JP2001173077A - Sewer structure and construction method for sewer structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sewer structure connecting a discharge port in a drainage occurrence place to a sewage pipe without using a service pipe and conducting a difficult work. SOLUTION: This sewer structure is provided with a sewage pipe 20 buried in the ground, and a discharge port 24 for receiving drainage from a drainage occurrence place 22 and discharging the drainage to the sewage pipe. The sewer structure is provided with a pit 26 formed above the sewage pipe, a first propulsive pipe 28 propelled from the pit to the sewer pipe, and a second propulsive pipe 30 propelled from the pit to the discharge port.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a sewage structure and a method for constructing the structure.

[0002]

2. Description of the Related Art Generally, a sewage structure is employed in which drainage from a private house, a business place, or another drainage point is discharged to a drain through a drainage outlet such as a drainage drain or a drainage pipe provided at the drainage point. Have been. When implementing this sewage structure,
Sewage pipes are buried in the road, but drainage stations are located on both sides of the road.For example, if there is another buried object on the road or if the irrigation channel runs along the road surface, drainage will occur. It is difficult to connect the drainage outlet of the plant and the sewer pipe.

[0003]

SUMMARY OF THE INVENTION Apart from the sewer pipe, 2
If the service pipes are laid in parallel with the sewer pipes on both sides of the road and the service pipe and the sewer pipe are connected, the drainage outlet and the service pipe need only be connected. Sex improves. On the other hand, laying two service pipes in addition to the sewer pipes causes a rise in equipment costs.

[0004] The present invention does not use a service pipe,
Further, the present invention provides a sewage structure for connecting a drainage outlet of a drainage point and a sewerage pipe without performing difficult work, and a method for constructing the same.

[0005]

SUMMARY OF THE INVENTION The present invention is a sewage structure comprising a sewer pipe buried underground and a drain outlet for receiving drainage from a drainage station and discharging the drainage to the drainage pipe. The sewage structure includes a shaft formed above the sewer pipe, a first propulsion pipe propelled from the shaft to the sewer pipe, and a second propulsion pipe propelled from the shaft to the drain outlet.
And a propulsion pipe.

In another invention, a first insertion pipe inserted into the first propulsion pipe and connected to the sewer pipe, and inserted into the second propulsion pipe and connected to the drain outlet. A second insertion pipe; and a connection pipe for connecting the first insertion pipe and the second insertion pipe in the shaft.

The present invention is also a method for constructing a sewage structure including a sewage pipe buried underground and a drainage outlet for receiving drainage from a drainage point and discharging the drainage to the drainage pipe. First, a shaft is formed above the sewer pipe. Next, the first pipe is propelled from the shaft toward the sewer pipe. Prior to or after the propulsion of the first pipe, a second pipe is propelled from the shaft to the drain outlet.

In another aspect of the invention, a hole is formed in the sewer pipe, a first insertion pipe is inserted into the first pipe, and connected to the sewer pipe at the hole.

In still another invention, a second tube is provided in the second tube.
And connected to the drain outlet. Then, the first insertion pipe and the second insertion pipe are connected in the shaft.

[0010]

[Operation and Effect] The drain, the drain outlet of the drainage station and the sewer pipe are connected by the shaft, the first propulsion pipe, and the second propulsion pipe, and no service pipe is required. When laying service pipes, the two service pipes need to extend parallel to the sewer pipes, substantially corresponding to the length of the sewer pipes.
In contrast, according to the present invention, the shaft, the first propulsion pipe, and the second propulsion pipe may be provided in a direction crossing the sewer pipe. In addition, when laying service pipes, it is necessary to lay service pipes in advance in anticipation of future needs, so the overall equipment cost rises. A shaft, a first propulsion pipe, and a second
Since the propulsion pipe is provided, the equipment cost can be reduced.

According to the form in which the insertion pipe is inserted into the propulsion pipe, the materials, strength, dimensions, etc. of the propulsion pipe and the insertion pipe are selected to be necessary and sufficient to fulfill their respective functions. it can. In other words, the propulsion pipe must be made of a material that can withstand friction and earth pressure during propulsion and must be dimensioned to be attached to the propulsion device, while the insertion pipe is made of a material that can withstand corrosion due to drainage and has a diameter that matches the drainage volume. can do. Therefore, the degree of freedom of design increases, and as a result, equipment costs can be reduced.

