JP2012047003A - Drip receiving device of hydraulic solidifying liquid and construction method of column replaced with hydraulic solidifying liquid using the device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drip receiving device of hydraulic solidifying liquid and a construction method of a column replaced with hydraulic solidifying liquid, which prevent the hydraulic solidifying liquid attached to a drilling auger or remaining in a supply passage of the drilling auger from dripping down to the ground surface during redeployment of a construction apparatus to the next construction position after construction of a replaced column, so that the ground surface is prevented from being stained with the hydraulic solidifying liquid; and which also prevent a viscous dug sediment attached to a drilling claw from falling into a still uncured replaced column to deteriorate quality of the replaced column as a contaminant.SOLUTION: A drip receiving container 12 having an opening on the upper side is detachably suspended through suspension means 13 at a tip of a drilling auger 6.

Description

  The present invention relates to a hydraulic solidifying material liquid drooping receiving device and a hydraulic solidifying material liquid dripping receiving device used during the construction of a hydraulic solidifying material liquid replacing column (hereinafter also referred to as a replacement column). The present invention relates to a construction method of a hydraulic solidifying material liquid replacement column. In particular, when the construction of the hydraulic solidifying material liquid replacement column used for the foundation of a relatively light structure such as a detached house, a low-rise building, or a dirt slab is finished and the excavation auger is pulled up to the ground, It is suspended from the tip of the excavation auger and receives the hydraulic solidification liquid and excavation soil that hangs down from the excavation auger. The present invention relates to a hydraulic solidifying material liquid dripping receiving apparatus and a construction method of a hydraulic solidifying liquid replacement column using the apparatus.

The standard construction process of the construction method of the conventional hydraulic solidifying material liquid replacement column will be described with reference to FIGS. The excavation auger 6 used for the construction of this hydraulic solidification material liquid replacement column has a hydraulic solidification material liquid supply passage inside, and at least the excavation claw 7 and the discharge port of the hydraulic solidification material liquid ( (Not shown). The excavation auger 6 includes an excavation auger having a flat side surface as shown in FIG. 1 and a spiral screw auger as shown in FIG.
First, as shown in FIG. 5A, the excavation auger 6 is attached to the auger motor 3 of the construction apparatus 1, the excavation auger 6 is installed vertically along the leader 2, the center of the excavation claw 7 of the excavation auger 6 and the drilling position. Set them so that the (column center) matches.
Next, as shown in FIG. 5B, the excavation auger 6 is dug while rotating (forward or reverse). This is implemented by rotating the auger motor 3 and moving the slide plate 5 along the reader 2 downward.

  As shown in FIG. 5B, when the excavation reaches a predetermined depth, or from the vicinity of the predetermined depth, discharge from the discharge port of the hydraulic solidifying material liquid is started. When the excavation auger 6 reaches a predetermined depth, as shown in FIG. 5C, the excavation auger 1 is rotated (forward rotation or reverse rotation) or the hydraulic solidification material liquid 8 is discharged without rotating. When the excavation auger 6 is pulled up and the filling of the hydraulic solidifying material liquid 8 in the predetermined section is completed, the excavation auger 6 is further pulled up to complete the construction of the hydraulic solidifying material liquid replacement column. The predetermined section here is the replacement column length to be constructed, but may be a filling section of the hydraulic solidifying material liquid 8 in consideration of the bleeding amount of the hydraulic solidifying material liquid 8. The excavation auger 6 is pulled up by moving the slide plate 5 upward along the leader 2 to pull up the auger motor 3 together.

  At this time, the discharge amount (volume) of the hydraulic solidifying material liquid 8 is 1.0 to 1.5 times the hole volume generated under the excavation claw 7 by pulling up the excavation auger 6 per unit time. Adjust the pulling speed. This is because the hydraulic solidifying material liquid 8 is always filled with the excavation auger 6 so that no gap is formed below the excavation claw 7 by pulling up the excavation auger 6. If the discharge amount of the hydraulic solidifying material liquid 8 is small, suction is induced, and if suction occurs, hole wall collapse is induced in order to eliminate the suction. In some cases, the required column shape cannot be secured, and the quality of the replacement column is deteriorated.

