JP3436715B2 - Guide wall construction method and device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide wall construction method and apparatus for a tube burial method.

[0002]

2. Description of the Related Art In recent years, when a pipe body such as a sewer pipe is sunk and buried in a slot, a plurality of pipes are inserted instead of the so-called excavation method in which the pipes are sunk into the slot and connected. The method of submerging the group of pipes in a submerged ditch filled with a stabilizing solution and connecting them to each other or to a manhole is widely used to minimize the suspension of traffic particularly in a city.

The outline of the burial method by the stable liquid excavation will be explained. First, as shown in FIG. 1, guide walls 1, 1 are constructed at the burial position of the pipe P and both sides of the human hole M, M. . This guide wall serves as a support surface for an excavating device such as a power shovel, a hoisting device such as a crane, and a suspension supporting member such as an erection member, which will be described later. Next, although not shown in the drawings, a predetermined distance from the starting end side human hole M between the guide walls 1 and 1, for example, to the next human hole M is buried by filling a stabilizing solution B such as bentonite muddy water with a power shovel or the like. While excavating the groove D,
At least the starting point of this buried groove D is a human hole 2 in the human hole portion M.
To lay down.

On the other hand, on the ground, as shown in FIGS. 2 and 3, a plurality of pipes P, P, ... Are provided with upper support members 3 and H such as channel steel for the purpose of reinforcement and increase in gravity. A lower support member 4 such as a shaped steel is applied, and this is also wrapped around the pipe P with a wire 5 or the like to be integrated. A plurality of couplers 6 are fixed to the upper surface of the upper support member 3 of the integrated connecting pipe PU at intervals in the longitudinal direction.
Position monitoring and hanging support gebin rod (screw steel rod)
Screw 7 together.

After such setup is completed, for example, the portal crane scaffold 8 assembled as a structure is used as a support, and the connecting pipe PU is connected via the wire 5 wound around the connecting pipe PU by the chain block 9A. Is suspended and supported, and the support by the chain 9B is sequentially lowered, and is suspended and lowered to the position where the human hole 2 should be connected. This sinking completion state is shown in FIG. Thereafter, as shown in FIG. 4, the erection member 20 erected between the guide walls 1 and 1 and the suspension supporting gebin rod 7 are connected by the nut 21 to suspend and support the connection pipe body PU.

Next, it is determined whether or not the connecting pipe body PU is suspended and supported at the design position (position in the depth direction and position in the groove width direction), and the gebin rod 7 protruding from the stable liquid surface and a predetermined portion of the pipe body. It is confirmed by the position of Uuki F (not shown) connected via a connecting thread. If the sunk position of the pipe is misaligned, H-shaped steel is built on the side of the sunk pipe and pressed against the side of the pipe to move it in the groove width direction to adjust the sunk position. .

After that, a solidifying material such as cement milk is injected into the stabilizing solution B in the submerged groove D, and air stirring is performed to solidify the stabilizing solution B. After the completion of the solidification and the curing period of about one week, the worker infiltrates into the manhole 2, and the solidified mud portion is dug into the manhole 2 and the pipe P as shown in FIG. The short pipe P ′ for connection is inserted from the inside of the human hole 2 into this through passage, and the space around the short pipe P ′ is filled with mortar to stop water.

In the conventional tube burial method, in order to construct a guide wall, prior to excavation of the burial groove, the guide wall structuring portions on both sides thereof are excavated, and a desired cross-sectional shape, for example, shown in FIG. 19 (A). As shown in FIG. 2B, concrete 1 is formed in the casting grooves 100, 100 having a hook-shaped cross section.
A guide wall was constructed by placing 01 and 101.

[0009]

However, such a conventional method is basically based on the in-place pouring of concrete, and is suitable for sprinkling concrete at the time of pouring or leveling the surface of sprinkled concrete. However, there was a problem that it was very troublesome.

Therefore, a main object of the present invention is to reduce the labor required for constructing the guide wall and to speed up and facilitate the construction work.

[0011]

In the present invention which has solved the above-mentioned problems, the invention according to claim 1 is such that at least the tubular body burying position of the portion to be constructed of the guide wall is along the side surface.
A groove is formed and a guide wall construction pair for this groove is formed.
The solidification material is injected from the side surface of the elephant part to solidify it, and this solidification
This is a guide wall construction method in a pipe burial method, characterized in that a portion is formed as a guide wall.

