WO2006046324A1 - Procede de pose d’elements enterres - Google Patents

Procede de pose d’elements enterres Download PDF

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Publication number
WO2006046324A1
WO2006046324A1 PCT/JP2005/007230 JP2005007230W WO2006046324A1 WO 2006046324 A1 WO2006046324 A1 WO 2006046324A1 JP 2005007230 W JP2005007230 W JP 2005007230W WO 2006046324 A1 WO2006046324 A1 WO 2006046324A1
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WO
WIPO (PCT)
Prior art keywords
paving
cutting
paving plate
plate piece
ground
Prior art date
Application number
PCT/JP2005/007230
Other languages
English (en)
Japanese (ja)
Inventor
Susumu Usukura
Daisuke Usukura
Original Assignee
Shinnihon-Kogyo, Inc.
Daishin Kogyo, Inc.
Sanwa-Kogyo, Inc.
Daifu, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shinnihon-Kogyo, Inc., Daishin Kogyo, Inc., Sanwa-Kogyo, Inc., Daifu, Inc. filed Critical Shinnihon-Kogyo, Inc.
Priority to JP2006542238A priority Critical patent/JP4466878B2/ja
Publication of WO2006046324A1 publication Critical patent/WO2006046324A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F3/00—Sewer pipe-line systems
    • E03F3/06—Methods of, or installations for, laying sewer pipes

Definitions

  • the present invention relates to a buried object laying method for renewing or newly installing a buried object such as a lead-in pipe, and more particularly to a new method called “MDP” (Minimum Digging Process).
  • MDP Minimum Digging Process
  • Patent Document 1 discloses a method for installing a lead-in pipe for piping a branch pipe from an underground pipe such as a gas pipe, a water pipe, and a sewer pipe and drawing it into a building along a road. It has been. Specifically, first, part of the paved road surface is cut with a circular cutter, and a lifting tool is inserted in the center. A diameter expanding member is attached to the tip of the lifting tool, and the lifting tool is bitten into the pavement slab by expanding the diameter expanding member. Then, the cut paving slab is removed by lifting the lifting tool with a crane. Next, the casing inside the removed area is excavated with a machine while the casing is press-fitted with a hydraulic machine.
  • Patent Document 1 Japanese Patent Laid-Open No. 2000-45675
  • Safety considerations include not damaging or destroying underground objects that have not been grasped by workers during excavation.
  • the repaired pavement plate maintains flatness over a long period of time, and it is difficult for the road surface to collapse.
  • the present invention has been made in view of strong circumstances, and an object of the present invention is to improve workability and safety by performing minimal excavation regarding the renewal and new installation of a carrier such as a lead-in pipe. It is also to provide a new method for laying suspended objects that satisfies the overall environment.
  • the present invention is configured as follows.
  • the invention described in claim 1 is a method of laying an embedded object for renewing or newly installing an embedded object, and the surface of the paving plate laid on the ground to form a paving plate piece separated from the surroundings.
  • a casing Prior to lowering the casing to the ground, a casing is placed in a predetermined area from which the plate pieces have been removed, and the ground exposed on the inner bottom of the casing is suction-excavated while confirming the presence or absence of a carrier.
  • the invention according to claim 2 is a method for laying a buried object in which the buried object is renewed or newly installed. A casing is disposed in a predetermined area and the casing is lowered before the casing is lowered to the ground.
  • the invention described in claim 3 includes a restoration step of ensuring a predetermined flatness by eliminating a step from the surrounding after the backfilling. Steps will be eliminated so as not to interfere with traffic such as driving cars, bicycles, and pedestrian traffic, and the specified flatness will be ensured.
  • a pavement plate piece having a tapered side surface with a cross-sectional area decreasing in the depth direction and separated from the surroundings is formed.
  • a cutting step of cutting the outer periphery of a predetermined area set in the paving plate from the surface of the paving plate laid on the ground to the roadbed under the paving plate, and opening and closing with respect to the fulcrum A holding step of lowering a clamp having a plurality of clamp arms detachably attached and fitting the plurality of clamp arms into a cutting groove formed by the cutter; and Removing the paving plate piece from the paving plate by raising the clamp while maintaining a state where the side surface of the plate piece with the taper is being clamped.
  • the pavement plate piece is removed by raising the clamp holding the pavement plate piece, and this pavement plate piece has a tapered side surface that reduces the cross-sectional area in the depth direction. It is possible to effectively prevent falling off of the paved plate pieces. As a result, partial removal of the paving slab can be performed accurately with simple operations.
  • the invention according to claim 5 is characterized in that, in the removal step, when the clamp is raised, the plurality of clamp arms are displaced in the closing direction due to the weight of the paving plate piece. The ends of the plurality of clamp arms are engaged with the tapered side surfaces of the paving plate piece. Between the tips of multiple clamp arms and the tapered side of the paving plate By using the frictional force generated in this case, the engagement force necessary for the clamp to hold the paving plate piece can be obtained easily and reliably.
  • the plurality of clamp arms are displaced in a closing direction by hydraulic pressure so that the front ends of the plurality of clamps are tapered side surfaces of the paving plate piece.
  • Engage with. Force S can be used to displace the clamp arms in the closing direction by hydraulic pressure and to ensure that the tips of the clamps engage the tapered side of the paving plate.
  • the surface of the pavement plate laid on the ground is below the pavement plate.
