KR20060061066A - Boring machine for weak ground - Google Patents

Abstract

The present invention relates to a soft ground drilling device, and more particularly, to a soft ground drilling device for drilling a soft ground to install the ground structure in the ground, the present invention perforates the soft ground by rotation, the ground after drilling A perforated portion embedded in the; The perforated part provides a soft ground mill plant characterized in that it comprises a first casing detachably coupled to the end.

In the soft ground drilling plant as described above, when the end of the drilling portion is drilled in the soft ground, if the hydraulic pressure or pneumatic pressure for drilling is removed, the soil of the soft ground is pushed into the first casing. can do.

Description

Soft ground drilling machine {BORING MACHINE FOR WEAK GROUND}

1 is a cross-sectional view showing a water collecting well that can be used soft ground drilling apparatus according to the present invention.

Figure 2 is an exploded perspective view showing the configuration of the soft ground drilling apparatus according to the present invention.

3 is a cross-sectional view of the soft ground drilling apparatus of FIG.

Figure 4 is a cross-sectional view showing a state of the soft ground perforation device extended in length of FIG.

5 is an exploded perspective view showing a modification of the soft ground drilling apparatus of the present invention.

Figure 6a is a cross-sectional view showing a state of being drilled by the soft ground drilling apparatus of FIG.

Figure 6b is a cross-sectional view showing a state in which the perforation is completed by the soft ground perforation device of FIG.

FIG. 6C is a cross-sectional view illustrating the removal of the first casing after the drilling is completed in FIG. 6B.

***** Explanation of symbols for main parts of drawing *****

50: underground structure 51: inlet hole

100: punched part 110: the main body

120: injection hole 130: check valve

200: first casing

The present invention relates to a soft ground drilling device, and more particularly, to a soft ground drilling device for drilling a soft ground to install the underground structure in the ground.

In order to install the structure in the ground, the ground is excavated or drilled and then the structure is installed in the excavated or perforated ground.

When the structure is buried vertically or horizontally long the ground is generally perforated.

However, the ground to be drilled is a ground that is easy to be excavated or drilled like earth and sand, which is easy to fall around after excavation or drilling, and grounds to be drilled or drilled using a hammer or the like due to the presence of a plurality of gravel or rocks.

In particular, when drilling the soft ground using a mill factory, it is necessary to prevent this because the surrounding soil will fall.

Therefore, in general, underground structures are installed after perforation using an external casing to prevent the surrounding soil from falling down.

However, when the outer casing is removed in the state where the underground structure is installed, the soil around the outer casing is introduced between the outer casing and the underground structure by earth pressure, and the underground structure is also drawn together with the outer casing.

In addition, when the perforated tip ends in the soft ground during drilling, there is a difficult problem of embedding the structure in the casing because the soil is introduced into the outer casing by the earth pressure when the hydraulic pressure or the pneumatic excavation pressure is removed.

It is an object of the present invention to recognize the necessity and problems as described above, and to provide a fabric factory that can prevent the infiltration of soil by the earth pressure of the surrounding soil while drilling the soft ground.

Another object of the present invention is to provide a mill factory value that can easily remove the mill factory value in the drilling area after drilling the soft ground.

The present invention has been created in order to achieve the object of the present invention as described above, the present invention includes a perforated portion embedded in the ground after the perforation; A first casing having the perforated portion detachably coupled to the end; It is inserted into the first casing and fixedly coupled to the perforated portion, and includes an underground structure to be embedded in the ground, the perforated portion is a soft ground, characterized in that the engaging portion with the underground structure protrudes from the outer peripheral surface of the underground structure Provision of cloth factory value.

The perforation part may be configured to include a main body portion formed with an injection hole for injecting fluid into the ground.

The main body portion may be formed on the front of the impeller portion for excavating the ground by rotation.

The injection port may be provided with a check valve to prevent foreign matter from entering the outside.

The underground structure may be composed of a perforated tube formed with a plurality of inlet holes so that the fluid contained in the underground is buried.

The underground structure may be configured to further surround the outer circumferential surface by the inflow prevention unit to prevent the soil from entering the inlet hole.

The inflow prevention part may be a mesh member or a nonwoven fabric.

The first casing may be coupled to the end portion thereof to be detachably coupled to the casing to extend in the longitudinal direction.

The hole tube may be further fixedly coupled to the hole tube to extend in the longitudinal direction.

The present invention also perforated the soft ground by rotation, and the perforated portion embedded in the ground after the perforation; The perforated portion provides a soft ground mill factory comprising a first casing detachably coupled to the end.

The perforations may be formed such that the coupling portion with the underground structure protrudes from the outer circumferential surface of the underground structure.

The perforation part includes a main part having an impeller part for excavating the ground by rotation and having a spray hole for injecting a fluid into the ground, and a check valve is provided in the spray hole to prevent foreign substances from flowing into the spray hole. Can be installed.

The underground structure of the tubular shape inserted into the first casing and to be embedded in the ground may be fixedly coupled.

The underground structure may be composed of any one of a hole, a steel wire and a steel pipe in which a plurality of inflow holes are formed so that fluid contained in the underground is buried.

Installed on the outer side of the first casing, the perforated portion and the underground structure to be embedded in the ground may be fixedly coupled.

The underground structure may be made of any one of a perforated pipe and a steel pipe.

Hereinafter, the soft ground drilling apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 4, the soft ground mill plant according to the present invention is intended to be soft ground containing sand or fine sand.

Such soft ground includes an area composed of a coastal or sedimentary layer close to the sea, a delta, and the like, and includes a ground layer of a river or a river in which sand or sand is stacked, an underground water layer having an underground vein.

And the soft ground mill factory according to the present invention is a device for drilling in the ground to install the underground structure 50, the drilling direction is vertical direction as well as horizontal direction, gravity direction and inclined direction, that is, the drilling direction is vertical As shown in Figure 1 it can be perforated in various directions, such as oblique direction.

And the soft ground mill factory according to the present invention is a device for drilling in the ground to install the underground structure 50, the drilling direction is a vertical direction, as well as a horizontal direction, gravity direction and inclined direction of the vertical direction in the direction of gravity Perforation in the direction.

There is a catchment well that can draw in the water present in the bottom layer of the river and in the groundwater layer with underground veins.

The sump 20 as described above is similar to the existing well, as shown in Figure 1, but in the case of the well can be installed only in the water vein, in the case of the sump 20 By connecting and installing the oil hole pipe 51 formed with a plurality of inflow holes to the water vein, water can be artificially collected even in the water where the water vein is not located by drawing water in the water vein.

Soft ground milling plant according to the present invention, as shown in Figure 1 to 6c, a perforated portion 100 is embedded in the ground after the perforation; A first casing 200 in which the perforation part 100 is detachably coupled to the end; It is inserted into the first casing 200 and fixedly coupled to the perforation part 100, and comprises an underground structure 50 to be embedded in the ground.

In addition, the perforation part 100 is configured such that the engaging portion with the underground structure 50 protrudes from the outer circumferential surface of the underground structure 50.

That is, the perforations 100 are formed to protrude from the outer circumferential surface of the underground structure 50, as shown in Figs. 2 and 3, by drawing the first casing 100 to be described later after the completion of the perforation When the protruding portion of the underground structure 50 is due to earth pressure around the drilling portion 100, the drilling portion 100 serves as a wedge, leaving the drilling portion 100 and the underground structure 50, and leaving the first casing. Only 200 can be easily removed.

And the drilling unit 100 is a component for drilling the ground for drilling, may be composed of a hammer (not shown) or a drill (not shown), etc., as shown in Figure 2 and 3, The perforation part 100 may be configured to include a main body part 110 having an injection hole 120 for injecting fluid into the ground.

In addition, the fluid injected into the ground through the injection hole 120 may be a liquid such as gas or water such as compressed air.

2 and 3, the main body 110 preferably has a fusiform shape to facilitate the drilling of the ground, and to be rotated together with the underground structure 50 or the first casing 200 to be described later. Can be configured.

2 and 3, the main body 110 may be formed with a plurality of inlet holes (not shown) through which the earth and sand around it can be introduced to facilitate the drilling of the ground.

The inlet hole may be configured to be connected between the underground structure or the first casing, or between the underground structure and the first casing to be removed from the ground to the outside.

As shown in FIG. 3, the injection hole 120 is connected to the injection passage 121 formed in the main body 110 and the injection passage 121 so that fluid may be injected to the outside of the main body 110. It is composed of one or more injection holes 122 to be.

In addition, when there is no injection of the fluid, a check valve 130 may be additionally installed as illustrated in FIG. 3 to prevent the inflow of foreign matter such as soil and fluid around the perforation part 100 through the injection hole 120. have.

The check valve 130 is a valve receiving portion 131 formed in the injection passage 121 and the valve 132 is installed in the valve receiving portion 131 to open the injection passage 121 by the pressure of the fluid 132 It consists of.

As shown in FIG. 3, the valve accommodating part 131 is formed at about the middle of the injection passage 121 in the main body part 110.

In addition, the valve 132 is configured such that the injection passage 121 is opened in the outward direction of the main body part 110 and closed in the inward direction of the main body part 110, and as shown in FIG. 3, the inner side. An insertion part 132a formed to be inserted into the flow path 121a and a valve body part connected to the insertion part 132a and larger than an inner diameter of the inner flow path 121a and accommodated in the valve accommodation part 131. It consists of 121b. Reference numeral 121b denotes an outer flow passage of the injection flow passage 121 divided by the valve body 121b.

The valve body portion 121b is installed to be movable in the valve receiving portion 131 and, as shown in FIG. 3, to close the inner flow passage 121a when there is no pressure of the fluid from the inner flow passage 121a. An elastic member 133 such as a spring that applies an elastic force toward the inner passage 121a may be installed.

The valve body 132b may have a spring insertion portion 132c into which the elastic member 133 may be fitted.

As shown in FIG. 3, the check valve 132 is installed in the injection passage 121 and is opened by the pressure of the fluid when the injection valve 121 is injected into the drilling part 100 to open the injection passage 121. While being injected, when foreign matters around the perforation part 100 are introduced, the foreign substances are pushed inward by the pressure of the foreign matters, thereby closing the injection passage 121 to prevent foreign substances from entering the inside.

On the other hand, the main body 110 may be formed on the front surface of the impeller 123 to excavate the ground by rotation.

In addition, the main body 110 has a detachable portion 140 is further formed to enable the detachable coupling with the first casing 200 to be described later.

The detachable part 140 may be configured in various ways by those skilled in the art, and as shown in FIGS. 2 and 3, a recess 240 formed in the first casing 200 to be described later. It is composed of a protrusion 141 formed on the outer circumferential surface of the main body portion 110 to be inserted into.

As illustrated in FIGS. 2 and 3, the protrusion 141 may be formed in one or more.

As shown in FIG. 2, the impeller part 123 may be configured to be radially arranged in plural on the front of the main body part 110 with respect to the center thereof.

On the other hand, the underground structure 50 is a structure to be buried in the soft ground, any structure that is to be installed in the ground, such as grouting members, piles, pipes, perforated pipes, steel wires and steel pipes for ground reinforcement.

As described above, the underground structure 50 is preferably fixedly coupled to the perforation part 100, and the coupling method may be fixedly coupled by a fastening member such as a screw, as shown in FIG. 3. Can be fixed by welding or the like. In FIG. 3, reference numeral 55 is a welded portion showing a state in which the main body portion 110 and the underground structure 50 of the perforated portion 100 are welded.

As illustrated in FIGS. 2 and 3, the underground structure 50 may be configured as a porous tube in which a plurality of inflow holes 51 are formed to allow the fluid contained in the underground to be introduced therein.

The size of the inflow hole 51 may have various shapes and sizes, such as a slot shape and a circular shape, depending on the condition of the ground to be installed.

The material of the perforated pipe may be used a variety of materials such as plastic material, such as PVC, metal material, reinforced concrete material.

On the other hand, the underground structure 50, as shown in Figure 2 and 3, the outer circumferential surface is configured to be further surrounded by the inflow prevention unit 510 to prevent the soil from entering the inlet hole (51) Can be.

The inflow prevention part 510 may be a mesh member or a nonwoven fabric. In addition, the inflow prevention part 510 is preferably fixedly coupled to the body part 110 of the perforation part 100 by welding or the like.

When the soft ground drilling apparatus according to the present invention is punctured, the first casing 200 prevents the soil of the soft ground from contacting the underground structure 50 or breaks the underground structure. In the case of perforated pipes, it acts to prevent the inflow of moisture into the perforated but fragile pipes.

On the other hand, since the hole pipe is intended to guide the water contained in the surrounding soil to a specific position, it is preferable that a plurality of inflow holes are formed only in the upper direction based on the gravity direction. Of course, the perforated pipe is formed only in the case of a cylindrical shape, when the production after installation, the inlet hole of the perforated pipe may be adjusted to be located in the upper direction based on the gravity direction.

The first casing 200 forms a tubular shape, and a variety of materials, such as a plastic material such as PVC, a metal material, and reinforced concrete, may be used.

The first casing 200 is detachably coupled to the perforation part 100, and as shown in FIGS. 2 and 3 so that the protrusion 141 of the perforation part 100 is inserted and fixed, the recess part is provided. 240 is formed.

In particular, as shown in FIG. 2, the recessed part 240 is rotated after the protrusion 141 is inserted in the longitudinal direction of the first casing 200 and does not move in the longitudinal direction of the first casing 200. It may be formed in the shape of 'b'.

Of course, the manner in which the first casing 200 and the perforation part 100 are detachably coupled is not limited to the embodiments of the present invention, and various modifications may be made by those skilled in the art to which the present invention pertains. It is possible.

On the other hand, when the distance to be drilled in the soft ground is formed long, the first casing 200 or the underground structure 50 also needs to extend its length.

That is, as shown in FIG. 4, the first casing 200 is detachably coupled so that a separate casing 220 may be coupled to each other, and a coupling portion 210 is formed at an end thereof so as to extend in the longitudinal direction. Can be.

The coupling part 210 may be formed in various ways, and as illustrated in FIG. 4, the first casing may be formed to correspond to the female screw part 221 to be coupled to the casing 220 in which the female thread part 221 is formed. It consists of the male screw part 211 formed in the 200.

Meanwhile, as shown in FIG. 4, the underground structure 50 composed of the perforated pipe may be coupled by a welding 53 or the like to extend in the longitudinal direction.

That is, the hole tube may be fixedly coupled to the second hole tube so as to extend in the longitudinal direction, as shown in FIG. Particularly, in the case of perforated pipes, it is necessary to be installed in the ground.

On the other hand, when the underground structure 50 forms a tubular shape that can accommodate the first casing 200, as shown in FIG. 5, it is installed outside the first casing 200, the underground structure 50 is fixedly coupled with the perforation 100.

The underground structure 50 may be any structure that can be installed in the first casing 200, and may be formed of any one of a perforated pipe, a steel wire, and a steel pipe.

Hereinafter, the operation of the soft ground drilling apparatus according to the present invention having the configuration as described above in detail.

First, the soft ground drilling plant according to the present invention will start the drilling of the soft ground to be drilled to install the underground structure 50, as shown in Figure 6a.

That is, the perforated part 100 formed at the end of the soft ground drilling device rotates to drill the soft ground. In particular, the first casing 200 is to prevent the underground structure 50 is damaged by the surrounding soil in the drilling process.

And as shown in Figure 6b, when the drilling is completed to enable the installation of the underground structure 50, as shown in Figure 6c, by rotating the first casing 200 to separate from the punching section 100 Then, the first casing 200 is drawn out and removed.

At this time, the perforation part 100 is formed so that the engaging portion with the underground structure 50 protrudes from the outer circumferential surface of the underground structure 50, the first casing due to the pressure applied to the surrounding soil when the first casing 200 is drawn out Only 200 is drawn and the underground structure 50 serves as a wedge that can be prevented from being drawn out.

After the first casing 200 is removed, the underground structure 50 performs its function according to the purpose of installation.

6A to 6C illustrate an example in which a perforated pipe is installed to allow water existing in the soft ground to flow into the sump 20 shown in FIG. 1.

Soft ground mill plant according to the present invention has an advantage that can provide a mill plant that can prevent the surrounding soil from flowing into the casing while drilling the soft ground.

Soft ground mill factory according to the present invention has the advantage that can provide a mill mill factory can easily remove the mill mill in the drilling area after drilling the soft ground.

Soft ground mill plant according to the present invention has the advantage that can be easily removed without affecting the underground structure after inserting the underground structure at the same time with the drilling.

Claims (7)

Perforating the soft ground by the rotation, and the perforations to be embedded in the ground after the perforation; The first casing is detachably coupled to the perforated end Soft ground perforation device comprising a. The method of claim 1, Wherein the perforated soft ground drilling device, characterized in that the coupling portion with the underground structure protrudes from the outer peripheral surface of the underground structure. The method of claim 1, The perforation part includes a main body portion formed with an impeller portion for drilling the ground by the rotation and the injection hole for injecting a fluid into the ground, The injection hole is a soft ground perforation device, characterized in that the check valve is installed to prevent foreign matter from entering the outside. The method according to any one of claims 1 to 3, And the underground structure inserted into the first casing and the underground structure to be embedded in the ground is fixedly coupled. The method of claim 4, wherein The underground structure is Soft ground drilling device, characterized in that any one of the hole, steel wire and steel pipe formed with a plurality of inlet holes so that the fluid contained in the buried underground flows into it. The method according to any one of claims 1 to 3, It is installed on the outside of the first casing, soft ground drilling device, characterized in that the perforated portion and the underground structure of the tubular form to be embedded in the ground is fixedly coupled. The method of claim 6, The underground structure is a soft ground drilling device, characterized in that the perforated pipe or steel pipe.

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