According to the second aspect of the present invention, there is provided a method of constructing guide walls used for laying and laying a pipe body on a paved road on both sides of a pipe burial position. A groove is formed along the side surface of the body where the body is sunk, and a portion of the groove is exposed on the side surface of the guide wall. A method of constructing a guide wall in a pipe burial method, characterized in that a roadbed layer and a layer above it are used as a guide wall.

According to a third aspect of the present invention, there is provided a cutter device having a cutter blade, and an injection for inserting a consolidating material into a groove formed by the cutter blade of the cutter device and at the same time to the side wall of the cutting groove. An apparatus for constructing a guide wall in a pipe body burying method, comprising a pipe and a solidifying agent supply means for supplying a solidifying material through the injection pipe.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to an example of construction of a guide wall on a paved road. <First Embodiment> FIG. 6 shows a guide wall construction device example 1 suitable for paved roads.
0 is shown. This device example 10 has a disk-shaped cutter blade 1
For the known asphalt cutter 11 having 1C, the cutting groove 3 is provided behind the cutter blade 11C in the traveling direction.
The injection pipe 12 to be inserted into 0 is attached.

More specifically, the injection pipe 1 shown in the figure is used.
As shown in FIG. 8, 2 has a shape in which the front end side portion 12T is bent at a right angle to the base end side portion 12P along the horizontal direction. A plurality of injection ports 12a, 12 are formed on the side surface of the guide wall construction target site 40 at intervals in the longitudinal direction.
a (or even one) is formed and is rotatably attached to the bottom surface of the asphalt cutter 11 at the base end side portion 12P. Further, the base end of the injection pipe 12 is connected to a solidifying material tank 16 via a swivel 13, a supply pipe 14 and a solidifying material supply pump 15 in this order, as shown in FIG. 7, for example. Although not shown, the supply pipe 14, the solidifying material supply pump 15, and the tank 16 can be attached to the asphalt cutter 11 to be integrated, or can be provided separately.

Characteristically, the injection tube 12 has a proximal portion 12
At P, it is rotatably attached to the bottom surface of the asphalt cutter 11, and since the base end is connected to the supply pipe 14 via the swivel 13, the injection pipe 12 is rotated around the rotation axis of the swivel 13. By doing so, the front end side portion 12T can be inserted into the groove 30 from the outside of the groove 30 or, conversely, can be retracted from the inside of the groove 30 to the outside of the groove 30.

On the other hand, when constructing the guide wall,
While rotating the disk-shaped cutter blade 11C of the building device 10, the disk-shaped cutter blade 11C is moved at least in the roadbed layer R along the side surface 42 where the tubular body sunk position of the construction target site 40 of the guide wall is located. As described above, the cutting device is cut and inserted to a depth reaching the lower end of the roadbed layer R, and in this state, the building device 10 is advanced in the longitudinal direction of the guide wall construction target site 40, and the guide wall construction target site 40
While the tube body sunk position forms a groove extending in the longitudinal direction along the side surface 42, at a position rearward of the cutter blade 11C, as shown in FIG. Through the pipe 12 and the injection ports 12a, 12a, ..., A solid material is injected from the exposed surface 42a into the roadbed layer R where the guide wall construction target portion of the cutting groove 30 is exposed on the side surface 42. At this time, the roadbed layer R is sandwiched between the upper layer S and the blocking layer r of the roadbed G, and since it itself contains crushed stones, gravel, etc. and is highly liquid-permeable, most of the injected solidification material is the roadbed layer R. Penetrates inside and is retained. Thus, as shown in FIG. 9, at least the roadbed layer R is solidified and integrated with the upper layer by the injected solidifying material, and the solidified body Z and the upper layer S thereof become the guide walls 1, 1. Note that FIG.
After consolidation, the tube body burial position 4 between the guide walls 1 and 1
1 shows a state in which a buried trench D is formed by excavating No. 1 including removal of pavement.

<Second Embodiment> As a second embodiment, a disc-shaped cutter blade having a guide wall construction and a plurality of injection ports provided on the side surface is attached to the above-mentioned asphalt cutter to form an injection groove and perform injection. It is also proposed that the steps are performed almost simultaneously. As a specific example of such a disc-shaped cutter blade with an injection port, a first example 50 shown in FIG.
And a second example 60 shown in FIG. 11 is proposed. First example 50
Is based on a basic structure in which a ring-shaped cutting blade 52 having a width equal to or larger than the width of the supporting portion is fixedly provided on the outer peripheral surface of a disk-shaped supporting portion 51 that is coaxially fixed to the tip of the supporting shaft 53. An injection pipe that passes through 53 to reach the center of the disk-shaped support portion 51, and radially extends from the center of the support portion 51 to open outward at the peripheral edge of the outer side surface of the support portion 51. The path 54 is formed. Therefore, the injection port 54a rotates coaxially with the rotation of the cutter blade 50, and injection can be performed while continuously changing its height position. Thus, immediately after the cutting groove 30 is formed by the cutter blade 50, the solidifying material can be injected into the injection surface 42 from the injection port 54a almost at the same time. In order to perform reliable injection, the number of injection ports and their intervals are determined so that at least one injection port 54a is always in the cutting groove 30.

