Further, in the drainage pipe of the present invention, the permeable body uses granules such as natural stone as an aggregate, and is kneaded with an epoxy resin main agent and a curing agent, which are a mixture of several types of fibers, to form an aggregate and bone. It is characterized in that voids are formed between the materials and molded and bonded in a porous shape.

また、本発明の排水パイプは、前記透水体の空隙部を通って土砂部の水分は中空部へと流れ込むとともに、カバーパイプの受部が樋部となり排水口から流出することを特徴とする。 Further, the drainage pipe of the present invention is characterized in that the water in the earth and sand portion flows into the hollow portion through the void portion of the water permeable body, and the receiving portion of the cover pipe becomes a gutter portion and flows out from the drainage port.

また、本発明の排水パイプの施工方法は、法面など傾斜面に打ち込み、土砂部の水分を外部に排出する排水パイプにおいて、先端部が錐体状のカバーパイプの内側に円柱形状又は多角柱形状をした、ポーラス状の透水体を収納した排水パイプを土砂部に打ち込み、打ち込み完了後、カバーパイプの表面に剥離剤を塗布した蓋部のみを傾斜面から引き抜き、カバーパイプの受部と透水体を土砂部に残置することを特徴とする。Further, the method of constructing the drainage pipe of the present invention is a drainage pipe in which the drainage pipe is driven into an inclined surface such as a slope and the moisture of the earth and sand portion is discharged to the outside. A drainage pipe containing a porous porous body with a shape is driven into the earth and sand part, and after the driving is completed, only the lid part coated with the release agent on the surface of the cover pipe is pulled out from the inclined surface, and the receiving part of the cover pipe and the water permeable part are pulled out. It is characterized by leaving the body in the earth and sand.

上記課題を解決するために上述のように、本発明の排水パイプとその施工方法は、土砂内の水分を常に斜面外に排出し、豪雨時の多量の雨水や上昇してきた地下水にも対応できるように優れた排水力を持つ透水体と、打ち込みの際、その透水体にダメージを与えないようにカバーパイプを用意し、透水体をその中に収納して土砂内に設置し、施工後カバーパイプの蓋部分だけを外部へ引き抜き、透水体を露出させ、その表面から多量の水分を捕え、排水経路へ送り出す長期持続性のある排水パイプとその施工方法を特徴とするものである。 In order to solve the above problems, as described above, the drainage pipe and its construction method of the present invention can always discharge the water in the earth and sand to the outside of the slope, and can cope with a large amount of rainwater during heavy rain and the rising groundwater. Prepare a water permeable body with excellent drainage power and a cover pipe so as not to damage the water permeable body at the time of driving, store the water permeable body in it and install it in the earth and sand, and cover it after construction. It features a long-lasting drainage pipe that pulls out only the lid of the pipe to the outside, exposes the permeable body, captures a large amount of water from the surface, and sends it out to the drainage route, and its construction method.

本発明の排水パイプは、蓋部と受部からなるカバーパイプと透水体で構成されており、該カバーパイプの先端部は錐体状に形成し、後端部には押圧部を固着している。該透水体を該カバーパイプに収納した状態で、該排水パイプを土砂内に打ち込むので、透水体は衝撃を受けることなく土砂内に設置できる。設置完了後、該蓋部を土砂外に引き抜くことで、該透水体表面の目詰まりを防ぎ、該透水体と該受部により、土砂内の多量の水分を外部に排水でき、該透水体内部及び該受部に土砂が堆積することが無いので、長期間安定した排水能力を発揮することができる排水パイプ及びその施工方法を提供することができる。 The drainage pipe of the present invention is composed of a cover pipe composed of a lid portion and a receiving portion and a water permeable body, the tip portion of the cover pipe is formed in a cone shape, and the pressing portion is fixed to the rear end portion. There is. Since the drainage pipe is driven into the earth and sand with the water permeable body housed in the cover pipe, the water permeable body can be installed in the earth and sand without being impacted. After the installation is completed, the lid is pulled out of the earth and sand to prevent clogging of the surface of the permeable body, and the permeable body and the receiving part can drain a large amount of water in the earth and sand to the outside, and the inside of the permeable body. Further, since no earth and sand are accumulated on the receiving portion, it is possible to provide a drainage pipe capable of exhibiting a stable drainage capacity for a long period of time and a construction method thereof.