When the excavating auger 6 is pulled up and the hydraulic solidifying material liquid 8 is discharged to finish filling the hydraulic solidifying material liquid 8 in a predetermined section, the discharging of the hydraulic solidifying material liquid is stopped and the excavating auger 6 is further moved to the ground. Pull up. FIG. 5D shows a state where the construction is completed. A replacement column is formed by solidifying the hydraulic solidifying material liquid 8 thus filled.
Such a method for constructing a replacement column is also disclosed in, for example, Patent Document 1 and Non-Patent Document 1.

JP2007-191857

Underground Continuous Wall Construction Method Design / Construction Handbook Japan Construction Mechanization Association Issued by Gihodo Publishing Co., Ltd. (pages 427-430)

However, the construction method of such a hydraulic solidifying material liquid replacement column has the following problems.
(1) When the construction of one hydraulic solidifying material liquid replacement column is completed, the construction apparatus 1 is moved to the next construction position. When the construction of the replacement column is completed, the excavation auger 6 is lifted to the ground. Accordingly, when the construction apparatus 1 is moved to the next construction position, not only the hydraulic solidifying material liquid leaking from the check valve at the discharge port of the excavating auger 6 but also the hydraulic solidifying material liquid adhering to the excavating auger 6 is grounded. There is a problem of dripping down and soiling the ground surface and solidifying. Since the earth and sand on the surface of this part are mixed with the solidified material of the hydraulic solidifying material liquid, there is also a problem that it is handled as industrial waste and the disposal cost is high.
(2) Further, in this construction method of the hydraulic solidifying material liquid replacement column, since the discharge port of the hydraulic solidifying material liquid is at the lower end surface of the excavating auger 6, the weight of the hydraulic solidifying material liquid is directly received. Another problem is that the hydraulic solidifying material liquid remaining in the supply passage of the excavation auger 6 leaks from the discharge port valve and drips down, and the ground surface is soiled when the construction apparatus is moved.

(3) In addition, the construction of the replacement column is completed, and the excavation auger 6 is still drilled in the excavation hole, while the excavation claw 7 fixed at the tip of the excavation auger 6 is pulled up to the ground with the viscous excavation sediment attached thereto. When over, the excavated sediment may fall into the replacement column where it has fallen and has not yet solidified. If the hydraulic solidification liquid is solidified without removing the excavated soil, there is a problem that the quality of the replacement column is deteriorated.
(4) By the way, conventionally, as a means for preventing the mud scattering of the excavation auger, the technique of the mud scattering prevention cover provided surrounding the excavation auger (for example, Japanese Utility Model Laid-Open No. 58-33592, Japanese Patent No. 2835188, Japanese Patent Laid-Open No. 2003-2003). No. 227287) is disclosed, but these can prevent the hydraulic solidifying material liquid and mud adhering to the excavation auger from being scattered around, but when the construction equipment is moved, they drop from the excavation auger It is not possible to prevent the ground surface from getting dirty by receiving hydraulic solidifying material liquid or mud.

  The present invention has been proposed to solve the above problems, and its purpose is to solidify the bottom surface of the excavation auger when the construction of the replacement column is completed and the construction device moves to the next construction position. Not only does hydraulic solidification liquid leak from the material discharge port, but also it can prevent the hydraulic solidification liquid adhering to the excavating auger from dripping onto the ground surface, so that the hydraulic solidification liquid can penetrate the ground surface. The hydraulic solidified material dripping can prevent the problem of degrading the quality of the replacement column by preventing the soiling and mixing the viscous drilling soil adhering to the drilling claw into the replacement column that has not fallen and solidified. An object of the present invention is to provide an apparatus and a construction method for a hydraulic solidifying material liquid replacement column.

  In order to solve the above-described problems, a hydraulic solidifying material liquid sag receiving device according to the present invention includes a sag receiving container that opens upward, and the sag receiving container attached to a construction device for a hydraulic solidifying material liquid replacement column. Suspending means for suspending from the tip of the excavation auger, and the hanging receptacle is detachable from the tip of the excavation auger via the suspending means.

