JP2005155680A - Underground pipe laying method and laying device used in it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an underground pipe laying method for simplifying underground pipe laying work by an open-cut method and shortening work hours. <P>SOLUTION: A light receiving device 4 is provided at a position which becomes a target construction point in a channel 20 to match an aiming point 425 of a light receiving body 420. A laser irradiation device 3 is provided on an already laid underground pipe 10 to adjust in such a way that laser beams irradiate the aiming point 425. A sand foundation 22 is formed in the channel 20. Jacks 6, 6 are provided on a light receiving device 4 side of the sand foundation 22 and on an underground pipe 10 side. A guide rail 7 is stretched between support plates 61 and 61. Adjustment is performed so that laser beams are irradiated on an aiming point 713 of a light receiving plate 710 by expanding and contracting a column support 60 of the jack 6. A loaded recessed part forming device 8 is mounted on a guide rail 7 and is moved to form a mounting recessed part 220 in the sand foundation 22. An underground pipe 11 is fitted into the mounting recessed part 220 to connect it with the underground pipe 10. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a method for laying a buried pipe and a laying device used therefor. More particularly, the present invention relates to a construction that simplifies the laying operation of the buried pipe by the open-cut method and shortens the working time. Further, the present invention relates to a structure in which the buried pipe can be arranged on the foundation so as not to roll, and the safety of laying work of the buried pipe is improved.

  When installing buried pipes such as sewage pipes at a position of 3 to 4 m underground, excavate the ground surface with a civil engineering machine such as a backhoe to form a groove, and then refill the buried pipe after installing it in the groove. It is often performed by the so-called cutting method.

In the open-cut method, the buried pipe is generally laid according to the following procedure. Here, a case where a new buried pipe is connected to a buried pipe already laid will be described.
(1) Establish a transit on the ground surface, and set a target point for laying out the laying position of the buried pipe (leading out the center of the pipe and the laying height of the pipe) on the tip side in the groove.
(2) Temporary installation will be provided at the bottom of at least two grooves on the laying target point side and the existing buried pipe side.
(3) Put sand that will be the foundation of the newly laid pipe into the groove and roll it.
(4) Put the water string between the ways.

(5) The surface of the compacted sand foundation is shaved with a scraper or the like to form a substantially flat sand foundation having a predetermined height. The surface of the sand foundation is made to have a substantially constant distance from the stretched water string.
(6) Place the buried pipe on a sand foundation with a substantially flat surface and connect it to the existing buried pipe. Drive fixed piles on both sides so that the buried pipe does not roll in the horizontal direction, and fix the fixed piles with a wire.
(7) Refill the groove.
A plurality of buried pipes are laid and connected by the above process.

However, the above-described method for laying buried pipes has the following problems.
That is, conventionally, the buried pipe has been laid by placing the buried pipe on a sand foundation formed to have a predetermined height, and the laying position is determined by the surface shape of the sand foundation. It had to be formed with high accuracy. Therefore, skill is required for formation of the sand foundation, and the time required for the work is great. In particular, when sewage pipes are laid, the flow of water may be affected, so the laying position needs to be accurate.

  Further, since the buried pipe was placed on a substantially flat sand foundation, if the buried pipe had a circular shape, it could roll in the horizontal direction, which was dangerous.

An object of the present invention is to provide a method for laying a buried pipe and a laying device used therefor, which can simplify the laying work in the open-cut method and reduce the working time.
Another object of the present invention is to provide a buried pipe laying method and a laying apparatus used therefor, which can be arranged on a foundation so that the buried pipe does not roll, and the safety of the buried pipe laying operation is improved.

The means of the present invention taken to achieve the above object are as follows.
In the first invention,
It is a method of laying buried pipes by the open-cut method,
A flowable solid is provided in the groove to form a foundation, a placement recess is formed at a predetermined position of the foundation for laying the buried pipe, and the buried pipe is placed and placed in the placement recess. And
This is a method of laying underground pipes.

In the second invention,
It is a method of laying buried pipes by the open-cut method,
Providing a flowable solid in the groove to form a foundation;
Installing a support device at a required interval and constructing a rail between the support devices;
A mounting recess forming device provided with a scraping member is attached to the rail, and the mounting recess forming device is moved along the rail to scrape the fluid solid material of the foundation, and at a predetermined position of the foundation for laying the buried pipe Forming a mounting recess;
Placing and placing the buried pipe in the placing recess,
It is characterized by having
This is a method of laying underground pipes.

