JP3585380B2 - Impermeable wall for gutter pipe - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an improvement of a water-impervious wall for shutting off a water passage around a gutter pipe buried in a dike or the like.
[0002]
[Prior art]
In some cases, river dikes are provided with gutter pipes at the base of the dike to drain the increased water to another river or wastewater treatment plant in order to prevent flooding and breakage of the dike during flooding.
[0003]
By the way, when the gutter pipe 2 penetrates the embankment 1, as shown in FIG. 7, the water path W is easily formed along the gutter pipe 2, and there is a possibility that the water of the river may permeate when the water is increased.
Therefore, when the gutter pipe 2 is provided, it is necessary to provide a flange-shaped impermeable wall 3 for preventing permeation of water.
[0004]
Conventionally, as a method of providing this impermeable wall, the embankment 1 is cut open as shown by the dotted line and a concrete impermeable wall is constructed using a formwork, or the inner wall surface of the ground that can be cut and excavated is used as a formwork as it is. It has been practiced to form a water barrier by injecting cement milk.
[0005]
[Problems to be solved by the invention]
However, excavation of the embankment 1 as in the above construction method has a problem that traffic on the embankment is obstructed and the construction becomes large.
[0006]
In addition, since the above-mentioned method builds a water-impervious wall around the existing pipe, there is a concern that a gap may be formed between the water-impervious wall and the outer periphery of the pipe.
In order to solve such a problem, the applicant of the present application arranges a gutter pipe 2 on the embankment 1 by arranging a propulsion gutter pipe 2A having a special structure near the center of the propulsion pipe, and after penetrating the pipe, the above-mentioned special gutter pipe 2A. The surrounding soil is excavated from the gap of the wall of the propulsion gutter pipe 2A having the structure to form a groove 3A in which a water impervious wall can be arranged from inside the pipe as shown in FIG. 8, and a large number of fan-shaped pieces 3C. And sequentially assembling them to form the impermeable wall 3.
[0007]
The water impervious wall 3 finally extends while joining a large number of fan-shaped pieces 3C... 3C from inside the pipe to outside the pipe as shown in FIG. There is no fear of being able to do it. In addition, there is an advantage that the embankment is not cut away from the surface, so that there is no adverse effect such as traffic interruption in the surrounding area.
[0008]
[Problems to be solved by the invention]
However, in the case of the above-described method, the assembling work is a work of repeatedly connecting a large number of disassembled pieces 3C... Within a narrow pipe, so that the work is considerably severe. In addition, as shown in FIG. There is a problem that the gap P into which the fan-shaped piece 3C is inserted becomes narrow, and welding work and insertion work become difficult.
[0009]
In particular, there is a problem that the work becomes very difficult with a pipe having a diameter which can be finally entered by a person.
The present invention has been made for the purpose of solving the above problems, and has been made for the purpose of providing a gutter pipe impermeable wall in which a gutter pipe can be easily installed when a gutter pipe is provided. Things.
[0010]
[Means for Solving the Problems]
In the watertight wall for a gutter pipe according to the first aspect, a watertight wall member made of a foldable material is fixed to an outer surface of a short tubular core that can be fixed to an inner surface of the gutter pipe, and a circular shape is formed on the outer edge of the watertight wall member by spring-like elasticity. An elastic core member that maintains an annular shape and is foldable is fixed.
[0011]
According to this impermeable wall for gutter pipes, the elastic core member at the outer edge of the impermeable wall can be easily folded into the pipe together with the impermeable wall member, and can be restored to an annular shape by releasing the folding inside the pipe. This made it possible to form impermeable walls at once.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the present invention will be described.
Embodiment 1
FIG. 1 is a front view of a gutter pipe impermeable wall according to Embodiment 1 of the present invention, and FIG. 2 is a sectional view taken along line XX of FIG.
[0013]
In FIGS. 1 and 2, a gutter pipe impermeable wall 6 is a disc-shaped and foldable material fixed to the outer surface of a short tubular core 7 that can be fixed to the inner surface of the gutter pipe 2 (FIG. 2), for example, rubber. A water-impervious wall member 8 formed of a sheet, a rubberized canvas, a waterproofed canvas, a waterproof and lightweight synthetic resin thin cloth, and fixed along the circumference to the outer edge of the water-impervious wall member 8 And the elastic core member 9 formed.
[0014]
The elastic core member 9 is formed by joining both ends of a strip made of spring steel in an annular shape or by joining both ends of an elongated hard helical spring in an annular shape. It is integrated by attaching it or inserting it through an elongated tubular space formed along the outer edge.
[0015]
Then, as shown in FIG. 3, the water impervious wall member 8 is twisted as shown by the arrows to form three rings, and then folded into three small pieces in the axial direction. It is configured so that it can be restored and deformed. In addition, if the above-mentioned fold is made into five wheels and it is made to fold into five in an axial direction wheel, it can be folded further smaller.
[0016]
The short tubular core 7 is also made of rubber or an elastic synthetic resin so that it can be folded and carried into the pipe, similarly to the impermeable wall member 8.
Next, a method of constructing a gutter pipe impermeable wall using the gutter pipe impermeable wall will be described.
[0017]
As shown in FIG. 4, the joining liner of the special gutter pipe 2a constituting the buried pipe is removed from the inside of the pipe to form a circumferential pipe opening 2b, and the buried ground G is removed from the opening 2b. Excavation is performed in a concentric disk shape centering on the gutter tube 2 (11 in the figure).
[0018]
Next, in the folded state, the gutter pipe impervious wall 6 is carried into the gutter pipe 2, the concentric disc-shaped excavation part 11 is carried with the folded impermeable wall member 8, and the folding force of the elastic core member 9. Cancel.
[0019]
By this release, the elastic core member 9 is restored to its original circumferential shape. However, when the elastic core member 9 does not automatically expand due to its own weight or the like, the entire body is loosened or pushed with a stick to assist the expansion.
[0020]
After being developed into a disk shape, as shown in FIG. 5, the short tubular core 7 is erected and fixed in the opening 2b of the special gutter tube 2a, and is fixed from the inner surface with a fastener such as a liner or bolt (not shown). I do.
[0021]
Next, an air bleeding pipe 14 is erected along the impermeable wall member 8, and grout 12 (FIG. 6) is injected from the inlet 7a while discharging the air stored in the upper part of the groove 11, as shown in FIG. Let it cure.
[0022]
Therefore, according to the above, if the folding force is released after inserting the water-impervious wall member into the excavated groove, the water-impervious wall can be easily deployed in the pipe and the construction of the water-impervious wall becomes very easy.
[0023]
【The invention's effect】
As described above, according to the present invention, when installing a gutter pipe on a dike and attaching a gutter pipe, the folding force for the gutter pipe previously folded into the gutter pipe mounting space excavated from the pipe is carried in, and then the folding force is applied. Can be easily unfolded into a disk shape, eliminating the need for any monotonous and repetitive assembly work to construct the impermeable wall as in the past. It will be easier.
[Brief description of the drawings]
FIG. 1 is a front view of an embodiment.
FIG. 2 is a sectional view taken along line XX of FIG.
FIG. 3 is a front view showing a folded state.
FIG. 4 is a process explanatory view of a method of constructing a gutter pipe impermeable wall.
FIG. 5 is a process explanatory view of a method of constructing a gutter pipe impermeable wall.
FIG. 6 is a process explanatory view of a method of constructing a gutter pipe impermeable wall.
FIG. 7 is an explanatory view of a water impervious wall of a propulsion gutter tube.
FIG. 8 is an explanatory diagram of a construction state of a propulsion gutter tube.
FIG. 9 is a structural explanatory view of a conventional water barrier wall for a propulsion gutter pipe.
[Explanation of symbols]
2 Gutter pipe 2a Special type gutter pipe 2b Pipe opening 6 Gutter pipe impermeable wall 7 Short tubular core 8 Impermeable wall member 9 Elastic core member

Claims (1)

An impermeable wall member made of a foldable material is fixed to the outer surface of the short tubular core that can be fixed to the inner surface of the gutter pipe, and an elastic core member that maintains an annular shape by spring-like elasticity at the outer edge of the impermeable wall member and is foldable. The impermeable wall for gutter pipes to which is fixed.

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