JPH08232232A - Method for attaching cutoff wall to sluice - Google Patents

Abstract

PURPOSE: To enable construction to be achieved with the use of a small vertical hole and to enable the range wherein an embankment is dug open to be reduced. CONSTITUTION: To attach a planar cutoff wall 5 to a sluice 1 buried in an embankment 2, a local part of the embankment 2 is dug to form a vertical hole 9, inside which the cutoff wall 5 with a through hole 6 formed in its center is installed. The sluice 1 is laid in the embankment 2 by propulsion method and passed through the through hole 6 in the cutoff wall 5, and a seepage- stopping ring 8 having elasticity and split into halves is fitted around the outer peripheral surface of the sluice 1 inside the vertical hole 9 and is pressed in between the inner peripheral surface of the through hole 6 and the outer peripheral surface of the sluice 1 by moving in the direction of the axis 10, after which the vertical hole 9 is backfilled. Since concrete is not placed as in conventional cases but the planar cutoff wall 5 is buried, a space to provide concrete forms and hence a space to remove the forms are not required.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of mounting a water blocking wall around a gutter pipe buried in a bank or the like.

[0002]

2. Description of the Related Art Conventionally, as a method of attaching a water blocking wall to a gutter pipe of this type, for example, as shown in FIG. 6, first, a gutter pipe 24 is laid on the embankment 21 by a propulsion method, and then the embankment 21 is installed. By digging open and placing concrete 22 thickly, impermeable walls
23 was formed at a predetermined position of the gutter pipe 24.

[0003]

However, in the above-mentioned conventional type, since the water-impervious wall 23 is formed by casting the concrete 22 thickly, when the concrete 22 is cast, the formwork for concrete is used. A space for installing the mold is required, and a space for removing the formwork after the driving is required. Therefore, there is a problem in that the embankment 21 at the mounting portion of the impermeable wall 23 must be dug over a wide area shown by the phantom line A in FIG.

The present invention solves the above-mentioned problems, and when installing the impermeable wall, it is possible to narrow the range in which the dike is dug and open, and the seal between the impermeable wall and the gutter pipe can be easily and reliably performed. The purpose of the present invention is to provide a method of attaching a water blocking wall to a gutter pipe that can be performed.

[0005]

In order to solve the above problems, the method of mounting the impermeable wall to the gutter pipe according to the present invention is to install a flat impermeable wall around the gutter pipe embedded in the dike. The local location of the impermeable wall of the above levees is dug to form a pit, and the impermeable wall with a through hole in the center is installed in this pit, and a gutter pipe is laid on the levee by the propulsion method. The water-blocking ring, which has elasticity and is formed in an annular shape, is fitted onto the outer peripheral surface of the gutter pipe inside the vertical hole, and the water-blocking ring is inserted into the gutter pipe. Is pushed in between the inner peripheral surface of the through hole and the outer peripheral surface of the gutter tube, and then the vertical hole is backfilled.

[0006]

[Advantage] According to the above construction, instead of laying a gutter pipe and then placing concrete as in the conventional case, a flat water impervious wall is buried and then the gutter pipe is pierced through the impermeable wall. The space for installing the formwork and the space for removing this formwork are not required, and therefore it is possible to construct with a small vertical hole, and to narrow the range of excavating the embankment.

Before mounting the water stop ring on the gutter pipe,
Since the gutter pipe is penetrated through the through hole of the water shield wall by the propulsion method, the gutter pipe can be easily penetrated through the through hole of the water shield wall. After that, by pushing the water-stop ring between the inner peripheral surface of the through hole of the impermeable wall and the outer peripheral surface of the gutter pipe, the water stop ring becomes the outer peripheral surface of the gutter pipe and the inner peripheral surface of the through hole. Since it closely adheres to and, the space between the gutter pipe and the impermeable wall is reliably sealed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 4, reference numeral 1 denotes a gutter pipe buried in the dike 2. This gutter pipe 1 is used to prevent the overflow of the dike 2 and the collapse of the dike 2 when the river increases. It is for draining to another river or wastewater treatment plant. The gutter pipe 1 is configured by connecting a large number of pipe bodies 3.

At a predetermined position of the gutter pipe 1, a water blocking wall 5 functioning as a baffle plate is attached to a water escape passage 4 which may be formed along the outer surface of the gutter pipe 1. As shown in FIGS. 1 and 5, the impermeable wall 5 is made of a steel plate, is formed in a rectangular flat plate shape in a front view, and has a through hole 6 in the central portion. The diameter A of the through hole 6 is set to be larger than the outer diameter B of the gutter tube 1, and when the gutter tube 1 penetrates the through hole 6, the inner peripheral surface of the through hole 6 and the outer peripheral surface of the gutter tube 1 are separated from each other. A gap 7 is formed between them.

The gap 7 is sealed by a water stop ring 8. As shown in FIGS. 1 and 3, the water blocking wheel 8 is made of an elastic rubber material in an annular shape and has an outer peripheral surface formed in a tapered shape.
It has a half-split structure composed of one ring piece 8a and the other ring piece 8b that are divided. The outer diameter C at one end of the water stop ring 8 is smaller than the diameter A of the through hole 6, and the outer diameter D at the other end of the water stop ring 8 is larger than the diameter A of the through hole 6. Has been formed.

According to this, first, as shown in FIG.
A vertical hole 9 is formed by locally excavating the place where the impermeable wall of the embankment 2 is installed. Then, the impermeable wall 5 is installed in the vertical hole 9. After that, the pipes 3 are replenished by the propulsion method while being sequentially pressed horizontally from one to the other to lay the gutter pipe 1 on the dike 2 and to penetrate the through hole 6 of the impermeable wall 5. On this occasion,
Since the gap 7 is formed between the inner peripheral surface of the through hole 6 and the outer peripheral surface of the gutter pipe 1, the gutter pipe 1 can be easily penetrated into the through hole 6 of the impermeable wall 5.

Next, an operator enters the vertical hole 9 and puts one wheel piece 8a and the other wheel piece 8b on the outer peripheral surface of the gutter pipe 1 to stop water as shown in FIG. The ring body 8 is set on the outer peripheral surface of the gutter pipe 1, and the water blocking ring body 8 is moved in the axial direction 10 of the gutter pipe 1 so that the inner peripheral surface of the through hole 6 and the outer peripheral surface of the gutter pipe 1 are separated from each other. Push in between. As a result, as shown in FIG.
Since the water stop ring 8 is in close contact with the outer peripheral surface of the gutter pipe 1 and the inner peripheral surface of the through hole 6, the gutter pipe 1 and the water blocking wall 5 are reliably sealed. At this time, since the outer peripheral surface of the water blocking wheel 8 is formed in a tapered shape, the water blocking wheel 8 can be easily pushed by pushing it into the through hole 6 from the small-diameter side end of the water blocking wheel 8. In addition, it can be pushed between the impermeable wall 5 and the gutter pipe 1, and can be firmly bitten by the wedge action.
Then, the vertical hole 9 is backfilled.

According to the above-mentioned method, instead of laying a gutter pipe and then placing concrete as in the conventional method, a flat water shield wall 5 is buried and then the gutter pipe 1 is passed through the water shield wall 5. Therefore, a space for providing a formwork for concrete and a space for removing this formwork are not required, and therefore construction can be performed with a small vertical hole 9 and the range in which the bank 2 is dug can be narrowed.

In the above-mentioned embodiment, as shown in FIG. 3, the water blocking wheel 8 has a split structure (half-split structure) consisting of one wheel piece 8a and the other wheel piece 8b. The structure may be divided into three or more or one structure. Moreover, when the tip portion of the gutter pipe 1 is projected into the vertical hole 9 by using a continuous water stop ring body 8 instead of the divided structure, the water stop ring body 8 is externally fitted from the tip portion of the gutter pipe 1. You may.

[0015]

As described above, according to the present invention, instead of laying a gutter pipe and then placing concrete as in the prior art, a flat water shield wall is buried and the gutter pipe is used as a water shield wall. Since there is no need to provide a space for a concrete formwork or a space for removing this formwork, the construction can be performed with a small vertical hole, and the range in which the embankment is dug can be narrowed.

Also, before mounting the water stop ring to the gutter pipe,
Since the gutter pipe is penetrated through the through hole of the water shield wall by the propulsion method, the gutter pipe can be easily penetrated through the through hole of the water shield wall. After that, by pushing the water-stop ring between the inner peripheral surface of the through hole of the impermeable wall and the outer peripheral surface of the gutter pipe, the water stop ring becomes the outer peripheral surface of the gutter pipe and the inner peripheral surface of the through hole. Since it closely adheres to and, the space between the gutter pipe and the impermeable wall is reliably sealed.

[Brief description of drawings]

FIG. 1 is a side view for explaining a method of attaching an impermeable wall to a gutter pipe according to an embodiment of the present invention.

FIG. 2 is a side view for explaining a method of attaching the water blocking wall to the gutter pipe.

FIG. 3 is a front view of a water blocking wheel.

FIG. 4 is a cross-sectional view of an embankment in which a gutter pipe and an impermeable wall are buried.

5 is a view on arrow XX in FIG. 4. FIG.

FIG. 6 is a cross-sectional view of an embankment in which a gutter pipe and an impervious wall are buried in a conventional example.

[Explanation of symbols]

 1 Gutter pipe 2 Levee 5 Impermeable wall 6 Through hole 8 Water stop ring 9 Vertical hole 10 Axial direction

Claims (1)

[Claims] 1. When installing a plate-shaped impermeable wall around a gutter pipe to be buried in a levee, a vertical hole is formed by locally digging the location of the impermeable wall of the levee, and a central hole is formed in the vertical hole. An impermeable wall with an elastic ring formed by installing a water barrier with a through hole in the section and laying a gutter pipe on the embankment by the propulsion method to penetrate the through hole of the water barrier. Is fitted on the outer peripheral surface of the gutter pipe in the vertical hole, and the water blocking ring is moved in the axial direction of the gutter pipe to be pushed between the inner peripheral surface of the through hole and the outer peripheral surface of the gutter pipe. After that, a method of attaching the impermeable wall to the gutter pipe, which is characterized by backfilling the vertical hole.