本発明の排水パイプを土砂内に設置した概略断面図Schematic cross-sectional view of the drainage pipe of the present invention installed in earth and sand 図１のＸ部拡大図Enlarged view of part X in FIG. 本発明の排水パイプの正面図Front view of the drainage pipe of the present invention （ａ）中空多角柱状透水体を収納した図３のＡ−Ａ’線断面矢視図 （ｂ）中空円柱状透水体を収納した図３のＡ−Ａ’線断面矢視図(A) A-A'line cross-sectional view of FIG. 3 containing a hollow polygonal columnar permeable body (b) A-A'line cross-sectional view of FIG. 3 containing a hollow columnar permeable body. 本発明の排水パイプの蓋部を取り外した状態の正面図Front view of the drainage pipe of the present invention with the lid removed. （ａ）中空多角柱状透水体を用いた図５のＢ−Ｂ’線断面矢視図 （ｂ）中空円柱状透水体を用いた図５のＢ−Ｂ’線断面矢視図(A) BB'line cross-sectional view of FIG. 5 using a hollow polygonal columnar permeable body (b) BB'line cross-sectional view of FIG. 5 using a hollow columnar permeable body. 本発明の中空多角柱状透水体の正面斜視図Front perspective view of the hollow polygonal columnar permeable body of the present invention 図７のＣ−Ｃ’線断面矢視図FIG. 7 is a cross-sectional view taken along the line CC'. 本発明の排水パイプの受部と蓋部の接合部詳細図Detailed view of the joint portion between the receiving portion and the lid portion of the drainage pipe of the present invention

本発明に係る排水パイプ及びその施工方法について、図面に基づき詳述する。
図１は本発明の排水パイプを土砂内に設置した概略断面図であり、図２は図１のＸ部拡大図である。法面１４の土砂部１２内に該排水パイプ１を適宜間隔で必要数量を設置する。該排水パイプ１を錐体状をした先端部７から打ち込み、後端部が法面１４より少し突出するまで打ち込む。打ち込み方法は、図３に示す押圧部８を打撃する機械的な方法で打ち込んでもよく、あるいは、振動力による方法でも良い。また、油圧力等を用いた押圧力による圧入でも良いものである。該排水パイプ１を土砂部１２に打ち込む際は、先端部７を水平より角度α上向きに打ち込む。角度αは１〜１０°が好適であり、角度αは土砂部１２の土質等から適宜設定するものである。The drainage pipe and the construction method thereof according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic cross-sectional view in which the drainage pipe of the present invention is installed in earth and sand, and FIG. 2 is an enlarged view of part X of FIG. A required number of drainage pipes 1 are installed in the earth and sand portion 12 of the slope 14 at appropriate intervals. The drainage pipe 1 is driven from the cone-shaped tip portion 7 until the rear end portion slightly protrudes from the slope 14. The driving method may be a mechanical method of striking the pressing portion 8 shown in FIG. 3, or a method of using a vibrating force. Further, press-fitting by pressing force using oil pressure or the like may be used. When driving the drainage pipe 1 into the earth and sand portion 12, the tip portion 7 is driven upward at an angle α from the horizontal. The angle α is preferably 1 to 10 °, and the angle α is appropriately set from the soil quality of the earth and sand portion 12.

図３は排水パイプ１の図面であり、符号２は円筒状又は多角柱状をしているカバーパイプ、符号４は蓋部、符号５は受部、符号７は先端部であり該受部５の一端に固着している。該先端部７は該カバーパイプ２が円筒状の場合は円錐状、多角柱状の場合は多角錐状をしている。符号８は該蓋部４の後端に固着されている押圧部である。該カバーパイプ２は鉄等の金属製で製作しており、外径は３〜３０ｃｍ程度、全長は１〜１０ｍ程度とし、外径及び全長は法面１４の形状や土砂部の土質や厚み等から適宜設定する。該カバーパイプ２は該蓋部４と該受部５で構成されており、該蓋部４は該受部５から分離できる構造をしている。 FIG. 3 is a drawing of the drainage pipe 1. Reference numeral 2 is a cylindrical or polygonal columnar cover pipe, reference numeral 4 is a lid portion, reference numeral 5 is a receiving portion, and reference numeral 7 is a tip portion of the receiving portion 5. It is stuck to one end. The tip portion 7 has a conical shape when the cover pipe 2 is cylindrical, and a polygonal pyramid shape when the cover pipe 2 has a polygonal columnar shape. Reference numeral 8 is a pressing portion fixed to the rear end of the lid portion 4. The cover pipe 2 is made of metal such as iron, has an outer diameter of about 3 to 30 cm, a total length of about 1 to 10 m, and the outer diameter and the total length are the shape of the slope 14, the soil quality and thickness of the earth and sand, etc. Set as appropriate from. The cover pipe 2 is composed of the lid portion 4 and the receiving portion 5, and the lid portion 4 has a structure that can be separated from the receiving portion 5.

図４は図３のＡ−Ａ’線で切断した断面矢視図であり、該蓋部４と該受部５で構成されたカバーパイプ２の内部に透水体３を収納している。図４（ａ）は、中空の六角柱状透水体３を収納しており、図４（ｂ）は、中空の円柱状透水体３を収納している。符号６は該透水体３の中央部に設けている中空部であり、該透水体３から流入した水を集水し、外部に排出するものである。図４の該カバーパイプ２は円筒形状をしているが、多角柱形状でも良いものである。又、該透水体３は、中実の多角柱状あるいは中実の円柱状でも良く、機能面や性能面で特に問題なく使用可能である。中空のものは製造的に手間がかかるが、水を多量に捕えることが出来、中空部分の材料費が省ける。 FIG. 4 is a cross-sectional view taken along the line AA'of FIG. 3, in which the water permeable body 3 is housed inside the cover pipe 2 composed of the lid portion 4 and the receiving portion 5. FIG. 4A contains a hollow hexagonal columnar permeable body 3, and FIG. 4B contains a hollow cylindrical permeable body 3. Reference numeral 6 is a hollow portion provided in the central portion of the permeable body 3, which collects water flowing from the permeable body 3 and discharges the water to the outside. Although the cover pipe 2 in FIG. 4 has a cylindrical shape, it may have a polygonal prism shape. Further, the water permeable body 3 may be a solid polygonal column or a solid columnar, and can be used without any particular problem in terms of function and performance. Hollow ones are laborious to manufacture, but they can capture a large amount of water and the material cost of the hollow part can be saved.

図５は排水パイプ１の蓋部４を取り外した状態の図面であり、この状態で土砂部１２内に設置される。図６は図５のＢ−Ｂ’線で切断した断面矢視図であり、図６（ａ）は、該受部５内に中空六角柱形状の透水体３を設置しており、符号１０は該受部５と該透水体３で生じた樋部である。該透水体３や該中空部６から浸出した水分を集水して、外部に排水するものである。該透水体３は本図では六角柱をしているが、三角柱以上の多角柱であれば該透水体３としての機能を備えるものである。図６（ｂ）は、該受部５内に中空円柱形状の透水体３を設置しており、符号５−３は該透水体３を支持するためのリブであり、該リブ５−３により、該受部５と該透水体３との間に樋部１０を確保するようにしている。尚、該透水体３は、中実の六角柱形状あるいは、中実の円柱形状のものを使用しても良いことは勿論である。 FIG. 5 is a drawing in a state where the lid portion 4 of the drainage pipe 1 is removed, and is installed in the earth and sand portion 12 in this state. FIG. 6 is a cross-sectional arrow view taken along the line BB'of FIG. 5, and FIG. 6A shows a hollow hexagonal column-shaped water permeable body 3 installed in the receiving portion 5, with reference numeral 10. Is a gutter portion formed by the receiving portion 5 and the water permeable body 3. Moisture leached from the water permeable body 3 and the hollow portion 6 is collected and drained to the outside. The water permeable body 3 has a hexagonal prism in this figure, but if it is a polygonal prism having a triangular prism or more, it has a function as the water permeable body 3. In FIG. 6B, a hollow cylindrical water permeable body 3 is installed in the receiving portion 5, and reference numeral 5-3 is a rib for supporting the water permeable body 3, and the rib 5-3 is used. , The gutter portion 10 is secured between the receiving portion 5 and the water permeable body 3. Needless to say, the water permeable body 3 may have a solid hexagonal column shape or a solid cylindrical shape.

図７は六角柱形状をした、該透水体３の斜視図である。該透水体３は本発明の排水パイプにおいて、最も重要な部材である。土砂内の水分を捉え、すばやく排水路や中空部へと送水する役目を担う。該透水体３は複数の骨材をポーラス状に接着してその隙間から水分が通り抜ける構造をしている。骨材は自然石や人工石の粒状物などを使用し、エポキシ系樹脂の主剤と硬化剤を一緒に混錬する。主剤には予め高捲縮糸とアラミド系糸又パルプ系繊維を加えて混合しておく。それぞれの糸は互いに逆方向に撚糸するため、強く絡み合うことなく主剤・樹脂剤の中で糸独自の特性を発揮し、骨材と骨材の間に隙間を作り、硬化剤によって固められる。該透水体３の骨材は自然石が好ましいが、人工石・ガラスビーズ・スラグ・貝殻・プラスチックチップ等の破砕物でも良い。又、接着剤においてはウレタン系・アクリル系等、粒状物の接着剤ならエポキシ系樹脂には限らない。 FIG. 7 is a perspective view of the water permeable body 3 having a hexagonal column shape. The water permeable body 3 is the most important member in the drainage pipe of the present invention. It is responsible for capturing the moisture in the earth and sand and quickly sending it to the drainage channel or hollow part. The water permeable body 3 has a structure in which a plurality of aggregates are bonded in a porous shape and water can pass through the gaps thereof. As the aggregate, natural stone or artificial stone granules are used, and the main agent of epoxy resin and the curing agent are kneaded together. Highly crimped yarn and aramid-based yarn or pulp-based fiber are added to the main agent in advance and mixed. Since each yarn is twisted in opposite directions, it exhibits the unique characteristics of the yarn in the main agent / resin agent without being strongly entangled, creates a gap between the aggregates, and is hardened by the hardening agent. The aggregate of the water permeable body 3 is preferably natural stone, but crushed material such as artificial stone, glass beads, slag, shells, and plastic chips may also be used. Further, the adhesive is not limited to the epoxy resin as long as it is a granular adhesive such as urethane-based or acrylic-based.

図８は図７のＣ−Ｃ’線で切断した断面矢視図であり、該透水体３の中芯部は空洞になった中空部６で、該透水体３の周部から入ってきた水分は空隙部３−１を通り抜けて、該中空部６に集まる。該透水体３や該中空部６から溢れた水分は該受部５が樋部１０になって、前記樋部１０に沿って前記排水口１３へと流れ出る。該中空部６の開口比率は該透水体３の断面積の略１０〜３０％とし、前記土砂部１２の土質等により、適宜開口比率を設定する。図８は、中空六角柱形状をした該透水体３であるが、中空円柱形状の該透水体３（図示せず）においても、該中空部６の開口比率は同様である。又、該透水体３を中実の多角柱形状あるいは、中実の円柱形状（図示せず）のものを使用する場合、該空隙部３−１の断面積は、該透水体３の断面積の略３〜１０％とするものである。 FIG. 8 is a cross-sectional arrow view taken along the line CC'of FIG. 7, in which the core portion of the permeable body 3 is a hollow hollow portion 6 that has entered from the peripheral portion of the permeable body 3. Moisture passes through the void portion 3-1 and collects in the hollow portion 6. Moisture overflowing from the water permeable body 3 and the hollow portion 6 becomes a gutter portion 10 in the receiving portion 5, and flows out to the drain port 13 along the gutter portion 10. The opening ratio of the hollow portion 6 is approximately 10 to 30% of the cross-sectional area of the water permeable body 3, and the opening ratio is appropriately set depending on the soil quality of the earth and sand portion 12. FIG. 8 shows the water permeable body 3 having a hollow hexagonal column shape, but the opening ratio of the hollow portion 6 is the same also in the water permeable body 3 having a hollow columnar shape (not shown). When the water permeable body 3 has a solid polygonal prism shape or a solid cylindrical shape (not shown), the cross-sectional area of the gap portion 3-1 is the cross-sectional area of the water permeable body 3. It is about 3 to 10% of.

図９は該カバーパイプ２の該蓋部４と該受部５の接合部を表す断面詳細図である。該蓋部４と該受部５の接合は、該蓋部４に該受部５の凹部５−１を係合して固定するものである。該蓋部４の内外面には、剥離剤を塗布して剥離面９を形成している。該排水パイプ１を土砂部１２内に設置完了後、該蓋部４だけをスライドさせながら引き抜くことができる。引き抜いた該蓋部４は他の受部５の蓋部４として再利用可能なため、施工費用が安価となる。尚、符号５−２は土砂流入防止板であり、該受部５と該透水体３との間に生じる隙間を塞ぎ、該受部５内に土砂が流入するのを防止するものである。 FIG. 9 is a detailed cross-sectional view showing a joint portion between the lid portion 4 and the receiving portion 5 of the cover pipe 2. The joint between the lid portion 4 and the receiving portion 5 engages and fixes the recess 5-1 of the receiving portion 5 with the lid portion 4. A release agent is applied to the inner and outer surfaces of the lid portion 4 to form the release surface 9. After the installation of the drainage pipe 1 is completed in the earth and sand portion 12, only the lid portion 4 can be pulled out while sliding. Since the pulled out lid portion 4 can be reused as the lid portion 4 of the other receiving portion 5, the construction cost is low. Reference numeral 5-2 is a sediment inflow prevention plate, which closes the gap formed between the receiving portion 5 and the permeable body 3 to prevent the sediment from flowing into the receiving portion 5.

近年、温暖化の影響により各地で豪雨が多発しており、山崩れや斜面の崩落が頻繁に発生している。これらの山崩れや斜面の崩落の原因は、土砂内に浸み込んだ雨水量が大量のため、外部への排水能力が限界を超えるために発生するものである。本発明の排水パイプは、排水能力が高く、長期間安定した排水性能を維持できるので、本排水パイプを斜面内に設置することで、山崩れや斜面の崩落の防止を図れるもので、法面工事等に利用できるものである。 In recent years, heavy rains have occurred frequently in various places due to the effects of global warming, and landslides and slopes have frequently occurred. The cause of these landslides and slope collapses is that the amount of rainwater that has penetrated into the earth and sand is large, and the drainage capacity to the outside exceeds the limit. The drainage pipe of the present invention has a high drainage capacity and can maintain stable drainage performance for a long period of time. Therefore, by installing this drainage pipe on a slope, it is possible to prevent landslides and slope collapse. It can be used for such purposes.

１ 排水パイプ
２ カバーパイプ
３ 透水体
３−１ 空隙部
４ 蓋部
５ 受部
５−１ 凹部
５−２ 土砂流入防止板
５−３ リブ
６ 中空部
７ 先端部
８ 押圧部
９ 剥離面
１０ 樋部
１１ 傾斜面
１２ 土砂部
１３ 排水口
１４ 法面1 Drainage pipe 2 Cover pipe 3 Water permeable body 3-1 Void part 4 Lid part 5 Receiving part 5-1 Recession 5-2 Sediment inflow prevention plate 5-3 Rib 6 Hollow part 7 Tip part 8 Pressing part 9 Peeling surface 10 Gutter part 11 Inclined surface 12 Sediment part 13 Drainage port 14 Slope

Claims (9)

法面（１４）等の傾斜面に打ち込み、土砂部（１２）の水分を外部に排出する排水パイプ（１）において、該排水パイプ（１）はカバーパイプ（２）と透水体（３）で構成されており、該カバーパイプ（２）は一端を錐体状に成型するとともに、蓋部（４）と受部（５）で構成したことを特徴とする排水パイプ。 In a drainage pipe (1) that is driven into an inclined surface such as a slope (14) and drains water from the earth and sand portion (12) to the outside, the drainage pipe (1) is a cover pipe (2) and a water permeable body (3). The cover pipe (2) is a drainage pipe having one end molded into a pyramid shape and composed of a lid portion (4) and a receiving portion (5). 前記カバーパイプ（２）は円筒状をしており、蓋部（４）は受部（５）から脱着可能とし、該蓋部（４）の後端に押圧部（８）を固着し、該受部（５）の先端部（７）を円錐状に成型したことを特徴とする請求項１に記載の排水パイプ。 The cover pipe (2) has a cylindrical shape, the lid portion (4) is removable from the receiving portion (5), and the pressing portion (8) is fixed to the rear end of the lid portion (4). The drainage pipe according to claim 1, wherein the tip portion (7) of the receiving portion (5) is molded into a conical shape. 前記カバーパイプ（２）は多角柱状をしており、蓋部（４）は受部（５）から脱着可能とし、該蓋部（４）の後端に押圧部（８）を固着し、該受部（５）の先端部（７）を多角錐状に成型したことを特徴とする請求項１に記載の排水パイプ。 The cover pipe (2) has a polygonal columnar shape, the lid portion (4) is detachable from the receiving portion (5), and the pressing portion (8) is fixed to the rear end of the lid portion (4). The drainage pipe according to claim 1, wherein the tip portion (7) of the receiving portion (5) is molded into a polygonal pyramid shape. 前記カバーパイプ（２）の蓋部（４）の表面に剥離剤を塗布したことを特徴とする請求項１〜３のいずれか１項に記載の排水パイプ。 The drainage pipe according to any one of claims 1 to 3, wherein a release agent is applied to the surface of the lid portion (4) of the cover pipe (2). 前記カバーパイプ（２）の内部に収納する透水体（３）は、ポーラス状の円柱状又は多角柱状に成型したことを特徴とする請求項１に記載の排水パイプ。 The drainage pipe according to claim 1, wherein the water permeable body (3) housed inside the cover pipe (2) is molded into a porous columnar or polygonal columnar shape. 前記カバーパイプ（２）の内部に収納する透水体（３）は、ポーラス状の中空円柱状又は中空多角柱状に成型したことを特徴とする請求項１に記載の排水パイプ。 The drainage pipe according to claim 1, wherein the water permeable body (3) housed inside the cover pipe (2) is molded into a porous hollow columnar or hollow polygonal columnar shape. 前記透水体（３）は自然石などの粒状物を骨材とし、数種類の繊維を混合したエポキシ系樹脂の主剤と硬化剤とで混錬することで、骨材と骨材の間に空隙部（３−１）を形成して、ポーラス状に成型結合したことを特徴とする請求項１又は５〜６のいずれか１項に記載の排水パイプ。 The water permeable body (3) uses granules such as natural stone as an aggregate, and is kneaded with an epoxy resin main agent and a curing agent, which are a mixture of several types of fibers, to create a gap between the aggregates. The drainage pipe according to any one of claims 1 or 5 to 6, wherein (3-1) is formed and molded and bonded in a porous shape. 前記、透水体（３）の空隙部（３−１）を通って土砂部（１２）の水分は中空部（６）へと流れ込むとともに、カバーパイプ（２）の受部（５）が樋部（１０）となり排水口（１３）から流出することを特徴とする請求項１又は５〜７のいずれか１項に記載の排水パイプ。 Moisture in the earth and sand portion (12) flows into the hollow portion (6) through the void portion (3-1) of the water permeable body (3), and the receiving portion (5) of the cover pipe (2) is a gutter portion. The drainage pipe according to any one of claims 1 or 5 to 7, wherein the drainage pipe becomes (10) and flows out from the drainage port (13). 法面（１４）など傾斜面（１１）に打ち込み、土砂部（１２）の水分を外部に排出する排水パイプ（１）において、先端部（７）が錐体状のカバーパイプ（２）の内側に円柱形状又は多角柱形状をした、ポーラス状の透水体（３）を収納した排水パイプ（１）を土砂部（１２）に打ち込み、打ち込み完了後、カバーパイプ（２）の表面に剥離剤を塗布した蓋部（４）のみを傾斜面（１１）から引き抜き、カバーパイプ（２）の受部（５）と透水体（３）を土砂部（１２）に残置することを特徴とする排水パイプの施工方法。 In the drainage pipe (1) that is driven into an inclined surface (11) such as a slope (14) and drains the moisture of the earth and sand portion (12) to the outside, the tip portion (7) is inside the pyramidal cover pipe (2). A drainage pipe (1) containing a porous water permeable body (3) having a columnar or polygonal column shape is driven into the earth and sand portion (12), and after the driving is completed, a release agent is applied to the surface of the cover pipe (2). A drainage pipe characterized in that only the coated lid portion (4) is pulled out from the inclined surface (11), and the receiving portion (5) and the water permeable body (3) of the cover pipe (2) are left in the earth and sand portion (12). Construction method.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5655636A (en) * 1979-10-15 1981-05-16 Taiyo Kogyo Kk Fitting method and fitting tool for water-drawing pipe
JPS58178725A (en) * 1982-04-12 1983-10-19 Pioneer Sangyo Kk Water draining pipe
JPH08277519A (en) * 1995-04-07 1996-10-22 Chisso Corp Drainage material and application thereof
JP2015166519A (en) * 2014-03-03 2015-09-24 日鐵住金建材株式会社 Drain pipe and driving method therefor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5655636A (en) * 1979-10-15 1981-05-16 Taiyo Kogyo Kk Fitting method and fitting tool for water-drawing pipe
JPS58178725A (en) * 1982-04-12 1983-10-19 Pioneer Sangyo Kk Water draining pipe
JPH08277519A (en) * 1995-04-07 1996-10-22 Chisso Corp Drainage material and application thereof
JP2015166519A (en) * 2014-03-03 2015-09-24 日鐵住金建材株式会社 Drain pipe and driving method therefor

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