JPH028496A - Multi-cylinder type propulsive tube - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a propulsion pipe used in propulsion construction methods for constructing underground pipes.

(Prior art) Conventionally, as a pipe that crosses under a river, the pipe shown in Fig. 12 (a)
As shown in Figure 9.9, two tunnels with circular cross sections are used, one for the sewer and the other for the power cable, or in the case of two tunnels, sludge and sediment tend to accumulate inside the pipe, so As shown in FIG. 12(a), tube 1.
The inside of the tunnel is divided by a partition wall 11 to form two tunnels, one of which is used as a normal waterway and the other used as a backup waterway.

In other words, if sludge or the like accumulates in one channel, water is allowed to flow into the other channel, making it possible to clean the sludge.

In addition to the one shown in Figure 12 (a) above, there is also a
There are also tubes like those shown in Figure 2 (1).
Each of the pipes 12 is internally divided by partition walls 11 and 13, and the inside of the pipe may be used for multiple purposes, such as using one tunnel as a sewer or the like and the other for other purposes.

(Problem to be Solved by the Invention) However, in the case shown in FIG. 12 (A), two tunnels 9 and 9 are constructed and used for each purpose as described above, but The construction quantity such as tunnel 1
It is twice as large as a book, and the tunnel occupies a large area, which is particularly disadvantageous in urban areas.

Furthermore, in the case of FIG. 12 (a), in order to provide the partition wall 11, methods such as attaching a ready-made partition wall to the pipe 10, or constructing the partition wall with concrete or the like after pushing the pipe 10 are taken. , in any case, the installation of the pipe 10,
The work of providing the partition wall 11 is a separate work, which increases the amount of labor and materials involved, making the construction work complicated. Furthermore, when flowing fluid, the resistance is greater than that with a circular cross section.

Furthermore, Fig. 12 (T) shows an example of two ready-made rectangular pipes, but when such a pipe 12 is to be propelled, it is difficult to excavate it with a rotary cutter because the cross-sectional shape is not circular. However, there are restrictions such as manual excavation methods or special propulsion equipment.

Furthermore, when a rectangular cross section is used as a waterway, there is a problem that if the flow rate in the pipe is lower than that of a circular cross section, a constant flow rate cannot be ensured.

Furthermore, because it was necessary to ensure a cross section that could withstand the bending moment caused by the bending force and water pressure, it was necessary to increase the thickness of the members or increase the amount of reinforcing bars.

The present invention was proposed in view of the above, and aims to eliminate the need for installing partition walls, have good water-stopping properties, enable excavation with a rotary cutter, and be stronger than those with a rectangular cross section. is to provide an excellent multi-body propulsion tube.

(Means for Solving the Problems) The present invention provides a method in which the cross section of the tube has a cocoon shape, a daruma shape, an oval shape, or another shape in which a plurality of circles are joined, and the interior of the tube is divided into a plurality of chambers. The above objective is achieved by integrally molding the partition wall with the outer periphery of the tube.

(Function) Since the cross section of the multi-body propulsion tube of the present invention has a shape in which a plurality of circles are joined together, such as a cocoon shape, it is possible to excavate with a rotary cutter, and the partition wall can be cut in advance at the manufacturing stage. Since it is integrally molded with the outer shell, there is no need to separately provide a partition wall afterwards, and it also has good water-stop properties and strength.

In addition, due to its cross-sectional shape, it is superior in strength to those with a rectangular cross-section.

(Embodiment) FIGS. 1 to 11 (A) to (T) show embodiments of the present invention, which will be described below with reference to the drawings.

1 and 2 are cross-sectional views of embodiments according to the invention. In the figure, T is a pipe made of concrete, for example, and the outer periphery is in the shape of a cocoon or a shape in which a plurality of circles are joined. Reference numeral 2 denotes a partition wall that divides the inside of the tube T into a plurality of semicircular chambers, for example, and is integrally molded with the outer circumference of the tube T. Reference numeral 3 denotes holes formed in the pipe T, which are formed at appropriate positions and at appropriate intervals, and are used to inject lubricant or the like from the inside of the pipe to the outside in a propulsion method or the like.

3 and 4 show the collar used for the tube T. In the figure, 7 is a collar body having substantially the same shape as the tube T, and 5 is a web. Further, 5a is a part of the web 5, which is a part that comes into contact with the partition wall 2 of the tube T mentioned above.

The fifth and sixth sections show a rubber ring used for the tube T together with the collar 7. In the figure, it is a rubber ring, and 6a is a part of the rubber ring that is adhered to the partition wall 2 of the tube T mentioned above. As shown in this figure, if the circular arc part of the rubber ring and the part 6a that is in close contact with the partition wall 2 are integrally molded, the watertightness between the inside and the outside of the pipe T or between the inside and the inside will be improved. However, it is very preferable when the pipe T is used in a waterway or the like.

Moreover, FIG. 7 is an external view showing a state in which a rubber ring π is attached to the tube T.

Moreover, FIGS. 8 and 9 show a joint portion of a pipe using the collar 5 and the rubber ring.

FIG. 8 shows the joint of the arc portion of the tube T, and FIG. 9 shows the joint of the partition wall 2. However,
In the figure, 7 is a groove provided at the end of the inner peripheral part of the pipe T, and by pouring mortar etc. into this groove 7,
The watertightness between the inside and the outside of the pipe T or between the inside and the inside can be improved.

Furthermore, as shown in FIG. 10, it is also possible to embed the collar in the tube T in advance.

A tunnel constructed using the pipe T as described above can be used for the following purposes.

An example will be explained with reference to FIG.

The inside of the tunnel built by the pipe T is divided into two rooms via the partition wall 2, and there are two tunnels, so for example, the tunnel on the left side of the partition wall 2 can be used as a wastewater pipe, and the right side can be used as a rainwater pipe. can be used. Alternatively, it is also possible to use the left side as a tunnel for power cables and the right side as a tunnel for communication cables.

In this case, the left and right tunnels are completely blocked by the partition wall 2, so that even if a fire occurs in the power cable, for example, the fire can be prevented from spreading to the communication cable.

Also, when using this tunnel as a siphon pipe for crossing a river, the left side is usually used as a waterway, and the right side is kept as a backup tunnel.If sediment accumulates in the left tunnel, the right side spare tunnel is used. It is possible to clean the sediment in the tunnel on the left by running water or the like.

In the illustrated example above, the tube T is horizontal, but it goes without saying that it may also be vertical.

Further, as shown in FIG. 11(A), it is also possible to provide an appropriate number of partition walls 2 inside the tube T, and divide the inside of the tube T into an appropriate number.

Furthermore, as shown in FIG. 11(A), the screen can be shaped like a combination of circles of different sizes or diameters, a daruma shape, or an oval shape.

Furthermore, as shown in FIG. 11, the tube T may have a shape in which, for example, three circles are joined together.

In addition, in the above example, concrete pipes are explained, but other than concrete pipes, ductile pipes, steel pipes,
Of course, a fiber-reinforced pipe or the like may also be used.

(Effects of the Invention) According to the present invention configured as described above, a partition wall that divides the inside of the pipe into a plurality of chambers is provided, and this partition wall is integrally molded with the pipe, so that the pipe body can After the pipe is installed, there is no need to separately install partition walls, and there is also the effect of improving the water-tightness between each room in the pipe.

In addition, since the pipe is cocoon-shaped, oval, or a combination of multiple circles, it is possible to excavate with a rotary cutter or a combination of these, and the excavation method can be carried out by hand or with a special excavator. There are no limitations.

Furthermore, since it has partition walls from the beginning and has a cocoon-like shape, it is also excellent in strength.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view of an embodiment of the invention, and B in FIG.
-B line sectional view, Figure 2 is the A-A line sectional view in Figure 1,
4 and 4 show the collar applied to the tube according to the present invention, FIG. 3 is a sectional view taken along line DD in FIG. 4, FIG. 4 is a sectional view taken along line DD in FIG. 3, and FIGS. 6 shows a rubber ring main body applied to the present invention, FIG. 5 is a front view thereof, FIG. 6 is a side view, and FIG. 7 is a perspective view showing the state in which the rubber ring main body is attached to a pipe. Figure 8 shows a partial sectional view of the tube of the present invention in which a collar rubber ring is assembled, and Figure 5 is a middle E.
- The state as seen from the arrow line E, Figure 9 is a partial cross-sectional view of the same as above, F-F
10 is a partial sectional view of a tube in which a collar is embedded in advance, and FIGS. 11(a) to 11(a) show other application examples of the present invention, and FIGS. 12(a) to ((a)) 1) is a conventional example. T...tube, 2...partition, 3...hole, τ...collar body, tail...web, and...rubber ring, 7...groove,
τ...Color Figure 1) Funeral Figure 1) ^-One Funeral Figure (A) (B)

Claims (1)

[Claims] The cross section of the tube is cocoon-shaped, daruma-shaped, oval, or other shapes in which multiple circles are joined, and the partition wall that divides the interior of the tube into multiple chambers is integrally molded with the outer periphery of the tube. A long body propulsion tube characterized by: