JPS63130812A - Draining material for civil construction work - Google Patents

Abstract

PURPOSE:To obtain a draining material which is excellent in water permeability and water draining performance and can also be easily set by providing flexible tubes in a mat made of corrosion-resistant fibers. CONSTITUTION:In a mat 1 which is formed by connecting corrosion-resistant fibers entangled in a roughly porous state into a bridged form by a corrosion- resistant adhesive, flexible tubes 2 made of a rigid synthetic resin, having uneven surface with projections 2a and recessions 2b and many small holes 2c, are provided. A general-purpose light-weight draining material which is good in water permeability, draining property, and workability can thus be obtained.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to back drainage works of retaining walls, culvert boxes, tunnels, etc., culvert drainage works of developed areas such as golf courses and housing lots, and drainage of subgrades and slopes. This relates to permeable drainage materials used in civil engineering and construction works.

[Prior art and its problems]

Conventionally, various materials have been used as this type of permeable drainage material, but they lack versatility, and non-woven fabric sheets and mats used for back drainage and slope drainage, or sheets in addition to mats, have been used. Those that are attached have the problem of being vulnerable to external pressure such as earth pressure, easily clogging, and deteriorating collection and drainage over time.

In addition, the perforated humid pipes used for underdrain drainage not only require burying stones, etc. around them to prevent clogging, but also conventional underdrain drainage materials are heavy and require a lot of work. However, there is a problem that construction costs are high.

The purpose of the present invention is to provide a permeable drainage system for civil engineering and construction work that has versatility, is strong against external pressure such as landslides, is light and easy to handle, and can be easily constructed even if the mounting surface is uneven. We provide materials.

[Means for solving problems]

The present invention consists of a mat-like main body in which corrosion-resistant fibers are intertwined with rough voids, and corrugated irregularities are continuous on the outer periphery of a hard synthetic resin tube. It is made up of one or more flexible tubes that are formed using a flexible tube and have a large number of small holes drilled therein.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

A is a permeable drainage material consisting of a mat-like main body l and a flexible tube 2. The main body 1 is made by intertwining corrosion-resistant fibers such as coconut fibers and synthetic resin fibers with rough gaps, and connecting each fiber in a bridge shape with a corrosion-resistant adhesive such as synthetic resin to obtain the desired thickness. It is made into a matte shape. The flexible tube 2 is made of @-quality synthetic resin and has corrugated concave and convex portions 2a and 2 on the outer periphery.
A flexible tube is formed by continuously forming a tube with small holes 2C formed at equal intervals or randomly in the main four parts of the tube. Then, the flexible tube 2 is placed inside the main body 1, and the diameter of the flexible tube 2 (for example, 30~
50) at intervals (30 to 5 hours) to form a permeable drainage material A of a desired size.

That is, the above-mentioned permeable drainage material is made by placing a plurality of long flexible tubes continuously at predetermined intervals on corrosion-resistant fibers laminated to a constant thickness in a curled shape, a straight shape, or a mixture thereof. death,
The above-mentioned corrosion-resistant fibers are laminated to a predetermined thickness from above the flexible tube, and a corrosion-resistant adhesive is sprinkled from above, dried, and compressed to the extent that the fuzz on the surface is suppressed before use. It is manufactured by cutting to the required size according to the intended use.

Next, an example of use of the permeable drainage material according to the present invention will be explained based on FIG. 3.

Figure 3 (&) is an explanatory diagram used for culvert drainage, in which cut permeable drainage materials A, A, etc. of the required width and length are placed in series in 7RD dug to the required depth. At the same time, the flexible pipes 2 and 2 to the permeable drainage material A were connected using connectors (1 not shown), and backfilling was performed to complete the culvert drainage work.

Fig. 3(b) is an explanatory drawing used for drainage on the back side of the tunnel.
50m/m, length 5-10m) with a fixture, connect the flexible pipes 2, 2 of each permeable drainage material A, A through the connector in the same way as above, and After connecting the flexible pipe of permeable drainage material A to the center drain or side gutter, cover it with a water-stop sheet and cast lining concrete to complete the drainage work on the back side of the tunnel.

In this case, since the permeable drainage material has flexibility, it can easily avoid following the unevenness of the inner wall of the tunnel.

Figure 3 (C) is an explanatory drawing used for drainage on the back side of a concrete retaining wall, and the entire back side of the retaining wall W is covered with permeable drainage materials A, A...
- are installed vertically, and the flexible tubes are connected together via a connector (not shown) in the same way as described above, and the upper opening of the flexible tube 2 of the uppermost permeable drainage material is plugged with a cover. and fix it to the wall to complete the back drainage work.

Therefore, water inside the soil, walls, structures, etc. permeates through the main body 1 of the buried permeable and drainage material A, flows into the flexible pipe 2 through the small hole 2c, and is drained. - [Effects of the Invention] According to the present invention, since the flexible tube made of hard synthetic resin is integrally provided within the mat-like main body, water permeability and drainage performance are good.
In addition, it is strong against external pressure such as Tonosho, and can be used for a long time. Furthermore, it is flexible, so it can be easily installed along even if the mounting surface has unevenness, providing versatility. Not only that, it is lightweight, so it is easy to construct, does not require mechanical power, and has the advantage of significantly reducing construction costs.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the permeable drainage material according to the present invention, Figure 2 is a sectional view of a flexible tube, and Figures 3 (a), (b), and (c) are uses of the permeable drainage material according to the present invention. Examples are shown: (a) is an explanatory diagram used for the Sho culvert drainage, (b) is an explanatory diagram used for the tunnel back drainage, and (C) is an explanatory diagram used for the back drainage of the concrete 1 wall. be. A is permeable drainage material, 1 is the main body, 2 is the flexible pipe, 2 JL is the concave part, 2b is the convex part, 2c is the small hole patent applicant Kyoei Joki Kokotai Co., Ltd. Agent Kiyoshi Hayashi
“Akira same as Okumura
Text by Yu 'v, Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] Corrosion-resistant fibers are intertwined with rough voids in the mat-like main body with a corrosion-resistant adhesive, and corrugated uneven parts are continuously formed on the outer periphery of a hard synthetic resin tube, and A permeable and drainage material for civil engineering and construction work, characterized by having one or more flexible pipes drilled with a large number of small holes.