KR200275366Y1 - Series of wall structure method - Google Patents

Abstract

The present invention relates to a device for building a continuous wall of water in the ground by using a rotator receiving the rotational power from the organo device, a locator receiving a rotational power from the organo device, and a plurality of output shafts of the rotator The connection rod, the stirring rod and the excavating rod in sequence, and then rotate each rod to excavate the ground, and at the same time, a cement paste supplied through the single swivel installed in the organizer and the rotator has one mounted inside each rod. In constructing a continuous wall of underground water film by agitating the earth and sand excavated by the excavating rod in such a way as to discharge through the supply line, the single swivel installed in each of the organo device and the rotator supplies the cement pool. To the output shaft of the rotator separately from the single swivel. Compressed composite swivel is to supply the pneumatic and chemical at the same time, a plurality of connecting rods connected vertically in turn to the bottom of the composite swivel, cement pool supply line installed in each of the stirring rod and the excavating rod And the pneumatic supply line and the chemical supply line to simultaneously transfer the cement pool and pneumatic and chemical supplied through the single swivel and the composite swivel, and the cement pool and pneumatic and Pneumatics discharged from the bottom of the excavating rod allow the chemicals to be discharged at different locations at the same time, so that the sediment can be penetrated evenly into the excavated soil. Evenly penetrated into destroyed soil and evenly penetrated into simultaneous soil It is an idea that the ground water film is continuously formed while the cement paste is rapidly solidified by chemicals and rapidly hardens with soil.

Description

Underground water barrier continuous wall construction device {Series of wall structure method}

The present invention relates to a device for building a continuous wall of water barriers in the ground using a rotator receives the rotational power from the Auger Machine.

In general, when improving the soft ground, constructing a continuous wall in the ground, or when in-place piles are built in the ground, the organ device and the rotator are mainly used, and the structure of the organ device and the rotator will be briefly described. Is as follows.

It is attached to the support arm of the crawler traveling device that runs on the ground, and the organ device is suspended on the upper side of the leader, which is vertically raised above the ground, so that the device can be moved up and down by a wire cable. The rotator is connected and assembled. In addition, a plurality of cylindrical connecting rods are vertically connected to the output shaft of the rotator, and a stirring rod and an excavating rod are sequentially connected to the lowermost connecting rod, and then the rotator is operated. As the output shaft of the rotary shaft rotates, the connecting rod, the stirring rod, and the drilling rod connected in multiple stages perpendicular to the output shaft rotate. As the rotator rotates, the drilling rod excavates the ground and is connected to the drilling rod. The stirring rod is configured to stir the ground layer excavated by the drilling rod.

In the prior art, when improving the soft ground or building a continuous continuous wall, the supply path of cement paste is installed at the inner center of the rotator by supplying only one type of cement paste fluid through a swivel mounted inside the organo device. And, through the supply pipe installed in each of the connecting rod, stirring rod, excavating rod is discharged through the orga head attached to the bottom of the excavating rod, the cement paste discharged to the excavated soil is mixed by the stirring blades of the stirring rod. However, this conventional technology has a problem that the cement paste discharged into the excavation hole is being excavated evenly mixed in the soil because it only discharges the cement paste through the oga head when the excavation work. As one of the reasons, the earth and sand are excellent in cohesion and when the water is contained, the cohesive force is stronger. When excavating the ground with the Oga head, the excavated soil is excavated in the form of agglomeration. Cement paste cannot be mixed evenly in the soil because it does not break even when stirring the stirring blades of the rod. Therefore, underground continuous wall cannot be constructed as designed because the cement paste supplied to the excavation hole cannot be mixed evenly in the soil. In addition, it was pointed out as a problem that the design can not have strength.

As a solution to the problems of the prior art as described above, there is a method and apparatus for constructing underground continuous walls of Korean Patent No. 142486 (hereinafter, referred to as a preceding design).

