KR20200011637A - Casing used in cip method, temporary earth retaining structure and construction method of earth retaining structure - Google Patents

Abstract

A casing used in a CIP construction method, as a casing used in the cast-in place pile (CIP) construction method forming an earth retaining structure, includes a cylindrical casing part having a hollow therein and a concave casing part formed on one side of the cylindrical casing part and having a concave part. In a lower portion of the cylindrical casing part, a penetration hole penetrating the cylindrical casing part and the concave casing part is formed. In a side portion of the concave casing part, an injecting hole is formed. An injection object, which is injected into the injecting hole, is introduced into the cylindrical casing part through the penetration hole.

Description

Casing, earthquake temporary structure and earthquake structure construction method used in CIP method {CASING USED IN CIP METHOD, TEMPORARY EARTH RETAINING STRUCTURE AND CONSTRUCTION METHOD OF EARTH RETAINING STRUCTURE}

The present invention is a method for constructing a casing, earthwork temporary structure, and earthquake structure used in the CIP method, more specifically, due to the structural features of the casing does not require a separate order wall construction, it is possible to create an earthquake structure that does not crack easily The present invention relates to a method for constructing a casing, an earthquake temporary structure, and an earthquake structure used in the CIP method.

In general, as a method of forming the earth wall and the order wall, a CIP (Cast-in Place Pile) method or a SCW (Soil Cement Wall) method is mainly used.

Among them, the CIP method is a kind of casting-in-place casting method, which drills a predetermined diameter with auger equipment or T-4 equipment on the ground, and inserts a reinforcement such as an H-beam pile or reinforcing bar assembly into the drilled hole. The remaining part is filled with gravel and a filling material (eg cement, ready-mixed concrete) is poured to form an earth wall.

However, in the case of the CIP method, the pillars cannot be vertically installed and are inclined, resulting in gaps between the pillars. Aggregate separation may occur due to the flow rate of the groundwater, or when the soil conditions are poor, the bulbs may not be constructed normally. For this reason, the staggered wall is poorly constructed, so reinforcement measures are needed.

In addition, when there is groundwater, a separate order method (see Korean Patent No. 10-1775621) such as LW grouting, SGR grouting, cement grouting, etc. is required on the back surface, which takes a lot of time and money.

Therefore, a separate order wall construction and grouting process is not required, and there is a need for a construction method capable of generating an earthquake structure in which a crack does not easily occur.

In order to solve this problem, a separate order wall construction and grouting process is not required, and the necessity of the method of constructing a casing, an earthwork temporary structure, and an earthquake structure used in the CIP method, which can generate an earthquake structure that does not easily crack, is required. It is emerging.

The problem to be solved by the present invention, through the shape of the casing used in the CIP method is not required a separate order wall construction and grouting process, the casing used in the CIP method, which can create a crust structure that does not easily crack, The present invention provides a method of constructing an earthquake temporary structure and an earthquake structure.

Tasks to be solved by the present invention are not limited to the above-mentioned problems, and other tasks not mentioned will be clearly understood by those skilled in the art from the following description.

The casing used in the CIP method according to an embodiment of the present invention for solving the above problems is a casing used in the CIP (Cast-in place pile) method for forming the earth block structure, the casing has a hollow therein And a cylindrical casing portion and a concave casing portion formed on one side of the cylindrical casing portion and having a concave portion. A through hole penetrating through the cylindrical casing portion and the concave casing portion is formed at the lower portion of the cylindrical casing portion, and an injection hole is provided at the side of the concave casing portion. The injection target formed in the injection hole is introduced into the cylindrical casing through the through hole.

The casing used in the CIP method according to another embodiment of the present invention for solving the above problems is a casing used in the CIP (Cast-in place pile) method for forming the earth block structure, the casing has a hollow inside A cylindrical casing portion, and a concave casing portion formed on one side of the cylindrical casing portion and having a concave portion, an injection hole is formed in a side of the concave casing portion, and a discharge hole is formed in a lower portion of the concave casing portion, and the injection target is injected into the injection hole. Enters the excavation hole through the discharge hole.

According to an embodiment of the present invention for solving the above problems, the earthquake tent structure is a mudguard structure including a casing used in the CIP method, the earthquake tent structure includes a plurality of casing located in a line, the earthquake tent When installing casings in line to form a structure, the recess of one of the neighboring casings abuts the side of the cylindrical casing of the other casing.

