JP3589574B2 - 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, the water path W is easily formed along the gutter pipe 2 as shown in FIG.
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]
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 pipe wall of the propulsion gutter pipe 2A having the structure to form a groove 3A in which the impermeable wall can be arranged from inside the pipe as shown in FIG. 11, and a large number of fan-shaped pieces 3C. And sequentially assembling them to form the impermeable wall 3.
[0007]
As shown in FIG. 12, the water impermeable wall 3 finally extends while joining a large number of fan-shaped pieces 3C... 3C from the inside of the pipe to the outside of the pipe, so that a water path is formed between the pipe wall and the impermeable wall. 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... In a narrow pipe, so that the work is considerably severe. In addition, as shown in FIG. There has been a problem that the gap P for inserting the fan-shaped piece 3C gradually becomes narrow, and the welding operation and the insertion operation 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 the inner surface of the gutter pipe, and a tube body is integrally formed in a radial direction of the watertight wall member. The short tube core is formed and provided with an injection port communicating with the tube body on the inner surface of the short tubular core.
[0011]
The water barrier wall is made of a foldable material, and can be folded together with the short tubular core to make it easier to carry into the pipe. At the time of molding, the water barrier wall can be formed at once by injecting fluid into the tube. It was.
[0012]
According to a second aspect of the present invention, there is provided a watertight wall for a gutter pipe, wherein a support bone can be inserted into a radial tube of the watertight wall member from the inner surface of the short tubular core.
Therefore, if the supporting bone is inserted through the radial tube, the impermeable wall can be deployed and expanded at a stretch, and the operation is completed in a short time.
[0013]
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.
[0014]
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, a rubber sheet. Wall member 8 formed of rubberized canvas, waterproof cloth, or the like; tubes 9 ... 9 integrally formed in a radial array along the radial direction of the water barrier wall member 8; 7 and a fluid injection port 10 formed on the inner surface.
[0015]
When the fluid to be injected into the tube 9 is other than gas, a liquid injection path 9a, an air discharge path 9b, and an air outlet 11 are provided in the tube 9 as shown in FIG.
[0016]
The short tubular core 7 is made of rubber or a synthetic resin having elasticity so that it can be folded and carried into the pipe, similarly to the water shielding 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, the gutter pipe impervious wall 6 is carried into the gutter pipe 2 in the folded state, and is rolled into the concentric disc-shaped excavation unit 11, and the whole is stored in the excavation unit 11. Then, as shown in FIG. 5, the short tubular core 7 is erected and fixed to the opening 2b of the special gutter tube 2a, and is fixed from the inner surface with a fastener (not shown) such as a liner or a bolt.
[0019]
Next, a hardening fluid such as air, liquid, or cement slurry is press-fitted from the inlet 10 to expand the radial tube body 9, and the impermeable wall member 8 is automatically developed into a disk shape in the excavation part 11. Let it.
[0020]
At this time, when a liquid other than air or a curable fluid is injected, the internal air is exhausted through the exhaust path 9b and the exhaust port 11 shown in FIG. 3, and then the contents are tightly filled and sealed.
[0021]
After that, as shown in FIG. 6, an air vent pipe 14 is erected along the impermeable wall member 8, and grout 12 (FIG. 7) is injected from the inlet 7a while discharging the air stored in the upper part in the groove 11. Then, it is cured as shown in FIG.
[0022]
Therefore, according to the gutter pipe impermeable wall according to the first embodiment, after the impermeable wall member is inserted into the excavated groove, air or fluid can be easily deployed by press-in, and the construction of the impermeable wall is very easy. It becomes.
Embodiment 2
FIG. 8 is a front view of the second embodiment.
[0023]
The gutter pipe impermeable wall 6 in the second embodiment has the same shape and material as the short tubular core 7 and the impermeable wall member 8 as in the first embodiment, but a tube formed on the impermeable wall member 8. Is different.
[0024]
That is, the tube 9 on the surface of the gutter pipe impermeable wall member 8 is provided not only in the radial direction but also along the outer peripheral edge in the circumferential direction.
In the drawing, 9a indicates an injection path, 9b indicates an air discharge path, and is used when a fluid other than air is press-fitted.
[0025]
In addition, an air vent hole (not shown) is formed in a mounting portion for the short tubular core 7 of the tubes 9 arranged radially in preparation for injecting a fluid other than gas from the injection path 9a.
[0026]
Therefore, in the case of the second embodiment, if the fluid is injected from the fluid injection port 10 and the tube 9 is expanded, the periphery also expands at the same time, so that the disk 9 can be reliably formed into a disk shape. In addition, when injecting a fluid other than a gas, if the openings of the tubes 9 with respect to the core 7 are sealed while sequentially checking the overflow of the injected material from the outlet of the tubes 9, the water impervious wall is automatically formed. Expand.