  • a cutting step that cuts the outer periphery of a predetermined area set in the pavement plate up to the roadbed with a cutter, and a rod-like lifting tool is passed through the cut pavement plate piece from above at a first insertion angle. And holding the lifting tool into the pavement plate piece by displacing the lifting tool passed through the pavement plate piece to a second insertion angle different from the first insertion angle. And removing the paving plate piece from the paving plate by raising the lifting tool while maintaining the second insertion angle while pressing.
  • a bar-shaped lifting tool is inserted into the cut paving plate piece from above at the first insertion angle, and the lifting tool is displaced to a second insertion angle that is different from the first insertion angle.
  • the pavement plate can be partially removed accurately by a simple operation by pressing the piece and raising the lifting tool while maintaining the second insertion angle.
  • the surface of the pavement plate laid on the ground is directly below the pavement plate.
  • a surface below the pavement plate is formed from the surface of the pavement plate laid on the ground.
  • a cutting step for cutting the outer periphery of a predetermined area set in the paving plate up to the roadbed with a cutter, and a clamp having a plurality of clamp arms attached to the fulcrum so as to be openable and closable is a first insertion angle.
  • the tip of the plurality of clamp arms is brought into pressure contact with the side surface of the paving plate piece and the second insertion angle is maintained by displacing to a second insertion angle different from
  • a removal step of removing the paving plate piece from the paving plate by raising the clamp By inserting multiple clamp arms into the cutting groove from above and shifting the multiple clamp arms inserted into the cutting groove to a second insertion angle different from the first insertion angle, the tips of the multiple clamp arms By pressing the side of the paving plate piece and raising the clamp while maintaining the second insertion angle, partial removal of the paving plate can be accurately performed with simple operations.
  • the surface of the paving plate laid on the ground is below the paving plate.
  • a cutting step that cuts the outer periphery of a predetermined area set in the paving plate up to the roadbed with a cutter, a holding step that arranges a suction port of a suction device on the surface of the paving plate piece, and the suction device Removing the paving plate piece from the paving plate by raising the suction machine while sucking the paving plate piece. While sucking the pavement plate piece with the suction machine, lift the suction machine to Partial removal can be performed accurately with simple operations.
  • the invention according to claim 11 is characterized in that, in the paving plate cutting and removing step, in order to form a paving plate piece separated from the surroundings, the surface of the paving plate laid on the ground is below the paving plate.
  • the cutting step includes a step of performing suction using a wet cutter as the cutter and simultaneously sucking sewage generated by the cutting with a pump. It removes sewage generated by cutting and excels in workability and environmental performance.
  • an arrangement step of arranging a casing in a predetermined region on the surface of the ground, and appearance of a carrier object prior to lowering the casing to the ground A suction excavation step for sucking and excavating the ground exposed on the inner bottom of the casing while confirming whether or not there is any buried object due to the suction excavation, and following the suction excavation, A descent step for descent to the ground. If the ground exposed at the inner bottom of the casing is excavated while confirming the presence or absence of the carrier, and no carrier appears by the suction excavation, follow the suction excavation to move the casing to the ground. Because it is lowered, even if an unexpected carrier is carried in the ground, the damage and destruction can be avoided in advance.
  • the invention according to claim 14 repeats a series of steps from the suction excavation step to the descent step until a target depth in the ground is reached. Even if there is an unexpected buried object in the ground until the target depth in the ground is reached, damage and destruction can be avoided in advance.
  • the invention according to claim 15 is a step in which the lowering step lowers the casing by its own weight when excavating a portion directly below the peripheral portion of the casing by suction excavation. It is a simple structure in which the casing is lowered by its own weight.
  • the lowering step is a step of press-fitting the casing into the ground using an oil pressure for lowering the casing. The casing can be lowered quickly and reliably by oil pressure.
  • the vertical hole in the backfilling step, is backfilled by compaction using the improved soil obtained by adding the improving material to the excavated soil. It is possible to refill the vertical holes using compacted soil, and to prevent subsidence after construction.
  • the invention according to claim 19 is the storage step of storing the pavement plate piece removed from the pavement plate in the backfilling step, and after completion of a predetermined operation for the predetermined area. And a refit step of fitting the stored pavement plate piece back into the predetermined area. By putting the stored pavement plate piece back into the predetermined area, it is possible to carry out the re-loading operation at a low cost.
  • the predetermined region has a circular shape with a diameter of approximately 900 mm.
  • the predetermined area is a small circular area with a diameter of approximately 900mm, and the workability of suction excavation is good.
  • FIG. 1 is an explanatory diagram of the buried pipe laying method of the first invention.
  • the ground on which asphalt and other paving plates 1 (roads) are laid on the ground It consists of subbase 2, lower base 3 and subgrade 4.
  • Upper-layer roadbed 2 and lower-layer roadbed 3 are provided directly below the area where pavement plate 1 exists.
  • the upper roadbed 2 is a layer covered with crushed stones of 30 mm or less, for example, and the lower layer 3 is a layer covered with crushed stones of 40 mm or less, for example.
  • work object 5 which is a buried object to be constructed, is buried at a known target depth Dtgt.
  • the work target 5 is assumed to be a water pipe buried under a road, more specifically, a connection part between the pipe and a service pipe for drawing water into a residential land or site.
