KR20040032272A - Multi-shaft ouger apparatus for construct of cut-off wall and costruction method of cut-off wall using the multi-shaft ouger apparatus - Google Patents

Abstract

PURPOSE: A multi-shaft excavator for constructing a cutoff wall is provided to heighten the water-stopping effect by delaying the penetration of water toward a cutoff wall. CONSTITUTION: The multi-shaft excavator(100) for constructing a cutoff wall comprises: triple-shaft excavation rods(102a,102b,102c) provided with a screw wing(103) to move forward and backward and an impeller blade(104) to mix stir and slurry; excavation heads(105a,105b,105c) provided with a discharge hole connected to an injection hole formed longitudinally along the center of the excavation rods(102a,102b,102c) and installed on the front of the excavation rods(102a,102b,102c) to excavate the ground; a driving unit(106) suspended on a lead master(108) of a crane(107) to rotate the excavation rods(102a,102b,102c); and a slurry distributing unit(111) installed among the driving unit(106) and the excavation rods(102a,102b,102c) to receive the slurry mixed with water and solidifier, then to inject through injection holes formed on the excavation rods(102a,102b,102c).

Description

MULTI-SHAFT OUGER APPARATUS FOR CONSTRUCT OF CUT-OFF WALL AND COSTRUCTION METHOD OF CUT-OFF WALL USING THE MULTI-SHAFT OUGER APPARATUS}

The present invention relates to a multi-axis excavator and a method for constructing a barrier wall using the multi-axis excavator, and in particular, a multi-axis excavator is used to excavate the ground without the excavation residue and to thicken the construction wall so as to delay the penetration time of water. It relates to a multi-axial excavator for the order wall construction and a method for constructing the order wall using the multi-axis excavator.

Conventional excavation methods of this kind are disclosed in Japanese Laid-Open Patent Publication No. Hei 11-131469 (published date; May 18, 1999).

In the multi-axis excavator 1 disclosed in Japanese Laid-Open Patent Publication No. 11-131469, as shown in Figs. 1 to 4, the multi-axis excavator 1 detects the rotational load of Oga on the reducer 5 of the multi-axis excavator 1. The rotation system 6 and the ammeter 7 which are means are connected. In detail, the ammeter which measures the rotation speed of the reducer 5, and converts it into an electrical signal is connected to the reducer 5, and the ammeter which grasps the electric signal converted by the rotation system 6 as a current value. (7) is connected to the tachometer. Moreover, the alarm buzzer 8 which outputs an alarm sound so that the detection result in a detection means may be installed in the driver's seat of the multi-axis excavator 1.

In addition, the multi-axis excavator 1 is vertically connected at a vertical connection portion (not shown) of the first and second lower organs 31 and 32. Then, the first and second organs 31 and 32 are horizontally connected by two horizontal connecting units 33, respectively.

Moreover, the 1st oga 31 is formed in the rod 31a used as a base and the lower end part of this rod 31a, and the bit 31b which excavates the bottom of the ground 34 by a blade by rotating the rod 31a. And a predetermined distance between the rod 31c and the rod 31a, which are installed at a predetermined distance to the rod 31a and serve to push up the excavated gravel from the bottom to the top, thereby rotating the rod 31a. It consists of the stirring blade 31d which stirs the excavated earth and sand in the original position. Moreover, the air discharge hole 31e is formed in the said moving blade 31c.

The diameter of the moving blade 31c of the lower 1st oga 31 is larger than the diameter of the moving blade 32c of the 2nd oga 32 of upper part. In this way, when the multiaxial oga (3) having the moving blade (31c) is rotated, the excavated gravel around the first oga (31) is pushed from the bottom to the top by a strong force to excavate the ground (34) when excavating the ground (34). It acts to delay the settling of gravel. In addition, although the diameter of the moving blade 31c in the same 1st oval 31 is made the same here, it is the structure which made the diameter of the lower moving blade 31c larger than the diameter of the upper moving blade 32c. In addition, you may make the diameter of the moving blade 31c the same as the diameter of the moving blade 32c of the 2nd oval 32 in the 1st oga 31. FIG.

And although the length of the stirrer 32d provided in the rod 32a of the 2nd oga 32 is shorter than the stirrer 31d provided in the rod 31a of the 1st oga 31, the stirrer of the same length is provided. You may provide 32d.

