KR102184998B1 - Drilling and mixing apparatus with lift blade and construction method using the same - Google Patents

Abstract

The present invention aims to provide an apparatus for improving the ground by punching the ground and injecting a solidifying agent, which comprises: a rod (10) vertically installed; a front end blade (20) installed on a lower end of the rod (10); a stirring wing (30) fixed to and installed on an outer circumferential surface of the rod (10); a lower discharge hole (40) formed by being apart from a lower end of the rod (10) to discharge a solidifying agent; an upper discharge hole (50) formed by being apart from an upper end of the rod to discharge the solidifying agent; and an upper lift blade (60) and a lower lift blade (70) which are installed without being fixed to an outer circumferential surface of the rod (10) to be movable upwards/downwards. When the apparatus is inserted into the ground, the upper lift blade (60) moves towards an upper side of an outer circumferential surface of the rod (10) and blocks the upper discharge hole (50) so as to prevent the solidifying agent from being discharged, and the lower lift blade (70) moves towards an upper side of an outer circumferential surface of the rod (10) and opens the lower discharge hole (40) to induce the solidifying agent to be discharged. When the apparatus is drawn out from the ground, the upper lift blade (60) moves towards a lower side of an outer circumferential surface of the rod (10) and opens the upper discharge hole (50) to induce the solidifying agent to be discharged, and the lower lift blade (70) moves towards a lower side of an outer circumferential surface of the rod (10) and blocks the lower discharge hole (40) to prevent the solidifying agent from being discharged.

Description

TECHNICAL FIELD [Drilling and mixing apparatus with lift blade and construction method using the same}

The present invention relates to a stirring device for improving soft ground, and has a lift blade to increase the strength of a solidified body and prevent adhesion of foreign substances such as slurry to the stirring blade to improve workability, and at the same time, penetration and penetration without separate mechanical operation The lift blade moves up and down using the ground resistance generated from the pull, so that the automatic opening and closing of the discharge port is possible, and a stirring device for improving soft ground with a lift blade securing the structural characteristics of the solidified body, and a method for improving soft ground using the same will be.

1 shows a conventional lower discharge method,

2 shows a conventional upper and lower discharge method.

In general, in order to improve the soft ground, a stirring device with stirring blades that can solidify or treat contaminants such as cement, bentonite, lime, solidified material, slag, or microorganisms is improved in the soil. When drawing, solidified material is injected and the original ground and solidified material are stirred with a stirring blade to improve the soft ground.

In the case of applying the lower discharge method in which the discharge port is only at the lower part and the stirring blade is at the upper part of the discharge port as shown in FIG. 1, the solidified material is discharged and stirred. Therefore, the method of discharging from the lower part and stirring the stirring blade from the upper part As a result, perfect stirring is impossible when drawing, and the surface layer has the disadvantage of lowering the strength of the improved soil due to seawater mixing.

In order to compensate for this problem, a two-stroke (penetration-draw-penetration-draw) system rather than a one-stroke (penetration-draw) system is sometimes introduced, which leads to a problem in that constructability is deteriorated because the construction time per unit is lengthened. .

In order to solve the above problems, as shown in Fig. 2, a discharge port is added to the upper part, and cement slurry is injected into the upper discharge port when drawing, and the efficiency is improved by stirring with a lower stirring blade. There is an example of a patent below.

In the case of the existing patent application No. 10-2009-005813, a discharge device was added to the center of the rod, but it is discharged only in the center, so that the slurry cannot be delivered to the outside of the stirring blade, and whenever the discharge port is changed, there is a problem that it must be operated separately from the outside.

In the case of the existing patent application No. 10-2009-0095588, in the form of a double pipe, the upper discharge port is opened when the outer excavation agitating rod is rotated forward and the lower discharge port is opened when the outer excavation agitating rod is rotated in reverse. Clogging occurs frequently in the inner auger, including, and when clay is mixed, rotation is difficult and has many problems.

In the case of the existing patent application No. 10-2018-0077935, separate upper and lower discharge pipes are inserted into the outer rod, and the diameter of the slurry transfer pipe is narrow, causing clogging, and whenever the discharge is changed, There is a hassle such as having to operate the valve separately.

In order to solve the existing problems, the present inventors can automatically open and close the discharge port because the lift blade moves up and down by using the ground resistance force generated from penetration and extraction without separate mechanical manipulation, and applying a double pipe or a triple pipe using a single pipe It has come to develop a stirring device for improving soft ground with a lift blade of the present invention that prevents clogging of the transfer outlet and secures structural characteristics of a solidified body and a method for improving soft ground using the same.