In the third invention,
A laying device used when laying a buried pipe by the open-cut method,
A support device having a receiving part capable of adjusting the height;
A rail constructed between the receiving parts;
A mounting recess forming device having a scratching member;
Means for setting the height of the scratching member;
With
The mounting recess forming device moves along the rail to scrape the fluid solid constituting the foundation provided in the groove with a scraping member, and the mounting recess is located at a predetermined position of the foundation for laying the buried pipe. It is configured to be attachable to a rail so that it can be formed,
It is a laying device for buried pipes.

In the fourth invention,
A light receiving device that determines a reference point necessary to determine the laying position of the buried pipe at a position corresponding to the front side of the buried pipe to be laid,
A laser irradiation device provided so that a laser beam is irradiated toward a light receiving device from a reference point determined at a position corresponding to the base side of the buried tube;
Characterized by comprising
It is the laying apparatus of the buried pipe which concerns on 3rd invention.

In the fifth invention,
A rail that constitutes a buried pipe laying device according to a third invention,
In the state of being laid between the receiving parts, the mounting recess forming device is configured to be movable along,
It is a rail which comprises the laying apparatus of a buried pipe.

In the sixth invention,
A mounting recess forming device constituting a laying device for a buried pipe according to a third invention,
It has a scratching member and is configured to be attachable to a rail so that a mounting recess can be formed by scraping the flowable solid with a scratching member at a predetermined position of the foundation on which the buried pipe is laid. To
It is the mounting recessed part formation apparatus which comprises the laying apparatus of a buried pipe.

In the seventh invention,
A light receiving device constituting a buried pipe laying device according to a fourth invention,
It is characterized in that it is configured so that a reference point necessary for determining the laying position of the buried pipe can be determined at a location corresponding to the front side of the buried pipe to be laid,
It is the light-receiving device which comprises the laying apparatus of a buried pipe.

In the eighth invention,
A laser irradiation apparatus constituting a buried pipe laying apparatus according to a fourth invention,
It is characterized in that it is configured so that the laser beam can be irradiated toward the light receiving device from the reference point determined at the location corresponding to the base side of the buried pipe,
It is a laser irradiation apparatus which comprises the laying apparatus of a buried pipe.

In the ninth invention,
In the laying method of the buried pipe according to the first or second invention, the leveling method of the fluid solid constituting the foundation,
The leveling part provided at the tip of the handle is properly set up on the flowable solid, and a laser beam is applied to the laser receiving part provided at the required position of the handle to measure the distance from the surface of the flowable solid. Characterized by leveling a flowable solid,
It is a leveling method.

In the tenth invention,
A leveling tool used in the leveling method according to the ninth invention,
The handle portion is configured to have a leveling portion at the tip of the handle portion, and at a required position of the handle portion, a light receiving portion capable of receiving a laser beam is provided movably along the handle portion. Features
It is a leveling tool.

  The mounting recess is not particularly limited in shape as long as it can be disposed at a predetermined position where the buried pipe is placed and laid. For example, it can be formed in a substantially “U” shape, a substantially “V” shape, a substantially “凵” shape, etc.

  Examples of the “flowable solid” include, but are not limited to, sand, earth, earth and sand, gravel, stones having a small particle diameter, and the like.

(Work)
The buried pipe according to the present invention is laid in the following process.
A flowable solid is provided in the groove to form the foundation. A mounting recess is formed at a predetermined position of the foundation on which the buried pipe is laid. The buried pipe is placed and placed in the placement recess.

  A flowable solid is provided in the groove to form the foundation. Support devices are installed at a necessary interval, and rails are installed between the support devices. A mounting recess forming device provided with a scraping member is attached to the rail, and the mounting recess forming device is moved along the rail. In this way, the fluidity solid of the foundation is scraped off, and a mounting recess is formed at a predetermined position of the foundation on which the buried pipe is laid. The buried pipe is placed and placed in the placement recess.