  With this configuration, the drooping receptacle that opens upward can be removably suspended at the tip of the excavation auger attached to the construction device for the hydraulic solidifying material liquid replacement column. Therefore, when the construction of the hydraulic solidifying material liquid replacement column is completed and the excavation auger is lifted to the ground, the hanging receptacle that opens upward at the tip of the excavation auger is suspended by the hanging means, and thereafter The hydraulic solidifying material liquid and the excavated soil dripping from the excavation auger can be received without dropping into the ground surface or the excavation hole. This prevents the ground surface from being soiled by the hydraulic solidified material dripping from the excavating auger when the construction equipment is moved, and the excavated soil falls from the excavating auger into the borehole and does not solidify. It is also possible to prevent deterioration of the quality of the replacement column mixed in the material liquid and then solidified.

  Further, in the hydraulic solidifying material liquid droop receiving apparatus according to the present invention, the excavation auger includes a excavation claw at a tip portion, and the excavation claw has a hollow shape, and the hollow portion becomes a locking hole and droops. The receiving container is characterized in that it is hung by being detachably locked in the locking hole by a hanging means.

  With this configuration, the drooping device can not only detachably hang a hook member or the like by hooking it into the locking hole of the excavation claw, but also the excavation claw below the solidified material liquid discharge port of the excavation auger. Even if it is positioned, it has a hollow shape, so that the discharge of the hydraulic solidifying material liquid from the solidifying material liquid discharge port is less likely to be disturbed, and the check valve of the discharge port can be easily replaced.

The hydraulic solidifying material liquid replacement column construction method according to the present invention includes at least a drilling claw and a discharge port for the hydraulic solidifying material liquid at the tip of the excavating auger having a hydraulic solidifying material liquid supply passage therein. The excavation auger is excavated to a predetermined depth while rotating with a construction device equipped with an auger motor, and then the excavation auger is rotated or not rotated while discharging the hydraulic solidification liquid from the discharge port. In the construction of the hydraulic solidifying material liquid replacement column that pulls up and fills the predetermined section of the excavation portion with the hydraulic solidifying material liquid,
When the excavation auger is lifted to the ground after the construction is completed, a droop receiving container that opens upward is detachably suspended at the tip of the excavation auger via a suspending means.

With this configuration, when the construction of one hydraulic solidifying material liquid replacement column is completed and the excavation auger is pulled up to the ground, a drooping receptacle opening upward is suspended from the tip of the excavation auger. Therefore, when moving the construction equipment to the construction position of the next hydraulic solidifying material liquid replacement column, even if the hydraulic solidifying material liquid drips from the excavation auger, the drooping container will receive it, so it will be scattered on the ground surface. Can be constructed without getting dirty. Thereby, the problem of the industrial waste disposal of the earth and sand which the hydraulic solidification material liquid scattered on the ground surface does not occur.
When the replacement column is completed, the excavation auger (mainly clayey soil) is lifted to the ground with the excavation auger attached to the excavation auger. Since the receiving vessel receives it, it can be prevented from falling into the hydraulic solidification material liquid (replacement column) in which the excavation hole is not yet solidified, so that a high-quality replacement column can be constructed (built).

According to the construction method of the hydraulic solidifying material liquid dripping device and the hydraulic solidifying material liquid replacement column of the present invention, the following effects can be obtained.
(1) The hydraulic solidification material liquid that adheres to the excavation auger or remains in the supply passage of the excavation auger is prevented from dripping onto the ground surface, so that the hydraulic solidification material liquid contaminates the ground surface. Can be prevented.
(2) Since the hydraulic solidification material liquid and excavated earth and sand do not hang down and become soiled on the ground surface, the industrial waste treatment of the portion is eliminated, and the industrial waste disposal cost can be reduced.
(3) When the excavation auger pulled up to the ground is on the excavation hole, the excavation soil (mainly viscous soil) adhering to the excavation auger (especially the excavation claw) does not solidify in the excavation hole yet. Column) can be prevented from falling into the column, and deterioration of the quality of the replacement column can be avoided.
(4) The hydraulic solidifying material liquid collected in the drooping device can be reused by removing the mixed soil mass, and can be easily discarded by collecting it in a disposal container.

  The present invention has been briefly described above. Further, the best mode for carrying out the invention described below will be described in detail with reference to the accompanying drawings.