According to the method for constructing a sewage structure according to the present invention, it is possible to construct a shaft and to propel the first and second propulsion pipes by using a machine that can be constructed by a machine. Even if there are other buried objects other than sewer pipes and structures such as irrigation canals, the pipes can be propelled under them, so that it is possible to obtain a sewage structure without difficult work. it can.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1 in a sectional view, a sewage structure receives drainage from a sewage pipe 20 buried underground and a drainage point 22 and discharges the drainage to the sewage pipe 20. The sewage structure includes an outlet 24, and further includes a shaft 26, a first propulsion pipe 28, and a second propulsion pipe 30.

In the embodiment shown, the drain 20 is connected to the road 3
2 buried. Drainage stations 2 on both sides of road 32
2, 34, etc. are lined up. The drainage generating stations 22 and 34 are not only ordinary houses but also companies, factories, and public facilities. Normally, only one drain pipe 20 is provided along the road 32. Therefore, connecting the drain outlet 24 of the drainage point 22 on the right side of FIG. It is difficult if there is a buried object 36 or a structure 38 such as an irrigation channel.

A drain outlet 24 connected to the drainage generating station 22
After temporarily storing the wastewater from the wastewater generation point 22, the drainage can be drained, or the drainage pipe can be drained immediately without storing the wastewater.

In the illustrated embodiment, the drain outlet 24 is
5A, drainage basin 25B provided above shaft 25A,
It consists of a drain pipe 25C for guiding the drainage from the drainage generating station 22 to a drain 25B, and a drain pipe 25D backfilled with the shaft 25A and connected to the drain 25B. As described above, the drain outlet 24 may have a complicated form, and the drain pipe 25
It can be C, or even 25B. In short, any place that can discharge wastewater may be used.

Drainage from a drainage station 34 on the left side of the road is also discharged to drain 20 via a drainage outlet (not shown). In the illustrated embodiment, the drainage point 34 is the drain 2
0 and there is no buried object or structure between the sewage pipe 20 and the sewage pipe 20. Therefore, it is relatively easy to connect the sewage pipe 20 with the drainage outlet of the drainage generation place 34. It can be formed according to the sewage structure according to the present invention.

The shaft 26 is formed above the sewer 20. As is known per se, the shaft 26 is a device for embedding a cylindrical casing in the ground (for example, Japanese Patent Laid-Open No.
No. 4139).

The first propulsion pipe 28 extends from the shaft 26 to the sewage pipe 2.
0, and the second propulsion pipe 30 is
From the drain outlet 24.

In the embodiment shown, a bayonet pipe 40 is plugged into the first propulsion pipe 28 and connected to the sewer pipe 20, and a bayonet pipe 42 is plugged into the second propulsion pipe 30; It is connected to the drain outlet 24. Further, a connecting pipe 44 connects the insertion pipe 40 and the insertion pipe 42 in the shaft 26. As a result, the drainage from the drainage generating point 22 is discharged to the sewer pipe 20 via the drain outlet 24, the insertion pipe 42, the connection pipe 44, and the insertion pipe 40.

Instead of the above embodiment, the first propulsion pipe 28 is directly connected to the sewer pipe 20, the second propulsion pipe 30 is directly connected to the drain outlet 24, and the first propulsion pipe 28 is connected to the drainage outlet 24. Second
A sewage structure in which the propulsion pipe 30 is connected by a connecting pipe in the shaft 26 can also be adopted.

Next, referring to FIG. 2 to FIG. 7 showing the cross-sectional state, a sewer pipe 20 buried underground and a drain outlet for receiving drainage from a drainage generating station and discharging the drainage to the sewer pipe 20. The method for constructing the sewage structure including the components 24 and 24 will be described.

First, a shaft 26 is formed above the sewer pipe (FIG. 2). The shaft 26 includes a cylindrical casing 50 having a predetermined length.
Are pressed into the ground by the embedding device 52,
They are connected in the axial direction. After the casing 50 is pressed into the ground, the device 52 is removed. The depth of the shaft 26 is determined so that interference with the buried object 36 or the structure 38 does not occur when the pipe 30 is propelled (see FIG. 1).

After the shaft 26 is formed by the casing 50, it is preferable to cast concrete 54 at the bottom of the shaft 26 (FIG. 3) to secure the strength as a foundation and to stop water. When the concrete 54 is cast, a cylindrical guide cylinder 56 is embedded in the center.