The preceding proposal relates to a method and apparatus for applying a two-axis rotator and a three-axis rotator to construct a continuous underground wall more efficiently, and the lower end of the connecting rod and the lowermost connecting rod vertically connected to the rotator A structure for installing a discharge device for discharging the cement pool between the stirring rod connected to the further characterized in that the cement pool discharged to the discharge device can be evenly mixed in the excavated soil.

However, the preceding proposal also supplies a small amount of cement paste to the soil during the excavation work of the ground, and excavates the excavation hole to the set depth, and then supplies a large amount of cement paste when raising the stirring rod in the excavation hole. The problem is that the cement paste cannot be mixed evenly when the soil excavated by the oga head is agglomerated because only the cement paste is mixed with the soil as a means and there is no means to weaken the cohesive force of the excavated soil. There is a situation.

In addition, the preceding design is applied to the three-axis rotator, as shown in Figure 13 when the continuous wall in the ground to build the orga head 101 of the stirring rod 100 installed on both sides of the excavation hole 300 When the bottom surface 301 is excavated, but the orga head 201 of the stirring rod 200 installed in the center is installed in a state of excavating on the left and right sides of the orga head 101, when the underground continuous wall is constructed. An unexcavated protrusion 302 is inevitably formed between the left and right oga heads 101, and the protrusion 302 is not only in an excavated state but also forms a soil layer in which cement paste is not mixed. Therefore, when the construction of the underground continuous wall is completed, groundwater penetrates into the protruding portion 302 formed as the soil layer, and the soil is lost, which causes the protrusion 302 to easily collapse. A situation which is pointed out as a problem.

In particular, the prior art and the prior art described above had to supply only one cement paste because only one passage was formed in each of the connecting rod and the stirring rod, and also means for supplying and mixing only the cement paste when excavating an excavation hole. It is pointed out that the cement pool is not evenly mixed with the soil when improving the soft ground due to the construction of underground continuous walls, or the strength according to the design when improving the ground where the groundwater flows or constructing the underground continuous wall. It is pointed out that the biggest disadvantage is that the ground improvement and the underground continuous wall cannot be constructed in line with this. This is because when the cement pool is supplied while excavating the groundwater through which groundwater flows, the cement pool supplied to the excavated soil is lost due to the flow rate of the groundwater. Therefore, when the ground improvement and underground continuous wall are constructed, If the cement pool supplied to the ground is lost by groundwater, the ground improvement or underground continuous wall cannot be constructed to the design strength.

The present invention has been made to solve the above problems appearing in the prior art and the prior design, in particular, the present invention contaminates the water flowing in the surrounding strata and valleys by the sewage and wastewater generated from the mine penetrates underground In addition, pneumatics, cement pools, and chemicals can be used to excavate earth and sand to build a continuous wall of underground water barriers that can prevent the sewage and wastewater from plants around the rivers from seeping into the basement and contaminating surrounding strata and rivers. Providing at least two kinds of materials at the same time to allow the excavated soil to be evenly mixed with the cement paste, and also to provide a device for building a continuous wall of underground water barriers to allow the mixed soil and cement paste to solidify and harden quickly It was designed for the purpose.

Means of the present invention for achieving the above object,

The organo device, a rotator receiving rotational power from the organo device, and a plurality of connecting rods, agitation rods, and excavating rods are sequentially connected to the output shaft of the rotator, and each rod is rotated to excavate the ground and simultaneously A continuous wall of underground water walls is agitated by stirring the soil and excavated cement pools excavated by the excavating rods in such a way that the cement paste supplied through the single swivel installed in the device and rotator is discharged through one supply line mounted inside each rod. In constructing

It is connected between the output shaft of the rotator and the uppermost side connecting rod, the upper and lower ends of the cement pool supply passage through the inner center of the cement pool supply passage is different from each other, the height of the closed upper pneumatic supply passage And an inner cylinder having a chemical supply passage formed therein, a pneumatic inlet for supplying pneumatics and drugs to the pneumatic supply passage and the chemical supply passage of the inner cylinder rotatably, and an outer cylinder having a chemical inlet formed therein. Type swivel;

