JPH0449246Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Industrial application field) There are two types of culverts: one is a sealed tunnel used for a special purpose, and the other is one that accepts the intrusion of surrounding groundwater and quickly drains the groundwater. Such culverts relate to the latter.

(Conventional technology) In civil engineering works such as forest road construction and grounds such as athletic stadiums, underground water leakage during construction, etc.
Since it is necessary to quickly remove rainwater from the ground, underground drains have been installed to serve as drainage channels. Conventional culvert structures include digging a trench, filling the site with aggregate such as gravel and crushed stone, and then covering the top of the trench with soil, or placing an earthen pipe made of permeable material into the soil. This can be done by burying the vines or, most simply, by tying the vines together and burying them in the ground.

(Problems to be solved by the invention) The construction cost of the conventional method of using internal aggregate for culverts is high, and transportation of the aggregate itself is complicated at construction sites in the mountains, such as when constructing forest roads. Become. In addition, the method of using permeable earthen pipes has a problem with the strength of the permeable earthen pipe itself, and there is a risk of breakage when construction machinery passes over the culvert. Furthermore, methods using vines are cheap and easy to handle, but they rot in a short period of time. Therefore, using bundled bamboo poles instead of vines solves the corrosion problem, but the cross-section of the channel is narrower than the converging cross-section, so it is difficult to say that it is an effective underdrain.

(Means for Solving the Problems) In view of the above-mentioned problems of the present invention, a new means for forming culverts has been proposed. That is, in the culvert according to the present invention, the thin rod 1 and the vertically divided rod 2 of the thick rod are cut to appropriate lengths, and bundled with metal wire 3, resin wire, etc. to a predetermined thickness to form a bundle A. The above-mentioned focusing body A is placed in series in a bored groove B, and the groove B is then backfilled.

Therefore, the gap a formed between the narrow rod 1 and the vertically divided rod 2 of the buried bundle A becomes a flow channel, and since the bundle A itself is not formed in a sealed state, it is not possible to bury the bundle A. The groundwater contained around the bundle A easily enters the gap a of the bundle A and flows down toward a lower position, resulting in desired drainage.

(Effect of the invention) This project is a culvert with a buried drainage channel made of a bundle of vertically divided rods of thin rods and thick rods. In addition, it is possible to have a large cross-sectional area for flowing water, and the overall weight of the culvert makes it easy to transport.Also, even if a construction machine passes over the culvert, it will only flex and not break; Another advantage is that clogging of the water flow gap is eliminated.

[Brief explanation of drawings]

Figure 1 is a perspective view of the focusing body, Figure 2 is an end view of the same,
FIG. 3 shows the buried state. 1 is a thin rod, 2 is a vertically divided rod, 3 is a metal wire, A is a bundle, B is a groove, and a is a gap.

Claims (1)

[Scope of utility model registration request] A culvert characterized in that vertically divided rods of a thin rod and a thick rod are bundled to a predetermined thickness to form a bundle, and the bundle is buried in series in the soil.