[0027]
After being formed into a disk shape in the groove 11, similarly to the first embodiment, an air release pipe 14 is erected along the impermeable wall member 8 as shown in FIG. The grout 12 (FIG. 7) is injected from the injection port 7a while discharging the stored air, and is cured as shown in FIG.
Embodiment 3
FIG. 9 is a sectional view of Embodiment 3 of the present invention.
[0028]
The gutter pipe impermeable wall 6 in the second embodiment has the same shape and material as the short tubular core 7 and the impermeable wall member 8 as in the first embodiment, but a tube formed on the impermeable wall member 8. Is different.
[0029]
That is, the support bones 13... 13 can be inserted radially into the tube 9 on the surface of the gutter pipe water-blocking wall member 8, and the support bone insertion port 9 c communicating with the tube body 9 is provided on the inner surface of the short tubular core 7. Structure. The insertion port 9c may also serve as the injection port 10 described in the first and second embodiments.
[0030]
Therefore, in the case of Embodiment 2 of the present invention, if the support bones 13 are sequentially inserted, the diameter of the water-blocking member 8 is increased in a disk shape.
The supporting bone 13 is inserted by bending it using elasticity as shown by a dotted line in the figure, and is inserted all at once at a length over the entire length. Hard rods shorter than the inner diameter may be sequentially connected and inserted into the tube 9.
[0031]
As shown in FIG. 5, the upper half of the water-blocking member 8 is folded by gravity in the excavation groove 11, so that it is difficult to insert the supporting bone 13. Therefore, the support bone 13 may be inserted over the entire circumference by inserting the support bone 13 in the lower half-hanging portion and sequentially rotating the water blocking member 8 together with the short tubular core 7.
[0032]
After the deployment and expansion, the grout 12 is injected into the excavation part 11 in the same manner as in the first embodiment, and the impermeable wall is constructed.
In order to smoothly inject and fill the grout 12, the air vent pipe 14 is disposed vertically along the impermeable wall member 8 as shown in FIG. 6, instead of being vertically erected as shown in FIG. The supporting bone 13a to be used is a hollow pipe, the tip of the hollow part is opened in the excavation groove 11 to form an air vent path to the insertion port 9c, and the grout 12 is injected from the grout inlet 7a while discharging the internal air. Is also good. In this case, installation of the air release pipe 14 can be omitted.
[0033]
After that, the air vent path 9c and the grout inlet 7a are sealed.
If the grout is cured after injection, the same state as shown in FIG. 8 is obtained, and the impermeable wall is completed.
[0034]
In FIG. 9, the supporting bone 13 inserted from each insertion opening 9c is used as a hollow pipe as an air bleeding path, and during filling work of the grout 12, sealing is performed in order from the insertion opening 9c where the lower grout 12 overflows sequentially. The air may be vented by moving.
[0035]
The construction of the impermeable wall for a gutter pipe is completed as described above. However, as shown in FIG. 8, the impermeable wall extends radially from the inside of the gutter pipe. There is no gap and the formation of water supply is reliably prevented.
[0036]
【The invention's effect】
As described above, the present invention, when installing a gutter pipe after arranging a gutter pipe on the embankment, after inserting a gutter pipe gutter pipe impermeable wall formed in advance to be foldable into the gutter pipe mounting space excavated from inside the pipe, Since it is only necessary to insert the supporting bone or deploy it by pressurizing and filling the fluid, there is no need for any assembly work that is a monotonous repetitive operation for constructing the impermeable wall as in the past, and construction of the impermeable wall Becomes very easy.
[Brief description of the drawings]
FIG. 1 is a front view of a first embodiment.
FIG. 2 is a sectional view taken along line XX of FIG.
FIG. 3 is a fragmentary cross-sectional view of another configuration example.
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 a sectional view showing a completed state of a gutter pipe impermeable wall.
FIG. 8 is a front view of the second embodiment.
FIG. 9 is a side sectional view of the third embodiment.
FIG. 10 is an explanatory view of a water impervious wall of a propulsion gutter.
FIG. 11 is an explanatory view of a construction state of a propulsion gutter tube.
FIG. 12 is an explanatory view of a structure of a conventional water barrier for a gutter pipe.
[Explanation of symbols]
2 gutter pipe 2a special gutter pipe 2b pipe opening 6 gutter pipe impermeable wall 7 short tubular core 8 impermeable wall member 9 tube body 10 inlet 11 concentric disc-shaped excavation part 12 grout G buried ground

Claims (2)

A water-blocking 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 tube, and a tube body is integrally formed in the radial direction of the water-blocking wall member. A gutter pipe impermeable wall with an inlet communicating with the body. An impermeable wall for a gutter pipe, wherein a support bone can be inserted into the radial tube of the impermeable wall member from the inner surface of the short tubular core.

Images