However, the conventional Oga excavator configured as described above delays the sedimentation of the excavated gravel and the excavated soil in constructing the wall continuously at a deep depth in the collapsible sand gravel layer, and generates excessive pressure at the bottom of the excavation hole. It prevents the overloading of the multi-axis excavator and prevents the overloading of the multi-axis excavator, and ensures the vertical accuracy, so that the wall can be continuously constructed smoothly, but the rods in the center have shorter lengths (H) than the rods on both sides. When the ground 34 is excavated by the excavating heads respectively installed at the front end portions of the excavated portion, as shown in FIG. 3, an unexcavated portion 35 is generated at the lower portion of the excavated portion, and the water passes through the unexcaved portion 35. There was such a problem that it penetrated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a multi-axial excavator for an order wall construction which can excavate the ground so that there is no excavated portion using a multi-axis excavator, and a method for constructing a water barrier wall using the multi-axis excavator. There is.

Another object of the present invention is to provide a multi-axis excavator for the construction of the order wall which can be thickly constructed to delay the penetration time of water, and a method for constructing the order wall using the multi-axis excavator.

In order to achieve the above object, the multi-axial excavator for construction of the order wall according to the present invention is attached to the outer circumferential surface, and the three-dimensional excavating rod installed on the outer circumferential surface alternately so that the screw blade for moving forward and backward and the stirring blade for mixing the soil and slurry do not interfere with each other. And an excavation head which is formed in the center of the discharge hole communicating with the injection hole formed in the longitudinal direction along the center of the excavating rod so as to pass through the slurry or the compressed air, respectively installed at the distal end of the excavating rod, and excavating the ground; The drive side suspends the leader master of the crane in the upper part of the excavating rod and rotates to drive the excavating rod, and receives the slurry mixed with the water and the solidifying agent which is installed between the drive unit and the excavating rod. With a slurry distribution unit for injecting into the injection hole formed in the excavating rod of In the multi-axis excavator, a lower diameter excavation head is installed at the lower portion of the excavating head provided at the tip of the center excavating rod so that the two excavating heads do not contact each other and are in line with the lower end faces of the both excavating heads. It is characterized by that.

In addition, the order wall construction method using the multi-axis excavator for the wall construction according to the present invention is located on the ground to be excavated excavating heads respectively installed on the tip of the excavating rod, and the excavation while excavating by the excavating head by rotating the drive unit forward Soil and gravel are mixed with agitation blades mixed with water and solidifying material supplied from a slurry dispensing unit, and filled into excavation holes to form a first element, and the driving unit is rotated in reverse to rotate the excavating rod. The excavated head from the first element to be positioned 200 mm-350 mm away from the edge digging hole of the first element, and the drive unit is rotated forward to excavate the ground by the excavation head. Gravel together with the solidifying agent mixture mixed with water and solidifying agent supplied from the slurry distribution unit Mix by half-wing to fill the excavation hole to form a second element, and excavate from the second element before the mixture of soil, gravel and hardener in the first and second elements hardens so as to form a thick wall. The rod is pulled out to position the excavation head on the right excavation hole of the first element, while the excavation head is positioned on the left excavation hole of the second element, and the small end portion of the excavation rod is installed on the unexcavated undeveloped portion. The excavated soil and gravel were excavated by the excavation head according to the forward rotation of the drive unit by positioning the excavation head having a diameter, and the stirring blade together with the solidifying agent mixture mixed with the water and the solidifying agent supplied from the slurry distribution unit. By mixing to fill the excavation hole to form a third element.

1 is a side view of a conventional multi-axis excavator,

2 is a front view schematically showing the excavator of FIG.

3 is an enlarged view of the excavator of FIG. 2;

4 is a longitudinal sectional view showing a state in which a ground wall is constructed by excavating the ground by a conventional multi-axis excavator;

Figure 5 is a side view of the multi-axis excavator for the construction of the order wall according to an embodiment of the present invention,

Figure 6 is a front view of the excavation portion of the multi-axis excavator for the construction wall order according to an embodiment of the present invention,

FIG. 7 is an enlarged front view of the excavation head of the multi-axis excavator for the construction of the barrier wall according to the embodiment of the present invention in FIG. 6;

8 is a view for explaining a method of excavation using a multi-axis excavator for the construction of the order wall according to an embodiment of the present invention,

FIG. 9 is a cross-sectional view overlapping the excavation method of FIG. 8;

10 is a longitudinal sectional view showing a state in which a ground wall is constructed by excavating the ground by an excavation head for a wall construction according to an embodiment of the present invention;

FIG. 11 is a cross-sectional view of FIG. 10.