The present invention has the above-described configuration and has the following effects.
(A) According to the present invention, the buried pipe can be laid at a predetermined position only by placing the buried pipe in the placing recess formed at the predetermined position of the foundation. Therefore, it is easy to lay the buried pipe. In addition, in the case where a rail is installed between support devices provided at a required interval, and a mounting recess forming device provided with a scraping member is attached to the rail and moved along the rail, the mounting recess can be easily formed. In this case, it is easier to lay the buried pipe. In other words, according to the present invention, it is possible to determine the laying position of the buried pipe simply by placing it in the placing recess, and it is not necessary to finish the surface of the sand foundation with high accuracy as in the prior art. It is easy and the working time can be shortened.

(B) According to the present invention, since the buried pipe is placed in the placing recess, the buried pipe can be prevented from rolling on the foundation. That is, since the buried pipe can be maintained in a stable state so as not to move just by being placed, the safety is high.

Embodiments of the present invention will be described in more detail with reference to the drawings.
FIG. 1 is an explanatory diagram for explaining a first step of a method for laying a buried pipe,
FIG. 2 is an explanatory diagram for explaining a second step of the laying method of the buried pipe,
FIG. 3 is an explanatory view showing the installation state of the laser irradiation device on the buried pipe,
FIG. 4 is an explanatory diagram for explaining a third step of the laying method of the buried pipe,
FIG. 5 is an explanatory diagram for explaining the fourth step of the laying method of the buried pipe,
FIG. 6 is an explanatory diagram for explaining the fifth step of the laying method of the buried pipe,
FIG. 7 is an explanatory view showing a laser irradiation apparatus used in the laying method of the buried pipe,
FIG. 8 is an explanatory view showing a light receiving tool used in a method of laying a buried pipe,
FIG. 9 is an explanatory view showing a ground leveling tool used in a method of laying a buried pipe,
FIG. 10 is an explanatory view showing a jack used in a method of laying a buried pipe,
FIG. 11 is an explanatory view showing a guide rail used in the laying method of the buried pipe,
FIG. 12 is an explanatory view showing a mounting recess forming device used in the laying method of the buried pipe.
Although described in detail in the column of action, in FIG. 2, FIG. 4, FIG. 5 and FIG. 6, the light receiving device 4 is located on the front side of the buried tube 11 connected to the buried tube 10 for the convenience of illustration. The state installed in the position of is shown. In actual construction, a plurality of buried pipes 11 are set on the front side of a groove where the pipes can be laid.

First, with reference to FIG. 7 thru | or FIG. 12, each apparatus used with the laying method of a buried pipe is demonstrated.
FIG. 7 shows the laser irradiation apparatus 3. The laser irradiation device 3 is for providing a reference line as a reference for laying a new buried pipe in a groove cut out from the ground surface.
The laser irradiation apparatus 3 includes a base 30 that is placed on a buried pipe or the like that has already been laid, and a laser irradiation body 31 that is provided on the base 30.

  The base 30 has a mounting plate 300 having a square shape in plan view, and is formed by providing leg members 301 and 301 at two positions with a required interval. Each leg member 301 is formed in a shape in which a plate-like body is expanded in two directions so as to have a substantially inverted “V” shape in a side view, and the base side is fixed to the back surface of the mounting plate 300, thereby These two sides are placed on the upper part of the buried pipe.

  The laser irradiation body 31 includes a fixed base 310 fixed to the upper surface of the base 30 and a case 311 provided on the upper side of the fixed base 310 so as to be rotatable in the circumferential direction with respect to the fixed base 310.

A laser irradiation unit that emits a laser beam is built in the tip of the case 311. The laser beam travels straight forward through the irradiation hole 312 provided at the tip of the case 311 by the laser irradiation unit.
On the upper surface of the case 311 on the front side, a level 313 for measuring the level is provided. The level 313 is for measuring the inclination in the left-right direction. Further, the case 311 is provided with adjusting screws 314 and 315 protruding in two places. The adjustment screw 314 adjusts the inclination of the case 311 in the vertical direction with respect to the horizontal, and the adjustment screw 315 adjusts the lateral swing angle of the case 311. Reference numeral 316 denotes a switch for irradiating a laser beam.
In addition, since the laser irradiation part, the level 313, and the inclination adjustment mechanism of the case 311 used the well-known thing, detailed description is abbreviate | omitted.