  • the carrying object 5 includes, but is not limited to, a gas pipe, a sewer pipe, or an electric or telephone carrying pipe.
  • the series of operations consists of removing the pavement plate (Step 1), drilling the vertical hole (Step 2), processing the work object (Step 3), unloading the vertical hole (Step 4), and repairing the pavement plate (Step 5). ) And les.
  • the carrying pipe laying method (MDP method) of the first invention can be applied not only to the renewal of buried objects but also to the new construction.
  • Figure 2 shows the construction procedure of the buried pipe laying method for renewing or newly constructing buried objects.
  • the suspended pipe laying method for renewal or installation of this suspended structure includes preparation (step al), pavement cutting (step a2), excavation pavement processing (step a3), suction excavation ( Step a4), confirmation of the installation position and depth (Step a5), judgment of whether the pipeline is newly installed or the existing pipeline is updated (Step a6), and if the pipeline is newly installed, laying the new pipeline (Step a7), existing pipe In case of road renewal, renew existing pipe (step a8), backfill (step a9), determine whether temporary restoration is necessary (step a10), and if temporary restoration is not necessary, this restoration (step al l) If temporary recovery is necessary, perform this recovery after temporary recovery (step al2). By removing the paving slab pieces from the paving slab and performing minimal suction excavation, workability, safety and environmental performance can be satisfied as a whole.
  • Pavement plate removal is a pavement plate cutting / removal process with preparation (Step al), pavement cutting (Step a2), and excavation pavement processing (Step a3).
  • step al prepare a construction plan based on a sufficient investigation to satisfy the design conditions during construction, so that the implementation process is not hindered.
  • step a2 prepares a construction plan based on a sufficient investigation to satisfy the design conditions during construction, so that the implementation process is not hindered.
  • step a3 prepares a construction plan based on a sufficient investigation to satisfy the design conditions during construction, so that the implementation process is not hindered.
  • step a3 the pavement plate 1 that becomes the work area is partially removed.
  • the outer periphery of a predetermined area is cut with a cutter to a depth that reaches the upper layer roadbed 2, and the paving plate pieces 7 (see Fig. 2) separated from the surroundings are removed using a clamp that can be raised and lowered. .
  • the paving plate piece 7 from which the paving plate beam has been removed is stored in a predetermined processing bag.
  • the pavement plate cutting and removing step includes a step of cutting the pavement plate 1, a step of setting a clamp in the cut area of the pavement plate 1, and a step of removing the cut area of the pavement plate 1.
  • FIG. 3 is an explanatory diagram of the paving plate cutting and removing process of the paving plate 1 according to the first embodiment.
  • the fixed shaft of the circular force utter 8 is attached to the center O of the work area S set on the surface of the pavement plate 1.
  • This work area S is located immediately above the work object 5 whose embedment location is known, and corresponds to the formation area of the paving plate pieces 7 separated from the surroundings, as will be described later.
  • the working area S for reducing the working area is defined as a circular shape having a relatively small diameter of about 900 mm.
  • the work area S where the paving slab 1 is cut is sufficiently large enough for one worker to enter because the work on the work object 5 is performed without open cutting.
  • the operator attaches the fixed shaft of the circular cutter 8 to the center O and cuts the outer periphery of the work area S with the circular cutter 8 as shown in Fig. 3 (b). To do.
  • the circular cutter 8 uses a wet cutter that cuts while cooling the diamond blade with water from the viewpoint of suppressing the release of dust generated during cutting.
  • the sewage generated by the cutting is sucked by a pump (not shown) (for example, a vacuum pump or a pressure pump) simultaneously with the cutting by the wet cutter.
  • a pump for example, a vacuum pump or a pressure pump
  • the cutting edge of the circular cutter 8 is made to be incident obliquely with respect to the surface of the pavement plate 1.
  • the side surface of the pavement plate piece 7 has a taper that decreases in the depth direction, in other words, the cross-sectional area of the pavement plate piece 7 in the depth direction.
  • a taper is formed such that becomes smaller.
  • the tapered side surface can be easily formed by devising the shape of the circular cutter 8.
  • FIG. 4 is a configuration diagram of a circular cutter 8 as an example.
  • This circular cutter 8 having a diameter ⁇ of approximately 400 mm has a dish shape in which the cutting edge side is inclined rather than a simple flat shape.
  • the force is a plane perpendicular to the central axis X up to a radius of about 39 mm. From here onwards, it extends at a predetermined inclination angle ⁇ (for example, 10 degrees) with respect to this vertical face.
  • a cutter blade 8 a is provided on the outer periphery of the circular cutter 8.
  • the incident angle of the cutter blade 8 with respect to the surface of the paving plate 1 even if the rotational axis of the circular cutter 8 is arranged parallel to the surface of the paving plate 1 Is maintained at ⁇ . Therefore, along with the cut IJ, a taper inclined at a taper angle ⁇ is formed on the side surface of the paving plate piece 7. Even when such a general flat circular cutter 8 is used instead of the special circular cutter 8, the same taper can be formed.
  • the incident angle of the cutter blade 8a may be set to ⁇ by, for example, inclining the rotational axis of the circular force utter 8 with respect to the surface of the paving plate 1.
  • FIG. 5 is a cross-sectional view of the paving plate cutting and removing process of the paving plate 1 according to this embodiment.