It is a perspective view which shows the dripping receptacle apparatus of the hydraulic solidification material liquid by embodiment of this invention. It is a perspective view which shows the modification of the embodiment shown in FIG. It is a perspective view which shows the dripping receptacle apparatus of the hydraulic solidification material liquid by other embodiment of this invention. It is a perspective view which shows the dripping receptacle apparatus of the hydraulic solidification material liquid by other embodiment of this invention. It is explanatory drawing which shows the construction method of the conventional substitution column in process order (a) (b) (c) (d).

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a hydraulic solidifying material liquid dripping device according to an embodiment of the present invention.

  The hydraulic solidifying material liquid sag receiving device 11 shown in FIG. 1 has a configuration in which a sag receiving container 12 that opens upward is detachably suspended from the tip of the excavation auger 6 via a suspending means 13. It has become. In FIG. 1, the excavation auger 6 has a flat side surface. In addition, the drooping container 12 is shown as a rectangular container 19 in this example. The rectangular container 19 is formed by connecting four side plates 19b to a rectangular bottom plate 19a, and each side plate 19b expands upward.

  The suspending means 13 is mainly composed of a hook member 16 and a wire rope 18. Specifically, a ring member 17 is provided at the lower end of the hook member 16, and each end of an equal length wire rope 18 is fixed at equal intervals at four locations on the outer periphery of the ring member 17. The other end of each of the four wire ropes 18 is fastened (attached) to an ear member 20 attached to the upper end of the corner portion of the rectangular container 19. The ring member 17 may be rotatably provided on the hook member 16 or may be fixedly attached. However, even if an external force is applied to the rectangular container 19 when the rotatable member 17 is rotated, the ring member 17 is rectangular via each wire rope 18. Since the container 19 can rotate, this rotational force is not transmitted to the excavation auger 6, which is preferable. A chain may be used instead of the wire rope.

On the other hand, a drilling claw 7 is provided at the tip of the drilling auger 6. The excavation claw 7 has a flat plate-like shape, and a locking hole 14 is formed through the flat plate. The lower portion of the locking hole 14 has a V-shape 15. . The sharpest lowermost part (lowest part) of the V-shaped 15 of the locking hole 14 is formed so as to be positioned on a substantially center line of the excavation auger 6.
Therefore, in the drooping receiving device 11 for the hydraulic solidifying material liquid, the drooping receiving container 12 (rectangular container 19) hooks the hook member 16 into the locking hole 14 of the excavating claw 7, and as shown in FIG. 6 can be hung on the tip of 6. At this time, the lengths of the four wire ropes 18 are equal to each other, and the hook member 16 is positioned substantially on the center line of the excavation auger 6 by the V-shaped 15 locking hole 14. It is suspended at a position centered on the excavation auger in the state.
If the locking hole 14 is formed in the excavation claw 7 to have a hollow shape, the locking hole 14 can be used for locking the hook member 16 of the drooping receiving device 11, and the solidified material liquid on the lower end surface of the excavation auger 6 It is less likely to obstruct the discharge of the hydraulic solidifying material liquid from the discharge port, and the check valve of the discharge port can be easily replaced.

  Thus, the hydraulic solidifying material liquid droop receiving device 11 has the hook member 16 engaged with the locking hole of the excavating claw 7 immediately after the construction of the hydraulic solidifying material liquid replacement column is completed and the excavating auger 6 is pulled up to the ground. 14, the rectangular container 19 can be suspended from the tip of the excavation auger 6, whereby the hydraulic solidified liquid or excavated earth and sand dripping or falling from the excavation auger 6 can be retained in the rectangular container 19. I can take it. For this reason, it is possible to prevent the drooping hydraulic solidification material liquid from soiling and solidifying the ground surface, and excavation earth and sand adhering to the excavation auger 6 while the excavation auger 6 is on the excavation hole. Can be prevented from falling into the excavation hole and mixing into the replacement column (hydraulic solidification material liquid) that has not yet solidified.