<Description of the symbols for the main parts of the drawings>

102a, 102b, 102c: Excavation rod 103: Screw wing

104: Stirring 105a.105b, 105c, 105d: Excavation head

107: crane 106: drive unit

111: Distribution Unit 109: Doure

109a: wire rope

It will be described below in detail with reference to the accompanying drawings, a multi-axis excavator for a wall construction according to an embodiment of the present invention according to an embodiment of the present invention.

FIG. 5 is a side view of a multi-axis excavator for wall construction according to an embodiment of the present invention, FIG. 6 is a view of an excavation part of the multi-axis excavator for construction of a wall construction according to an embodiment of the present invention, and FIG. 7 is FIG. In FIG. 8 is an enlarged front view showing the excavation head of the multi-axis excavator for the wall construction according to an embodiment of the present invention, Figure 8 illustrates a method for excavation using a multi-axis excavator for the construction of the wall construction according to an embodiment of the present invention 9 is a cross-sectional view illustrating the excavation method of FIG. 8 by overlapping, and FIG. 10 is a view showing a state in which a ground wall is constructed by excavating the ground by an excavating head for the construction of the wall wall according to an embodiment of the present invention. It is a longitudinal cross-sectional view, and FIG. 11 is a cross-sectional view of FIG.

5 to 11 as a multi-axis excavator 100 for the construction of the order wall construction according to an embodiment of the present invention is attached to the outer peripheral surface to move forward and backward screw blade 103 and the stirring blade for mixing the soil and slurry ( Triaxial excavation rods 102a, 102b and 102c alternately installed on the outer circumferential surface of the excavation 104 so as not to interfere with each other, and longitudinally along the center of the excavation rods 102a, 102b and 102c to allow slurry or compressed air to pass therethrough. Excavation heads 105a, 105b, which are formed in the center of the discharge hole (not shown) in communication with the formed injection hole (not shown), respectively, are provided at the front end portions of the excavating rods 102a, 102b, and 102c to excavate the ground. 105c and a driving unit suspendably suspended on the leader master 108 of the crane 107 above the excavating rods 102a, 102b and 102c to rotate the excavating rods 102a, 102b and 102c. 106, the drive unit 106 and the excavating rod (102a, 1) Slurry distribution to receive the slurry mixed with water and solidifying agent which is installed between 02b and 102c and introduced through a hose (not shown) and injected into injection holes formed in the excavating rods 102a, 102b and 102c on the pair of side sides. The unit 111 is comprised.

The lower portion of the excavating head 105b provided at the tip of the excavating rod 102b among the excavating rods 102a, 102b, and 102c does not contact the two excavating heads 105a and 105c, and the both excavating heads ( Excavation head 105d of small diameter is provided so that it may become in line with the lower end surface of 105a, 105c.

In the drawing, reference numeral 109 denotes a base layer which guides the wire rope 109a to elevate and drive the drive unit 106 according to the winding and rewinding of the wire rope 109a, 122a, 122b, 122c, 124a and 124b124c are excavation holes, respectively.

Next, a method of excavating the ground will be described while explaining the operation and effect of the multi-axis excavator according to the embodiment of the present invention configured as described above.

First, as shown in detail in FIGS. 8 and 9, the excavation parts 105 of the multi-axis excavator 100 of the present invention, that is, the excavation heads 105a, 105d, and 105c respectively provided at the distal ends of the excavating rods 102a, 102b, and 102c are respectively provided. After positioning on the ground 90 to be excavated and then rotating the driving unit 106 forward, the excavating rods 102a, 102b and 102c rotate at the tip of the excavating rods 102a, 102b and 102c. Excavating heads 105a, 105b, 105d, and 105c respectively installed are rotated to excavate the ground 90.

Most of the soil and gravel (or small stones) excavated during the excavation of the ground 90 are mixed with water and a hardener in the slurry distribution unit 111 to be formed inside the excavating rods 102a, 102b, and 102c. The slurry is mixed again by the stirring blade 104 together with the slurry mixed with the water and the solidifying agent supplied in the first element 122 excavated through the through hole (not shown) and positioned in the first element 122. Part of the excavated soil and gravel (or small stones) during the excavation is moved upwards according to the rotation of the screw blade 103 is discharged to the outside.

Next, the excavating rods 102a, 102b and 102c are pulled out of the first element 122 by rotating the drive unit 106 in reverse, and then into the right excavation hole 122c of the first element 122. Position the excavation head (105c) from 200mm-350mm apart, and by rotating the drive unit 106 forward as described above, the excavating rod (102a, 102b, 102c) as the forward rotation of the excavating rod (102a, Excavation heads 105a, 105b, 105d, and 105c installed in 102b and 102c are rotated to excavate the ground 90 again (if the order wall is constructed from right to left, the left excavation of the first element 122). Position the right side of the excavation head 105a away from the hole 122a 200 mm-350 mm).

Most of the soil and gravel (or small stones) excavated during the excavation of the ground 90 are mixed with water and a hardener in the slurry distribution unit 111 to be formed inside the excavating rods 102a, 102b, and 102c. It is mixed again by the stirring blade 104 together with the slurry mixed with the water and the solidifying agent supplied in the second element 124 excavated through the through-hole not shown, and is located in the second element 124.

The excavating rods 102a, 102b and 102c are pulled from the second element 124 before the mixture of the soil, gravel and slurry in the first and second elements 122 and 124 is cured. Positioning the excavation head 105c on the excavation hole 122c and simultaneously positioning the excavation head 105a on the excavation hole 124a of the second element 124 results in the unexplored undeveloped portion 90a. A small diameter excavation head 105d provided at the tip end of the excavating rod 102b is positioned.

As described above, the excavation rod 102a, by rotating the drive unit 106 as described above in a state where the excavation head 105d having a small diameter is placed on the unimproved portion 90a as described above (see FIG. 9). As the 102b and 102c rotates forward, the excavation heads 105a, 105b, 105d, and 105c installed at the front end portions of the excavating rods 102a, 102b and 102c rotate, respectively, and the unimproved portion 90a of the ground 90 is excavated. do.

At this time, most of the excavated soil and gravel (or small stones) excavated while excavating the unimproved portion 90a of the ground 90 is mixed with water and a hardener in the slurry dispensing unit 111, and the excavating rods 102a and 102b. The first element 122 is mixed again by the stirring blade 104 together with the liquid solidifying agent mixture supplied into the third element 126 excavated through a through hole (not shown) formed inside the 102c. ), A mixture of soil, gravel, and hardeners filled in the excavation hole 122c of the excavation hole 122c and the excavation hole 124a of the second element 124 is intermittently provided on the outer peripheral surface of the excavating rods 102a, 102b, 102c. It is filled and cured in the third element 126 while being stirred and mixed again with the solidifying agent mixture (mixed with water and the solidifying agent) supplied through the excavating rods 102a, 102b, and 102c by the stirring blade 104. A lining wall is formed in the ground 90.

In order to maximize the strength and the order effect of the order wall formed in this way, the gap between the right excavation hole 122c of the first element 122 and the left cutting hole 124a of the second element 124 is 200 mm apart. Excavate the second element 124 and place the center of the small diameter excavation head 105d between the first and second elements 122 and 124 between the unexcavated and unimproved portions 90a to excavate. Therefore, the excavation heads 105a and 105c installed at the distal ends of the excavating rods 102a and 102c are indicated by the dotted lines in FIG. 9, and thus the excavation holes 122c and the second element (1) of the first element 122 are shown. From the excavation hole 124a of 124, the overlapping area becomes wider by the length ℓ to the left and the right, respectively, so that the thickness of the order wall is thickened, so that the strength of the order wall is increased and water penetrates into the order wall from the outside of the order wall. Ha It can delay the time.

In addition, when the lining wall is constructed using the multi-axial excavator for lining the wall of the present invention, the lower surface of the excavating heads 105a and 105c is aligned with the lower portion of the excavating head 105b provided between the excavating heads 105a and 105c. Since an excavation head 105d having a small diameter is further provided, as shown in Fig. 11, there is no unimproved portion in the lower portion of the order wall so that water can be reliably blocked.

In the above description, the element refers to three pairs of excavation holes 122a, 122b, 122c, 124a, 124b, 124c, 126a, 126b, which excavated the ground by the excavation heads 105a, 105b, 105d, 105c, 126c).

In the above description, the construction of the lining wall has been described as an example, but the present invention is not limited thereto, and of course, the present invention can also be applied to improvement of the soft ground.

In the above description, the specific embodiments have been shown and described, but the present invention is not limited thereto, for example, by those skilled in the art without departing from the concept of the present invention. Of course, the design can be changed in many ways.

According to the present invention, since an excavation head having a small diameter is further installed at the lower portion of the excavating head provided between the two excavating heads so as to be in line with the lower surface of the excavating head, there is no unimproved portion at the lower portion of the order wall. It is possible to reliably block the penetration of water, excavate the second element so that the distance between the right digging hole of the first element and the left cutting hole of the second element is 200 mm apart, and the unexcavated between the first element and the second element Since the excavation is carried out by positioning the center of the small diameter excavation head in the middle of the unimproved portion, the excavation head provided at the tip of the excavating rod has a length left and right from the excavation hole of the first element and the excavation hole of the second element, respectively. By moving by ℓ, the overlapping area becomes wider, and the thickness of the order wall is thickened. By delaying the time that water penetrates from the outside to the inside of the order wall, the order effect can be enhanced.

Claims (3)

The screw blade 103 attached to the outer circumferential surface and the stirring blade 104 for mixing the soil and the slurry are alternately installed on the outer circumferential surface of the three-axis excavation rods 102a, 102b, and 102c so as not to interfere with each other, and the slurry or Discharge holes communicating with the injection holes formed in the longitudinal direction along the centers of the excavating rods 102a, 102b and 102c to allow the compressed air to pass through are formed in the center and respectively at the distal ends of the excavating rods 102a, 102b and 102c. Installed on the excavation heads 105a, 105b, and 105c to excavate the ground, and the leader master 108 of the crane 107 on the upper part of the excavating rods 102a, 102b, and 102c to be elevated and suspended. Receiving a slurry mixed with a solidifying agent and water introduced and installed between the drive unit 106 for rotating the drive 102a, 102b, 102c and the drive unit 106 and the excavating rod (102a, 102b, 102c) Injection holes formed in the excavating rods 102a and 102c on the side In the multi-axis excavator having a slurry distribution unit 111 to be injected into The lower portion of the excavating head 105b provided at the tip of the excavating rod 102b among the excavating rods 102a, 102b, and 102c does not contact the two excavating heads 105a and 105c, and the both excavating heads ( An excavation head 105d having a small diameter is installed so as to be in line with the lower end surfaces of the 105a and 105c. Excavation heads 105a, 105d, and 105c, which are respectively provided at the distal ends of the excavating rods 102a, 102b, and 102c, are positioned on the ground 90 to be excavated, and the driving unit 106 is rotated forward to excavate the excavation heads 105a, The excavated soil and gravel excavated by the 105b, 105d, and 105c are mixed by the stirring blade 104 together with the slurry mixed with the water and the solidifying agent supplied from the slurry dispensing unit 111 and filled into the excavation hole. 1 form an element 122, The excavation rods 102a, 102b and 102c are pulled out from the first element 122 by rotating the drive unit 106 in a reverse direction from 200 mm to 350 mm from the edge digging hole 122c of the first element 122. Position the excavation head 105c, rotate the drive unit 106 forward to excavate the ground 90 by the excavation head 105a, 105b, 105d, 105c excavated soil and gravel slurry distribution unit The slurry supplied by the water supplied from the 111 and the solidifying agent is mixed with the stirring blade 104 and filled into the excavation hole to form the second element 124, The excavating rods 102a, 102b and 102c are pulled from the second element 124 before the mixture of the soil, gravel and slurry in the first and second elements 122 and 124 is cured. While positioning the excavation head 105c on the excavation hole 122c, the excavation head 105a is positioned on the excavation hole 124a of the second element 124, and on the undeveloped undeveloped portion 90a. A small diameter excavation head 105d provided at the tip end of the excavating rod 102b is positioned at the end thereof, and the unimproved portion 90a is excavated by the excavating heads 105a, 105b, 105d, and 105c according to the forward rotation of the drive unit 106. The excavated earth and sand excavated with the slurry supplied by the slurry dispensing unit 111 and the slurry mixed with the solidifying agent is mixed by the stirring blade 104 to be filled in the excavation hole to form the third element 126 Order wall construction method using a multi-axis excavator, characterized in that. The method of claim 2, wherein the distance between the right excavation hole of the first element and the left hole of the second element is 200 mm so that the thickness of the order wall becomes thick.