FIG. 8 shows a light receiving tool 4 which is a light receiving device. The light receiving tool 4 is installed at the position of the laying target point in the groove set by a surveying machine such as transit. The light receiving tool 4 is for determining the target of the laser beam irradiated by the laser irradiation device 3.
The light receiving tool 4 has a piercing table 40 for piercing and fixing to the bottom of the ground in the groove, a height adjusting body 41 fixed to the piercing table 40, and a target provided on the upper portion of the height adjusting body 41. A body 42 is provided.

  The piercing table 40 includes a disk-shaped fixing table 400 and is formed by fixing a base portion of a piercing pile 401. The stab piles 401 are provided at three locations at equal intervals in the circumferential direction on the edge side of the fixed base 400.

  The height adjustment body 41 has a pantograph-type jack structure in which the overall height can be adjusted in the vertical direction by turning the spiral rod 410. Reference numeral 411 denotes an engaging portion for turning the spiral rod 410. The height adjusting body 41 can change the height of the target body 42 provided on the upper portion by changing the shape by turning the spiral rod 410. Since the jack structure constituting the height adjustment body 41 is a known one, a detailed description thereof is omitted. The spiral rod 410 can also be turned by hooking a handle or the like on the engaging portion 411 at the end.

  The target body 42 includes a light receiving body 420 that receives a laser beam, and a light receiving unit adjusting body 421 that adjusts the lateral position of the light receiving body 420. A crosshair aiming point 425 is provided on the surface of the photoreceptor 420. On the front side of the light receiving unit adjusting body 421, a spiral rod 422 having a required length is rotatably supported in a state of extending in the lateral direction. The light receiving body 420 is attached to the light receiving unit adjusting body 421 via a transition body 424 that is screwed into the spiral rod 422. The light receiving body 420 is movable in the lateral direction of the light receiving portion adjusting body 421 by turning the handle 423 and moving the transition body 424 along the spiral rod 422.

FIG. 9 shows the leveling tool 5. The ground leveling tool 5 includes a ground leveling tool body 50 for leveling the sand constituting the sand foundation, and a light receiving portion 51 that receives a laser beam.
The ground leveling tool main body 50 includes a handle portion 500 having a required length and a leveling plate 501 that is a leveling portion provided at the tip of the handle portion 500.
The light receiving portion 51 is provided at a position at a required height of the handle portion 500 of the ground leveling tool main body 50 so as to be movable in the length direction of the handle portion 500. Since the leveling tool main body 50 is a known one, a detailed description thereof will be omitted.

  FIG. 10 shows a jack 6 which is a support device. The jack 6 has a support column 60 that can be expanded and contracted in the vertical direction, and is provided with a receiving plate 61 that is a receiving portion at an upper portion thereof. Reference numeral 62 denotes an engaging portion that moves the support column 60 in the vertical direction by hooking and turning the handle. Since the jack 6 is a mechanical type that can rotate the engaging portion 62 to move the support column 60 in the vertical direction, a detailed description thereof will be omitted.

FIG. 11 shows a guide rail 7 which is a rail. The guide rail 7 is used as a rail for bridging between the jacks 6 and 6 having a required interval to guide the mounting recess forming device 8 described later.
The guide rail 7 includes a rail main body 70 having a required length and light receiving bodies 71 and 71 provided on both ends of the rail main body 70, and the total length is slightly longer than the length of the buried pipe to be newly laid. It is set as follows.

  The rail body 70 includes a horizontal plate 700 provided in a horizontal state, and a plate-like vertical plate 701 is provided vertically on the upper surface thereof, so that the rail body 70 has a substantially inverted “T” shape when viewed from the side. The vertical plate 701 has a reinforcing effect for preventing the horizontal plate 700 from being bent or twisted. Both side portions of the upper surface of the rail body 70 along the length direction of the horizontal plate 700 constitute a rail portion on which the traveling rollers 84 and 84 of the mounting recess forming device 8 described later are mounted. In this embodiment, the rail body 70 is formed of T-shaped steel. However, the rail body 70 is not limited as long as the mounting recess forming device 8 can move along the rail body 70. For example, I-shaped steel, angle steel, H-shaped steel, etc. can also be used. In addition, materials made of synthetic resin or wood can also be used.

Each light receiving body 71 includes a light receiving plate 710 and two plate-like leg members 711 and 711 protruding downward from the back surface of the light receiving plate 710. The leg members 711 and 711 are arranged side by side with a required interval. Each light receiving plate 710 is provided with a crosshair aiming point 713.
Each light receiving body 71 is provided so that the vertical plate 701 is sandwiched between the leg members 711 and 711, and the connecting pin 712 is passed through the leg members 711 and 711 and the vertical plate 701, thereby rotating around the connecting pin 712. It is movable and is provided so that it can be defeated from a standing position.

FIG. 12 shows the mounting recess forming device 8. The mounting recess forming device 8 is for forming the surface shape of the sand foundation on which the buried pipe (circular pipe) is placed.
The mounting recess forming device 8 includes a plate-like base material 80 having a square shape in plan view, side wall members 81 and 81 erected so as to face both upper sides of the base material 80, and the back surface of the base material 80. A scraping member 82 is provided. Between the upper portions of the side wall members 81, a handle member 83 formed by bending round steel into a substantially inverted “U” -shaped arc is bridged.

  On the inner side of the upper edge side of each side wall member 81, traveling rollers 84, 84 are provided in parallel at two locations with a required interval. Each traveling roller 84 has a ring-shaped rolling element 840 whose outer peripheral surface rolls on the rail portion of the rail body 70, and a disc-shaped steadying member 841 having a diameter larger than the outer diameter of the rolling element 840 is provided on the rolling element 840. It is formed to be fixed to one side surface.

  Each traveling roller 84 is attached so that the steadying member 841 rotates while sliding with the sidewall member 81 by passing the shaft pin 85 through the center of the steadying member 841 and the sidewall member 81. The running rollers 84 and 84 of the one side wall member 81 and the other side wall member 81 are provided so as to face each other.

  The scratching member 82 is a plate-like body having a substantially semicircular curved portion in a side view, and is detachably mounted with the arcuate side facing downward. The scratching member 82 is set so that the outer shape of the curved portion is substantially the same as the outer surface shape of the buried pipe to be laid. Further, the scraping member 82 is attached so that the position of the outer edge portion (the height) is substantially the same as the height of the outer surface of the embedded pipe 11 when the mounting recess forming device 8 is attached to the guide rail 7. ing. The means for setting the height of the scratching member 82 is not particularly limited as long as the position of the outer edge portion of the scratching member 82 can be substantially the same as the height of the outer surface of the embedded pipe 11. For example, it can be adjusted by the scraping member 82 itself, or can be adjusted by the position where the traveling roller 84 is provided. The scraper member 82 can be replaced with one having an outer shape substantially the same as the outer surface shape of the buried pipe depending on the type of the buried pipe to be laid.

(Work)
A laying method using the buried pipe laying device shown in the present embodiment will be described with reference to FIGS.
In the present embodiment, a case will be described in which a buried pipe 11 is newly connected to a buried pipe 10 that has already been laid.

(1) The ground surface of the construction site is excavated with a civil engineering machine (not shown) such as a backhoe to form a groove 20 for laying the buried pipe 11. The groove 20 is formed longer than the length of the buried pipe 11 to be laid. In actual construction, the groove 20 is formed to a length that allows a plurality of buried pipes 11 to be laid (see FIG. 1).

(2) A transit (not shown) is set up on the ground surface, and a target point for laying the buried pipe 11 is set in the groove 20. In actual construction, the laying target point is set on the front side of a groove in which a plurality of buried pipes 11 can be laid so that it is not necessary to set the number of times every time the individual buried pipes 11 are laid.

(3) Install the light receiving device 4 at a position that is the target point for installation (see FIG. 1). The light receiving tool 4 is installed by piercing the ground with a stab pile 401... With a sharp tip (see FIG. 2). In the present embodiment, the light receiving tool 4 is provided with the fixed base 400 placed against the surface of the ground, but this is not a limitation, and the light receiving tool 4 provides a necessary gap between the fixed base 400 and the ground. It can also be provided. 2, 4, 5, and 6, the light receiving device 4 represents a state where it is installed at a position on the front side of the buried pipe 11 that is connected to the buried pipe 10 for the convenience of illustration. .

  The light receiving tool 4 turns the spiral rod 410 to change the height of the target body 42, or turns the handle 423 to move the light receiving body 420 in the lateral direction along the light receiving section adjusting body 421. And the aiming point 425 of the photoreceptor 420 are aligned.

(4) The laser irradiation device 3 is installed on the buried pipe 10 that has already been laid (see FIG. 2). The laser irradiation device 3 is installed such that the leg members 301 and 301 are placed on the embedded tube 10 and the laser beam irradiation hole 312 is positioned on a vertical line passing through the center of the embedded tube 10 (see FIG. 3). The installation position of the laser irradiation device 3 is set by adjusting the adjustment screws 314 and 315 while confirming the level 313 so that the laser beam irradiates the aiming point 425 of the photoreceptor 420.

  The sand foundation 21 of the buried pipe 10 in which the laser irradiation device 3 is installed is provided to a position slightly ahead of the front part of the buried pipe 10, and a portion corresponding to the front part side is formed in a concave shape. The height is low so that it is difficult to bite sand during connection (see FIG. 2).

(5) Sand (flowable solid) for constituting the sand foundation 22 for the buried pipe 11 is put between the buried pipe 10 and the light receiving device 4 in the groove 20. Sand is introduced over substantially the entire length of the place where the buried pipe 11 is laid. The sand is leveled by the leveling tool 5 so as to have substantially the same height (see FIG. 4).

  Since the leveling tool 5 is provided with a light receiving part 51 for receiving a laser beam, if the light receiving part 51 is set at the same height as the distance from the surface of the sand to be uniformly formed to the laser beam, the leveling tool 5 is provided. However, the distance from the sand surface to the laser beam can be easily reduced by setting the leveling tool main body 50 vertically so that the leveling plate 501 is placed on the sand as appropriate, and allowing the laser beam to strike the light receiving portion 51. Can be adjusted to be the same. Moreover, since the light-receiving part 51 can move in the length direction of the handle part 500, the distance from the surface of the sand set using the leveling tool 5 to the laser beam can be arbitrarily adjusted. Note that the distance from the sand surface to the laser beam at this time does not need to be set to be exactly the same over the entire length, and may be roughly aligned.

(6) The sand foundation 22 leveled in the above process is rolled by a rolling device (not shown). The sand foundation 22 is compacted, and the height of the surface is slightly lowered.

(7) Concave portions 221... That make it difficult to bite sand when the buried pipes are connected are formed on the sand foundation 22 where both ends of each buried pipe 11 are located. In FIG. 5, the concave portions 221 and 221 are shown only at locations where both ends of the buried pipe 11 connected to the buried pipe 10 are positioned for the convenience of illustration.

(8) The jacks 6 ... are installed on the concave portions 221 ... of the sand foundation 22 having a reduced height. The jack 6 is provided at two locations on the base side and the front side corresponding to the buried tube 11 connected to the buried tube 10 and a location corresponding to the front side of the next buried tube 11. However, this is not limited, and at least the jack 6 may be provided on the base side and the front side of the buried pipe 11 connected to the buried pipe 10.

(9) The guide rail 7 is bridged between the receiving plates 61 and 61 of the jacks 6 and 6 provided on the base side and the front side of the buried pipe 11 connected to the buried pipe 10 (see FIG. 5). The guide rail 7 is adjusted so that the laser beam is applied to the aiming point 713 of the light receiving plate 710 by extending and contracting the support 60 of each jack 6. Since the laser beam is blocked by hitting the light receiving plate 710, when the position of the light receiving body 71 on the light receiving tool 4 side is adjusted, the light receiving body 71 on the embedded tube 10 side is tilted.

(10) The mounting recess forming device 8 is mounted on the guide rail 7 whose position is set. The mounting recess forming device 8 is provided so that the horizontal plate 700 of the rail body 70 is positioned in the gap between the base material 80 and the traveling rollers 84... And the traveling rollers 84. It is done. The mounting recess forming device 8 is set so that the position of the outer edge of the scraping member 82 is substantially the same as the height of the outer surface of the embedded pipe 11 in the state where it is mounted on the guide rail 7 whose position is set. is there.

(11) Hold the handle member 83 and move the mounting recess forming device 8 along the guide rail 7 while maintaining the state where the traveling rollers 84... Roll on the horizontal plate 700. At this time, the sand foundation 22 is scraped (shaved) by the scraping member 82, and a mounting recess 220 having a circular arc shape having the same shape as the outer shape of the scratching member 82 is formed on the sand foundation 22 (see FIG. 5). ).

(12) When the mounting recess 220 is formed in the sand foundation 22 corresponding to the buried pipe 11 connected to the buried pipe 10, a guide is provided between the receiving plates 61 and 61 of the jacks 6 and 6 corresponding to the next buried pipe 11. Move the rail 7 over. The guide rail 7 is installed with its position adjusted as described above. Similarly, the mounting recess forming device 8 is moved along the guide rail 7 to form the mounting recess 220 in the sand foundation 22. In this way, the mounting recess 220 is formed over the entire length of the sand foundation 22.

(13) The buried pipe 11 is fitted into the mounting recess 220 formed in the sand foundation 22 and connected to the buried pipe 10 (see FIG. 6). Since the mounting recess 220 is set so that the outer shape of the scraping member 82 has substantially the same shape as the outer surface shape of the embedded tube 11, it is formed to have substantially the same shape as the outer surface shape of the embedded tube 11, The buried tube 11 is provided with substantially no gap with respect to the mounting recess 220.

(14) The buried pipe 11 provided in the mounting recess 220 is inspected to confirm the laying position. The inspection of the laying position uses an inspection tool 25 formed of a plate-like body having a substantially inverted “Y” shape when viewed from the side. At a required position of the inspection tool 25, a light receiving unit 250 having a cross-pointing aim point 251 is provided.
The inspection tool 25 is used by being placed on the upper portion of the buried tube 11 so that the light receiving portion 250 is positioned on the upper portion (see FIG. 6). If the laser beam is applied to the aiming point 251 in a state where the inspection tool 25 is placed on the upper portion of the buried tube 11, the inspection tool 25 is laid at a planned position.

If there is no problem in the laying position, the fixed pipes 26 and 26 are provided to fix the embedded pipe 11, and sand or the like is put in the groove 20 to fill the embedded pipe 11.
The buried pipe 11 is laid by the above process.

  According to this laying method of the buried pipe, the buried pipe 11 can be laid at a predetermined position by simply placing the buried pipe 11 in the mounting recess 220 formed in the sand foundation 22. That is, since the position of the buried pipe 11 is determined by placing it on the mounting recess 220 that can be accurately and easily formed by the scraping member 82, the work of finishing the surface of the sand foundation 22 with high accuracy is unnecessary, and the laying work is simple. The working time can be shortened.

  Moreover, according to this laying method of the buried pipe, since the concave mounting recess 220 is formed in the sand foundation 22 and the buried pipe 11 is fitted in the mounting recess 220, it is provided in the sand foundation 22. A stable state is maintained so that it does not move from time to time, and safety is high.

  In the present embodiment, the laying target point is set on the front side of the groove where a plurality of buried pipes 11 can be laid, and the light receiving device 4 is installed and installed at the position to be the laying target point. This is not a limitation, and each laying pipe 11 may be laid so that the laying target point and the light receiving tool 4 are provided.

  The terms and expressions used in this specification are merely explanatory and are not limiting at all, and exclude terms and expressions equivalent to the features described in this specification and parts thereof. There is no intention to do. It goes without saying that various modifications are possible within the scope of the technical idea of the present invention.

Explanatory drawing for demonstrating the 1st process of the laying method of a buried pipe. Explanatory drawing for demonstrating the 2nd process of the laying method of a buried pipe. Explanatory drawing which shows the installation state of the laser irradiation apparatus on a buried pipe. Explanatory drawing for demonstrating the 3rd process of the laying method of a buried pipe. Explanatory drawing for demonstrating the 4th process of the laying method of a buried pipe. Explanatory drawing for demonstrating the 5th process of the laying method of a buried pipe. Explanatory drawing which shows the laser irradiation apparatus used with the laying method of a buried pipe. Explanatory drawing which shows the light receiving tool used with the laying method of a buried pipe. Explanatory drawing which shows the leveling tool used with the laying method of a buried pipe. Explanatory drawing which shows the jack used with the laying method of a buried pipe. Explanatory drawing which shows the guide rail used with the laying method of a buried pipe. Explanatory drawing which shows the mounting recessed part formation apparatus used with the laying method of a buried pipe.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Embedded pipe 11 Embedded pipe 20 Groove 21 Sand foundation 22 Sand foundation 220 Mounting recessed part 221 Concave part 25 Inspection tool 250 Light receiving part 251 Aiming point 26 Fixed pile 3 Laser irradiation apparatus 30 Base 300 Mounting board 301 Leg member 31 Laser irradiation Body 310 Fixing base 311 Case 312 Irradiation hole 313 Level 316 Switch 4 Light receiving tool 40 Puncture base 400 Fixing base 401 Puncture pile 41 Height adjustment body 410 Spiral hook 411 Engagement section 42 Target body 420 Light reception body 421 Light reception section adjustment body 422 Spiral rod 423 Handle 424 Transition body 425 Aiming point 5 Leveling device 50 Leveling device main body 500 Handle portion 501 Leveling plate 51 Light receiving portion 6 Jack 60 Post 61 Receiving plate 62 Engaging portion 7 Guide rail 70 Rail body 700 Horizontal Plate 701 Vertical plate 71 Light receiver 710 Light receiver 711 Leg member 712 Connecting pin 713 Aiming point 8 Recess forming apparatus 80 substrate 81 side wall member 82 掻部 member 83 grip member 84 conveying rollers 840 rolling element 841 bracing member 85 shaft pin

