JPS62242017A - Method for constructing landslide-or-the-like proofing with filter system collecting and drain pipe - Google Patents

Abstract

PURPOSE:To prevent a collecting pipe from being deeply buried and prevent a collecting port from being blocked, by burying the collecting and drain pipe having a filter unit with artificial flocking or by inserting the pipe into a boring land slot. CONSTITUTION:When a collecting and drain pipe 1 is inserted, then a cavity between the external section of the pipe and a slot wall 5 is occupied by a filter unit 3. Even if the slot wall 5 is loosened, it is prevented from falling down because the filter unit 3 has elasticity and because the slot wall 5 is supported by the filter unit 3. Through the filter unit 3, fine soil particles coming with water in coil 7 are filtered, and rough and water-permeable soil particles only are retained. As a result, water in soil is collected or drained very smoothly, and the accidents of landslide and the like due to standing water in soil can be perfectly eliminated.

Description

[Detailed description of the invention] (b) Industrial application field Construction industry related to disaster prevention projects.

(B) Conventional technology Conventionally, there are two types of water collection pipes: one is simply a water collection pipe with a water collection port, and the other is a net-shaped water collection pipe, which is inserted or buried in the soil to collect water. Met.

(c) Problems to be solved by the invention In general, as a construction method for preventing landslides, etc., a borehole for collection and drainage is constructed in the soil, and collection and drainage is carried out into this hole.
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Aq/l”1M!-*Two years ago, a method was taken to drain the water.However, since this collection and drainage pipe is inserted into a large diameter borehole, the borehole wall and the collection and drainage pipe have to be connected to each other. There is some void between them.

Although it varies depending on the soil quality, five to ten years after construction, the ground around the hole loosens, the hole wall collapses, burying the hole and the collection and drainage pipe, and further blocking the water collection port. As a result, the water in the soil becomes clogged, and the water in the ground becomes stagnant, causing landslides and other disasters to occur again.

(d) Means for solving the interstitial layer In order to eliminate these drawbacks, a filter body made of artificial hair is fixed to the part buried in the soil around the pipe so as to be integrated with the collection and drainage pipe.

This artificially flocked filter body is resistant to decay and has elasticity, and by inserting it tightly, it can support the hole wall and prevent it from collapsing. It passes through the fine soil particles that are washed away, and retains only the coarse and highly permeable soil particles. As a result, burying of the water collection pipe and clogging of the water collection port are prevented.

(e) Example of a practical gallery A practical example of the present invention will be explained step by step with reference to the attached drawings. Figure 1 shows a central longitudinal cross-sectional view of a swordsmith. Toki, Dochu 7
A hole is bored by drainage boring, and a collection and drainage pipe 1 integrated with a filter body 3 with artificial flocking is inserted or buried in this hole.

FIG. 2 is a vertical cross-sectional view of the -MK large center inside the water collection and drainage borehole, and FIG. 3 is a cross-sectional view. When the collection and drainage pipe 1 is inserted, the filter body 3 occupies the cavity between the outside of the pipe and the hole wall 5. Even if the hole wall 5 loosens, the filter body 3 has elasticity and supports the hole wall 5, preventing it from collapsing and preventing the sinking of the inside of the hole and the drainage pipe. Furthermore, the filter body 3 allows fine soil particles washed away by the water in the soil 7 to pass through, and presses only coarse soil particles with good water permeability into the seedlings, thereby preventing clogging of the water collection port 2. .

In addition, when inserting or burying the actual drainage pipe 1,
The water collection port 2 is installed so that it is not located in the flowing water part of the lower part of the inner wall of the collection and drainage pipe 1. For this reason, the artificial flocked filter body 3 is not required at the bottom of the outer wall of the collection and drainage pipe 1, and it is economical and convenient to reduce the amount of artificial flocking toward the bottom of the collection and drainage pipe 1 as shown in the figure. .

(F) Effects of the Invention The function and life of the drainage drainage boring according to the present invention are greatly expanded and extended compared to conventional ones. Furthermore, even if clogging occurs due to scale, it is easy to clean and the hole walls are prevented from collapsing due to the cleaning water.

As a result of the above, underground water collection and drainage become extremely smooth, and accidents such as landslides due to standing water in the soil are completely eliminated, which is an epoch-making effect that has not been seen before.

[Brief explanation of drawings]

FIG. 1 is a central vertical cross-sectional view of the artificially flocked filter-type water collection and drainage pipe of the present invention inserted into the soil of a landslide or the like. FIG. 2 is a partially enlarged central longitudinal sectional view of the present invention. FIG. 3 is a -f4 enlarged cross-sectional view of the present invention. 1... Collection and drainage pipe 2... Water collection port 3... Artificial flocked filter body 4...
Inside the pipe 5... Hole wall 6... Prepayment 7... Under the soil patent developer Shoji Nobuno

Claims (1)

[Claims] A landslide prevention method in which a collection and drainage pipe with a filter body made of artificial flocking is buried or inserted into the soil of a borehole.