FIG. 2 is a perspective view showing a modification of the embodiment shown in FIG.
The hydraulic solidifying material liquid droop receiving device 11 shown in FIG. 2 has the hook member 16 shown in FIG. 1 as a suspension ring 16 a, and a locking member 28 is fixed to the excavation claw 7 at the tip of the excavation auger 6. 16a is engaged with the locking member 28 and suspended, and the other components are the same as those of the embodiment shown in FIG. The detailed description of is omitted.
Although FIG. 2 shows the case where the locking member 28 is provided on both side surfaces of the excavation claw 7, the locking member 28 may be provided only on one side surface of the excavation claw 7.
According to this configuration, the locking member 28 can be attached to the excavation claw 7 later.

  FIG. 3 is a perspective view of a hydraulic solidifying material liquid droop receiving apparatus according to another embodiment of the present invention. In the hydraulic solidifying material liquid droop receiving apparatus 11A shown in FIG. 3, the droop receiving container 12 is a wok pan-shaped container 21, and the other components are the same as those in the above embodiment, and the same components are the same. A description will be given with reference numerals.

  The hydraulic solidifying material liquid sag receiving device 11A shown in FIG. 3 has a configuration in which a sag receiving container 12 that opens upward is detachably suspended from the tip of the excavation auger 6 via a suspending means 13. Yes, a hook member 16, a ring member 17 rotatably attached to the lower end of the hook member 16, and three equal lengths with one end fixed at equal intervals at three locations on the outer periphery of the ring member 17. Wire rope 18 and a wok pan-shaped container 21 as a droop receiving container 12 supported at the other end of each wire rope 18. The other end of each wire rope 18 is fixed to the ear member 20 attached to the inner periphery of the upper end portion of the wok-type container 21 via the attachment member 27 at equal intervals. In FIG. 3, the excavation auger 6 is a spiral screw auger.

  For this reason, in the hydraulic solidifying material liquid sag receiving device 11A, the wok pan-shaped container 21 hooks the hook member 16 into the locking hole 14 of the excavation claw 7, and as shown in FIG. Can be hung from the tip. At this time, the lengths of the three wire ropes 18 are equal to each other, and the hook member 16 is positioned substantially on the center line of the excavation auger 6 by the V-shaped 15 locking hole 14. It is suspended at a position centered on the excavating auger in a substantially horizontal state.

  Therefore, the hydraulic solidifying material liquid dripping receiver 11 </ b> A completes the construction of the hydraulic solidifying material liquid replacement column, and immediately after the excavation auger 6 is pulled up to the ground, the hook member 16 is engaged with the locking hole 14 of the excavation claw 7. By hooking onto the drilling auger 6, the wok pan-shaped container 21 can be suspended from the tip of the excavating auger 6, thereby allowing the hydraulic solidified liquid or excavated earth and sand dripping or falling from the excavating auger 6 to fall into the wok. It can be received by the container 21 of the mold. For this reason, it is possible to prevent the drooping hydraulic solidification material liquid from soiling and solidifying the ground surface, and excavation earth and sand adhering to the excavation auger 6 while the excavation auger 6 is on the excavation hole. Can be prevented from falling into the excavation hole and mixing into the replacement column (hydraulic solidification material liquid) that has not yet solidified.

  FIG. 4 is a perspective view of a hydraulic solidifying material liquid droop receiving apparatus showing still another embodiment of the present invention. The hydraulic solidifying material liquid sag receiving device 11B shown in FIG. 4 is different from the above embodiment in the structure of the suspension means 13, and the others are the same as in the above embodiment. Components will be described with the same reference numerals.

The hydraulic solidifying material liquid sag receiving device 11B shown in FIG. 4 has a configuration in which a sag receiving container 12 that opens upward is detachably suspended from the tip of the excavation auger 6 via a suspending means 13. A horizontal bar-like hanging rod 22 having a U-shaped portion 22a near the center and an L-shaped portion 22b bent at one end, and U-shaped portions 23a and 24a near the center. The suspension rods 22 and 24 are substantially U-shaped and suspended at two locations of the suspension rod 22, and a rectangular container 25 attached to the lower ends of the suspension rods 23 and 24. The horizontal rod-like hanging rod 22 and the substantially U-shaped hanging rods 23 and 24 constitute the hanging means 13.
The suspension bar 22 has a U-shaped portion 22 a locked and supported in the locking hole 14 of the excavation claw 7. The suspension rods 23 and 24 are locked and supported by two U-shaped portions 23a and 24a formed at the center of the suspension rods 23, specifically at two positions equidistant from the U-shaped portion 22a. A collar 26 serving as a mark for balancing the weight of the rectangular container 25 is attached to a portion of the suspension rod 22 that supports the suspension rod 24.

  In such a hydraulic solidifying material liquid dripping receiver 11B, first, the suspension rod 22 is passed through the locking hole 14 formed in the excavation claw 7 of the excavation auger 6 and the U-shaped portion 22a is engaged with the bottom of the V-shaped 15. Stop. Further, the U-shaped portions 23a and 24a of the hanging rods 23 and 24 attached to the rectangular container 25 are supported on the hanging rod 22 thus locked. In this case, the rectangular container 25 is moved while holding the L-shaped part 22 b to suppress the excavation auger 6 from shaking so that the U-shaped part 24 a is supported on the collar 26. Thereby, the rectangular container 25 can be horizontally supported with respect to the hanging rod 22 with good balance.

Therefore, in the hydraulic solidifying material liquid droop receiving device 11B, immediately after the construction of the hydraulic solidifying material liquid replacement column is finished and the excavation auger 6 is pulled up to the ground, the suspension rod 22 is engaged with the locking hole 14 of the excavation claw 7. The rectangular container 25 can be suspended from the tip of the excavation auger 6 by suspending the suspension rods 23 and 24 from the suspension bar 22 passed through the locking hole 14 as described above.
As a result, the hydraulic solidified material liquid or the excavated earth and sand that hangs down or falls from the excavation auger 6 can be received by the rectangular container 25. For this reason, it is possible to prevent the drooping hydraulic solidification material liquid from soiling and solidifying the ground surface, and excavation earth and sand adhering to the excavation auger 6 while the excavation auger 6 is on the excavation hole. Can be prevented from falling into the excavation hole and mixing into the replacement column (hydraulic solidification material liquid) that has not yet solidified.

Next, a construction method of the hydraulic solidifying material liquid replacement column according to the embodiment of the present invention will be described.
The construction method of the hydraulic solidifying material liquid replacement column of the present invention comprises at least the excavation claw and the discharge port of the hydraulic solidifying material liquid at the tip of the excavating auger having a hydraulic solidifying material liquid supply passage inside. The excavation auger is excavated to a predetermined depth while rotating with a construction device equipped with an auger motor, and then the excavating auger is pulled up while rotating or not rotating while excavating the hydraulic solidification liquid from the discharge port, and excavating. In the construction of the hydraulic solidifying material liquid replacement column that fills the predetermined section of the part with the hydraulic solidifying material liquid,
Immediately after the construction is finished and the excavation auger is lifted to the ground, a hydraulic solidifying material liquid droop receiving device is suspended from the tip of the excavation auger 6.

Specifically, the construction of the hydraulic solidifying material liquid replacement column is performed by the same construction method as that shown in FIGS. 5 (a) to 5 (d). 5A to 5D, first, as shown in FIG. 5A, the excavation auger 6 is attached to the auger motor 3 of the construction apparatus 1, and the excavation auger 6 is installed vertically along the leader 2, Set so that the center of the excavation claw 7 of the excavation auger 6 and the drilling position (column center) coincide.
Next, as shown in FIG. 5B, the excavation auger 6 is dug while rotating (forward or reverse). This is implemented by rotating the auger motor 3 and moving the slide plate 5 along the reader 2 downward.

  Further, as shown in FIG. 5B, when the excavation reaches a predetermined depth, or from the vicinity of the predetermined depth, discharge from the discharge port of the hydraulic solidifying material liquid is started. When the excavation auger 6 reaches a predetermined depth, as shown in FIG. 5C, the excavation auger 6 is rotated (forward rotation or reverse rotation) or the hydraulic solidification material liquid 8 is discharged without rotating. When the excavation auger 6 is lifted up and the filling of the hydraulic solidifying material liquid 8 in the predetermined section is completed, the discharge of the hydraulic solidification material liquid is stopped, and the excavation auger 6 is further pulled up to the ground. FIG. 5D shows a state where the construction is completed.

  When the construction of the hydraulic solidifying material liquid replacement column is completed in this way and the excavation auger 6 is pulled up to the ground, immediately after that, the above-mentioned hydraulic solidifying material liquid dripping device is attached to the tip of the excavation auger 6. 11, 11A, 11B are suspended and the construction apparatus 1 is moved to the next construction position. After moving to the next construction position, the hydraulic solidifying material liquid dripping receivers 11, 11A, 11B are removed from the tip of the excavating auger 6, and again hydraulic by the construction method shown in FIGS. 5 (a) to (d). Build a solidified liquid replacement column.

  The hydraulic solidifying material liquid sag receiving device 11, 11A, 11B shown in FIGS. 1, 2, 3, and 4 is a sag receiving container 12 that opens upward, and the sag receiving container. And suspending means 13 for detachably suspending 12 from the tip of the excavation auger 6. The hanging receptacle 12 and the suspension means 13 have been described in detail in the embodiment shown in FIGS.

  Therefore, according to the construction method of the hydraulic solidifying material liquid replacement column of the present invention, the construction of one replacement column is finished, and the drooping receptacle 12 is suspended from the tip of the excavation auger 6 pulled up to the ground. Since it is suspended by the lowering means 13, when the construction of one replacement column is completed and the construction device 1 is moved to the next construction position, the hydraulic solidifying material liquid drips from the excavation auger 6. However, since the drooping receiving container 12 receives it, the ground surface is soiled with the dripping hydraulic solidifying material liquid, and it is possible to prevent this from solidifying. Further, while the excavation auger 6 is on the excavation hole, excavation earth and sand adhering to the excavation auger 6 (particularly, highly viscous excavation earth and sand adhering to the excavation claw 7 of the excavation auger 6) is not replaced. It can be prevented from falling into the column (hydraulic solidifying material liquid), and this makes it possible to build a high-quality replacement column.

  In the present invention, when the construction of the hydraulic solidifying material liquid replacement column is completed and the excavation auger is lifted to the ground and then moved to the next construction position, the hydraulic solidification material liquid dripped from the excavation auger 6 or excavated. The dripping container 12 receives the fall of the excavated earth and sand adhering to the auger 6 and has the effect of preventing the soil surface from being soiled or deteriorating the quality of the replacement column. Useful for construction.

DESCRIPTION OF SYMBOLS 1 Construction apparatus 6 Excavation auger 7 Excavation claw 8 Hydraulic solidification material liquid 11, 11A, 11B Hydraulic solidification material liquid droop receiving apparatus 12 Dripping container 13 Suspension means 14 Locking hole 15 V-shaped 16 Hook member 16a Suspension Ring 17 Ring member 18 Wire rope 19, 25 Rectangular container 20 Ear member 21 Wok-shaped container 22 Hanging rod 23, 24 Hanging rod 28 Locking member

Claims (3)

  A drooping receptacle that opens upward, and a suspension means that suspends the drooping receptacle on the tip of an excavation auger attached to the construction device of the hydraulic solidifying material liquid replacement column, A hydraulic solidifying material liquid sag receiving device characterized in that it can be attached to and detached from the tip of the excavation auger via a suspension means.   The excavation auger has an excavation claw at the tip, the excavation claw has a hollow shape, and the hollow portion becomes a locking hole, and the hanging receptacle is removably locked to the locking hole by a hanging means. The hydraulic solidifying material liquid drooping receiving device according to claim 1, wherein the hydraulic solidifying material liquid hanging device is suspended. At least the excavation claw and the discharge port of the hydraulic solidification material liquid are provided at the tip of the excavation auger having a hydraulic solidification material liquid supply passage inside, and the excavation auger is rotated by a construction apparatus equipped with an auger motor while predetermined. Water that is excavated to a depth, and then is pulled up while rotating or not rotating the excavating auger while discharging the hydraulic solidifying material liquid from the discharge port, and filling the predetermined section of the excavating portion with the hydraulic solidifying material liquid In the construction of the hard solidifying material liquid replacement column,
When the excavation auger is lifted to the ground after the construction is completed, a hydraulic solidifying material liquid is characterized in that a droop receiving container that opens upward is removably suspended at the tip of the excavation auger via a suspension means. Replacement column construction method.

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