It is connected to the lower end of the stirring rod, and the excavation rod and the cement pool and the pneumatic outflow passage and the chemical outflow passage that can discharge the cement pool and the pneumatic and chemicals to the lower side and the vertical center and both sides are formed vertically, respectively; ;

It is attached to the bottom of the excavation rod at a predetermined interval, respectively, and the cement pool outflow passage formed in the excavation rod and the discharge passage communicating with each of the pneumatic outflow passage and the chemical outflow passage is formed to the pneumatic and A plurality of drilling bits for simultaneously discharging the agents separately at different locations;

Characterized in that configured to include,

In addition, the outer cylinder rotatably surrounding the inner cylinder of the composite swivel, is divided into a plurality of manufactured and then divided into a flange formed on each of the upper and lower cylinders are produced by screwing with bolts, characterized in that assembled Will be

In addition, a plurality of excavation bits attached to the lower side of the excavating rod at a predetermined interval is attached to a position higher than the bottom of the excavating rod, and the discharge passage at the bottom of the cement pool outlet passage installed in the inner center of the excavating rod Pneumatic outflow passages and chemical outflow passages installed on both sides of the excavation rod and the discharge passage formed in each of the excavation bit selected from the plurality of excavation bits attached to the bottom of the excavation rod to be formed to be divided into both sides at the bottom of the excavation rod It is characterized in that it is configured to communicate with.

1 and 2 is a front view of an embodiment for explaining the present invention.

Figure 3 is a side view of an embodiment for explaining the present invention.

Figure 4 is a cross-sectional view of the composite swivel of the present invention.

5 and 6 are excavation rod front view of an embodiment of the present invention.

7 is a cross-sectional view of the excavation rod in the embodiment of FIG.

8 is a cross-sectional view taken along the line A-A of FIG.

9 is a cross-sectional view of the excavation rod in the embodiment of FIG. 6.

10 is a cross-sectional view taken along the line B-B in FIG. 9.

11 is an excavation furnace when constructing an excavation construction by applying the present invention to a three-axis rotator

Figure of installation status and construction of continuous wall of underground water barriers.

12 is an excavation furnace when constructing an excavation construction by applying the present invention to a two-axis rotator

Installation condition and underground continuous wall construction diagram.

Figure 13 shows the construction of a continuous underground wall with a three-axis rotator in the prior art

drawing.

※ Explanation of code for main part of drawing

1: crawler traveling device 11: support arm

12 reader 16 organ device

2: rotator 21: output shaft

3: connecting rod 4: stirring rod

5: excavation rod 51: mail joint

52a ~ 52d: Excavation bit 53: Cement paste outflow passage

54: pneumatic spill passage 55: chemical spill passage

6: complex swivel 61: inner cylinder

62: outer cylinder 62a, 62b: upper and lower cylinder

63a, 63b: Flange 64: Pneumatic inlet

65: chemical injection port 66: mail joint

67: female joint 611: cement pool supply passage

612: pneumatic supply passage 613: chemical supply passage

614: upper annular groove 615: lower annular groove

Referring to the accompanying drawings, preferred embodiments of the present invention are as follows.

1 and 2 is a front view of an embodiment for explaining the present invention, Figure 3 is a side view of an embodiment for explaining the present invention,

The above figure shows that the underground water film is a continuous wall formed by a three-axis rotator and a two-axis rotator. The lower end of the leader 12 is supported by the support arm 11 of the crawler traveling device 1 traveling on the ground. The upper end of the leader 12 is supported by the stay 13 installed to be inclined upward from the rear end of the crawler traveling device (1).

In the guide rod 15 vertically installed downward from the upper support 14 of the leader 12, the organ device 16 is installed to be liftable, and the organ device 16 is the leader 12 It is installed in a suspended state by the wire cable 17, which is spoken on the pulley (not shown) installed on the upper support 14 of the rotator 2 is connected to the output shaft of the organ device 16 is assembled and assembled, The rotator 2 is to receive the rotational power from the organ device (16).

In addition, the rotator 2 that receives the rotational power from the organ device 16 is composed of a single axis (one axis), and consists of two axes and three axes.

1 and 2 of the drawings of the present invention shows a rotator 2 composed of three axes and two axes as an embodiment.

The rotator 2 composed of the three axes and the two axes is configured to receive rotational power from an output shaft projecting on one axis to the lower part of the organizer 16, and a predetermined direction on the lower part of the rotator 2. Three output shafts 21 are rotated.

When the connecting rod 3 is installed biaxially on the rotator 2, the connecting rod is biaxially connected to the left and right output shafts installed at the lower part of the rotator 2, and the connecting rod 3 is connected to the rotator 2. When 3) is installed in three axes, the connecting rod is connected in three axes to all three output shafts installed in the lower part of the rotator.

And connecting rods (3) installed on each output shaft 21 of the rotator (2) is a plurality of vertically connected in a multi-stage connection assembling downwards, stirring at the bottom of the lowermost connection rod (3) assembled in a multistage connection The stirring rod 4 in which the blade 41 is formed in multiple stages is connected, and the drilling rod 5 is connected to the lower end of the stirring rod 4, too.

One of the features of the present invention is that the composite swivel (6) that can supply the pneumatic and chemical at the same time between the output shaft 21 and the uppermost connection rod (3) of the rotator 2, the composite The structure of the mold swivel 6 is shown in FIG. 4.

The composite swivel (6) is composed of an inner cylinder 61 and an outer cylinder 62, the inner cylinder 61 is directly connected to the output shaft 21 of the rotator 2 to rotate, the outer cylinder ( 62 is rotatably wrapped around the inner cylinder 61 and supported by a guide rod 15 of the leader 12 so as to be lifted and lowered between the inner and outer cylinders 61 and 62. A plurality of packing members 63 having a “V” cross section is interposed therebetween, and the airtightness or hydraulic pressure is prevented from leaking even when the inner cylinder 61 rotates.

In the inner center of the inner cylinder 61 of the composite swivel 6 is formed a cement pool supply passage 611 penetrating up and down, the upper end is closed on both sides of the cement pool supply passage 611 and the lower end is an opening. Pneumatic supply passage 612 and the chemical supply passage 613 is formed, respectively, the pneumatic supply passage 612 is formed high toward the upward while the chemical supply passage 613 is formed low, and The closed upper end of the pneumatic supply passage 612 is configured to communicate with the upper annular groove 614 formed in an annular portion on the upper peripheral edge of the inner cylinder 61, the closed upper end of the medicine supply passage 613 is the inner It is comprised so that it may communicate with the lower annular groove 615 formed in the lower peripheral part of the cylinder 61. As shown in FIG.

The outer cylinder 62 of the composite swivel 6 is to be divided into two or more pieces, in the present invention, the upper and lower cylinders (62a, 62b) as shown in the drawing (see Fig. 4) for convenience. The division into two parts will be described as an example.

The outer cylinder 62 is divided into upper and lower cylinders 62a and 62b, respectively, and then manufactured to form a flange 63a formed at a lower peripheral portion of the upper cylinder 62a and an upper peripheral portion of the lower cylinder 62b. The upper and lower cylinders 62a and 62b are integrally coupled to each other to form an integral outer cylinder 62 by screwing the formed flange 63b into bolts (not shown). On one side of the upper cylinder 62a, a pneumatic inlet 64 is formed so as to communicate with the upper annular groove 614 of the inner cylinder 61, and on one side of the lower cylinder 62b of the inner cylinder 61. The chemical inlet 65 is formed to communicate with the lower annular groove 615.

The pneumatic inlet 64 is connected to the pneumatic hose (not shown) for supplying the pneumatic pressure from the external compressor, the drug inlet 65 is a chemical supply hose for supplying the medicine from the external chemical supply device (shown) Omitted) is connected, the drug supplied to the drug inlet 65 in the present invention is a bridge that allows the mixing action of the coagulant (or quickener) or cement paste to quickly solidify and cure the cement paste according to the stratum structure. Choose any one of the topical drugs.

And a male joint (66) is welded to the upper end of the inner cylinder 61 of the composite swivel (6), a female joint (female joint: 67) is welded to the lower end, the mail joint ( 66 is coupled to the output shaft 21 of the rotator 2 by a coupling pin (not shown), and the top of the connecting rod 3 is inserted into the female joint 67. In is coupled by a coupling pin (not shown).

In addition, at the center of the male joint 66 welded to the upper end of the inner cylinder 61, a passage 661 is formed in vertical communication with the cement pool supply passage 611.

On the other hand, although not shown in the drawing, each of the connecting rods 3 vertically connected to the lower side of the composite swivel 6 vertically, each of the cement pool supply line, pneumatic supply line, and chemical supply line, each of which is a pipe, Each of these lines has a cement pool supply passage 611, a pneumatic supply passage 612, and a chemical supply passage when the connecting rod 3 is connected to the female joint 67 of the composite swivel 6. 613) In addition to being connected to each other, even when each of the plurality of connecting rods 3 are connected in multiple stages, each of the lines has a structure in which they are connected to each other, and also cement in the stirring rod 4 in the lowermost connecting rod 3. Full supply lines, pneumatic supply lines and chemical supply lines (not shown) are installed.

Another feature of the present invention is to allow the cement paste, pneumatic and chemicals to be simultaneously discharged from different locations through a plurality of drilling bits radially attached to the bottom of the drilling rod (5), An illustration of an embodiment thereof is shown in FIGS. 5 to 10.

The upper end of the excavating rod 5 of each embodiment is provided with a male joint 51 having the same structure as the male joint 66 of the composite swivel 6, and a plurality of excavating bits 52a to 52d at the lower end. Is installed radially with constant intervals.

In addition, the cement pool outflow passage 53, the pneumatic outflow passage 54, and the chemical outflow passage 55, which are connected to each line of the connecting rod 3, are installed at the inner center and both sides of the excavation rod 5. The upper end of each of the outflow passages is formed through the mail joint 51 and is connected to each line of the connecting rod (3), while the lower end of each outflow passage has a structure that is discharged through different passages have.

5, 7 and 10, the excavating rod 5 of the embodiment shown in the center of the cement pool outflow passage 53 installed at the center of the lower end 531 is branched to both sides facing the opposite position of the excavating rod 5 lower periphery It is connected to the discharge passage (a, b) formed in each of the two drilling bit (52a, 52b) attached to the lower end, 541 of the pneumatic discharge passage 54 is formed in the other drilling bit (52c) It is connected to the discharge passage (c), the lower end 551 of the chemical outflow passage 55 is connected to the discharge passage (d) formed in another drilling bit (52d).

In addition, the drilling bit (52a to 52d) of the drilling rod 5 of the embodiment shown in Figure 6 and 9 has a structure that is attached directly on the bottom of the drilling rod 5, the cement pool outlet passage 53 is installed in the center The lower end 531 of the excavating rod 5 is configured to discharge the cement paste to both sides of the lower periphery, while the lower end 541 of the pneumatic discharge passage 54 of one side is discharged formed in one excavation bit 52c It is configured to discharge the pneumatic through the passage (c) and the other drug outlet passage 55 is configured to discharge the drug through the discharge passage (d) of the other drilling bit (52d).

All of the plurality of excavation bits 52a to 52d are attached at an inclined angle toward one side, and the discharge passages a to d formed at each of the excavation bits are formed to be opened toward the inclined downward surface. It is configured to discharge cement paste, pneumatics and chemicals under the drilling bit.

And the plurality of excavation bits radially attached to each of the excavating rod (5) is to perform a stirring operation for stirring the excavated soil with the excavation operation to excavate the earth and sand, and thus a plurality of excavation bits to excavate the soil The cement paste, pneumatic, and chemicals discharged through each discharge passage are evenly mixed with the excavated soil, and the stirring blade 56 is attached to the outer circumferential surface of the excavating rod 5 to stir the excavated soil again. .

On the other hand, a single swivel 18 for supplying cement paste is provided above each of the connecting rods 3 connected to the rotator 2 in two and three axes.

In describing the operation of constructing the continuous wall by the underground water film in this manner, the connecting rods 3 are provided in three axes on each output shaft 21 of the rotator 2 to construct the continuous water wall by the underground water film. It demonstrates as an example.

As shown in FIG. 1, connecting rods 3 are installed in three axes on each output shaft 21 of the rotator 2, and a stirring rod 4 and an excavating rod are connected to the lowermost connecting rod 3. Excavation rods connected to both left and right sides are to install and install excavation rods 5 formed at the bottom of excavation bits 52a to 52d, and excavation rods 52a to 52d are excavated at the center. Excavation rod 5 formed at a position slightly higher than the lower end of the rod is connected.

Therefore, the lower end of the excavation rod (5) installed in the center is horizontal with the excavation bits (52a to 52d) of the excavation rod (5) installed on both left and right sides to be able to excavate the bottom surface of the excavation hole horizontally In addition, since the excavation bits radially attached to the drilling rod 5 installed in the middle are located above the excavation bits attached to the lower ends of the excavating rods 5 on both the left and right sides, the excavation bits are not interfered with each other during the excavation operation. The soil can be excavated and stirred while rotating.

As described above, the ground excavation work is performed in a state in which the connecting rod 3, the stirring rod 4, and the excavating rod 5 are connected in three axes, and when excavating a soft ground where groundwater does not flow in the basement 3 The excavation work is performed by simultaneously supplying cement pool and pneumatic pressure to each connecting rod (3) installed on the shaft, and when constructing a continuous wall of underground water barriers by excavating a soft ground where groundwater flows underground, The operation is performed while supplying the cement paste, pneumatic and chemicals together. Hereinafter, the ground water film will be constructed while supplying the cement paste, pneumatic and chemicals simultaneously.

Cement paste supply passage 611 through the center of the inner cylinder 61 of each composite swivel (6) is supplied through the single swivel (18) mounted on the organizer 16 and the rotator (2) And cement cement outflow passages 53 formed at the centers of the excavating rods 5 through cement paste supply lines installed at the centers of each connecting rod 3 and each stirring rod 4, respectively. Pneumatic pressure supplied to the pneumatic inlet (64) formed in the outer cylinder 62 of the) is installed in the pneumatic supply passage 612 formed on one side of the inner cylinder 61 and each connecting rod (3) and stirring rod (4) The chemicals supplied to the pneumatic outflow passage 54 of each excavating rod 5 through the pneumatic supply line, and supplied to the chemical inlet 65 formed in the outer cylinder 62 of each complex swivel 6 are the inner cylinder ( Each oyster through the chemical supply passage 613 formed on the other side of the inner 61 and the chemical supply line installed in each connecting rod 3 and the stirring rod 4 It is supplied to the drug outlet passage 55 of the rod 5.

Cement paste and pneumatics and chemicals supplied to each outflow passage of the excavation rod (5) as described above is discharged through the bottom (531, 541, 551) of each outflow passage, excavation rods installed on both left and right sides ( Cement paste discharged to the bottom 531 of the cement pool outlet passage 53 of 5) is discharge passage (a) formed in the two drilling bit (52a) (52b) symmetrically attached to both sides of the bottom of the excavation rod ( b) is discharged downward of the excavation bits 52a, 52b, and the pneumatic discharged to the lower end 541 of the pneumatic discharge passage 54 of the excavating rod 5 on both the left and right sides is excavating rod Is discharged toward the downward direction of the excavation bit (52c) through the discharge passage (c) formed in the other excavation bit (52c) attached to one side of the lower end of the, the chemicals of the excavation rod (5) of the left and right sides The chemical discharged through the lower end 551 of the outflow passage 55 is excavated bit (52d) through the discharge passage (d) formed in another one drilling bit (52d) The cement paste, pneumatics and chemicals simultaneously discharged through the discharge passages (a to d) of each of the plurality of radially attached excavation bits (52a to 52d) are thus discharged downward. As the excavation rods 5 rotate, the excavation bits 52a to 52b rotate while being discharged in the state of excavating and stirring the soil, and are evenly mixed with the soil.

The pneumatic discharged to the excavated soil is to penetrate the soil to destroy the cohesive force of the soil and evenly penetrates evenly between the soil particles at the same time to allow the cement paste and chemicals to evenly penetrate the soil. In addition, the pneumatic pressure can be expected to work to make the cement paste and the medicine evenly stirred and mixed in the soil, so that the stirring operation of the Toshi and the cement paste and the chemical to the floating action of the excavated soil to be smoothly made.

Drilling rod (5) installed in the middle of the lower and the left and right sides of the excavation rod (52a to 52d) attached to the bottom of the excavation rods attached to the horizontal to proceed with the excavation work, the center of the center of the excavation rod (5) The lower end 531 of the cement pool outlet passage 53 formed in the discharge state of the cement pool to both sides of the lower end of the excavation rod, so the cement pool discharged through the lower end 531 is excavation of the excavation rod on both left and right sides. Pneumatic discharged downward from each of the two excavation bits 52c and 52d attached to the upper and lower ends of the excavating rod 5 while being mixed with the excavated and agitated soil by the bits 52a to 52d, and Since the chemical penetrates into the cement paste and agitated soil at the bottom of the excavation rod 5 in the middle thereof, the cement paste and the chemical are uniformly stirred in the soil to be excavated from the bottom of the middle excavation rod 5.

Excavation rods 5 on the left, right sides and the center installed in three axes as described above perform excavation work in a flat state of the bottom of the excavation hole, and also simultaneously discharge cement paste, pneumatic and chemicals from different positions. Soil and cement paste and chemicals are mixed evenly as a number of excavation bits rotate and the stirring operation proceeds. At this time, the chemical mixed in the soil and cement paste is a coagulant that solidifies the cement paste in a short time. Cement paste and soil are hardened by forming a wall due to the phenomenon that cement paste mixed with soil excavated by excavation bit of (5) is rapidly solidified by coagulant medicine.

Therefore, even when underground water flows into the ground where underground water flows, the cement pool is rapidly solidified by coagulant chemicals before it is lost by the groundwater even when groundwater is infiltrated into the excavated soil. By hardening together with the earth and sand, the underground water film having the construction strength by design can be constructed in not only the soft ground but also the groundwater where underground water flows, and also the lower ends of the excavating rods 5 on the left and right sides. As the excavation of soil is carried out while the plurality of excavation bits 52a to 52d attached to the bottom and the lower end of the excavating rod 5 in the middle are horizontal, the bottom portion of the underground water barrier continuous wall built underground is in a horizontal state. You can build it.

Next, as shown in FIG. 2, the connecting rod 3 is connected to the rotator 2 biaxially to construct a continuous wall of underground water barriers or to install the ground improvement or in-situ pile. Like the three-axis rotator, two hybrid swivels 6 are connected to each of the three output swivels 6 on the left and right sides of the three output shafts installed on the rotator 2, Excavation work is performed by connecting the connecting rod 3, the stirring rod 4, and the excavating rod 5, and a plurality of excavation bits attached to the excavating bit 5 used in this embodiment are of the above-described embodiment. It is composed of a length longer than the excavation bits (52a to 52d) attached to the excavation rod, and also differs only in that the lengths of the stirring blades (41) and (56) of each of the stirring rod (4) and the excavating rod (5) are longer. The configuration and operation is the same as the excavation bit of the above embodiment And the explanation is therefore omitted here.

According to the present invention as described above with the cement paste through a plurality of excavation bits radially attached to the bottom of each excavation rod when digging the ground to a set depth to improve the soft ground or to build a continuous wall of water in the ground At the same time, at least two or more kinds of fluids such as pneumatics or chemicals can be discharged at different locations at the same time, allowing the underground water film to build a continuous wall. Along with the effect that the grass and chemicals are evenly penetrated between the earth and sand particles, the soil or stones (gravel) excavated are allowed to be stirred while floating by pneumatic pressure, so that the stirring operation with the cement paste and the chemical is smoothly performed. Can be expected and also discharged with cement paste and pneumatic If the chemical is a coagulant that quickly solidifies the cement pool, the coagulant drug rapidly solidifies the cement pool mixed with the soil, so that the groundwater is infiltrated into the earth and sand excavated when the underground water barrier is formed in the soft ground where groundwater flows Even if the cement pool is rapidly solidified before it is lost by the groundwater, it can be expected to harden together with the earth and sand, so that the underground water film having the design strength can be constructed even in the basement of the soft ground where the groundwater flows. It is a useful design.

Claims (3)

The organo device 16, the rotator 2 receiving the rotational power from the organo device, and a plurality of connecting rods 3, the stirring rod 4 and the excavating rod in order to the output shaft of the rotator, each rod By excavating the ground by rotating operation and at the same time by the excavation rod in such a way that the cement paste supplied through the single swivel 18 installed in the organizer and rotator is discharged through one supply line mounted inside each rod In constructing continuous wall of underground water film by stirring excavated soil and cement pool, It is connected between the output shaft of the rotator (2) and the uppermost connection rod, the height of the upper end closed on both sides of the cement pool supply passage 611 and the cement pool supply passage in the inner center is different and the bottom is The inner cylinder 61 having the opened pneumatic supply passage 612 and the chemical supply passage 613 and the inner cylinder rotatably surrounds the pneumatic supply passage and the chemical supply passage of the inner cylinder. A composite swivel (6) consisting of an outer cylinder (62) formed with a pneumatic inlet (64) and a chemical inlet (65) for supplying the gas; It is connected to the lower end of the stirring rod (4), the cement pool and the pneumatic flow passage (53) and pneumatic discharge passage (54) and the chemical flow passage (55) which can discharge the cement pool and pneumatic and chemicals to the lower side on the inner center and both sides. Excavating rods (5) each of which is formed vertically; Attached to the bottom circumferential direction of the excavating rod (5) at predetermined intervals, respectively, cement pool outflow passage 53, pneumatic outflow passage 54 and the chemical outflow passage 55 formed in the excavation rod, respectively A plurality of excavation bits 52a to 52d each having a discharge passage a to d communicating with each other for simultaneously discharging the cement paste, pneumatics and chemicals at different positions; Underground water barrier continuous wall construction device characterized in that the configuration. The method of claim 1, The outer cylinder 62 which rotatably surrounds the inner cylinder 61 of the composite swivel 6 is manufactured by dividing into a plurality of screws, and then screwed a flange formed in each of the upper and lower cylinders, which are separately divided, with bolts. Underground water barrier continuous wall building apparatus characterized in that the assembly by fastening. The method of claim 1, A plurality of excavation bits 52a to 52d attached to the lower end of the excavating rod 5 at a predetermined interval are attached to a position higher than the lower end of the excavating rod, and then a cement pool outlet passage installed at the inner center of the excavating rod. The lower end of the 53 is formed to be divided into both sides from the lower end of the excavating rod (5), the pneumatic outlet passage 54 and the chemical outflow passage (55) installed on both sides of the excavating rod is above the bottom of the excavating rod An underground water barrier continuous wall building device, characterized in that configured to communicate with the discharge passage formed in each of the excavated bit selected from the plurality of drill bits attached.