  • the operator attaches the fixed axis of the circular cutter 8 to the center O shown in FIG. 3 and arranges the circular cutter 8 so that the central axis X is parallel to the surface of the paving plate 1.
  • the operator lowers the circular cutter 8 rotating in one direction.
  • the cutter blade 8a is incident obliquely on the surface of the pavement plate 1 and cuts the pavement plate 1 obliquely with respect to the depth direction.
  • FIG. 6 is related to this embodiment. It is explanatory drawing of the pavement plate cutting / removal process of the pavement plate 1.
  • the clamp 9 has a plurality of clamp arms 9b attached to the fulcrum 9a so as to be openable and closable. Each clamp arm 9b is swingably attached to the fulcrum 9a. The tip of each clamp arm 9b is made of the same material as that of the clamp arm 9b, and is provided with teeth for holding the object.
  • the operator lowers the clamp 9 and fits the plurality of clamp arms 9 b into the cutting groove 6 formed by the circular cutter 8 from above.
  • FIG. 6 is related to this embodiment. It is explanatory drawing of the pavement plate cutting / removal process of the pavement plate 1.
  • the clamp 9 has a plurality of clamp arms 9b attached to the fulcrum 9a so as to be openable and closable. Each clamp arm 9b is swingably attached to the fulcrum 9a. The tip of each clamp arm 9b is made of the same material as that of the clamp
  • the operator raises the clamp 9 while maintaining the state in which the plurality of clamp arms 9b sandwich the tapered side surface of the paving plate piece 7 and keep it in a bent state. .
  • the clamp 9 is raised, due to the weight of the pavement plate piece 7, the tips of the plurality of clamp arms 9 b engage with the tapered side surface of the pavement plate piece 7. That is, at the time of ascent, the plurality of clamp arms 9b are displaced in the closing direction, and the tips of the clamp arms 9b abut against the side surface of the paving slab piece 7 and mesh with the taper of the side surface.
  • the engagement force increases as the lifting force of the clamp 9 increases, and the slippage of the paving plate piece 7 is also restricted.
  • the clamp 9 can sufficiently obtain the engagement force necessary for holding the pavement plate piece 7, so that the pavement plate piece 7 can be removed easily and accurately.
  • the paving plate piece 7 is removed by raising the clamp 9 holding the paving plate piece 7. Since the side surface of the pavement plate piece 7 is provided with a taper having a diameter reduced in the depth direction, dropping of the nipped pavement plate piece 7 is effectively regulated. Further, a special and complicated lifting tool for removing the paving plate piece 7 is not necessarily required, and the work can be efficiently performed by a general-purpose device having a simple configuration such as the clamp 9. In addition, the paving slab piece 7 can be removed as one piece without being destroyed, and dust generation and noise caused by the destruction can be prevented. Furthermore, when disposing the pavement plate piece 7 as a single piece of asphalt, it is necessary to store it in a special storage bag. It can be transported on the road to the pact, which is advantageous in terms of transportation and disposal.
  • the present invention is not limited to this.
  • the present invention is necessary by actively controlling the operation of the clamp arms 9b, such as displacing the plurality of clamp arms 9b in the closing direction by hydraulic pressure. A sufficient engagement force may be ensured.
  • the work area S is circular, but the present invention is not limited to this, and may be any shape including a rectangular piece or the like. These variations are the same in the embodiments described later.
  • FIG. 7 is an explanatory diagram of the paving plate cutting and removing process of the paving plate 1 according to the second embodiment.
  • the same members as those described in the first embodiment are denoted by the same reference numerals, and description thereof is omitted here.
  • the fixed shaft of the circular cutter 8 is attached to the center O of the work area S set on the surface of the pavement plate 1 ((a) in the figure).
  • the operator uses the attached circular cutter 8 to cut the outer periphery of the working area S with a circular cutter with a radius of 450 mm with respect to the center 0.
  • the circular cutter 8 is not a dish-shaped one as in the first embodiment, but a general flat one is used in a general usage pattern. Therefore, the side surface of the pavement plate piece 7 is formed in a straight shape and does not need to be formed in a tapered shape as in the first embodiment.
  • a breaker 10 which is a form of a rod-like lifting tool, is inserted from above into a first insertion angle from a small hole (hereinafter referred to as “center hole”) drilled in the center O when the circular cutter 8 is attached. It is communicated with ⁇ 1 (Fig. (b)).
  • the breaker 10 is attached to the tip of the arm of the power shovel instead of the shovel.
  • a hydraulic breaker type E-203 manufactured by Japan Pneumatic Industrial Co., Ltd. can be used.
  • the rod-like lifting member need only be a simple rod-like member having a sharp tip that does not necessarily need to be a special tool with a diameter-expanding member as mentioned in the prior art.
  • the insertion angle ⁇ 1 of the breaker 10, that is, the angle formed by the vertical direction of the pavement plate 1 and the extending direction of the breaker 10 is preferably 0 ° or near 0 °.
  • a special lifting tool for removing the paving plate piece 7 is not necessarily required, and a simple and general-purpose bar-like member such as the breaker 10 is used for efficient work. Can be done.
  • the pavement plate piece 7 can be removed as one piece without breaking, dust generation and noise due to breakage can be prevented.
  • the extracted pavement plate 1 can be disposed of as a single block of asphalt, it is advantageous for transportation and disposal.
  • FIG. 8 is an explanatory diagram of the paving plate cutting and removing process of the paving plate 1 according to the third embodiment.
