KR102184081B1 - Construction method for perforating goround bore using inverse casing - Google Patents

Abstract

The present invention relates to a ground perforating method for maintaining verticality of ground perforations and installing a cofferdam. One embodiment of the present invention provides the ground perforating method, which comprises: a ground perforation forming step of forming the ground perforations by using a casing; a reverse casing penetrating step of allowing a reverse casing to penetrate into the ground perforations; a post ground perforation forming step of forming post ground perforations after the ground perforations into which the reverse casing penetrates; a post reverse casing penetrating step of allowing the reverse casing to penetrate into the post ground perforations; and a repetitive ground perforation forming step of repeating the post ground perforation forming step and the post reverse casing penetrating step with respect to the remaining ground perforations to be constructed.

Description

Ground drilling method using reverse casing {CONSTRUCTION METHOD FOR PERFORATING GOROUND BORE USING INVERSE CASING}

The present invention relates to a ground perforation method, and more particularly, in the case of forming a back ground perforation by overlapping with a pre-formed ground perforation previously formed in the ground, a reverse casing for accurately and efficiently performing the post ground perforation operation is provided. It relates to the ground drilling method used.

Wall steel pipe piles or “rectangular square pipes” disclosed in Patent Application No. 10-2018-01278445, which is the first applicant of the present application, provides both a pile foundation and a temporary barrier (order wall) on a soft ground with a deep depth or a coastal area with a deep depth. It is mainly used for construction. In addition, these wall steel pipe piles are also used in offshore construction projects such as bridges, roads, and railroads in which vertical and lateral loads work together.

Temporary barriers or soil barriers using such wall steel pipe piles or “rectangular square pipes” are connected to the wall steel pipes or sheet piles after forming a ground perforation using a drilling equipment along the perimeter of the installation area. The ordering method of completing the ordering wall, the SPSP (Steel Pipe Sheet Piles) ordering method, which combines the fasteners and inserts the steel pipes into the ground by drilling or driving the steel pipes, and then injecting non-shrinkable mortar to join the steel pipes It is installed using a variety of orders such as forming method or earthing method.

1 is a view schematically showing a water ground drilling process for forming a temporary barrier in water in the prior art described above.

The ground drilling process for the installation of the temporary barrier is performed by placing the casing 10 such as a steel pipe-type wall steel pipe at the ground drilling position to the upper region of the rock layer (e.g., the upper part of the weathered rock layer, etc.) as shown in Fig. 1(a). Then, by inserting the drilling drill 13 of the drilling equipment into the interior of the casing 10 to perform the drilling to form a ground drilling (15, see Fig. 1 (b)). In this process, the casing 10 maintains the direction of the ground perforation.

While performing the above-described ground drilling, when the drilling drill 13 passes through a soil layer such as a shelf layer and reaches a bedrock layer including weathered rock, soft rock, or hard rock, it is drilled to break the bedrock layer and perform a ground drilling. After forming the ground perforation 15 having the target depth as shown in (b) of 1, the casing 10 is taken out. Thereafter, by moving the casing 10 and the drilling drill 13 to a position adjacent to the formed ground drilling 15, and repeatedly performing the above-described ground drilling process in a state of overlapping with the previously formed ground drilling. It forms ground perforations.

However, in the case of the above-described conventional ground drilling construction process, in the case of performing a ground drilling operation for forming an additional ground drilling by overlapping a predetermined area with the previously formed ground drilling 15, the lateral external force due to the drilling operation or the rock mass The position of the casing 10 or the drilling drill may be moved in the lateral direction due to the repulsive force, etc., and in this case, the ground hole formed later is not formed parallel to the first formed ground hole 15 because it does not have a desired verticality. It can go wrong. In addition, the crushed crushed rock 13 during perforation or driving of the rock layer may be introduced into the region of the pre-formed ground perforation 15, making it difficult to perform a subsequent process.

That is, in the case of performing a later ground drilling by overlapping a predetermined area with the first ground drilling 15, it is not possible to prevent the inflow of crushed rock into the previously formed ground drilling 15, and the casing 10 that is newly penetrated It is still difficult to ensure verticality as no means for supporting) is provided from lateral external forces.

