JPS61121227U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is an overall view of the underdrain collection/drainage pipe 1, Fig. 2 is a diagram showing a state in which a large number of underdrain drainage pipes 1 according to the present invention are piled up and bundled at random, and Fig. 3 is a diagram showing the underdrain drainage pipe 1 according to the present invention. FIG. 4 is a sectional view of another embodiment of the culvert drainage pipe 1 in a tied state, and FIG. 5 shows the culvert drainage pipe 1 in accordance with the present invention. FIG. 3 is a cross-sectional view of an embodiment of the plate in a bundled state. 1... Underdrain collection and drainage pipe, 2, 2a... Space room, 3, 3
a...Opening, 4, 4a, 4b, 4c, 5, 5a,
5b, 5c... plate-like protrusions.

Claims (1)

[Scope of utility model registration request] The underdrain collection and drainage pipe 1 is buried in the soil, and collects spring water in the soil or seepage water from the ground through openings 3 and 3a in a continuous, unbroken line, and creates two adjacent spatial chambers 2. , 2a are used as waterways to drain water, and the space chambers 2 and 2a have a good water receiving area outside, and even when a large number of collection and drainage pipes 1 are bundled, there is no space between them. It has continuous plate-like protrusions 4, 4a, 4b, and 4c so as to ensure the 2, 2a, and the soil grains and sand in the soil easily enter through the water collection ports 3, 3a and accumulate in the inner space of the waterways 2, 2a, which prevents them from functioning as waterways. This underdrain collection and drainage pipe is characterized in that four continuous plate-like protrusions 5, 5a, 5b, and 5c are provided in the very vicinity of the openings 3 and 3a in order to prevent damage from occurring.