[Document 1] Korean Patent Registration No. 10-1097359'New Deep Mixing Treatment Method and Device for Strengthening Soft Ground', December 15, 2011 [Document 2] Korean Patent Registration No. 10-1950192'In-depth mixing processing equipment and construction method with upper and lower discharge functions', February 14, 2019

The present invention is presented in order to solve all the conventional problems as described above. Its purpose is to increase the strength of the solidified body by providing a lift blade and to improve workability by preventing the adhesion of foreign substances such as slurry to the stirring blade, and at the same time, lift by using the ground resistance generated from penetration and pulling without separate mechanical manipulation. The blade moves up and down to allow automatic opening and closing of the discharge port, preventing clogging of the discharge port and accompanying rotation, and providing a stirring device for improving soft ground with a lift blade that secures structural characteristics of the solidified body, and a method for improving soft ground using the same. I want to.

In order to solve the above technical problem, the present invention is to improve the ground by drilling the ground and injecting solidified material,

Rod 10 installed vertically;

A tip blade 20 installed below the rod 10;

A stirring blade 30 fixed and installed on the outer peripheral surface of the rod 10;

A lower discharge port 40 formed to be spaced apart from the lower end of the rod 10 and for discharging solidified material;

An upper discharge port 50 which is formed to be spaced apart from the upper end of the rod 10 and discharges the solid fire;

An upper lift blade 60 and a lower lift blade 70 that are not fixed to the outer circumferential surface of the rod 10 and can be moved up and down;

It is composed including,

When penetrating into the ground, the upper lift blade 60 moves above the outer peripheral surface of the rod 10 to block the upper discharge port 50 to prevent the discharge of solidified material, and the lower lift blade 70 prevents the rod 10 It moves to the top of the outer circumferential surface and opens the lower discharge port 40 to induce the discharge of solidified material,

When pulled out from the ground, the upper lift blade 60 moves below the outer circumferential surface of the rod 10 to open the upper discharge port 50 to induce the discharge of the solidified material, and the lower lift blade 70 is the rod 10 A stirring device for improving soft ground with a lift blade, characterized in that moving to the lower portion of the outer circumferential surface and blocking the discharge of the solidified material by blocking the lower discharge port 40, and a method for improving soft ground using the same are provided.

According to the present invention, a lift blade is provided to increase the strength of the solidified body, and at the same time, it improves workability by preventing adhesion of foreign substances such as slurry to the stirring blade, and at the same time, by using the ground resistance generated from penetration and pulling without separate mechanical manipulation. It provides a stirring device for improving soft ground with a lift blade that prevents clogging of the discharge port and secures the structural characteristics of a solidified body by automatically opening and closing the discharge port because the lift blade moves up and down.

In addition, in the present invention, a separate injection tube was not added and directly injected from the rod,

Agitating device for improving soft ground with a lift blade that eliminates the need for injection valve operation from outside by forming a discharge port on a single rod without adding a separate inner rod inside the so-called double pipe method, and soft ground using the same Provides an improvement method.

1 shows a conventional lower discharge method.
2 shows a conventional upper and lower discharge method.
3 shows the problems of the existing construction method.
Figure 4 shows the change in the strength of the solidified body by the lift blade used in the present invention.
5 is a conceptual diagram of a stirring device for improving soft ground having a lift blade of the present invention.
6 shows a process of penetration into the ground according to the embodiment of FIG. 5.
7 shows a drawing process in the ground of the embodiment of FIG. 5.
Figure 8 is a conceptual diagram of another embodiment of a stirring device for improving soft ground with a lift blade of the present invention.
9 shows a process of penetration into the ground according to the embodiment of FIG. 8.
10 shows a drawing process in the ground according to the embodiment of FIG. 8.
11 is a conceptual diagram of another embodiment of a stirring device for improving soft ground with a lift blade of the present invention.
12 shows a process of penetration into the ground according to the embodiment of FIG. 11.
13 shows a drawing process in the ground of the embodiment of FIG. 11.
14 is a conceptual diagram of another embodiment of a stirring device for improving soft ground with a lift blade of the present invention.
15 shows a process of penetration into the ground according to the embodiment of FIG. 14.
16 shows a drawing process in the ground according to the embodiment of FIG. 14.

Hereinafter, the present invention will be described in more detail through embodiments in which the concept of the present invention as described above is preferably implemented together with the accompanying drawings.

5 is a conceptual diagram of a stirring device for improving soft ground with a lift blade of the present invention,

6 shows a process of penetration into the ground of the embodiment of FIG. 5,

7 shows a drawing process in the ground of the embodiment of FIG. 5.