  • the paving plate piece 7 is removed using the clamp 11.
  • the clamp 11 is mainly composed of a base 11a and a plurality of clamp arms lib. One end of each clamp arm l ib is attached to the base 11a. The other end can be bent via the fulcrum 11c, and its state is controlled by, for example, hydraulic pressure.
  • the tip of the clamp arm l ib extends straight.
  • the tip of the clamp arm lib is bent in a substantially L shape.
  • the operator lowers the clamp 11 with the ends of the plurality of clamp arms l ib extended. Lower each clamp arm l ib into the cutting groove 6 from above.
  • the operator changes the tip of the clamp arm l ib from the extended state to the bent state (open state ⁇ closed state), as indicated by an arrow in the figure.
  • the tips of the plurality of clamp arms l ib engage with the side surfaces of the paving plate piece 7.
  • the worker raises the clamp 11 by lifting the wire id while maintaining this engaged state. As a result, the paving plate piece 7 is removed from the paving plate 1.
  • the removal work of the paving plate piece 7 can be performed easily and efficiently.
  • FIG. 9 is an explanatory diagram of the paving plate cutting and removing process of the paving plate 1 according to the fourth embodiment.
  • the paving plate piece 7 is removed using the clamp 12.
  • the clamp 12 is mainly composed of a base 12a and a plurality of glamp arms 12b. One end of each clamp arm 12b is swingably attached to the base 12a via a fulcrum 12c, and its state is controlled by, for example, hydraulic pressure.
  • the tip of the clamp arm 12b extends vertically downward.
  • the angle between the vertical line and the clamp arm 12b is ⁇ .
  • the operator lowers the clamp 12 with the plurality of clamp arms l ib extending vertically downward (first insertion angle), and fits each clamp arm 12b into the cutting groove 6 from above. Embed.
  • the operator displaces the plurality of clamp arms 12b fitted in the cutting grooves 6 to a second insertion angle (i.e., ⁇ shown in the drawing) different from the first insertion angle, so that the tips of the plurality of crank arms 12b Is pressed against the side of the pavement plate piece 7.
  • the tip of the clamp arm 12b is engaged with the side surface of the paving plate piece 7.
  • the operator lifts the wire 12d and raises the clamp 12 while maintaining this engaged state.
  • the paving plate piece 7 is removed from the paving plate 1.
  • the removal work of the paving plate piece 7 can be performed easily and efficiently.
  • FIG. 10 is an explanatory diagram of the paving plate cutting and removing process of the paving plate 1 according to the fifth embodiment.
  • the suction machine 13 is mainly composed of a suction body 13a having a suction port 13b and a hose 13c attached to the suction body 13a. The object is sucked into the suction port 13b by the suction force through the hose 13c.
  • the operator lowers the plurality of suction machines 13 and places the suction ports 13b on the paving plate piece 7.
  • the operator lifts the wire 13 d attached to the suction machine 13 while sucking the paving plate piece 7 with the suction machine 13.
  • the suction machine 13 rises, the paving plate piece 7 also rises, whereby the paving plate piece 7 is removed from the paving plate 1.
  • the removal work of the paving plate piece 7 can be performed easily and efficiently.
  • FIG. 11 is an explanatory diagram of the paving plate cutting and removing process of the paving plate 1 according to the sixth embodiment.
  • the paving plate piece 7 is removed by adhering the fixture 14a to the surface of the paving plate piece 7.
  • the attachment 14a is formed with an attachment portion for the wire 14b and a smooth attachment surface.
  • the worker uses a strong quick-drying adhesive to bond the plurality of attachments 14a to the surface of the paving plate piece 7. Then, the worker raises the wire 14b attached to the fixture 14a. As a result, the paving plate piece 7 is removed from the paving plate 1.
  • the removal work of the paving plate piece 7 can be performed easily and efficiently.
  • the drilling of the vertical hole is a suction excavation process that carries out suction excavation (Step a4) and confirmation of the buried position and depth (Step a5).
  • this suction excavation process the casing is placed in a predetermined area from which the paving slab pieces have been removed, and before the casing is lowered to the ground, the inside bottom of the casing is checked while confirming the appearance of the carrier.
  • a vertical hole is constructed by sucking the ground exposed to the ground.
  • the vertical hole is excavated by using the lowering of the casing and the suction excavation directly below the area where the pavement plate piece 7 is removed. Workers absorb the sediment generated by excavation. While digging while pulling, the casing, which serves as a retaining ring, is lowered to the upper layer subbase 2, lower subbase 3 and subgrade 4 by its own weight or hydraulic pressure. By carrying out suction excavation prior to the descent of the casing, it is possible to visually confirm the presence or absence of an unexpected carrier 5 'existing on the roadbed 4, so that damage and destruction can be avoided in advance.
  • the earth and sand generated by excavation is stored in a designated processing bag * for environmental consideration.
  • FIG. 12 is an explanatory diagram of the vertical hole suction excavation process in the road bed 4.
  • the vertical hole 11 passes through the paving slab 1 and reaches the uppermost part of the upper roadbed 2.
  • An exposed surface 2a of the road bed 2 that is the ground appears on the inner bottom of the casing 10 surrounding the vertical hole 11.
  • the operator sucks and excavates the ground exposed on the inner bottom of the casing 10 before lowering the casing 10 to the ground. Sediment generated by excavation is sucked through the hose 120.
  • This hose 120 is connected to a powerful pump machine that sucks and sucks sand and sand together with air. The operator advances excavation by sucking earth and sand while operating the hose 120 connected to the pump machine.
  • the pump machine absorbs dust and the like generated during excavation work, so that the influence of dust and the like around the work castle can be minimized. If the ground is relatively soft, it may be excavated by suction alone if possible.
  • the casing 10 is lowered by its own weight.
  • the casing 10 may be press-fitted using an oil pressure that lowers the casing 10. In this case, you can press fit while rotating the casing 10 with a hydraulic machine. This is effective when the descent due to its own weight is difficult due to the frictional force generated between the outer wall of the casing 10 and the ground.
  • the excavation in the suction excavation process includes excavation of the upper layer subbase 2 and the lower layer subbase 3, This includes the excavation of subgrade 4. Both are the same in that the excavation by suction of the casing 10 is used together, but in the latter case, it is necessary to excavate while confirming the unexpected buried object 5 ', so a process different from the former is required. It has been adopted.
  • the upper and lower roadbeds 2 and 3 are excavated by the same process as before until the roadbed 4 is exposed at the inner bottom of the casing 10.
  • These roadbeds 2 and 3 are artificially stacked when laying the road, and it is obvious that there are no buried objects. For this reason, there is no need to adopt the excavation process that involves confirmation of unforeseen buried objects as described below for excavation of roadbeds 2 and 3.
  • FIG. 13 is a flowchart showing a flow of a vertical hole suction excavation process in the road bed 4.
  • a part of the exposed surface 2a is excavated by a predetermined depth Djet by air or a jet (FIG. 12 (c)).
  • the operator excavates the exposed surface 2a using the suction force from the hose 120.
  • the sucked earth and sand are released and stored in a designated processing bag that is prepared separately from the paving plate disposal if necessary.
  • the partial excavation of the exposed surface 2a also has a trial drilling meaning to confirm that there is no unexpected buried object 5 'within the predetermined depth Djet. Therefore, for example, the inner periphery of the vertical hole 11 may be excavated, or an arbitrary one or a plurality of locations may be excavated. From the viewpoint of the trial moat, it is not always necessary to excavate the entire exposed surface 2a, but it is naturally possible to excavate the entire exposed surface 2a.
  • step 23 When the partial excavation for the predetermined depth Djet is completed without the appearance of the carrier, the judgment power of step 23 is advanced to step 24, and the casing 10 is lowered according to the predetermined depth Djet.
  • the descent of the casing 10 is performed by the depth following the suction excavation shown on the left, provided that the carrying object does not exist within the predetermined depth.
  • the remaining area of the exposed surface 2a that has not been excavated is excavated by air or a jet or the like by a predetermined depth Djet.
  • the entire exposed surface 2a is dug down by a predetermined depth Djet.
  • the loop of steps 21 to 23 is repeated again, and the exposed surface 2a is partially drilled for the next predetermined depth Djet.
  • step 22 when a carrier appears by suction excavation, the process proceeds from step 22 to step 26, and it is determined whether or not the current depth of the vertical hole 11 has reached the target depth Dtgt. It is. If a buried object appears before reaching the target depth Dtgt, it is an unforeseen carried object 5 '(step 28), so appropriate measures including interruption of work must be taken.
  • step 25 the drilling of the vertical hole 11 is advanced step by step at a predetermined depth of Djet. Then, when the depth of the vertical hole 11 reaches the target depth Dtgt, the work object 5 that has been placed and appears appears (FIG. 7 (d)). In this case, the excavation of the vertical hole 11 is completed through the affirmative determination in step 22, the affirmative determination in step 26, and step 27.
  • Step 3 it is judged whether the pipeline is newly established or the existing pipeline is updated (Step a6). This is a non-open laying process in which the existing pipeline is updated (step a8).
  • a predetermined treatment is performed on the work object 5 that appears at the bottom of the vertical hole formed by excavation.
  • an old service pipe for example, a lead pipe
  • a new service pipe for example, a polyethylene pipe, a hard chloride bull pipe, a stainless steel pipe, etc.
  • a non-open cutting method Update for example, reasoning is performed by an etastep.
  • Non-open cutting methods include, for example, the Extractor System ("ETUS Tractor System” is a registered trademark of TS'Sade), the Banana Method ("Banana Method” is a registered trademark of Hanex Road), and the bamboo Mall Method Or, the dream propulsion method can be mentioned.
  • Extractor System is a registered trademark of TS'Sade
  • Banana Method is a registered trademark of Hanex Road
  • Bamboo Mall Method Or the dream propulsion method can be mentioned.
  • the present invention can be applied not only to the renewal of the lead-in pipe, but also to the new construction of the lead-in pipe using the propulsion method, for example.
  • the MDP construction method is characterized by the laying of the buried pipe, which is a buried object, without excavation, which can greatly reduce the excavation area and the amount of soil, and depending on the road width, only one lane can be used. Construction becomes possible due to occupation.
  • the non-cutting method differs depending on whether a new pipeline is installed or when an existing pipeline is updated to a new one.
  • the propulsion method In the case of a new pipeline, the propulsion method is used, and in the case of a new pipeline, the propulsion method is installed.
  • existing pipes are renewed, buried pipes will be constructed by the pulling method.
  • FIG. 15 is a diagram for explaining a propulsion method for newly establishing a pipeline.
  • a new pipe is installed by installing a propulsion unit 50 in a shaft made by suction excavation (Fig. 15 (a)), and the propulsion unit 50 starts off with a carrying pipe of a predetermined length added (Fig. 15 ( b)), the propulsion method that goes into the residential land.
  • the propulsion position and direction of the carrier pipe are confirmed by the detector 51, and in the residential land, corrective bending propulsion is performed by swinging propulsion, and the meter box 52 is connected (Fig. 15 (c)).
  • FIG. 16 is a diagram for explaining a drawing method for updating an existing pipeline.
  • the existing pipe line is renewed by the pulling method.
  • this pulling method first, the tip of the carrier pipe (lead pipe) to be pulled (the farthest from the vertical shaft position, usually in the residential land) is cut near the meter box 52, for example. (Fig. 16 (a)), connect the renewal pipe 53 (usually polyethylene pipe) with a dedicated fitting ( Figure 16 (a)). After that, a wire 55 having a conical cone 54 is passed through the carrier pipe 60 (Fig. 16 (b)), and this wire 55 is pulled by a pulling winch 56 (Fig. 16 (c)), so that the existing carrier pipe Pull out 60 and lay pipes for renewal at the same time (Fig. 16 (d)).
  • This non-open cutting method excavates only the minimum area necessary for laying underground pipes, so construction is performed in narrow areas. [0081] [Return vertical hole (step 4)]
  • the backfilling of the vertical hole is a loading process that carries out the loading process (Step a9).
  • FIG. 17 is a diagram for explaining the vertical hole loading process in the case of using improved soil.
  • the vertical hole is backfilled while pulling up the casing surrounding the vertical hole (Fig. 17 (a)).
  • the vertical hole is carried back (Fig. 17 (c)) by improving the soil and sand generated during excavation of the vertical hole and reusing it (Fig. 17 (b)).
  • the backfilling soil is sufficiently compacted so that a predetermined compaction density can be ensured so that the road does not sink due to driving or the like.
  • Good quality soil such as sand that is compacted, is preferable and simple as the returning soil. From the standpoint of reducing residual soil treatment and contributing to environmental problems, improved soil with improved materials such as lime added to locally generated soil is effective, but it does not have to be improved soil and is limited to locally generated soil. Purchased soil may be used.
  • the unloading soil is rolled out at a layer thickness of about 20 to 30 cm per layer, and sufficiently compacted with a compacting machine to ensure a predetermined compaction density.
  • the boundary with the surrounding natural ground is constructed by pulling out the casing that prevents the collapse of the hole wall, so it is carefully compacted with a ramp, etc. After the construction, there are steps between the backfill and the surrounding natural ground. Prevent it from occurring.
  • Pavement plate restoration determines whether temporary restoration is necessary (Step al0) . If temporary restoration is necessary, this restoration (Step al 1) .If temporary restoration is necessary, provisional restoration is performed. This is the process of this restoration after (Step a12).
  • the lower layer roadbed 3, the upper layer roadbed 2 and the pavement plate 1 are sequentially restored by the same method as before.
  • the pavement plate piece 7 iron A cover plate may also be fitted back into the predetermined area. Restoration of the pavement surface (roadbed) ensures the specified pavement performance and eliminates the steps so as not to interfere with traffic such as driving cars, bicycles, and pedestrian traffic to ensure the specified flatness. To do.
  • the cut pavement plate if it is stored, it can be used for temporary restoration. In this case, only the portion cut by the force cutter is filled with mortar or grout material. In addition, if this restoration work cannot be performed immediately due to the weather, etc., iron plate curing will be carried out for the period until it can be constructed.
  • step 1 of the pavement plate 1 partial removal of the pavement plate 1 can be accurately performed with a simple operation. That is, the paving plate piece 7 is removed by raising the clamp 9 holding the paving plate piece 7. Since the side surface of the pavement plate piece 7 is provided with a taper distorted in the depth direction, dropping of the nipped pavement plate piece 7 is effectively regulated. Further, a special and complicated lifting tool for removing the paving plate piece 7 is not necessarily required, and the work can be efficiently performed using a general-purpose device having a simple configuration such as the clamp 9. In addition, the paving slab piece 7 can be removed as one piece without destroying it, and the generation of dust and noise due to the destruction can be prevented. Furthermore, when the pavement plate piece 7 is disposed of as a single piece of fast fault, it can be transported compactly on the road by storing it in a dedicated storage bag, which is advantageous for road disposal.
  • step 2 of the vertical hole 11 the ground exposed on the inner bottom of the casing 10 is excavated by suction prior to the descent of the casing 10 that plays a role of securing the earth retaining. Then, if the buried object does not appear by suction excavation, the casing 10 is lowered to the ground following the suction excavation. The lowering of the casing 10 is performed under the condition that the buried object does not appear.Therefore, even if the unexpected buried object 5 'is carried in the ground, it is assumed that it will be damaged or destroyed. Can be avoided.
  • earth and sand generated by excavation Is guarded by the casing 10 so as not to splash outside (especially when the excavation depth is shallow) and is immediately sucked through the hose 120. Therefore, since the work site is not soiled with earth and sand, it is environmentally superior. In addition, suction excavation can reduce dust and noise, thus reducing the impact on the work site. It should be noted that when reclaiming earth and sand (improved earth and sand, etc.) stored in a designated processing bag for re-loading the vertical hole 11, not only the environment but also the cost is excellent (transportation) No cost is required).
  • the present invention is not limited to this.
  • the present invention is necessary by actively controlling the operation of the clamp arm 9b so that the plurality of clamp arms 9b are displaced in the closing direction by hydraulic pressure. A sufficient engagement force may be ensured.
  • the work area S is circular, but the present invention is not limited to this, and may be any shape including a rectangular piece and the like. . (Embodiment of the second invention)
  • FIG. 18 is an explanatory diagram of the buried object laying method of the second invention.
  • the carried object laying method according to the second invention is carried out on the ground where the pavement plate 1 (road) such as Fasalt is not laid on the ground.
  • the On the roadbed 4 work object 5, which is a carrier to be constructed, is carried at a known target depth Dtgt.
  • a series of operations are performed in the order of excavation of vertical holes (Step 2), processing and processing of work objects (Step 3), and backfilling of vertical holes (Step 4).
  • Fig. 19 shows the construction procedure of the suspended object laying method according to the second aspect of the present invention.
  • the present invention can be applied to a method for laying a buried object such as a renewal or a new construction of a buried pipe or the like. This is a new laying construction method that satisfies the overall safety and environmental concerns.
  • FIG. 1 An explanatory view of the carrying pipe laying method of the first invention.
  • FIG.2 This is a diagram showing the construction procedure of the suspended pipe laying method for renewal or new construction of the carrier.
  • FIG. 3 is an explanatory diagram of a cutting process of a paving slab according to the first embodiment.
  • FIG. 4 is a configuration diagram of a circular cutter as an example.
  • FIG. 5 is a cross-sectional view of the cutting process of the paving slab according to the first embodiment.
  • FIG. 6 is an explanatory diagram of a pavement plate removing process according to the first embodiment.
  • FIG. 7 is an explanatory diagram of a pavement plate removing process according to a second embodiment.
  • FIG. 8 is an explanatory diagram of a pavement plate removing process according to a third embodiment.
  • FIG. 9 is an explanatory diagram of a pavement plate removing process according to a fourth embodiment.
  • FIG. 10 is an explanatory diagram of a pavement plate removing process according to a fifth embodiment.
  • FIG. 11 is an explanatory diagram of a pavement plate removing process according to a sixth embodiment.
  • FIG. 12 is an explanatory diagram of a vertical hole excavation process in the road bed.
  • FIG. 13 is a flowchart showing a flow of a vertical hole excavation process in the road bed.
  • FIG. 14 is an external perspective view of a casing.
  • FIG. 15 is an explanatory diagram of the propulsion method.
  • FIG. 16 is an explanatory diagram of the drawing method.
  • FIG. 17 is an explanatory diagram of a carrier return process.
  • FIG. 18 is an explanatory diagram of the carrying pipe laying method of the second invention.
  • FIG. 19 This is a diagram showing the construction procedure of the laying pipe laying method for renewing or newly constructing a carrier. Explanation of symbols 1 paving version

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Road Repair (AREA)
  • Earth Drilling (AREA)
  • Road Paving Structures (AREA)

Abstract

Le problème à résoudre dans le cadre de la présente invention est de renouveler ou d’installer un élément enterré, par exemple un tube de guidage d’entrée, en réduisant l’excavation afin de respecter à la fois l’usinabilité, la sécurité et l’environnement. La solution proposée réside dans un procédé de pose d’éléments enterrés pour renouveler ou installer un élément enterré comprenant une étape consistant à découper la circonférence extérieure d’une région prédéterminée sur une plaque de revêtement posée sur la surface du sol, de la surface de la plaque de revêtement à l’assiette de la route qui se trouve sous elle, afin de former une pièce de plaque de revêtement séparée des environs, puis retirer la pièce de plaque de revêtement ainsi découpée à partir de la plaque de revêtement, une étape consistant à réaliser un trou vertical en creusant par aspiration le sol exposé jusqu’au fond intérieur d’un cuvelage agencé dans la région prédéterminée à partir de laquelle la pièce de plaque de revêtement est retirée tout en confirmant la sortie de l’élément enterré avant que le cuvelage ne soit baissé dans le sol, une étape consistant à renouveler ou à installer l’élément enterré à l’aide d’un procédé de découpe à ciel non ouvert lorsque le sol est creusé par aspiration jusqu'à une profondeur cible, et une étape consistant à remblayer le trou vertical tout en tirant le cuvelage vers le haut.
PCT/JP2005/007230 2004-10-26 2005-04-14 Procede de pose d’elements enterres WO2006046324A1 (fr)

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JP2009257012A (ja) * 2008-04-18 2009-11-05 Shin Nihon Kogyo:Kk 舗装混合物配送システムおよび埋設物敷設工法
JP2009270263A (ja) * 2008-04-30 2009-11-19 Shin Nihon Kogyo:Kk 水道管の止水工事工法及び埋設物敷設工法

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JP2009270263A (ja) * 2008-04-30 2009-11-19 Shin Nihon Kogyo:Kk 水道管の止水工事工法及び埋設物敷設工法

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JP4466878B2 (ja) 2010-05-26
JP4863311B2 (ja) 2012-01-25

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