After the shaft 26 is formed, the propulsion device 60 is carried into the shaft 26, and the propulsion device 60 is used to
The first pipe 28 is propelled from 6 toward the drain 20 (FIG. 4). When the first tube 28 is propelled, the guide tube 56 prevents the tube 28 from running.

Prior to the propulsion of the first tube 28, or
After propelling the second pipe 28, the second pipe 30 is propelled from the shaft 26 to the drain outlet 24 using the propulsion device 60 (FIG. 6). Either the first tube 28 or the second tube 30 may be propelled first.

According to the embodiment shown, the substantially vertical propulsion of the tube 28 and the substantially horizontal propulsion of the tube 30 are performed using the same propulsion device 60, so that separate propulsion devices are used. Equipment costs can be reduced as compared with the case of performing.

After propelling the first tube 28, the propulsion device 60
Attachment 62 is attached to, and a hole is made in sewage pipe 20 using core cutter 64 at the tip (FIG. 5). Since the sewer pipe 20 is buried underground, it is necessary to make a hole with a special attachment 62. On the other hand, since the drain outlet 24 can be approached from the ground, it is not necessary to make a hole with a special device, and it is sufficient to make a hole by hand.

After drilling a hole in the sewer pipe 20, the first pipe 28
And the sewage pipe 20 can be directly connected. For example,
A hollow rubber plug having a large diameter portion and a small diameter portion is prepared. The outer diameter of the large diameter portion of the plug is slightly larger than the inner diameter of the pipe 28, and the outer diameter of the small diameter portion is slightly larger than the diameter of the hole of the drain 20. The plug is pushed down to the lower end of the tube 28 using a suitable jig, and the small diameter portion is pressed into the hole.

In the embodiment shown in FIG. 6, after a hole 66 is made in the sewer pipe 20, the upper end of the pipe 28 is closed with a lid 68,
The tube 30 is propelled by the propulsion device 60. The pipe 30 and the drain outlet 24 can be connected by a method known per se.

As described above, the first pipe 28 and the drain 20
And a first tube 28 as shown in FIG.
The first insertion tube 40 is inserted into the
6 can be connected to the sewer 20. In this case, the first pipe 28 mainly takes charge of earth pressure and facilitates insertion of the insertion pipe 40.
The sewage pipe 20 can be simply kept in contact with the sewage pipe 20. After connecting the insertion pipe 40 and the sewer pipe 20, it is preferable to fill the gap between the pipe 28 and the insertion pipe 40 with mortar 70 and to firmly support the insertion pipe 40.

The second pipe 30 and the drain outlet 24 are directly connected to each other, and a second insertion pipe 42 is inserted into the second pipe 30 so that the insertion pipe 42 and the drain outlet 24 are connected to each other. They can also be linked. In this case, the second pipe 30 mainly bears the earth pressure and facilitates the insertion of the insertion pipe 42, and the second pipe 30 and the drain outlet 24 may be kept in a state of being simply in contact with each other. it can. After connecting the insertion pipe 42 and the drain outlet 24, it is preferable to fill the gap between the second pipe 30 and the insertion pipe 42 with the mortar 72 to firmly support the insertion pipe 42.

After the second insertion pipe 42 is inserted into the second pipe 30 and connected to the drain outlet 24, the first insertion pipe 40 and the second insertion pipe 42 are connected by the connection pipe 44 in the shaft 26. connect. The connection pipe 44 is a so-called flexible tube, and can easily connect the insertion pipes 40 and 42 to each other.

When the insertion tubes 40 and 42 are not used, the first
The pipe 28 and the second pipe 30 are connected in the shaft 28 by a connecting pipe made of a flexible tube similar to the connecting pipe 44. When the insertion pipe 40 is used but the insertion pipe 42 is not used, the insertion pipe 40 and the second pipe 30 are connected to each other in the shaft 26 by connecting pipes of different diameters made of flexible tubes.

When the above-mentioned sewage structure and the method of constructing the same are carried out, the shaft 26 can be formed and the pipes 28 and 30 can be propelled underground by using known devices. Further, a method described in Japanese Patent Publication No. 6-102917 can be used to make a hole in the sewer pipe 20 and connect the insertion pipe 40 and the sewer pipe 20. Next, a particularly preferred propulsion device 60 will be described.