Specifically, FIG. 5(a) shows the concept of operation when penetrating into the ground, and FIG. 5(b) shows the concept of operation when drawing from the ground.

A stirring device for improving soft ground with a lift blade of the present invention,

It is to improve the ground by drilling the ground and injecting solidification material.

Rod 10 installed vertically;

A tip blade 20 installed below the rod 10;

A stirring blade 30 fixed and installed on the outer peripheral surface of the rod 10;

A lower discharge port 40 formed to be spaced apart from the lower end of the rod 10 and for discharging solidified material;

An upper discharge port 50 which is formed to be spaced apart from the upper end of the rod 10 and discharges the solid fire;

An upper lift blade 60 and a lower lift blade 70 that are not fixed to the outer circumferential surface of the rod 10 and can be moved up and down;

It is composed including,

When penetrating into the ground, the upper lift blade 60 moves above the outer peripheral surface of the rod 10 to block the upper discharge port 50 to prevent the discharge of solidified material, and the lower lift blade 70 prevents the rod 10 It moves to the top of the outer circumferential surface and opens the lower discharge port 40 to induce the discharge of solidified material,

When pulled out from the ground, the upper lift blade 60 moves below the outer circumferential surface of the rod 10 to open the upper discharge port 50 to induce the discharge of the solidified material, and the lower lift blade 70 is the rod 10 It is characterized in that the discharging of the solidified material is prevented by moving to the lower part of the outer circumferential surface and blocking the lower discharge port 40.

And the soft ground improvement method using the stirring device for improving soft ground with a lift blade of the present invention,

Using a stirring device for improving soft ground with the lift blade,

(1) a preparatory step of installing a stirring device for improving the soft ground above the ground to be drilled;

(2) Rotate the tip blade 20 and perforate the ground to penetrate the stirring device for improving the soft ground, but the upper lift blade 60 moves to the upper outer circumferential surface of the rod 10 and the upper discharge port 50 An intrusion step of preventing the discharge of solidified material by preventing the discharge of the solidified material, and inducing the discharge of the solidified material by opening the lower discharge port 40 by moving the lower lift blade 70 above the outer circumferential surface of the rod 10;

(3) The stirring device for improving the soft ground is pulled out of the ground, but the upper lift blade 60 moves below the outer peripheral surface of the rod 10 to open the upper discharge port 50 to induce the discharge of the solidified material, and the lower part A drawing step in which the lift blade 70 moves below the outer circumferential surface of the rod 10 to block the lower discharge port 40 to prevent the discharge of solidified material;

It characterized in that it is configured to include.

Specifically, as shown in Figure 5,

The present invention is a first upper guide guide 110 fixedly installed on the upper discharge port 50;

A first lower guide guide 130 fixedly installed under the upper discharge port 50;

A second upper guide guide 150 fixedly installed on the upper portion of the lower discharge port 40;

A second lower guide guide 170 fixedly installed under the lower discharge port 40;

It is composed including,

The first upper guide guide 110 and the first lower guide guide 130 limit the vertical movement range of the upper lift blade 60 that moves up and down by ground resistance,

The second upper guide guide 150 and the second lower guide guide 170 are characterized in that they limit the vertical movement range of the lower lift blade 70, which moves up and down by ground resistance.

As shown in Fig. 6, in the present invention, the upper lift blade 60 and the lower lift blade 70 are moved upward when penetrating into the ground to open the lower discharge port 40,

As shown in FIG. 7, the present invention moves the upper lift blade 60 and the lower lift blade 70 downward when drawing from the ground (underground) to block the lower discharge port 40 and open the upper discharge port 50 The main concept is to become.

Figure 8 is a conceptual diagram of another embodiment of a stirring device for improving soft ground with a lift blade of the present invention,

9 shows a process of penetration into the ground in the embodiment of FIG. 8,

10 shows a drawing process in the ground according to the embodiment of FIG. 8.

Specifically, FIG. 8(a) shows the concept of operation when penetrating into the ground, and FIG. 8(b) shows the concept of operation when drawing from the ground.

Another embodiment of the stirring device for improving soft ground with a lift blade of the present invention shown in Figure 8,

The first lower guide guide 130 and the second upper guide guide 150 are installed to move up and down the outer peripheral surface of the rod 10 instead of being fixedly installed.

And the first lower guide guide 130 and the second upper guide guide 150 are connected by a guide connecting rod 200,

The first lower guide guide 130 and the second upper guide guide 150 are installed to move up and down the outer peripheral surface of the rod 10 at the same time.

As shown in FIG. 9, in the present invention, since the first lower guide guide 130 and the second upper guide guide 150 are connected and driven by a guide connecting rod 200, the upper lift blade 60 and the upper lift blade 60 The lower lift blade 70 is moved upward to open the lower discharge port 40,

As shown in Figure 10, the present invention is the main that the upper lift blade 60 and the lower lift blade 70 are moved downward when drawing from the ground to block the lower discharge port 40 and the upper discharge port 50 is opened. Make it a concept.

11 is a conceptual diagram of another embodiment of a stirring device for improving soft ground with a lift blade of the present invention,

12 shows a process of penetration into the ground in the embodiment of FIG. 11,

13 shows a drawing process in the ground of the embodiment of FIG. 11.

Specifically, FIG. 11(a) shows the concept of operation when penetrating into the ground, and FIG. 11(b) shows the concept of operation when drawing from the ground.

Another embodiment of the stirring device for improving soft ground with a lift blade of the present invention shown in Figure 11,

The upper lift blade 60 and the lower lift blade 70 are connected by a blade connecting rod 300,

It characterized in that the upper lift blade 60 and the lower lift blade 70 are installed to move up and down the outer peripheral surface of the rod 10 at the same time.

As shown in FIG. 12, in the present invention, the upper lift blade 60 and the lower lift blade 70 are simultaneously moved upward when penetrating into the ground so that the lower discharge port 40 is opened,

As shown in Figure 13, in the present invention, the upper lift blade 60 and the lower lift blade 70 are moved downward at the same time when pulling out from the ground, so that the lower discharge port 40 is blocked and the upper discharge port 50 is opened. This is the main concept.

14 is a conceptual diagram of another embodiment of a stirring device for improving soft ground with a lift blade of the present invention,

15 shows a process of penetration into the ground in the embodiment of FIG. 14,

16 shows a drawing process in the ground according to the embodiment of FIG. 14.

Specifically, FIG. 14(a) shows the concept of operation when penetrating into the ground, and FIG. 14(b) shows the concept of operation when drawing from the ground.

Another embodiment of the stirring device for improving soft ground with a lift blade of the present invention shown in FIG. 14,

The upper lift blade 60 is installed so as not to be able to move up and down at a position where the upper discharge port 50 is not formed,

On the outer peripheral surface of the rod 10 on which the upper discharge port 50 is formed, a rotatable discharge control port 400 is further installed,

When intruding into the ground, due to the forward rotation of the rod 10, the discharge control port 400 blocks the upper discharge port 50 to prevent the discharge of solidified material,

It is characterized in that the discharge control port 400 opens the upper discharge port 50 due to the reverse rotation of the rod 10 when drawing from the ground to induce the discharge of the solidified material.

At this time, the discharge control port 400 has a separate stirring blade 33 attached to the outer circumferential surface thereof so that it can be rotated by ground resistance applied to the stirring blade 33 so that the upper discharge port 50 can be opened and closed. .

In conclusion, the present invention,

It greatly reduces the variation in the strength of the solidified body through the lift blade (minimizes the coefficient of variation) and increases the gamma value (the field strength coefficient).

And since stirring during injection and stirring during drawing, it is possible to inject twice as much slurry based on the same pump.

Since the rod of the single pipe continuously injects the cement, it prevents the cement from being transferred, thus improving the workability and increasing the convenience of maintenance.

In addition, since the upper or lower discharge can be automatically controlled during intrusion and extraction, manual operation of the valve is unnecessary, so workability is improved.

It has excellent field applicability because it can be applied by simply attaching an accessory device to the existing single pipe auger.

In terms of quality,

It is possible to form a high-quality improved body through a lift blade, agitation during injection and two injection agitation according to agitation during drawing.

By maximizing the efficiency of stirring the ground and solidified material through the upper and lower discharges, it forms an improved body of uniform strength.

Economically,

Depending on the site, it is possible to simultaneously construct 4 axes, so it is possible to reduce the construction cost by shortening the construction period

It reduces economic losses due to poor ground improvement.

Existing patents add a shaft to the central auger for upper/lower discharge, or use a double pipe or a triple pipe, but in the case of the present invention, it is cheap because a single pipe is used.

The present invention has been described in connection with a preferred embodiment as mentioned above, but various modifications and variations can be made without departing from the gist of the present invention, and can be used in various fields.

Accordingly, the claims of the present invention include modifications and variations that fall within the true scope of the invention.

10: load
20: tip blade
30, 33: stirring blade
40: lower discharge port
50: upper discharge port
60: upper lift blade
70: lower lift blade
110: first upper guide guide
130: first lower guide guide
150: second upper guide guide
170: second lower guide guide
200: guide connecting rod
300: blade connecting rod
400: discharge control port

Claims (7)

It is to improve the ground by drilling the ground and injecting solidification material.
Rod 10 installed vertically;
A tip blade 20 installed below the rod 10;
A stirring blade 30 fixed and installed on the outer peripheral surface of the rod 10;
A lower discharge port 40 formed to be spaced apart from the lower end of the rod 10 and for discharging solidified material;
An upper discharge port 50 which is formed to be spaced apart from the upper end of the rod 10 and discharges the solid fire;
An upper lift blade 60 and a lower lift blade 70 that are not fixed to the outer circumferential surface of the rod 10 and can be moved up and down;
It is composed including,
When penetrating into the ground, the upper lift blade 60 moves above the outer peripheral surface of the rod 10 to block the upper discharge port 50 to prevent the discharge of solidified material, and the lower lift blade 70 prevents the rod 10 It moves to the top of the outer circumferential surface and opens the lower discharge port 40 to induce the discharge of solidified material,
When pulled out from the ground, the upper lift blade 60 moves below the outer circumferential surface of the rod 10 to open the upper discharge port 50 to induce the discharge of the solidified material, and the lower lift blade 70 is the rod 10 A stirring device for improving soft ground with a lift blade, characterized in that it moves to a lower portion of the outer circumferential surface and blocks the lower discharge port 40 to prevent the discharge of solidified material.
In claim 1,
A first upper guide guide 110 fixedly installed on the upper discharge port 50;
A first lower guide guide 130 fixedly installed under the upper discharge port 50;
A second upper guide guide 150 fixedly installed on the upper portion of the lower discharge port 40;
A second lower guide guide 170 fixedly installed under the lower discharge port 40;
It is composed including,
The first upper guide guide 110 and the first lower guide guide 130 limit the vertical movement range of the upper lift blade 60 that moves up and down by ground resistance,
The second upper guide guide 150 and the second lower guide guide 170 limit the vertical movement range of the lower lift blade 70 that moves up and down by ground resistance force. For stirring device.
In paragraph 2,
The first lower guide guide 130 and the second upper guide guide 150 are installed to move up and down the outer peripheral surface of the rod 10 instead of being fixedly installed. A stirring device for improving soft ground with a lift blade, characterized in that .
In paragraph 3,
The first lower guide guide 130 and the second upper guide guide 150 are connected by a guide connecting rod 200,
A stirring device for improving soft ground with a lift blade, characterized in that the first lower guide guide 130 and the second upper guide guide 150 are installed to move up and down the outer peripheral surface of the rod 10 at the same time.
In paragraph 3,
The upper lift blade 60 and the lower lift blade 70 are connected by a blade connecting rod 300,
A stirring device for improving soft ground with a lift blade, characterized in that the upper lift blade (60) and the lower lift blade (70) are installed to move up and down the outer peripheral surface of the rod (10).
In claim 1,
The upper lift blade 60 is installed so as not to be able to move up and down at a position where the upper discharge port 50 is not formed,
A rotatable discharge control port 400 is further installed on the outer circumferential surface of the rod 10 on which the upper discharge port 50 is formed,
When intruding into the ground, due to the forward rotation of the rod 10, the discharge control port 400 blocks the upper discharge port 50 to prevent the discharge of solidified material,
For improvement of soft ground with a lift blade, characterized in that the discharge control port 400 opens the upper discharge port 50 due to the reverse rotation of the rod 10 when it is pulled out of the ground and induces the discharge of the solidified material. Stirring device.
Using a stirring device for improving soft ground with a lift blade of claim 1,
(1) a preparatory step of installing a stirring device for improving the soft ground above the ground to be drilled;
(2) Rotate the tip blade 20 and perforate the ground to penetrate the stirring device for improving the soft ground, but the upper lift blade 60 moves to the upper outer circumferential surface of the rod 10 and the upper discharge port 50 An intrusion step of preventing the discharge of solidified material by preventing the discharge of the solidified material, and inducing the discharge of the solidified material by opening the lower discharge port 40 by moving the lower lift blade 70 above the outer circumferential surface of the rod 10;
(3) The stirring device for improving the soft ground is pulled out of the ground, but the upper lift blade 60 moves below the outer peripheral surface of the rod 10 to open the upper discharge port 50 to induce the discharge of the solidified material, and the lower part A drawing step in which the lift blade 70 moves below the outer circumferential surface of the rod 10 to block the lower discharge port 40 to prevent the discharge of solidified material;
Soft ground improvement method using a stirring device for improving soft ground with a lift blade, characterized in that configured to include.

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