In the second example 60, a ring-shaped cutting blade 62 having a width wider than the width of the support portion is fixedly provided on the outer peripheral surface of a disk-shaped support portion 61 coaxially fixed to the tip end portion of the support shaft 63. Based on the basic structure, a through hole 65 coaxial with the rotation axis of the support shaft 63 and the disk-shaped support portion 61 is provided in the center portion of the support shaft 63, and the distal end side portion 64a is longitudinally spaced within the through hole 65. , The base end ring portion 64b of the bending tube 64 having a plurality of injection ports 64c, 64c ... Is inserted with play, and the supporting portion outer side portion 64a of the bending tube 64 is inserted into the outer side surface 61a of the disc-shaped supporting portion. The bent pipe 64 is housed in the recess 60U composed of the inner peripheral surface 62a of the blade and the outer peripheral surface 62a of the blade portion, and at least the portion where the injection ports 64c, 64c ... Fixed to a dolly not shown It is intended. Thus, also in the second example, the cutting groove 30 can be formed by the cutter blade 60 and the solidifying material can be injected into the injection surface 42 from the injection port 64c. Further, in the second example, the injection pipe 64 is not rotated. The cutting blade 62 is held in a predetermined injection posture while
Only can be rotated. On the other hand, in the above-mentioned first example, the respective inlets 54a, 54a rotate coaxially with the rotation of the cutter blade 50, and thus the inlets and outlets to and from the cutting groove 30 are alternately repeated. Inlet 54
If the solidifying material is constantly injected from a and 54a, the solidifying material will be scattered out of the groove 30.

In these examples, the same points as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

<Third Embodiment> As a third embodiment, as shown in FIGS. 12 and 13, a device in which a chain cutter attachment 72 having a chain cutter 76 with a binder injection port is mounted on a carriage 71. Also suggest.

In more detail, the chain cutter attachment 72 of the illustrated example has a leader 74 attached to the front part of the crawler type carriage 71 in a posture along the vertical direction, and a support base 7 movable in the vertical direction by the leader 74.
5 and a chain cutter 76 with a solid material injection port, which is attached to the support base 75 so as to be up and down.

The leader 74 includes a pair of sprockets 74A and 74B arranged side by side in the vertical direction and an endless chain 74C wound between the sprockets 74A and 74B. ) A leader drive source 74D that rotationally drives the sprocket 74A, and a support base 75 is connected to the front side portion of this endless chain 74C. The support base 75 includes a pair of left and right guide rails 71 provided in the front portion of the carriage and extending in the vertical direction.
The guide rail 7 is engaged between A and 71B.
It is movable only in the vertical direction along 1A and 71B. A bearing portion 75A for connecting the chain cutter is formed on the upper front surface of the support base 75 so as to project therefrom.

On the other hand, in the chain cutter 76, as shown in FIG. 14, sprockets 76B and 76C are attached to the upper and lower ends of the vertically long support 76A, respectively, and the cutting blades 76d and 7D are provided on the outer peripheral surface between these sprockets 76B and 76C.
An endless chain 76D with a cutting blade having 6d is wound around, and a vertically long support body 76A is supported by a case cover 76E surrounding the upper portion thereof.
On the outer side of E, a cutter drive source 76K that rotationally drives one (upper in the illustrated example) sprocket 76B is attached to integrate them, while the lower end portion of the vertically long support 76A is vertically spaced. A plurality of inlets 76F,
76F is formed, and these inlets 76F and 76F are connected to a solid material supply means (not shown) via a supply path 76G passing through the inside of the support 76A.

[0025] The chain cutter 76 with such a binder injection port
In the first bearing portion 76H provided on the upper rear surface of the case cover 76E, the first bearing portion 76H is coupled to the second bearing portion 75A provided on the front surface of the support base 75 coupled to the reader 74 via the first rotating shaft 77A. , The first rotating shaft 77A
It is possible to undulate around. Also, the case cover 76
A tip 78A of the undulating jack 78 is provided on a third bearing portion 76J provided below the first bearing portion 76H on the upper back surface of E, at a portion of the front surface of the support base 75 below the second bearing portion 75A. A base end portion 78B of the undulating jack 78 is rotatably connected to each other via a second rotating shaft 77B and a third rotating shaft 77C.

Thus, when the leader driving source 74D is operated to drive the endless chain 74C, the chain cutter 76 can be raised or lowered via the support base 75 accordingly, and the hoisting jack 78 can be expanded and contracted. The angle of the chain cutter 76 (centering on the first rotation shaft 77A) can be adjusted by the operation. In addition to the movement of the dolly 71, the driving / raising / lowering / up / down movement of the chain cutter 76, the solidifying material injection control from the injection ports 76F and 76F is performed remotely by a worker at a position remote from the dolly 71 by wireless or wire. Do what you can do by operation,
From the driver's seat 71C of the truck 71, it is preferable that only the traveling operation of the truck can be performed.

Further, in the illustrated example, the cover 80 surrounding the cutting mouth of the chain cutter 76 is provided with the carriage 7 in order to prevent the cutting material or the injected solidified material from being scattered from the cutting mouth during cutting and pouring.
1 It is provided in the front part. This cover 80 basically moves up and down as the cutter moves up and down, but when the cutter 76 descends, it stops descending when it comes into contact with the cutting surface (in this case, the paved surface), and only the cutter 76 descends further. Is configured to. On the other hand, the construction of the guide wall can be performed as follows, for example. First of all,
As shown in FIG. 5, the carriage 71 is arranged so that the outer cut surface of the chain cutter 76 is along the side surface of the tubular body sunk position of the construction target site of the guide wall. During such a large movement of the truck, the chain cutter 76 is in a retracted state in which it is separated from the pavement surface to some extent. In the illustrated example, the undulating cylinder 7
The position of 8 is oriented around the first rotation shaft 77A in the 4 o'clock direction, and is raised to the upper limit by the reader 74.

After the completion of such setup, as shown in FIG. 16, a worker 90 at a position distant from the carriage 71 operates the chain cutter 76 for cutting operation and lowers it by remote control, and inserts it to a predetermined depth. To do. Thereafter, while maintaining this posture and height position, the worker 90 at a position also separated from the dolly 71 is remotely operated, and as shown in FIG. The solidifying material is injected from the injection ports 76F, 76F facing the roadbed layer R exposed to the outside through the exposed surface, and the carriage 71 is gradually retracted while continuing the injection. Thus, immediately after the injection groove 30 is formed by the chain cutter 76, the injection ports 76F, 76 are almost simultaneously formed.
Injection from F is performed, and a guide wall is constructed in the same manner as the above example.

As the chain cutter in the third embodiment, in addition to the chain manipulating form as shown in the above-described example, a form in which an endless chain is driven by an elliptical or perfect circle or various polygonal orbits such as quadrangle. Can also be adopted. In addition, the chain cutter attachment 72 of the above example
Can be mounted on a hand truck as in the first embodiment. Further, instead of providing the injection port 76F in the chain cutter 72, it is also possible to adopt an injection form in which the injection pipe is exposed in the groove behind the cutter in the advancing direction as in the first embodiment.

<Advantages> As can be easily understood from these embodiments, the present invention has the following advantages as compared with conventional in-situ casting of concrete. (A) In the present invention, since the solidifying material is simply injected into the guide wall construction target site such as the roadbed layer, it is not necessary to level the surface. Therefore, compared with the conventional example, the present invention requires less labor and can be performed quickly and easily.

(B) Comparing the construction work of the construction groove and the construction work by sprinkling concrete with the construction work and the construction work of the injection groove of the present invention, the present invention requires less labor and is quick and easy. Can be done.

(C) In particular, when the apparatus of the present invention is used as in the above example, the work of constructing the injection groove (the work of cutting the pavement surface along the edge of the submerged position) and the work of injection can be performed at the same time. Can be significantly reduced, and the work can be significantly speeded up and facilitated.

<Others> (a) The method and apparatus of the present invention can be applied regardless of the type of paved road. Although not shown, for example, on a roadbed (embankment or ground) including a barrier layer as an upper layer, a roadbed layer consisting of a lower roadbed and an upper roadbed is laminated, and as an upper layer thereon, a prime coat layer in order from the bottom, In addition to asphalt concrete pavement with a structure in which a base layer, tack coat layer and surface layer are laminated, in place of the upper layer in this asphalt concrete pavement, cement concrete pavement with asphalt emulsion or roadbed paper and cement concrete surface layer, asphalt concrete pavement, base layer Also, it can be applied to simple pavement without the tuck coat layer.

The present invention can also be applied when constructing a guide wall on an unpaved road.

(B) The method of the present invention can be carried out without using the construction apparatus of the present invention. For example, as shown in FIG. 18, while the excavation device BH such as a backhoe excavates the submerged groove D, the wall construction target site 40 on both sides of the submerged groove D is located at a position behind the backhoe BH in the excavation proceeding direction.
In addition, for example, as shown in the figure, while the injection pipe 12 is moved along the side surface 43 of the site, a solidifying material is injected and solidified (Z represents a solidified body) to form a guide wall,
Although not shown, prior to excavation of the submerged groove, the injection pipe is penetrated without forming cutting grooves in the guide wall construction target parts on both sides of the submerged groove, and the solidification material is inserted into the construction target part through this injection pipe. Injection and solidification are also included in the present invention.

(C) The guide wall construction device of the first embodiment is based on an asphalt cutter having a disc-shaped cutter blade, but may be based on another type of paved road cutter. Although not shown, the cutter device and the injection pipe may be separately provided, for example, the injection pipe may be mounted on a dedicated carriage and the injection pipe carriage may be moved subsequently to the cutter device to perform the injection work. .

(D) As the solidifying material, known materials such as cement-based hardening material and water glass-based hardening material can be used.

[0038]

As described above, according to the present invention, the labor required for constructing the guide wall is reduced, and the construction work can be speeded up and facilitated.

[Brief description of drawings]

FIG. 1 is a plan view showing the construction of a conventional guide wall and the excavation form of a trench.

FIG. 2 is a vertical cross-sectional view showing a conventional tube body hanging process.

FIG. 3 is a vertical cross-sectional view showing a conventional tube body hanging process from another direction.

FIG. 4 is a vertical cross-sectional view showing a suspension support state in a solidifying material adding / mixing step.

FIG. 5 is a vertical cross-sectional view showing a conventional process for connecting a human hole and a tubular body.

FIG. 6 is a perspective view showing the first embodiment of the present invention.

FIG. 7 is a system diagram of the device of the present invention.

8 is a vertical cross-sectional view showing a main part of FIG.

FIG. 9 is a vertical cross-sectional view showing a main part after completion of construction.

FIG. 10 is a longitudinal sectional view of a main part showing a first example of the second embodiment.

FIG. 11 is a longitudinal sectional view of an essential part showing a second example of the second embodiment.

FIG. 12 is a side view showing the device of the third embodiment.

FIG. 13 is a top view showing the device of the third embodiment.

FIG. 14 is an enlarged view of a main part of FIG.

FIG. 15 is a side view showing a bogie arrangement step.

FIG. 16 is a side view showing a cutter lowering step.

FIG. 17 is a side view showing the steps of cutting the injection groove and injecting the solidifying material.

FIG. 18 is a vertical sectional view showing another example.

FIG. 19 is a vertical sectional view showing a conventional example.

[Explanation of symbols]

1 ... Guide wall, 10 ... Guide wall construction device,
11 ... Asphalt cutter, 11a ... Cutter blade, 1
2 ... Injection pipe, 40 ... Guide wall construction target site, 41
... Burial position, Z ... Solid body, D ... Burial groove, R ... Roadbed layer, S
… Upper layer.

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E03F 3/06 F16L 1/00

Claims (3)

(57) [Claims] 1. A method of constructing guide walls used for laying and laying a pipe body on both sides of a pipe body burying position , wherein at least the pipe body burying position of the guide wall construction target site.
Form a groove along the side surface of the table, and
Dowel construction target site
A method of constructing a guide wall in a pipe burial method, which comprises tying the sections together to form a guide wall. 2. A method for constructing guide walls used for laying a pipe body on a paved road on both sides of the pipe burial position, wherein at least the side face of the guide wall where the pipe burial position is located is a side surface. Along with forming a groove along with, the guide wall construction target part of this groove is injected and solidified by injecting a solidifying material from the exposed surface into at least the roadbed layer exposed on the side surface of the groove,
A method of constructing a guide wall in a pipe burial method, characterized in that the solidified roadbed layer and its upper layer serve as a guide wall. 3. A cutter device having a cutter blade, an injection pipe which is inserted into a groove formed by the cutter blade of the cutter device and which injects a solidifying material into a side wall of the cutting groove, and the injection pipe. A guide wall construction device in a pipe burial method, comprising a solidifying agent supply means for supplying a solidifying material through the pipe.