Claims (10)

It is a method of laying buried pipes by the open-cut method,
A flowable solid is provided in the groove to form a foundation, a placement recess is formed at a predetermined position of the foundation for laying the buried pipe, and the buried pipe is placed and placed in the placement recess. And
How to lay buried pipes. It is a method of laying buried pipes by the open-cut method,
Providing a flowable solid in the groove to form a foundation;
Installing a support device at a required interval and constructing a rail between the support devices;
A mounting recess forming device provided with a scraping member is attached to the rail, and the mounting recess forming device is moved along the rail to scrape the fluid solid material of the foundation, and at a predetermined position of the foundation for laying the buried pipe Forming a mounting recess;
Placing and placing the buried pipe in the placing recess,
It is characterized by having
How to lay buried pipes. A laying device used when laying a buried pipe by the open-cut method,
A support device having a receiving part capable of adjusting the height;
A rail constructed between the receiving parts;
A mounting recess forming device having a scratching member;
Means for setting the height of the scratching member;
With
The mounting recess forming device moves along the rail to scrape the fluid solid constituting the foundation provided in the groove with a scraping member, and the mounting recess is located at a predetermined position of the foundation for laying the buried pipe. It is configured to be attachable to a rail so that it can be formed,
Equipment for laying buried pipes. A light receiving device that determines a reference point necessary to determine the laying position of the buried pipe at a position corresponding to the front side of the buried pipe to be laid,
A laser irradiation device provided so that a laser beam is irradiated toward a light receiving device from a reference point determined at a position corresponding to the base side of the buried tube;
Characterized by comprising
The buried pipe laying device according to claim 3. A rail that constitutes the buried pipe laying device according to claim 3,
In the state of being laid between the receiving parts, the mounting recess forming device is configured to be movable along,
Rail that constitutes a laying device for buried pipes. It is a mounting recessed part formation apparatus which comprises the laying apparatus of the buried pipe of Claim 3, Comprising:
It has a scratching member and is configured to be attachable to a rail so that a mounting recess can be formed by scraping the flowable solid with a scratching member at a predetermined position of the foundation on which the buried pipe is laid. To
The mounting recessed part formation apparatus which comprises the laying apparatus of a buried pipe. A light receiving device constituting the buried pipe laying device according to claim 4,
It is characterized in that it is configured so that a reference point necessary for determining the laying position of the buried pipe can be determined at a location corresponding to the front side of the buried pipe to be laid,
A light receiving device constituting a laying device for a buried pipe. A laser irradiation device constituting the laying device for a buried pipe according to claim 4,
It is characterized in that it is configured so that the laser beam can be irradiated toward the light receiving device from the reference point determined at the location corresponding to the base side of the buried pipe,
A laser irradiation device that constitutes a laying device for buried pipes. The method of laying a buried pipe according to claim 1 or 2, wherein the leveling method of the fluid solid constituting the foundation,
The leveling part provided at the tip of the handle is properly set up on the flowable solid, and a laser beam is applied to the laser receiving part provided at the required position of the handle to measure the distance from the surface of the flowable solid. Characterized by leveling a flowable solid,
Leveling method. A leveling tool used in the leveling method according to claim 9,
The handle portion is configured to have a leveling portion at the tip of the handle portion, and at a required position of the handle portion, a light receiving portion capable of receiving a laser beam is provided movably along the handle portion. Features
Ground leveling tool.

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