According to an embodiment of the present invention for solving the above problems, the construction method of the earthquake structure is a construction method of the earthquake structure using the casing used in the CIP method, and using a casing and a perforator to drill and excavate the ground in a line n Inserting n casings into the n digging holes while forming the excavation hole of the dog (n is a natural number), extracting the first casing located at the one side of the inserted n casings and simultaneously injecting cement mortar inserting the (n + 1) th casing into the (n + 1) th drilling hole while forming the (n + 1) th drilling hole to the side of the nth casing located on the other side of the n casings, and the n inserted Drawing a second casing from one side of the casing and injecting cement mortar at the same time, the (n + 2) th digging hole to the side of the inserted (n + 1) th casing Inserting the (n + 2) -th casing into the (n + 2) -th drilling hole while forming, and sequentially repeating the above procedure from the one side to the (n-1) -th casing among the n inserted casings, and then inserting Drawing the n-th casing from the most one of the n casings and injecting cement mortar at the same time, and forming the 2n-th drilling hole to the side of the inserted (2n-1) th casing and the 2n-th casing at the 2n-th drilling hole And inserting a recess, wherein the recess of one of the neighboring casings is in contact with the side surface of the cylindrical casing of the other casing.

According to the present invention, a separate order wall construction and grouting process is not required, and it is possible to provide a method for constructing a casing, an earthquake temporary structure, and an earthquake structure used in the CIP method, which can generate an earthquake structure in which a crack does not easily occur. .

1 is a view showing a casing used in the CIP method, according to an embodiment of the present invention.
2 and 3 is a view showing the earthquake tent construction structure according to an embodiment of the present invention.
4 is a view showing a casing used in the CIP method, according to another embodiment of the present invention.
5 is a flow chart of the construction method of earthenware structure according to an embodiment of the present invention.
6 to 12 is a view showing each step of the construction method of earthquake structure according to an embodiment of the present invention.

The present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, only the present embodiments to make the disclosure of the present invention complete, and having ordinary skill in the art to which the present invention pertains. It is provided to fully inform the person of the scope of the invention.

In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, the words "comprises" and / or "comprising" do not exclude the presence or addition of one or more other components, steps, or actions.

With reference to Figures 1 to 3, the casing and mud temporary structure used in the CIP method according to an embodiment of the present invention will be described. 1 is a view showing a casing used in the CIP method, according to an embodiment of the present invention. 2 and 3 is a view showing the earthquake tent construction structure according to an embodiment of the present invention.

1 to 3, the casing 50 used in the cast-in place pile (CIP) method according to an embodiment of the present invention, the cylindrical casing portion 10 and the concave casing portion 30 Include.

The cylindrical casing portion 10 is a cylindrical portion having a hollow 15 formed therein. Cylindrical casing portion 10 is press-fitted into the ground to install the earthmoving temporary structure consisting of the casing 50 and at the same time the boring machine 60 is inserted into the hollow 15 of the cylindrical casing portion 10 by inserting the boring machine 60 Can drill and drill the ground.

Meanwhile, a through hole 20 penetrating the cylindrical casing 10 and the concave casing 30 to be described later may be formed below the cylindrical casing 10.

In addition, a vibration transmission key 37 may be positioned on the side surface of the cylindrical casing 10, and press the casing 50 into the ground through the vibration driving, or press the casing 50 press-in through the vibrating drawer. When drawing from the ground, the vibration transmission key 37 can be used.

The concave casing portion 30 is formed on one side of the cylindrical casing portion 10 and is a portion having a concave portion 35 to a concave surface. The concave casing 30 may extend from or attach to the side of the cylindrical casing 10 to form an integral part with the cylindrical casing 10. On the other hand, the recessed part 35 of the recessed casing part 30 can take the shape which recessed toward the cylindrical casing part 10. As shown in FIG.

The concave casing portion 30 may be empty to include the flow space 45, and the flow space 45 may have both sides and the concave portion 35 of the concave casing portion 30 and the cylindrical casing portion ( It may be formed surrounded by the side of 10). Air or cement mortar may flow through the flow space 45.

In addition, an injection hole 40 may be formed at a side of the concave casing part 30, and an injection object such as air or cement mortar may be injected into the flow space 45 through the injection hole 40. . The injection hole 40 may be formed in each of the two sides, but the formation position and the number of the injection hole 40 may vary.

In addition, the air or cement mortar injected through the injection hole 40 may move downward while flowing the flow space 45, and thereafter pass through the cylindrical casing 10 and the concave casing 30. Passing through the 20 can be introduced into the cylindrical casing (10).

As such, the air through the mortar through the injection hole 40 and the through hole 20 is introduced into the hollow 15 of the cylindrical casing 10, and the air injected into the injection hole 40 is the through hole 20. Through) into the cylindrical casing 10 may be discharged to the outside of the casing (50).

Specifically, the earth and dust may be produced in the process of drilling and drilling the ground with the perforator 60 while pressing the casing 50, and the earth and sand may be discharged to the outside. In this process, the air injected into the injection hole 40 may facilitate the discharge of the earth and ground pulverized products generated while entering the cylindrical casing part 10 through the through hole 20 to the outside of the casing 50. As a result, it is possible to increase the working efficiency of the retaining structure.

By injecting air in this way to remove the earth and ground crushed in the lower portion of the drilling hole can prevent the casing 50 from being pushed, thereby preventing the concrete pillar 90 is tilted construction.

In addition, cement mortar is injected into the excavation hole to form the concrete pile or concrete pillar constituting the earthquake structure, and water may accumulate in the lower portion of the excavation hole due to groundwater, and such water dilutes the cement mortar. Cracks may occur in later formed concrete columns.

In order to solve this point, in the case of the present invention, the cement mortar can be injected into the excavation hole through the injection hole 40 and the through hole 20, and the cement mortar injected into the injection hole 40 is the through hole 20. Through the flow into the cylindrical casing 10, the water located in the interior of the cylindrical casing 10 can be discharged to the outside of the casing 50 to prevent the crack of the concrete pillar formed later.

Next, with reference to Figures 2 and 3, will be described the temporary construction structure containing the casing 50 described above. The temporary cladding structure can be seen as the formwork of the quack structure, which is the main heating wall composed of concrete columns.

The retaining temporary structure includes a plurality of casings 50 positioned in a row, and when installing the plurality of casings 50 in a row to form the retaining temporary structure, one casing 50 among neighboring casings 50 is provided. The concave portion 35 may be in contact with the side surface of the cylindrical casing portion 10 of the other casing 50.

In this regard, in the related art, when the main heat wall is formed by the CIP method, a construction step of reinforcing and filling the gap by grouting is provided on the front and rear surfaces of the boundary between the concrete pillars constituting the main heat wall to prevent the outflow and order of the soil. In addition, there has been a problem that the construction cost increases and the construction period becomes longer.

However, as described above, the casing 50 according to the present invention includes a cylindrical casing portion 10 and a concave casing portion 30, and thus, the casing 50 adjacent when the casing 50 is installed in a line. The concave portion 35 of one casing 50 may be in contact with the side surface of the cylindrical casing portion 10 of the other casing 50.

The main heat walls of the concrete columns generated through the casing 50 do not have a gap between the concrete columns constituting the main heat walls, and the order walls are naturally formed. Therefore, the order walls do not need to be constructed or grouted separately. Therefore, when using the casing 50 of the present invention, the construction cost can be reduced and the construction period can be shortened.

The casing used in the CIP method according to the embodiment of the present invention has been described above. Hereinafter, the casing used in the CIP method according to another embodiment of the present invention will be described with reference to FIG. 4. 4 is a view showing a casing used in the CIP method, according to another embodiment of the present invention.

Referring to FIG. 4, a casing 120 used in a cast-in place pile (CIP) method according to another embodiment of the present invention includes a cylindrical casing portion 80 and a concave casing portion 90. .

The cylindrical casing portion 80 is a cylindrical portion having a hollow 85 formed therein. Cylindrical casing portion 80 is press-fitted into the ground to install the earthquake temporary structure consisting of the casing 120 and at the same time the boring machine 60 is inserted into the hollow 85 of the cylindrical casing portion 80 by inserting Can drill and drill the ground.

In addition, a vibration transmission key 87 may be positioned on a side surface of the cylindrical casing 80, and presses the casing 120 into the ground through the vibration driving, or presses the casing 120 pressed through the vibrating type drawer. When drawing from the ground, the vibration transmission key 87 can be used.

The concave casing portion 90 is formed on one side of the cylindrical casing portion 80 and is a portion having a concave portion 95 to a concave surface. The concave casing portion 90 may extend from or attach to the side of the cylindrical casing portion 80 to form an integral portion with the cylindrical casing portion 80. On the other hand, the recessed part 95 of the recessed casing part 90 can take the shape which recessed toward the cylindrical casing part 80.

The concave casing portion 90 may be empty to include the flow space 110, and the flow space 110 may have both sides and the concave portion 110 of the concave casing portion 90 and the cylindrical casing portion ( It may be formed surrounded by the side of (80). Air or cement mortar may flow through the flow space 110.

In addition, an injection hole 100 may be formed at a side of the concave casing part 90, and an injection object such as air or cement mortar may be injected into the flow space 110 through the injection hole 100. . The injection hole 100 may be formed in each of the two sides, but the formation position and the number of the injection hole 100 may vary.

In addition, a discharge hole 25 may be formed in a lower portion of the concave casing 90, and an injection target such as air or cement mortar, which flows into the injection hole 100 through the discharge hole 25, may be an excavation hole. To the excavation progress area. That is, the air to the cement mortar may be supplied to the excavation hole or the excavation progress area while entering the flow space through the injection hole 100 and exiting through the discharge hole 25.

Meanwhile, although only one discharge hole 25 is shown in FIG. 4, the number of discharge holes 25 is not limited.

This is the part that is different from the casing 50 described above, that is, the casing 50 according to an embodiment of the present invention penetrates through the cylindrical casing portion 10 and the concave casing portion 30. While there is a ball 20, the casing 120 according to another embodiment of the present invention may have a discharge hole 25 formed below the concave casing portion 90 instead of the through hole 20.

In this way, the air through the cement mortar through the injection hole 100 and the discharge hole 25 is introduced into the excavation hole to the excavation progress area, the air injected into the injection hole 100 through the excavation hole 25 To the excavation progress area may be discharged to the outside of the casing to the ground to the casing 120.

Specifically, the earth and dust may be produced in the process of drilling and drilling the ground with the perforator 60 while pressing the casing 120, and the earth and sand may be discharged to the outside. In this process, the air injected into the injection hole 100 may facilitate the discharge of the earth and ground to be produced to the excavation hole to the excavation progress area through the through hole 25 to the outside of the casing 120. As a result, it is possible to increase the working efficiency of the retaining structure.

By injecting air in this way, by removing the earth and ground crushed in the lower portion of the excavation hole it is possible to prevent the casing 120 from being pushed, thereby preventing the concrete pillar is tilted construction.

In addition, cement mortar is injected into the excavation hole to form the concrete pile or concrete pillar constituting the earthquake structure, and water may accumulate in the lower portion of the excavation hole due to groundwater, and such water dilutes the cement mortar. Cracks may occur in later formed concrete columns.

In order to solve this point, in the case of the present invention, the cement mortar can be injected into the excavation hole through the injection hole 100 and the discharge hole 25, and the cement mortar injected into the injection hole 100 is discharge hole 25. Through) into the excavation hole or excavation progress area, the water located inside the excavation hole may be discharged to the outside of the casing 120 to prevent cracking of the concrete pillars formed later.

The casing and earthquake temporary construction structures used in the CIP method according to one embodiment and the other embodiments of the present invention have been described above. Hereinafter, a method of constructing an earthquake structure according to an embodiment of the present invention will be described with reference to FIGS. 5 to 12. 5 is a flow chart of the construction method of earthenware structure according to an embodiment of the present invention. 6 to 12 is a view showing each step of the construction method of earthquake structure according to an embodiment of the present invention.

As described below, the construction method of the earthquake structure uses a casing according to another embodiment of the present invention. However, even when the casing according to the embodiment of the present invention is used, the following construction process follows the same process as the construction method of the earthquake structure below. However, there is only a difference that the injection target passes through the through hole, not the discharge hole.

Referring to FIGS. 5 to 7, in the construction method of the earth block structure, n casings are installed in n excavation holes while forming n excavation holes in a line by drilling and digging the ground using a casing and a perforator. Inserting step (S10).

Specifically, while pressing the casing 120 to the ground by vibrating driving, such as to insert the punching machine 60 into the hollow 85 of the cylindrical casing portion 80 to drill and drill the ground. At this time, by connecting the air supply device 70 to the injection hole 100 of the concave casing unit 90 to inject air into the injection hole 100, the injected air moves to the lower portion of the flow space 110 Through the discharge hole 25 may enter the excavation hole or the excavation progress area to dispose of the earth and sand produced during the excavation process to the outside.

By repeating this process, n casings 120 can be inserted into n excavation holes while forming n excavation holes in a line by drilling and excavating the ground, and on the drawings, three excavation holes and The casing 120 is represented.

Referring to FIGS. 5 and 8, the construction method of the earthquake structure includes drawing a first casing located on one side of the inserted n casings and simultaneously injecting cement mortar (S20).

Specifically, the first casing 120 located on one side on the line among the n casings 120 inserted into the ground may be drawn out, and at the same time, cement mortar may be injected into the excavation hole to form a concrete column.

In the case of the present invention by connecting the mortar supply device 130 to the injection hole 100 of the concave casing portion 90 to inject cement mortar into the injection hole 100, the cement mortar injected into the injection hole 100 The silver flows into the excavation hole or the excavation progress area through the discharge hole 25, and the cement mortar may be injected into the excavation hole.

Cement mortar injected into the excavation hole in this process can prevent the crack of the concrete pillar formed later by discharging the water to the outside when the excavation hole has water.

On the other hand, such cement mortar injection may be injected directly into the hollow 85 from the upper portion of the cylindrical casing portion 80, the cement mortar injection method may vary depending on the situation.

In addition, a vibrating drawer may be used to draw out the casing 120, and as the vibrating drawer is used, voids between the injected cement mortar disappear and the cement mortar is densely accumulated from the bottom, resulting in concrete to be produced later. It is possible to prevent cracks in the column.

In addition, before the cement mortar is injected, the core material such as the H pile and the rebar mesh may be inserted into the excavation hole through the hollow 85 of the cylindrical casing part 80, but the core material insertion process and the type of the core material to be inserted may be optional. Can be.

5, 9 and 10, the construction method of the earth block structure, the (n + 1) th excavation while forming the (n + 1) digging holes to the side of the n th casing located on the other side of the n casing inserted And inserting the (n + 1) th casing into the ball (S30).

Specifically, after drawing the first casing 120 located on the most side, and at the same time injecting cement mortar into the excavation hole to form a concrete pillar to form a concrete pillar, the other casing 120 inserted in the most other side The (n + 1) th casing 120 is inserted into the (n + 1) th excavation hole while forming the (n + 1) th excavation hole in the same manner as described above. .

Referring to FIGS. 5 and 11, the method for constructing an earth block structure includes injecting cement mortar while simultaneously drawing a second casing from one side of the n inserted casings (S40).

Specifically, after inserting the (n + 1) th casing 120 into the (n + 1) th drilling hole while forming the (n + 1) th drilling hole, the n casings 120 inserted in the above manner are inserted. While drawing the second casing 120 from one side of the most while cement mortar is injected to form a concrete column.

Referring to FIGS. 5 and 12, the construction method of the masonry structure includes forming (n + 2) th drilling holes to the (n + 2) th drilling holes to the side of the inserted (n + 1) th casing. ) Inserting the th casing (S50).

Specifically, to the side of the inserted (n + 1) th casing 120, the (n + 2) th excavation hole is formed in the (n + 2) th excavation hole in the same manner as described above. Insert the first casing 120.

In this way, after repeating the above process from the one side of the inserted n casing to the (n-1) th casing sequentially, drawing the n-th casing from the one side of the inserted n casing while injecting cement mortar at the same time (S60).

In addition, the step (S70) of inserting the 2n-th casing in the 2n-th drilling hole while forming the 2n-th drilling hole to the side of the inserted (2n-1) -th casing.

On the other hand, in the case of a plurality of casings 120 installed during this process, the concave portion 95 of one casing 120 among the neighboring casings 120 is the side of the cylindrical casing portion 80 of the other casing 120. It can be contacted.

In other words, according to the present invention, the construction method of the earthquake structure according to the present invention first forms n excavation holes (n = 3 on the drawing), and installs n casings 120 in the n excavation holes, and then from one side on a line. Removing the casing 120 to create a concrete column, and at the same time take a way to install the casing 120 while forming an excavation hole in the side direction of the other side on the line.

At this time, each time one concrete column is formed, a new drill hole is additionally formed and the casing 120 is installed.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

10, 80: cylindrical casing 15, 85: hollow
20: through hole 25: discharge hole
30, 90: recessed casing 35, 95: recessed
40, 100: injection hole 45, 110: flow space
50, 120: casing 60: perforator
70: air supply device 130: mortar supply device

Claims (10)

As a casing used in the cast-in place pile (CIP) method to form the earth block structure,
The casing is,
A cylindrical casing portion having a hollow inside; And
A concave casing portion formed on one side of the cylindrical casing portion and having a concave portion;
A through hole penetrating the cylindrical casing portion and the concave casing portion is formed below the cylindrical casing portion.
Injection holes are formed in the side of the concave casing portion,
An injection object injected into the injection hole is used for the CIP method introduced into the cylindrical casing through the through hole. As a casing used in the cast-in place pile (CIP) method to form the earth block structure,
The casing is,
A cylindrical casing portion having a hollow inside; And
A concave casing portion formed on one side of the cylindrical casing portion and having a concave portion;
Injection holes are formed in the side of the concave casing portion, discharge holes are formed in the lower portion of the concave casing portion,
The injection target injected into the injection hole is used for the CIP method introduced into the drilling hole through the discharge hole. The method of claim 1,
The injection target is air,
The air injected into the injection hole is used in the CIP method for discharging the earth and ground to the outside of the casing while flowing into the cylindrical casing through the through hole. The method of claim 2,
The injection target is air,
The air injected into the injection hole is used in the CIP method for discharging the earth and ground to the outside of the casing while entering the excavation hole through the discharge hole. The method of claim 1,
The injection target is cement mortar,
The cement mortar injected into the injection hole is introduced into the cylindrical casing part through the through hole, and used for the CIP method for discharging water located inside the cylindrical casing part to the outside of the casing. The method of claim 2,
The injection target is cement mortar,
Cement mortar injected into the injection hole is introduced into the drilling hole through the discharge hole, the casing used in the CIP method for discharging the water located inside the drilling hole to the outside of the casing. The method according to claim 1 or 2,
The casing used for the CIP method of contacting the side surface of the cylindrical casing part of the other casing among neighboring casings when installing the casing in a line to form the retaining structure. A clamshell temporary structure comprising a casing used in a CIP method according to claim 1 or 2,
The earthenware temporary structure,
A plurality of said casings positioned in line,
And the recess of one casing among neighboring casings is in contact with the side surface of the cylindrical casing of the other casing when the casings are installed in a line to form the temporary scaffolding structure. As a method of constructing an earth block structure using a casing used in a CIP method according to claim 1 or 2,
Inserting n casings into the n excavation holes while forming n excavation holes (n is a natural number) by drilling and digging the ground using the casing and the perforator;
Drawing a first casing positioned on one side of the n inserted casings and simultaneously injecting cement mortar;
Inserting an (n + 1) -th casing into the (n + 1) -th excavation hole while forming an (n + 1) -th excavation hole in the side of the n-th casing located on the other side among the n casings inserted;
Drawing a second casing from one side of the inserted n casings and simultaneously injecting cement mortar;
Inserting the (n + 2) th casing into the (n + 2) th drilling hole while forming the (n + 2) th drilling hole to the side of the inserted (n + 1) th casing;
Sequentially repeating the above process from the one side of the inserted n casings to the (n-1) th casing, and injecting cement mortar while simultaneously drawing the nth casing from the one side of the inserted n casings ; And
Inserting a 2nth casing into the 2nth excavation hole while forming a 2nth excavation hole to the side of the inserted (2n-1) th casing,
A method of constructing an earth block structure in which a recess of one casing is in contact with a side surface of a cylindrical casing of another casing among neighboring casings. The method of claim 9,
A construction method of earth block structure that draws out a casing using a vibrating drawer.

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