JPS6022106Y2 - Pipe body for pouring asphalt-based material underwater - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an underwater pouring pipe for injecting or laying a high-temperature fluid of an asphalt-based material such as asphalt mortar or sand mastic into an underwater rubble layer or the like.

Conventionally, for underwater construction of asphalt-based materials, the packet method, chute method, or steel pipe method has been adopted.

However, the packet method results in uneven finish, the chute method has a limited construction water depth, and the steel pipe method requires larger and more expensive equipment, as well as water intrusion into the pipe when construction is interrupted. In this case, when the material is reinjected, the water in the pipe turns into pressure steam due to the heat.
A so-called back-splash phenomenon occurs that blows up the material in the pipe and hopper. Therefore, in order to prevent this, asphalt with high penetration is used and is injected at a relatively low temperature, so the effect of solidifying rubble is weak. There are drawbacks such as:

In order to address the above-mentioned conventional problems, this invention proposes an underwater pouring pipe that can safely and reliably perform underwater construction of asphalt-based materials without being subject to water depth restrictions using relatively simple equipment. be.

An example of this invention shown in the drawings will be explained below.
A mounting section 3 is provided at the lower end of the steel pipe 2 of a pouring device in which a steel pipe 2 made of, for example, a double steel pipe having heat insulation properties is attached to the bottom of a mixture packet 1. A flexible hose 4 made of a material having heat resistance, heat insulation properties, and a peeling effect from asphalt-based materials is attached to the inner surface.

The hose 4 is formed of a silicone resin or fluororesin sheet in which a core material 5 of glass cloth, general cloth, etc. is embedded in one or more layers, and a steel pipe is attached to the upper part to prevent the bending phenomenon in water. In order to prevent this, a reinforcing member 6 made of, for example, metal or plastic is attached to the opening at the lower end, and an elastic clamping member 7 that can be closed by elastically clamping this part, or an elastic clamping member 7 that can be closed by a diver freely. A flow rate regulator 7 is installed that can be opened and closed.

This elastic clamping member 7 is, for example, a member in which two spring steel plates are pivotally connected to each other at both ends, and the lower end of the hose 4 is sandwiched between the spring steel plates. The lower end opening is closed to prevent water from entering the inside, and when the asphalt material 8 flows down inside the hose 4, the weight of the asphalt material 8 pushes it open to open the opening.
It is constructed so that the asphalt-based material 8 can flow out into water.

The flow rate regulator 7 is, for example, a clip type or a screw type, and can be opened and closed by a diver as necessary. When construction is interrupted, the flow rate regulator 7 closes the lower end opening of the hose 4 and prevents water from entering the interior. It is constructed so that the amount of outflow of the asphalt-based material 8 can be adjusted appropriately by a diver operating it during construction.

Asphalt-based material 8 in water in the above configuration
When pouring, asphalt material 8 is added to packet 1.
is introduced, the pouring device is moved to a predetermined position, and a flow rate control valve 9 attached to the lower end of the packet 1 is opened by remote control, thereby allowing the liquid to flow down to the hose 4 via the steel pipe 2 below.

The hose 4 is always under water pressure, and when the asphalt-based material 8 is in full flow, it becomes a perfect circle (Fig. 1b), and when the elastic clamping member 7 is attached, the asphalt-based material 8 pushes it open. Runs out into the water.

If a flow rate regulator 7 is installed, the asphalt-based material 8 will flow out into the water when the diver opens it.

When the asphalt-based material 8 finishes flowing out, the hose 4 becomes flat due to water pressure, and the elastic clamping member or flow rate regulator completely closes the lower end opening, thereby reliably preventing water from entering the inside. Can be done.

Note that when the construction is interrupted, the residual material 8' in the hose 4 cools and solidifies as shown in Figure 4a, and the hose 4 is tightly attached to the asphalt-based material while remaining flat. Since the asphalt material 8 flows down when pouring is resumed, the residual material 8' and the inner surface of the hose 4 will easily separate due to its weight, and the asphalt material 8 will not force the boundary surface between them. Underwater pouring work can be carried out smoothly by flowing down without any problem (Fig. 4 b-
d).

As described above, according to this invention, a flexible hose is attached to the lower end of a steel pipe with heat insulation properties, so the equipment can be constructed at a low cost without increasing its size.Moreover, the hose can be flattened by water pressure when construction is interrupted. Therefore, there is no water intrusion into the interior, and construction can be carried out safely without causing the so-called back-splash phenomenon.

In addition, the hose has heat resistance and heat insulation properties, so it is durable even when high-temperature asphalt materials are continuously introduced, and can prevent asphalt materials from solidifying during construction due to cooling. Because it has a peeling effect with asphalt-based materials, even if the hose is tightly bound by residual material when construction is interrupted, it will be easily peeled off when pouring resumes and the asphalt-based material flows down, allowing construction to continue safely and smoothly. Can be done.

Therefore, by using the tubular body of this invention, it is possible to continuously
Moreover, since uniform construction can be ensured, it can be applied not only to rubble consolidation, but also to underwater impermeable wall construction methods, which were impossible with conventional construction methods.

[Brief explanation of the drawing]

Figures 1 a, b, and c are front views showing the construction state of the pipe body of this invention, Figure 2 is a vertical cross-sectional view of the main part of the pipe body, and Figure 3 is a cross-sectional view taken along line A-A in Figure 2. Figure 4 a, b, c
, d are vertical cross-sectional views showing a state in which construction has resumed after being interrupted. 1...Packet, 2...Steel pipe, 3...
...Mounting part, 4...Hose, 5...
... core material, 6 ... reinforcing material, 7 ... elastic clamping member or flow rate regulator, 8 ... asphalt-based material, quantity control valve. 8'...Residual material, 9...Rakidan

Claims (6)

[Scope of utility model registration request] (1) For pouring asphalt-based materials into water, characterized in that a flexible hose whose inner surface is made of a material that is heat resistant, heat-insulating, and has a peeling effect from asphalt-based materials is attached to the lower end of a steel pipe with heat-insulating properties. tube body. (2) The pipe body for pouring asphalt-based material underwater according to claim 1, which is characterized in that a reinforcing material for preventing curling is attached to the outer surface of the steel pipe attachment part of the upper part of the hose. (3) The asphalt-based material according to claim 1 of the utility model registration, characterized in that the opening at the lower end of the hose is closed by an elastic clamping member that can be pushed open by the asphalt-based material flowing down inside. Pipe body for underwater pouring. (4) The pipe for pouring asphalt-based material underwater according to claim 1, which is characterized by being equipped with a flow rate regulator that can open and close the opening at the lower end of the hose in stages. (5) The tube for pouring asphalt-based material underwater according to claim 1, wherein the hose is made of a silicone resin sheet in which a woven fabric is embedded as a core material. (6) The tube for pouring asphalt-based material underwater according to claim 1, wherein the hose is made of a fluororesin sheet in which a woven fabric is embedded as a core material.