The propulsion device 60 shown in FIGS. 8 to 11 uses a single device to move the pipe 28 up and down, and
Can be propelled in a substantially horizontal direction, but for the sake of convenience, the following description describes the case in which the tube 30 is propelled in the horizontal direction, and then describes the case in which the tube 28 is propelled in the vertical direction.

The base 80 is provided with a pair of mold steels 82 which are spaced apart in the horizontal direction perpendicular to the direction in which the pipe 30 is propelled, that is, spaced apart in the horizontal direction perpendicular to the plane of FIG. The first and second reaction forces 84 and 82
Are formed by welding to a reaction force receiver 86 and a plurality of flat bars 88. The screw adjustment type level jack 92 is used
Attached to.

The tube pusher 94 moves the die 82 of the base 80 between the starting point shown by the solid line in FIG. 9 and the end point shown by the imaginary line.
It is movable along. The tube pusher 94 has a flange 96 for connecting a tube to be propelled. Flange 9
6 is rotated by a hydraulic motor 98. Pipe pusher 94
Is movable between a starting point and an ending point, and as the flange 96 rotates, the tube to be propelled is rotated while being extruded.

A pair of guides 100 spaced apart in the lateral direction
Are attached to the first reaction force receiver 84 and the second reaction force receiver 86. The tube pusher 94 has through holes into which a pair of guides 100 can be inserted.
00 is inserted and supported, and can move along the guide 100.

The first reaction force receiver 84 is fixed to an end of the base 80 on the starting point side of the tube pusher 94, and is substantially upright.

The second reaction force receiver 86 is fixed to the end of the base 80 on the end point side of the tube pusher 94, and is substantially upright.

The cylinder device having a cylinder and a piston rod and detachable from the tube pusher 94 can be used when the second tube 30 is propelled and when the first tube 28 is propelled.
The cylinder and the piston rod are arranged so that their directions are reversed. In each case, the cylinder is
, But when the piston rod is propelled through the second tube 30, it is connected to the first reaction
When the propulsion 8 is propelled, it is connected to the second reaction force receiver 86.
As long as such a connection is maintained, a single cylinder device can be used.

In the embodiment shown, the two cylinder devices 102 used when propelling the second tube 30 and the two cylinder devices 1 used when propelling the first tube 28 are used.
04 is provided. Cylinder devices 102, 104
Are formed independently of each other. The cylinder device 102 has a cylinder 106 and a piston rod 108, and when the second tube 30 is propelled, as shown in FIG. 9, the cylinder 106 is engaged with the tube pushing table 94, and the piston rod 108 is moved to the second position. It is used in connection with one reaction force receiver 84. On the other hand, the cylinder device 104 includes a cylinder 110,
When the first pipe 28 is propelled with the piston rod 112, the cylinder 110 is engaged with the pipe pusher 94 to connect the piston rod 112 to the second reaction force receiver 86 as shown in FIG. Used as

As shown in FIG. 8, a plate 114 is bolted to the piston rod 108 of the cylinder device 102, and the plate 114 is overlapped with the reaction force receiver 84 and bolted, so that the piston rod 108 It is connected to the receiver 84. On the other hand, the tube pusher 94 has two through holes 116 above the guide 100 as shown in FIG. The cylinder 106 is inserted into the through hole 116, and a flange 109 is provided at the end where the piston rod 108 protrudes.
The cylinder 106 is engaged with the tube pushing table 94 by abutting the tube pushing table 94 on the right side surface in FIG.

In the cylinder device 104, the piston rod 112 and a part of the cylinder 110 are inserted into the through-hole 116 of the tube pusher 94, and the piston rod 112 is bolted to the reaction force receiver 86 so that the piston rod 112 is It is connected to. On the other hand, the flange 118 provided on the cylinder 110 is
The cylinder 110 is engaged with the tube pusher 94 by being bolted by overlapping with the cylinder 17. Thus, cylinder 1
In the case of the cylinder device 102, the manner in which the cylinders 106 and 110 engage with the tube pushing table 94 is different. In the case of the cylinder device 102, so-called rearrangement is performed, and the entire stroke is completed by two stroke movements. It is due to not changing. In other words, the two types of cylinder devices 10
2 and 104, the cylinder device 10
2, the overall length of the cylinder device 104 can be increased.

To propel the tube 30 in a substantially horizontal direction, the propulsion device 60 is transported into the shaft 26 and
Is mounted substantially horizontally, and the tube 30 is attached to the tube holder 94. Cylinder 10 of cylinder device 102
6 is inserted into the through hole 116 of the tube pusher 94, and the flange 109 abuts on the periphery of the through hole 116. At this time,
As shown in FIG. 9, the cylinder 106 is preferably supported by a support plate 120 movable along the guide 100. After the pressurized fluid is introduced into the cylinder device 102 to extend one stroke, the cylinder 106 is pulled back and
Insert an inverted U-shaped cotter into 22 and extend it again.
By this operation, the cylinder device 102 moves the cylinder 10
6. Make a stroke substantially twice the length of 6.

In order to propel the pipe 28 in a substantially vertical direction, as shown in FIG. 11, the section steel 82 of the base 80 is installed substantially vertically. At this time, it is preferable to connect and fix the reaction force receiver 86 to the separately provided base 124.
This is because the reaction force receiver 86 is relatively small, so that the stability is enhanced. The piston rod 112 of the cylinder device 104 and a part of the cylinder 110 are inserted into the through-hole 116 of the tube pusher 94 and the flange 118 of the cylinder 110 is inserted.
Is connected to the flange 117, and is connected to the reaction force receiver 86 while the piston rod 112 is extended. When the tube 28 is mounted on the tube pusher 94 and the pressurized fluid is directed to reduce the cylinder device 104, the tube 28 is propelled downward.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a sewage structure according to the present invention, taken along a plane perpendicular to an axis of a sewage pipe.

FIG. 2 is a schematic view showing one step of a method of constructing a sewage structure according to the present invention in a sectional state.

FIG. 3 is a schematic view showing another process of the method of constructing a sewage structure according to the present invention in a sectional state.

FIG. 4 is a schematic view showing still another process of the method for constructing a sewage structure according to the present invention in a sectional state.

FIG. 5 is a schematic view showing still another process of a method of constructing a sewage structure according to the present invention in a cross-sectional state.

FIG. 6 is a schematic view showing still another process of the method of constructing a sewage structure according to the present invention in a sectional state.

FIG. 7 is a schematic view showing a cross section of a sewage structure completed by a method for constructing a sewage structure according to the present invention.

FIG. 8 is a side view of the pipe propulsion device, in which two cylinder devices are shown in an exploded state for convenience of explanation.

FIG. 9 is a side view of a pipe propulsion device incorporating one cylinder device.

FIG. 10 is a front view of the tube pusher.

FIG. 11 is a side view in which a pipe propulsion device is installed so as to propel the pipe in a vertical direction.

[Explanation of symbols]

 Reference Signs List 20 sewage pipe 22, 34 drainage point 24 drainage outlet 26 shaft 28 first propulsion pipe 30 second propulsion pipe 40, 42 insertion pipe 44 connecting pipe 60 propulsion device

Claims (5)

[Claims] A sewage structure comprising a sewer pipe buried underground and a drain outlet for receiving drainage from a drainage station and discharging the drainage to the drainage pipe. A sewage structure, comprising: a shaft that is propelled from the shaft; a first propulsion tube that is propelled from the shaft to the sewer pipe; and a second propulsion pipe that is propelled from the shaft to the drain outlet. 2. A sewage structure comprising a sewage pipe buried underground and a drainage outlet for receiving drainage from a drainage station and discharging the drainage to the sewage pipe. A first propulsion pipe propelled from the shaft to the sewer pipe, a second propulsion pipe propelled from the shaft to the drain outlet, and inserted into the first propulsion pipe, A first insertion pipe connected to a water pipe; a second insertion pipe inserted into the second propulsion pipe and connected to the drain outlet; the first insertion pipe and the second The sewage structure according to claim 1, further comprising: a connection pipe connecting the insertion pipe in the shaft. 3. A method for constructing a sewage structure comprising a sewage pipe buried underground and a drainage outlet for receiving drainage from a drainage station and discharging the drainage to the drainage pipe. Forming a shaft above the shaft, propelling a first tube from the shaft toward the sewer, prior to or after propelling the first tube from the shaft. A method of constructing a sewage structure, comprising propelling a second pipe toward the drain outlet. 4. The method of claim 3, including drilling a hole in the sewer pipe, inserting a first bayonet pipe in the first pipe, and connecting to the sewer pipe at the location of the hole. How to build a sewage structure. 5. Inserting a second insertion pipe into the second pipe and connecting to the drain outlet, connecting the first insertion pipe and the second insertion pipe in the shaft. The method for constructing a sewage structure according to claim 4, comprising: