JP3402437B2 - Burial method of pipe - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for burying a pipe body when a sewer pipe or the like is sunk while stabilizing the ground by using muddy water.

[0002]

Conventionally, when laying sewer pipes, etc., there are roughly divided into open cutting method, pipe propulsion method, shield method, etc., but these are used for narrow roads or soft ground. Need to adopt auxiliary construction methods such as water stoppage and earth retaining to prevent the impact on neighboring houses, and these auxiliary construction methods are heavy and not economical.

Therefore, in recent years, a laying method of a submersion method by a mud solidification method, which is typified by the so-called "plus method", has rapidly spread. That is, the submerged route is excavated from the ground with a power shovel while supplying a stable liquid such as baitite muddy water, and then the pipe is removed by a crane or the like .
It is suspended and sunk, and then cement milk is added to the stabilizing solution to solidify the stabilizing solution and the tube body is buried.

In this case, since the length of the pipe used is limited, (1) a method in which the pipe and the human hole are submerged in a stabilizing solution and sequentially connected in the solidified ground, (2) above ground In, there is a method of burying and solidifying after connecting a plurality of pipes or pipes and human holes.

[0005]

However, the above (1)
In the case of connecting the pipe and the human hole in the above method, in practice, first, the human hole is first submerged and solidified, then the pipe to be connected to this is submerged and solidified, and then the human hole is submerged. There is a method in which a worker enters the section from the ground, digs a raccoon in the direction of the pipe, penetrates the pipe, inserts a short pipe for connection in the connection part, fills the mortar in the gap around it, and stops water. Has been taken. Thus, the method of (1) is that Yosu <br/> very much labor. Other hand, when it is considered that coupling in Soil and solidified by沈埋in stabilizing liquid tube mutually, when the diameter of the tube is small it is difficult to penetrate worker dare extra It is necessary to bury a large human hole.

In this respect, the latter method (2) is
Since the connection is made on the ground, it is possible to take sufficient measures against water leakage, and there is an advantage that the burden on one worker is extremely small. However, it is necessary to prepare a large number of gate-type cranes to be installed along the submerged route, and at the time of submergence, a large number of workers must carefully perform the submerged work while ensuring the level, and the span of the construction Since it will be long, it is necessary to cut off traffic for long distances.

Therefore, it is desirable to connect the pipe body, which has already been sunk, to the whole pipe body.

As a method of connecting this type of tubular body, Japanese Patent Laid-Open Nos. 54-104603 and 54-104605,
Although Japanese Patent Publication No. 61-20754 is proposed, it relates to a connection system, not a specific connection device.

A device relating to the tube connecting device itself is described in JP-A-61-45185. However, connecting using this suction force requires delicate work on the ground,
The improvement was desired.

On the other hand, the applicant of the present invention previously disclosed in Japanese Unexamined Patent Publication No. 8-320.
A connection device described in Japanese Patent No. 089 was proposed. This connection device is intended to achieve a connection in which adjacent pipes are held by corresponding packers and the distance between them is reduced by a cylinder.

However, when collecting this connection device,
Although it is possible to recover by pulling the recovery rope connected to this to the ground, if the tube is long or foreign matter remains in the tube, it may be caught by these and cannot be recovered. Further, the apparatus itself becomes expensive, and there is a drawback that the period of repeated use is short due to adhesion of stabilizing liquid and cement components.

[0012] Therefore, a main object of the present invention is to obtain a device which can be reliably collected and has a simple device configuration.

[0013]

The invention according to claim 1 of the present invention which has solved the above-mentioned problems, when connecting the first pipe body and the second pipe body to the outer surface of the end portion of the first pipe body. A fixed base that is removably installed in the excavation groove from the ground, a cylinder fixed to the fixed base, and a cylinder rod that is integral with and is substantially orthogonal to the axis of the first tubular body. A method for burying a pipe is characterized in that the following steps are sequentially performed by using a connector main body having a first guide member in a position and a connecting means for connecting to the ground. (1) A second state in which a detachable second guide member is fixed to the outer surface of the corresponding end portion of the second tubular body so as to extend substantially to the ground side substantially orthogonal to the axis thereof. The pipe body is sunk in the excavation groove along the buried line filled with ground stabilization mud, and (2) the first pipe body to which the main body of the connection machine is fixed in advance is connected to the second pipe body from the ground. It is sunk in the excavation trench
At this time, while maintaining the fitted state of the first guide member and the second guide member, it is relatively sunk along the second guide member, (3) the first guide member and the second guide member With the connection by fitting and the first pipe body being sunk at a predetermined position, the cylinder is operated to move the first pipe body to the second pipe body side so that their ends are mutually connected. (4) The second guide member is removed from the second pipe body, the fixed base is detached from the first pipe body, and the main body of the connection machine is collected on the ground via the connecting means.

According to a second aspect of the present invention, when connecting the first pipe body and the second pipe body, the first pipe body is detachably provided to the outer surface of the end portion of the first pipe body and is set in the excavation groove from the ground. Fixed base, a cylinder fixed to the fixed base, a first guide member that is integrated with the cylinder rod and is located at a position substantially orthogonal to the axis of the first tubular body, and means for connecting to the ground. The method for burying a pipe is characterized in that the following steps are sequentially performed by using a connector main body having (1) A second state in which a detachable second guide member is fixed to the outer surface of the corresponding end portion of the second tubular body so as to extend substantially to the ground side substantially orthogonal to the axis thereof. The pipe is submerged in the excavation groove along the buried line filled with the ground stabilization mud, and the locking box having the guide hole along the height direction at the position corresponding to the second guide member is provided in the guide hole. And the second guide member are fitted to each other to be submerged in the muddy water, (2) solidify the muddy water, and (3) supply the muddy water for ground stabilization to the next excavation groove with the rocking box as a boundary. While excavating, (4) removing the locking box, (5) submerging the first pipe body to which the connector body has been fixed in advance into the excavation groove from the ground, and at this time, the first guide member and the second guide member. While maintaining the fitting state with the guide member, (6) The first guide member and the second guide member are connected by fitting, and the first pipe is sunk at a predetermined position to operate the cylinder, The first pipe body is moved to the second pipe body side and their ends are joined to each other. (7) The second guide member is removed from the second pipe body, and the fixed base is detached from the first pipe body. The main body of the connecting device is collected on the ground via the connecting means.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail below with reference to the embodiments shown in the drawings.

First, the connection device according to the present invention will be described mainly with reference to FIG. 1. The guide cylinders 2 and 2 are integrated on both sides of the fixed base 1, and the slide rods 3 are attached to the guide cylinders 2 and 2. It is fitted loosely. A return hydraulic cylinder 4 is fixed between the guide cylinders 2 and 2, and a connecting plate 5 is integrated at the tip of the cylinder rod 4A. One end of the slide rods 3 is fixed to the connecting plate 5.

At the other end of the slide rods 3, 3, there is a first
The connecting cylinders 6 and 6 as guide members are integrated orthogonally to each other, and between the connecting cylinders 6 and 6, the slide rod 3,
Reinforcing members 7A, 7B and 7C are integrated between the three and between the connecting cylinder 6 and the slide rod 3.

A support base 8 is integrated with the guide tubes 2 and 2. A guide cylinder 10 is provided on the support base 8, and a joining confirmation bar 11 is provided in the guide cylinder 10, and a spring provided in the guide cylinder 10 (not shown) reinforces the guide cylinder 10 to the advance limit. It is biased to the member 7A side.
An inclined surface 11a is formed at the rear end of the joining confirmation bar 11. A limit switch 13 is fixed to a support member 12 integrated with the guide cylinder 10, and its tip is installed at a level position corresponding to the inclined surface 11a.

On the other hand, on both sides of the guide cylinders 2 and 2, a flange 9 (another not shown) having an insertion hole 9a is projected and integrated, and the fixed base 1 is located at a lower position corresponding to the flange 9. Stop seats 14 (the other side is not shown in FIG. 1) having insertion holes 14a are formed on both sides.

The pipe body is buried by using such a connecting device. Explaining this burial method, first, referring to FIG.
As shown in, the guide walls 60, 60 are constructed, and the excavation trench 61 is excavated while supplying bentonite mud S for ground stabilization between the guide walls 60, 60 by a power shovel or the like. The human hole 6 is formed at the end of the excavation groove 61 in advance or thereafter.
2 is buried.

On the other hand, on the ground, as shown in FIGS. 2 and 3, the second pipe body (preceding pipe body) 20 is prepared for sinking. That is, in the lower portion of the preceding second tubular body 20, a lower H-section steel 5 for increasing gravity against its reinforcement and buoyancy.
1, the upper channel steel 52 is arranged on the upper part, and the second tube body 20 and the wire 53 are integrated with each other. Further, couplers 54 are fixed to the upper surface of the upper channel steel 52 at intervals in the longitudinal direction.

A temporary lid 63 is provided at the opening end of the second tubular body 20 on the side of the human hole 62, and a water injection air vent 64 is provided. A water blocking lid 65 is provided at the opening at the other end (on the side of the subsequent first tubular body 30). A recovery wire 66 is connected to the water stop lid 65. Further, on the trailing side of the first tubular body 30,
As shown in FIG. 4, the guide tube 6 is provided on both sides of the upper channel steel 52.
8.68 are integrated.

Further, as shown in FIG. 6, the Gevin rods 69, 69 are screwed into the respective couplers 54, 54 ... And the second guide members 70, 70 made of, for example, steel pipes are inserted into the guide cylinders 68, 68. I'll do it.

After such setup is completed, for example, as shown in FIG.
Using the gate-type scaffolding crane 71 shown in (1), the entire second pipe body 20 is suspended by the wire 73 by the chain block 72 and submerged in the muddy water S.

The sinking at the predetermined position, that is, the level and the street being in the predetermined position, are indicated by the Gevin rods 69, 6
Check by the position of 9 ... In this case, as shown in FIG. 5, the float 90 can be used to confirm the deposition depth. After that, cement milk is injected into the muddy water S and the mixture is stirred with air to solidify the muddy water S.

Next, the above-mentioned connecting device described with reference to FIG. 1 is mounted on the ground at the end of the first pipe body 30 for connecting to the preceding second pipe body 20. This installation is
The fixing rod 75 is inserted through the insertion hole 9a of the flange 9, the nut 76 is fitted in this state, and then the insertion hole 14a of the fixing seat 14 of the fixed base 1 is passed through, as shown in detail in FIG. Then, it is carried out by screwing into the screw hole 74a formed in the overhanging portion 74 integrated with the upper channel steel 52.

On the other hand, similarly to the case of the second tubular body 20, setup such as mounting the Gevin rods 69, 69 on the respective couplers 54, 54 ... Is carried out.

On the other hand, the portion of the first pipe body 30 is excavated and filled with the muddy water S. This step may be performed after the second pipe body 20 is sunk, or the entire length of the second pipe body 20 and the first pipe body 30 may be excavated in advance.

After that, as in the case of the second tube 20 being sunk,
The first pipe body 30 is sunk in a predetermined position by using the portal scaffolding crane 71.

During this sinking, the connecting tubes 6 and 6 of the connecting device
Is sunk while being fitted onto the second guide members 70, 70. The water stop lid 65 is removed to the ground via the recovery wire 66. This completed state of deposition is shown in FIGS. 6 and 7.

Then, the hydraulic cylinder 4 is operated to extend the cylinder rod 4A. As a result, the connecting tubes 6 and 6 integrated with the slide rods 3 and 3 are in a fitted state with the second guide members 70 and 70, and the connecting device is fixed to the first tubular body 30. , Conversely, the first tubular body 30
Are moved to the second pipe body 20 side. With this move,
The end portion of the first pipe body 30 is fitted into the second pipe body 20 and is joined. A seal member 77 is provided in advance at the joint.

At the joining limit, the tip of the joining confirmation bar 11 comes into contact with the reinforcing plate 7A, and conversely the joining confirmation bar 11 is extruded rearward. Therefore, the limit switch 13 is tapped on the inclined surface 11a thereof. The signal is transmitted to the ground, and it can be confirmed that the joining is completed on the ground.

After the joining is completed, the fixing rods 75, 75 are reversely rotated and removed from the screw holes 74a formed in the overhanging portion 74, and then the nuts 76, 7
Since 6 contacts the lower surfaces of the flanges 9 and 9, if the pulling is continued, the entire connecting device can be collected on the ground.
Therefore, the connection device can be reused.

When connecting the second tubular body 20 and the first tubular body 30, a locking box 80 can be used for connection as shown in FIGS. 8 to 11. That is, this will be described. (1) As shown in FIG. 8, in the ground stabilization mud S filled in the excavation trench 61 along the buried line, as in the example of FIGS. A second guide member 70, 70 is detachably fixed to the outer surface of the corresponding end of the tubular body 20 so as to be substantially orthogonal to the axis of the tubular body 20 while extending to the ground side. 20 is submerged in the muddy water S, and a locking box 80 having guide holes 81, 81 along the height direction at positions corresponding to the second guide members 70, 70 is provided with the guide holes 81, 81 and the second guide member. 70, 70 are fitted together and are sunk in muddy water.

(2) Next, solidification of the muddy water S in the portion where the second pipe 20 is sunk is attempted.

(3) Excavate the next excavation groove with the rocking box 80 as a boundary while supplying the ground stabilization mud S.

(4) After that, the locking box 80 and the water blocking lid 65 are removed.

(5) Fix the connecting device body X in advance,
And, if necessary, the first pipe body 30 in which the human hole portion 62A is integrated with the other end portion is sunk from the ground into the excavation groove 61, and at this time, the connecting cylinders 6 and 6 as the first guide member and the second While maintaining the fitted state with the guide members 70, 70, the guide members 70, 70 are relatively sunk along the second guide members 70, 70.

(6) The cylinder 4 is operated in a state where the first guide members 6 and 6 and the second guide members 70 and 70 are connected by fitting and the first pipe body 30 is sunk in a predetermined position. Then, the first pipe body 30 is moved to the second pipe body 20 side,
Join their ends together.

(7) The second guide members 70, 70 are detached from the second tubular body 20, and the fixed base 1 is detached from the first tubular body 30 and connected via the fixing rods 75, 75 as connecting means. Collect X on the ground.

A first example of the locking box 80 used here is shown in FIGS. 10 and 11. That is, for example, a thin box-shaped box body 82 made of a steel plate
Of the second tubular body 20 is notched (the notched portion is denoted by 8
3), the guide holes 81, 81 are formed in the box body 82, and the operation wire insertion hole 8 of the water blocking lid 65 is formed.
4 is formed. Reference numeral 85 is a hanging hook. 12 and 13 show an example of the water blocking lid 65.

[0042]

As described above , according to the present invention,
There are advantages such as that the burial can be performed very smoothly.

[Brief description of drawings]

FIG. 1 is a perspective view of a connection device.

FIG. 2 is a front view of a second pipe body at a preparatory stage for sinking.

FIG. 3 is a side view of a second tube body at a sunk stage.

FIG. 4 is a perspective view of a structure of an end portion of a second tubular body.

FIG. 5 is a front view of the second tube at the completion of the deposition.

FIG. 6 is a front view of a stage before joining the first tubular body to the second tubular body.

FIG. 7 is a plan view of a stage before joining the first tubular body to the second tubular body.

FIG. 8 is a front view of a second tube at an end stage of the deposition of the example of using the locking box.

FIG. 9 is a front view of the step of sunk the first tubular body of the example using the locking box.

FIG. 10 is a side view of the locking box.

FIG. 11 is a perspective view of a locking box.

FIG. 12 is a front view of a water blocking lid.

FIG. 13 is a side view of the water blocking lid.

[Explanation of symbols]

1 ... Fixed base, 2 ... Guide tube, 3 ... Slide rod,
4 ... Cylinder, 6 ... Connection tube (first guide member), 13 ...
Limit switch, 20 ... second tube, 30 ... first tube,
61 ... Excavation groove, 68 ... Guide tube, 70 ... Second guide member, X ... Connection device.

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) F16L 1/024

Claims (2)

(57) [Claims] 1. When connecting the first tubular body and the second tubular body,
Removably provided on the outer surface of the end of the first tubular body,
A fixed base that is sunk in the excavation groove from the ground, a cylinder fixed to the fixed base, and a first guide member that is integrated with the cylinder rod and is positioned substantially orthogonal to the axis of the first tubular body. A method for burying a pipe body, which comprises sequentially performing the following steps using a main body of a connecting machine having a connecting means with a ground. (1) A second state in which a detachable second guide member is fixed to the outer surface of the corresponding end portion of the second tubular body so as to extend substantially to the ground side substantially orthogonal to the axis thereof. The pipe body is sunk in the excavation groove along the buried line filled with ground stabilization mud, and (2) the first pipe body to which the main body of the connection machine is fixed in advance is connected to the second pipe body from the ground. It is sunk in the excavation trench
At this time, while maintaining the fitted state of the first guide member and the second guide member, it is relatively sunk along the second guide member, (3) the first guide member and the second guide member With the connection by fitting and the first pipe body being sunk at a predetermined position, the cylinder is operated to move the first pipe body to the second pipe body side so that their ends are mutually connected. (4) The second guide member is removed from the second pipe body, the fixed base is detached from the first pipe body, and the main body of the connection machine is collected on the ground via the connecting means. 2. When connecting the first tubular body and the second tubular body,
Removably provided on the outer surface of the end of the first tubular body,
A fixed base that is sunk in the excavation groove from the ground, a cylinder fixed to the fixed base, and a first guide member that is integrated with the cylinder rod and is positioned substantially orthogonal to the axis of the first tubular body. A method for burying a pipe body, which comprises sequentially performing the following steps using a main body of a connecting machine having a connecting means with a ground. (1) A second state in which a detachable second guide member is fixed to the outer surface of the corresponding end portion of the second tubular body so as to extend substantially to the ground side substantially orthogonal to the axis thereof. The pipe is submerged in the excavation groove along the buried line filled with the ground stabilization mud, and the locking box having the guide hole along the height direction at the position corresponding to the second guide member is provided in the guide hole. And the second guide member are fitted to each other to be submerged in the muddy water, (2) solidify the muddy water, and (3) supply the muddy water for ground stabilization to the next excavation groove with the rocking box as a boundary. While excavating, (4) removing the locking box, (5) submerging the first pipe body to which the connector body has been fixed in advance into the excavation groove from the ground, and at this time, the first guide member and the second guide member. While maintaining the fitting state with the guide member, (6) The first guide member and the second guide member are connected by fitting, and the first pipe is sunk at a predetermined position to operate the cylinder, The first pipe body is moved to the second pipe body side and their ends are joined to each other. (7) The second guide member is removed from the second pipe body, and the fixed base is detached from the first pipe body. The main body of the connecting device is collected on the ground via the connecting means.