Korean Patent Registration No. 10-0923078 Korean Patent Registration No. 10-0496619

Therefore, one embodiment of the present invention for solving the problems of the prior art described above, after forming a pre-ground perforation in the ground, and then overlapping with the pre-ground perforation to form a post-ground perforation, by supporting the casing By keeping the direction of the ground drilling constant during the process, the post-ground drilling work can be performed accurately and efficiently, so that the verticality of the ground drilling can be maintained. It is an object to be solved to provide a ground drilling method using an inverted casing that blocks the inflow and makes it easy to perform the post process.

An embodiment of the present invention for achieving the above-described problem of the present invention, a ground hole forming step of forming a ground hole using a casing; A reverse casing penetration step of penetrating the reverse casing into the ground perforation; A step of forming a back ground perforation after the ground perforation through which the reverse casing is penetrated; A step of penetrating the reverse casing into the ground perforation and then penetrating the reverse casing; And it provides a ground perforation method comprising a; and a repeating ground perforation forming step of repeatedly performing the step of forming the post perforation and the step of penetrating the back casing with respect to the remaining perforations to be constructed.

In the step of forming the ground perforation, the casing is positioned to be inserted into the reverse casing groove of the reverse casing, and the subsequent ground perforation is formed so as to be continuously adjacent to the previously formed ground perforation.

In the case of performing the subsequent ground drilling by overlapping with the first ground drilling, the step of forming the ground perforation may include penetrating the casing, and then filling the vertical cavity formed in the overlapping region corresponding to the reverse casing groove with filled soil. It is characterized in that it is performed after one.

The step of forming a ground perforation is characterized in that it is performed at a position after one or more ground perforation position intervals of the ground perforation formed in the step of forming the ground perforation.

The ground drilling method includes, after the reverse casing penetration step, an intermediate ground drilling and reverse casing penetration step of forming a ground drilling at a position between the ground drilling spaced apart from each other and penetrating the reverse casing; further It characterized in that it is configured to include.

The ground drilling method is characterized in that it further comprises a step of removing the reverse casing after the ground drilling of removing the reverse casing previously penetrated after the after the reverse casing penetration step is performed.

The ground drilling method is characterized in that it further comprises a step of removing the reverse casing after construction of removing the reverse casings after the construction of the ground drilling is completed.

The reverse casing penetrated in the reverse casing penetration step and after the reverse casing penetration step includes: a casing pipe portion having an inverted casing groove along the length direction of the pipe; And an inverted casing tube portion formed by joining an arc-shaped plate member to the inverted casing groove so that the convex surface faces the inside of the tube.

The reverse casing pipe portion is characterized in that the circular arc-shaped plate member cut to form the reverse casing groove of the pipe is formed by being joined to the reverse casing groove so that the convex surface faces the inside of the pipe.

The reverse casing pipe portion is characterized in that it is formed of an arc-shaped plate-shaped member having a radius of curvature equal to that of the casing pipe portion.

The reverse casing pipe portion is characterized in that it is formed of an arc-shaped plate-shaped member having a radius of curvature smaller than the radius of curvature of the casing pipe portion.

The reverse casing pipe portion is characterized in that it is formed of an arc-shaped plate-shaped member having a radius of curvature greater than that of the casing pipe portion.

The arc-shaped plate member forming the casing pipe portion and the reverse casing pipe portion is manufactured by any one of rolling, bending, press forming, or casting processes.

The ground drilling method is characterized in that it further comprises a step of installing reinforcing bars in the ground drilling heat for installation of a reinforced concrete barrier after the ground drilling heat is formed.

According to the present invention having the above-described configuration, in the case of forming a pre-ground perforation in the ground and then overlapping with the pre-ground perforation to form a post-ground perforation, by maintaining a constant direction of the ground perforation during the ground perforation process. By allowing the ground drilling work to be performed accurately and efficiently, it is possible to maintain the verticality of the ground drilling afterwards, and by blocking the inflow of rock crushed matter into the inside of the previously formed ground drilling work, it is a temporary barrier or dirt barrier after completion of the ground drilling work. It provides the effect of making it easy to perform post-processing such as installation.

1 is a view schematically showing a water surface drilling process for forming a temporary barrier in water in the prior art described above.
Figure 2 is a flow chart of a ground drilling method using the reverse casing of an embodiment of the present invention.
Figure 3 is a perspective view of an inverse casing 100 for ground drilling according to an embodiment of the present invention.
4 is a plan view of an inverted casing 100 provided with an inverted casing tube portion 120 having the same radius of curvature as the casing tube portion 110. FIG.
5 is a plan view of an inverted casing 100 having an inverted casing tube portion 120 having a radius of curvature smaller than that of the casing tube portion 110. FIG.
6 is a plan view of an inverted casing 100 having an inverted casing tube portion 120 having a radius of curvature larger than that of the casing tube portion 110. FIG.
7 is a flow chart of a method of manufacturing an inverted casing according to an embodiment of the present invention.
8 is a diagram showing a process of manufacturing an inverted casing according to an embodiment of the present invention.
9 is a view showing a ground perforation forming process using the reverse casing (100, 100-1,.., 100-n) of an embodiment of the present invention.
10 is a view showing a state in which the first reverse casing 100-1 is fixed using a stopper 20 when the second ground perforation 15-2 is formed.
11 is a view showing the constructed closed curve type ground perforation heat 150.
12 is a view showing the constructed straight (a) and curved (b) ground perforation heat 150.
13 is a view showing one embodiment of a temporary barrier, a water barrier, or a dirt barrier.

In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted.

Since the embodiments according to the concept of the present invention can apply various changes and have various forms, specific embodiments will be illustrated in the drawings and will be described in detail in the present specification or application. However, this is not intended to limit the embodiments according to the concept of the present invention to a specific form of disclosure, and the present invention should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. Should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle. Other expressions describing the relationship between components, such as "between" and "just between" or "adjacent to" and "directly adjacent to" should be interpreted as well.

The terms used in the present specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present specification, terms such as "comprise" or "have" are intended to designate the presence of a set feature, number, step, action, component, part, or combination thereof, but one or more other features or numbers It is to be understood that the possibility of addition or presence of, steps, actions, components, parts, or combinations thereof is not preliminarily excluded.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings showing embodiments of the present invention.

In the description of the embodiment of the present invention, when the ground perforation and the subsequent ground perforations are collectively referred to or regardless of the order, reference numerals "15" are indicated, and when the ground perforations are referred to in order, reference numerals '15-1, 15-2' ,...'.

In the description of the embodiment of the present invention,'reverse casing' means'a pipe that penetrates the formed ground perforation by providing an inverted casing pipe part 120 to support an adjacent casing when performing a ground perforation in a rock layer. , When collectively referring to'inverted casing', reference numeral '100' is indicated, and when referring to inverse casing in order, reference numeral '100-1, 100-2,...'

2 is a flow chart of a ground drilling method using an inverted casing according to an embodiment of the present invention.

As shown in Figure 2, the ground drilling method using the reverse casing of an embodiment of the present invention, the ground drilling to form a ground drilling (15 (15-1), see Figure 9) using the casing (10, see Figure 3) Forming step (S10), reverse casing penetration step (S20) of penetrating the back casing (100, see FIGS. 3 and 9) into the ground perforation 15, ground perforation 15 into which the back casing 100 is penetrated -1) After forming the following ground perforation (15-2) and then forming a ground perforation step (S30), a reverse casing (100 (100-2), see Fig. 9) in the after ground perforation (15-2) After intrusion, repeating the back casing intrusion step (S40) and the subsequent back casing intrusion step (S30) and the back casing intrusion step (S40) for the remaining ground perforations (15) to be constructed are repeated. It characterized in that it is configured to include (S50).

After the ground perforation forming step (S30), the area corresponding to the reverse casing groove 111 (see FIGS. 3 and 9) penetrated into the previously formed ground perforation 15 has an overlapping interval, In the case of forming a perforation (15 (15-2), see Fig. 9), the casing (see Figs. 3 and 9) in the reverse casing groove 111 of the reverse casing 100 inserted in the pre-formed ground perforation 15 After positioning 10) to be inserted, it may be a step of forming a subsequent ground perforation (15 (15-2), see FIG. 9) so as to be continuously adjacent to the previously formed ground perforation.

In contrast, in the post-ground perforation forming step (S30), after forming the ground perforations 15 apart by one or more ground perforations, they are formed on both sides in the intervening area, and then the ground perforations overlap a certain area with the ground perforations. (It may be a step of forming 15(15-3).

When the post-ground drilling forming step (S30) is performed at a location spaced apart by one or more ground drilling location intervals, the ground drilling method of an embodiment of the present invention, after the reverse casing penetration step (S40), is spaced apart from each other. The intermediate ground perforation and reverse casing penetration step (S43) of forming a ground perforation so as to overlap a certain area at a position between the ground perforation 15 and the back ground perforation 15 (15-2) and penetrating the reverse casing are further performed. It may be configured to include. That is, in the ground perforation method of an embodiment of the present invention, after one ground perforation is formed, the back ground perforation 15 is formed at a position having one or more ground perforation intervals, and adjacent to the ground perforation. It may be configured to form additional ground perforations overlapping a certain area with the first ground perforations formed in the space between the ground perforations. To explain this by way of example, in the case of assigning numbers to ground perforations completed in order (see Fig. 11), ground perforations are formed alternately in the order of 1, 3, 2, 4, 6, 5,... Alternatively, 1, 4, 2, 3, 7, 5, 6, 10, 8, 9, .... may be formed by crossing the order by alternately forming ground perforations in order. Ground perforations formed between the ground perforation and the adjacent ground perforation may also be formed by crossing the sequence as described above.

After the above-described, when performing the ground perforation forming step (S30), a vertical cavity 30 (refer to FIG. 10) formed by overlapping in a region corresponding to the first-formed ground perforations and the reverse casing groove is formed. In the case of including the casing 10, the vertical cavity 30 is filled with the filled soil 31, and then ground drilling is performed. The filling of the filled soil 31 in the vertical cavity 30 to perform ground drilling will be described in more detail in the description of FIG. 9 below.

In addition, the ground drilling method of an embodiment of the present invention, after the back casing penetration step (S40) is performed, and the back casing removal step (S45) after ground drilling to remove the previously penetrated back casing 100 (S45) It may be configured to further include.

Alternatively, the ground drilling method according to an embodiment of the present invention may further include a post-construction reverse casing removal step (S55) of removing the reverse casings 100 after construction of the ground drilling is completed.

That is, the ground drilling method of an embodiment of the present invention may selectively include the step of removing the reverse casing after the ground drilling (S45) and the step of removing the reverse casing after construction (S55) according to the working environment and situation.

In addition, in the ground drilling method of an embodiment of the present invention, the intruded reverse casing 100 may be applied as a wall steel pipe.

3 is a perspective view of an inverted casing 100 for ground drilling construction according to an embodiment of the present invention.

As shown in Figure 3, the reverse casing 100 of an embodiment of the present invention, in the present invention'when performing the ground drilling, to support the casing 10 inserted in order to perform the ground drilling by overlapping a predetermined area with the ground hole formed first For the reverse casing pipe portion 120 means a pipe formed) is formed of a steel pipe casing pipe 101 (see FIGS. 3 and 8). Specifically, the reverse casing 100 has a casing pipe portion 110 having an inverted casing groove 111 along the longitudinal direction of the casing pipe 101 and the convex surface in the reverse casing groove 111 is the pipe 101 It characterized in that it is configured to include an inverted casing pipe portion 120 formed by bonding the arc-shaped plate-shaped member 121 to face the inside of ).

The configuration of reference numeral 101 indicated by the dotted circular arc in FIG. 3 indicates the pipe 101 before the formation of the arc-shaped groove 111, and the reference numeral 121 denotes an arc-shaped plate member 121 cut from the pipe 101 Represents.

The reverse casing pipe part 120 configured as described above may be formed to have various radii of curvature.

4 is a plan view of an inverted casing 100 having an inverted casing tube portion 120 having the same radius of curvature as the casing tube portion 110, and FIG. 5 is an inverted casing tube portion having a smaller radius of curvature than the casing tube portion 110 ( It is a plan view of the reverse casing 100 provided with 120, and FIG. 6 is a plan view of the reverse casing 100 provided with the reverse casing pipe part 120 which has a larger radius of curvature than the casing pipe part 110.

As shown in Figure 4, the reverse casing pipe portion 120 has the same radius of curvature as the casing pipe portion 110 and joins an arc-shaped plate member 121 having a width corresponding to the inverted casing groove 111 by welding, etc. Can be formed by

In this case, the arc-shaped plate-shaped member 121 may be formed by cutting a part of the tube 103 having the same diameter as that of the casing tube portion 110. In addition, the arc-shaped plate member 121 may be a part of a pipe cut from the pipe 101 to form the reverse casing groove 111, as shown in FIG. 3.

As shown in FIG. 5, the reverse casing pipe part 120 may be formed of an arc-shaped plate member 121 having a radius of curvature smaller than that of the casing pipe part 110. In this case, the arc-shaped plate member 121 is formed by cutting a part of the tube 105 having a diameter smaller than the diameter of the casing tube portion 110.

As shown in FIG. 6, the reverse casing pipe part 120 may be formed of an arc-shaped plate member 121 having a radius of curvature greater than that of the casing pipe part 110. In this case, the arc-shaped plate-shaped member 121 is formed by cutting a part of the pipe 107 having a diameter larger than the diameter of the casing pipe portion 110.

7 is a flow chart of a method of manufacturing an inverted casing according to an embodiment of the present invention, and FIG. 8 is a view showing a process of manufacturing an inverted casing in an embodiment of the present invention.

7 and 8, the method of manufacturing an inverted casing for ground drilling for installation of a temporary barrier according to an embodiment of the present invention includes a casing pipe portion 110 having an inverted casing groove 111 along the length direction of the pipe 101 The casing pipe portion forming step (S10) of forming a and an inverted casing pipe portion forming an inverted casing pipe portion 120 by joining an arc-shaped plate member 121 concavely inward of the pipe to the inverted casing groove 111 It characterized in that it comprises a forming step (S20).

In the casing pipe part forming step (S10), a part of the pipe 101 corresponding to the reverse casing groove 111 is cut along the length direction as shown in FIGS. 8A and 8B, and the casing pipe part It may be a step of forming (110).

In the step of forming the reverse casing pipe part (S20), an arc-shaped plate member 121 having a radius of curvature equal to the radius of curvature of the casing pipe part 110 is joined so that the convex surface faces the inside of the pipe, and the reverse casing pipe part It may be a step of forming (120). In this case, the arc-shaped plate-shaped member 121 is formed by cutting a part of the pipe 101 to be the reverse casing groove 111 along the length direction, as shown in FIGS. 8C and 8D. In this case, in the step of forming the reverse casing pipe part (S20), the convex surface of the arc-shaped plate member 121 formed as described above faces the inside of the pipe 101 or the casing pipe part 110. It may be a step of forming the reverse casing pipe part 120 by bonding to the reverse casing groove 111 by welding or the like.

In contrast, the arc-shaped plate-shaped member 121 may be formed by cutting a portion of the pipe 103 having the same diameter as the diameter of the casing pipe 110, as shown in FIG. 4. In this case, in the step of forming the reverse casing pipe part (S20), an arc-shaped plate member 121 formed by cutting a part of the pipe 103 having the same diameter as the diameter of the casing pipe part 110 is formed into the pipe 101 Alternatively, it may be a step of forming the reverse casing pipe part 120 by bonding to the reverse casing groove 111 by welding or the like so as to face the inside of the casing pipe part 110.

On the contrary, in the step of forming the reverse casing pipe part (S20), the convex surface of the arc-shaped plate member 121 having a radius of curvature (small diameter) smaller than the radius of curvature (diameter) of the casing pipe part 110 ( 101) Alternatively, it may be a step of forming the reverse casing pipe part 120 by bonding to the inside of the casing pipe part 110. In this case, the arc-shaped plate member 121 is formed by cutting a part of the pipe 105 having a diameter smaller than the diameter of the casing pipe portion 110 as shown in FIG. 5. In this case, in the step of forming the reverse casing pipe part (S20), an arc-shaped plate member 121 formed by cutting a part of the pipe 105 having a diameter smaller than the diameter of the casing pipe part 110 is formed into the pipe 101 Alternatively, it may be a step of forming the reverse casing pipe part 120 by bonding to the reverse casing groove 111 by welding or the like so as to face the inside of the casing pipe part 110.

In contrast, in the step of forming the reverse casing pipe part (S20), the convex surface of the arc-shaped plate member 121 having a radius of curvature greater than the radius of curvature (diameter) of the casing pipe part 110 is the pipe 101 or the casing. It may be a step of forming the reverse casing pipe part 120 by bonding so as to face the inside of the pipe part 110. In this case, the arc-shaped plate member 121 is formed by cutting a part of the pipe 107 having a diameter larger than the diameter of the casing pipe portion 110 as shown in FIG. 6. In this case, in the step of forming the reverse casing pipe part (S20), an arc-shaped plate member 121 formed by cutting a part of the pipe 107 having a diameter larger than the diameter of the casing pipe part 110 is formed into the pipe 101 Alternatively, it may be a step of forming the reverse casing pipe part 120 by bonding to the reverse casing groove 111 by welding or the like so as to face the inside of the casing pipe part 110.

In the description of an exemplary embodiment of the present invention described above, it has been described that the casing pipe portion 110 and the arc-shaped plate member 121 are formed by cutting a portion of the pipes 101, 103, 105, and 107. The casing pipe portion 110 and the arc-shaped plate member 121 are manufactured by forming a plate-shaped steel member into the casing pipe portion 110 and the arc-shaped plate member 121 by rolling, bending, or press forming. Or it may be produced by a casting process or the like.

9 is a view showing a ground drilling construction process using the reverse casing (100, 100-1,.. ,100-n) of an embodiment of the present invention, Figure 10 is the formation of the second ground drilling (15-2) It is a diagram showing a state in which the first reverse casing 100-1 is fixed using a stopper 20, FIG. 11 is a view showing a closed curve type ground perforation heat 150, and FIG. 12 is a straight line ( a) and curved (b) is a diagram showing the ground perforation heat 150.

Ground drilling method of an embodiment of the present invention, when forming the ground drilling 15 on the ground, bottom or sea bottom using the reverse casing 100 having the above-described configuration, auger, screw drill, perforation drill After installing the casing 10 in a rock drilling equipment (not shown) equipped with a drilling drill 13 such as the back, the casing 10 is penetrated to the upper area of the rock layer, and a drilling drill ( 13) is inserted to form a first ground hole 15-1 having a target depth by drilling such as a hammer ring.

Thereafter, the casing 10 is pulled out and removed, and the first reverse casing 100-1 is driven into the formed first ground hole 15-1 to penetrate to the bottom surface of the first ground hole 15-1. In this case, the first inverted casing 100-1 is formed by selecting and intruding the inverted casing pipe portion 120 having a radius of curvature corresponding to the diameter of the second ground perforation 15-2 to be formed. It is possible to continuously form ground perforations of various diameters having different diameters and overlapping regions.

Next, after penetrating the new casing 10 to the top of the rock layer at the location of the second ground drilling (15-2), the same operation as the process of forming the first ground drilling (15-1) was performed to A perforation (15-2) is formed. In this case, the first reverse casing (100-1) penetrated into the pre-formed ground perforation (15-1) is supported, and the casing (10) is side by the vibration generated during the ground perforation to form the second ground perforation. In order to prevent the position from being moved in the direction, as shown in FIG. 10, the first reverse casing 100-1 may be fixed with a stopper 20. The stopper 20 is fixed to the top of the first reverse casing 100-1 by welding or bolting, and after the ground drilling at an adjacent position and driving penetration of the reverse casing 100 are finished. Is configured to be easily removed. At this time, the stopper 20 is configured to support the reverse casing 100-1 and the casing 10 penetrated by driving. To this end, the stopper 20, as shown in Figure 10 (a), the ground perforations 15 are formed concentrically along the circumference of the outer diameter and the inner diameter two side support consisting of two circular frames It may be configured to include a perforation direction support member 23 detachably installed to the side support member 21 to support the reverse casing 100 or the casing 10 penetrated with the member 21 in the perforation direction. have. According to the above-described configuration, when the inverse casing 100 is penetrated after the ground drilling is performed, as shown in FIG. By installing, it supports so that the reverse casing 100 penetrated by driving penetration does not move. In the case of performing a new ground drilling after the intrusion of the reverse casing 100 is finished, as shown in (b) of FIG. 10, after removing the support member 23 in the perforation direction, the casing 10 ) Is supported so that a new ground drilling can be performed, so that the verticality of the intruding reverse casing 100 and the casing 10 can be secured.

The casing 10 is inserted into the reverse casing groove 111 of the first reverse casing 100-1 so that the facing surface of the first reverse casing 100-1 is inserted into the reverse casing groove 111. It is supported so that the verticality is maintained. In addition, in the process of forming the second ground hole by the first reverse casing (100-1), the crushed rock (17, see FIG. 1), etc., flows into the inside of the first ground hole (15-2). Is prevented. After the second ground perforation (15-2) is formed by the above-described process, the casing (10) is pulled out and removed, and then the second reverse casing (100-2) is driven into the second ground perforation (15-3) and penetrated. Let it.

After that, the ground drilling process of forming the above-described second ground drilling 100-2 is repeatedly performed at the location of the third ground drilling 15-3 to form a ground drilling.

In the case of forming a ground perforation after a new ground perforation at a location spaced apart by an interval corresponding to one or more ground perforations (corresponding to the later ground perforation formation step (S10)), In the spaced space between the ground perforation and the back ground perforation by performing the intermediate ground perforation and reverse casing penetration step (S43) of forming ground perforations at a location between the spaced ground perforation and the back perforation and penetrating the reverse casing. Form ground perforations.

After the above-described ground perforation formation step (S30) or when performing the intermediate ground perforation and reverse casing penetration step (S43), after forming the ground perforation 15 (15-1), as shown in Figure 10 (b) The casing 10 is used to continuously form the back ground perforations (15(15-2)), or the ground perforations 15 are separated by one or more ground perforations as shown in FIG. After the casing 10 is penetrated to the upper part of the rock layer in the region, a back ground hole is formed in a state that overlaps the previously formed ground holes 15-1 and 12 and the area corresponding to the reverse casing groove 11. At this time, The vertical cavities 30 formed in the region overlapping with the casing 10 inserted for the newly formed ground drilling and corresponding to the reverse casing groove 11 of the previously formed ground drilling 151, 15-2 have slime ( In order to secure the discharge pressure (suction pressure) of the slime), sand, high-quality soil, or slime including soil of the same terrain discharged during the formation of the ground hole is filled with the filling soil 31 to perform the ground drilling. By filling the filled soil 31 in the vertical cavity 30 inside the casing 10, the vertical cavity 30 prevents loss of upward suction pressure for removal of crushed rock, etc., thereby discharging slime. By making it possible to perform smoothly, the ground drilling process can be efficiently performed.

The reverse casings (100-1, .., 100-n) are removed after the reverse casing 100 is penetrated at the location of the adjacent ground drilling (removing the reverse casing after ground drilling (S45)), or the ground drilling is After completion, it can be removed at the same time (removing the reverse casing after construction (S55). In addition, before the pull-out removal of the reverse casings 100-1,...,100-n, concrete mixed with waterproofing material on the underwater floor, etc. Filling material such as non-shrinkable mortar to form a temporary barrier into the ground perforations (15, 15-1,...,15-n) formed when the foundation is poured to form the bottom of the inverted casing or removed May be filled.

11 and 12, the ground drilling heat 150 formed by the ground drilling method of an embodiment of the present invention is a closed curve such as a circle (see FIG. 11), a straight line (see FIG. 12 (a)), or a curve (FIG. 12 (b)).

And after the ground perforation column 150 is formed, the wall steel pipes 210 may be penetrated into each of the ground perforations. In this case, the wall steel pipes 210 may be formed of reverse casings 100 penetrated into the ground perforations 15. After that, by welding or fastening bolts, the ring beam 230 is fixed to support the inner side of the wall steel pipes 210, and a connection member 220 is installed in the area between the wall steel pipes 210 to install a temporary barrier. There will be. For the installation of the above-described temporary barrier, the steel pipe is ground-perforated by combining the temporary barrier installation method, H-beam ordering method, and fasteners using “rectangular square pipes” disclosed in patent application No. 10-2018-01278445 of the applicant of the present application. After driving and intruding, various well-known methods such as the SPSP (Steel Pipe Sheet Piles) order method of bonding the steel pipes by injecting a non-shrinkable mortar, and the method of forming columns, etc. can be applied.

13 is a diagram illustrating an example of a temporary barrier, a water barrier, or a dirt barrier.

As shown in Figure 13, the temporary barrier, the water barrier or the earthen barrier is a PP type in which the connecting ring pipes (P) integrally formed in the wall steel pipe 210 are inserted and coupled to each other in a staggered manner (FIG. 13 (a)), a connecting ring LT type (Fig. 13(b)) in which a T-shaped ring beam (T) is inserted into the inside of each tube (L), and a PT type in which a T-shaped ring beam is inserted into the inside of the connecting ring tube is connected (Fig. 13 (C)) or a sheet pile (S) which has a connection ring pipe part 211 including a connection ring pipe on both sides and has various angles in the lateral direction by the combination of the connection ring pipes It can be formed in various ways, such as a sheet pile type (Fig. 13 (c)) consisting of.

In addition, the present invention facilitates the wiring of horizontal reinforcing bars when the reinforced concrete barrier is installed by forming the ground perforation heat 150 to continuously communicate with each other. Accordingly, the present invention may further include a reinforcing bar installation step (not shown) of installing reinforcing bars inside the ground perforation heat to install a reinforced concrete barrier after the ground perforation heat 150 is formed.

The above description of the present invention is for illustrative purposes only, and those of ordinary skill in the technical field to which the present invention pertains will be able to understand that it is possible to easily transform it into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not limiting. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as being distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the claims to be described later, and all changes or modified forms derived from the meaning and scope of the claims and the concept of equivalents thereof should be construed as being included in the scope of the present invention.

10: casing 13: drilling drill
15: ground perforation
15-1,… ,15-n: 1st to nth ground perforation
20: stopper
21: side support member 23: perforation direction support member
100: reverse casing
100-1,... ,100-n: 1st to nth inverse casing
101, 103, 105, 107: tube
110: casing pipe part
111: reverse casing groove 120: reverse casing pipe portion
121: arc-shaped plate member
150: ground perforation heat
200: anti-corruption
210: wall steel pipe 220: connecting member
230: ring beam

Claims (14)

Ground perforation forming step of forming a ground perforation using a casing;
After the casing is withdrawn, a casing pipe portion having an inverted casing groove along the length direction of the tube in the ground perforation and an inverted casing formed by joining an arc-shaped plate member to the inverted casing groove so that the convex surface faces the inside of the tube Including a pipe portion, the reverse casing pipe portion, a radius of curvature equal to a radius of curvature of the casing pipe portion, a radius of curvature smaller than a radius of curvature of the casing pipe portion, or a radius of curvature greater than a radius of curvature of the casing pipe portion A reverse casing penetration step of penetrating the reverse casing formed of an arc-shaped plate member;
A step of forming a ground hole after forming a ground hole after the ground hole through which the reverse casing was penetrated;
A step of penetrating the reverse casing into the ground perforation and then penetrating the reverse casing;
Repeated ground hole forming step of repeatedly performing the step of forming the after ground hole and the step of intruding the back casing with respect to the remaining ground hole to be constructed; And
Including; after removing the reverse casings after the ground perforation heat is formed, forming any one of a temporary barrier, a water barrier, an earthen barrier, or a reinforced concrete barrier inside the ground perforation heat.
After the step of forming a ground perforation,
In the case of performing the ground drilling after overlapping with the first formed ground drilling, the casing is penetrated so that the side of the casing is inserted into the reverse casing groove of the intruded reverse casing, and then formed in the overlapping region corresponding to the reverse casing groove. Ground drilling method, characterized in that configured to be performed after filling the filled soil in the vertical cavity. The method of claim 1, wherein the step of forming a ground perforation after the
After positioning the casing so that the casing is inserted into the reverse casing groove of the reverse casing, a ground perforation is formed thereafter so as to be continuously adjacent to the previously formed ground perforation. delete The method of claim 1, wherein the step of forming a ground perforation after the
Ground drilling method, characterized in that it is carried out at a position after one or more ground drilling position intervals of the ground drilling formed in the ground drilling formation step. The method of claim 4, wherein after the reverse casing penetration step,
The ground drilling method further comprises a step of forming a ground drilling and penetrating the reverse casing at a position between the ground drilling and the subsequent ground drilling spaced apart from each other. The method of claim 1,
After the back casing penetration step is performed, the back casing removal step after ground drilling of removing the previously intruded back casing; ground drilling method further comprising a. The method of claim 1,
Ground drilling method characterized in that it further comprises a; step of removing the reverse casing after construction of removing the reverse casings after the construction of the ground drilling is completed. delete The method of claim 1, wherein the reverse casing pipe portion,
Ground perforation method, characterized in that the arc-shaped plate member cut to form the reverse casing groove of the pipe is formed by bonding to the reverse casing groove so that the convex surface faces the inside of the pipe. delete delete delete The method of claim 1,
The arc-shaped plate member forming the casing pipe portion and the reverse casing pipe portion is manufactured by any one of rolling, bending, press forming, or casting processes. The method of claim 1,
In the case of forming a reinforced concrete barrier inside the ground drilling heat after the ground drilling heat is formed, the reverse casings are pulled out and removed, and then rebar installation is installed inside the ground drilling heat that communicates with each other to install a reinforced concrete barrier. Ground drilling method, characterized in that configured to further include the step.

Images