JPH0229804B2 - DOBOKUYOTAJUKAN - Google Patents

Description

【発明の詳細な説明】 「産業上の利用分野」 本発明は地すべり防止、地盤改良等の排水に用
いる土木用多重管に関するものである。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to multiple pipes for civil engineering used for drainage for landslide prevention, ground improvement, etc.

「従来の技術」 従来地すべり地や地盤改良地等に埋設する排水
用有孔ヒユーム管等が使用されている。しかし埋
設配管路の一部に透水層があると管内の水は外部
に流出し、その透水層に水が流入してその部分に
地すべり等の災害を起すし、含水層（地すべり地
帯）の上方に湧水があると地すべり対策が困難と
なつた。``Conventional technology'' Conventionally, perforated drainage pipes have been used that are buried in landslide areas, ground improvement areas, etc. However, if there is a permeable layer in a part of a buried pipe, the water inside the pipe will flow out to the outside, and water will flow into the permeable layer, causing disasters such as landslides in that part. The presence of spring water in the area made landslide countermeasures difficult.

「発明が解決しようとする問題点」 本発明は埋設配管路中の含水層から透水層を経
て上記配管路外に排水しかつ上流湧水を安全に誘
導することのできる多重管を得ることを目的とす
るものである。"Problems to be Solved by the Invention" The present invention aims to provide a multilayer pipe that can drain water from a water-containing layer in a buried pipe through a permeable layer to the outside of the pipe and safely guide upstream spring water. This is the purpose.

「問題点を解決するための手段」 本発明は透水性外管内に間隙を介して不透水性
内管を設けてなり、かつ上記間隙と不透水性管と
の連通部を有し、同連通部に上記外管と不透水性
管との集水継手を設けてなる土木用多重管によつ
て構成される。"Means for Solving the Problems" The present invention comprises a water-impermeable inner pipe provided within a water-permeable outer pipe through a gap, and a communication portion between the gap and the water-impermeable pipe. It is composed of multiple pipes for civil engineering, each of which has a water collection joint between the outer pipe and the impermeable pipe.

「作用」 従つて地すべり地等の含水層から透水性外管１
を経て間隙ｔ内に水が進入し同間隙ｔ内を水が流
通すると共に内管２内には上流側の湧水等の集水
が流通する。そして上記埋設配管の管路において
透水層があると含水層から透水層に入る境界部に
おいて、集水継手５から上記含水層における間隙
ｔの流通水及び内管２内流通水は不透水性管３内
に入り同管３内を流通して管路外に排出されるた
め管内流通水は２重管外の透水層内に流出するこ
とはない。``Effect'' Therefore, the water-permeable outer pipe 1
Water enters the gap t through the gap t and flows through the gap t, and collected water such as spring water on the upstream side flows into the inner pipe 2. If there is a permeable layer in the underground pipe, at the boundary between the water-containing layer and the water-permeable layer, the water flowing from the water collection joint 5 in the gap t in the water-containing layer and the water flowing in the inner pipe 2 are transferred to the impermeable pipe. 3, flows through the pipe 3, and is discharged outside the pipe, so the water flowing inside the pipe does not flow into the water permeable layer outside the double pipe.

「実施例」 無数の小透孔６を穿設した外管１の内部に水の
流通間隙ｔを介して不透水性内管２を挿入して２
重管を形成する。内管２の一部には上記間隙ｔに
通じる開口部を有し連通部４を形成する。この連
通部には第４図に示すような漏斗の下端を嵌合
し、上端を外管１の接続部に嵌合し外管１と不透
水管３とを接続して集水継手５を形成する。尚図
中７で示すものは内外管１，２の上流側湧水呑口
である。``Example'' A water-impermeable inner tube 2 is inserted into an outer tube 1 having numerous small through holes 6 through a water flow gap t.
Forms a heavy pipe. A portion of the inner tube 2 has an opening that communicates with the gap t, forming a communication portion 4. The lower end of a funnel as shown in FIG. 4 is fitted into this communication part, and the upper end is fitted into the connecting part of the outer pipe 1 to connect the outer pipe 1 and the impermeable pipe 3 to form the water collection joint 5. Form. In addition, what is shown by 7 in the figure is the spring water inlet on the upstream side of the inner and outer pipes 1 and 2.

「効果」 本発明は上述のように構成したので、埋設配管
路における含水層内の水を上記間隙ｔから流出し
かつ上流側湧水を内管２内を流出させて地すべり
防止又は地盤改良を行い得るばかりでなく上記配
管路内の透水層において上記間隙ｔ内の水を流出
させることなく配管路外に排水し得て透水層を安
全に保持し得る効果がある。"Effects" Since the present invention is configured as described above, the water in the water-containing layer in the buried pipeline flows out from the gap t, and the upstream spring water flows out into the inner pipe 2, thereby preventing landslides or improving the ground. Not only this, but also the water in the gap t in the water-permeable layer in the piping can be drained out of the piping without flowing out, and the water-permeable layer can be safely maintained.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の土木用多重管を示す縦断面
図、第２図は第１図の一部側面図、第３図は第２
図の縦断面図、第４図は集水継手の斜視図、第５
図は湧水呑口継手施工縦断面図、第６図は同継手
の斜視図である。 １…透水性外管、ｔ…間隙、２…不透水性内
管、３…不透水性管、４…連通部、５…集水継
手。 FIG. 1 is a vertical cross-sectional view showing a multiplex pipe for civil engineering according to the present invention, FIG. 2 is a partial side view of FIG. 1, and FIG.
Fig. 4 is a perspective view of the water collection joint;
The figure is a vertical sectional view of the construction of the spring water spout joint, and FIG. 6 is a perspective view of the joint. 1...Water permeable outer pipe, t...Gap, 2...Water impermeable inner pipe, 3...Water impermeable pipe, 4...Communication part, 5...Water collection joint.

Claims (1)

【特許請求の範囲】[Claims] １ 透水性外管内に間隙を介して不透水性内管を
設けてなり、かつ上記間隙と不透水性管との連通
部を有し、同連通部に上記外管と不透水性管との
集水継手を設けてなる土木用多重管。1 A water-impermeable inner pipe is provided within a water-permeable outer pipe through a gap, and has a communication part between the gap and the water-impermeable pipe, and a part between the outer pipe and the water-impermeable pipe in the communication part. Multiple pipes for civil engineering equipped with water collection joints.