KR20060117580A - A method for soil improvement and apparatus therefor - Google Patents

Abstract

A method and an apparatus for soil improvement are provided to make soil improvement effectively by discharging moisture contained in a stratum compulsively using a vacuum pump and discharging a large quantity of moisture in a short time using a vertical drain member. A soil improvement apparatus comprises a vertical drain member(140) inserted to a stratum the object of improvement to absorb moisture contained in the stratum, a vacuum pump(11) generating sucking force to discharge the moisture contained in the vertical drain member to the outside, a drainpipe(134) transferring the sucking force generated from the vacuum pump to the vertical drain member and discharging the moisture absorbed by the vertical drain member to the outside, and a connector(100) connecting the vertical drain member and the drainpipe and containing a drainpipe connection having a drainpipe connector to insert the drainpipe and a vertical drain member connection having a vertical drain member connector to insert a vertical drain pipe. Hereon the drainpipes connected to the connector are connected to a horizontal drainpipe(132) by a T-shaped pipe(130) and integrated in a drainpipe assembly. A soil improvement method comprises the steps of: forming a working layer for moving construction equipment and forming a stable working space on the upper part of a stratum the object of improvement; inserting a vertical drain member and a drainpipe connected by a connecter into a mandrill inner space; forming a hole on the stratum the object of improvement using a mandrill fitted with the vertical drain member; connecting drainpipes using a T-shaped pipe; applying vacuum sucking force to the vertical drain member by a drainpipe assembly by operating a vacuum pump; and collecting the moisture absorbed by the vertical drain member to the drainpipe assembly through the connector, the drainpipe, the T-shaped pipe and the drainpipe in orders and discharging to the outside through the final drainpipe(12).

Description

A method for soil improvement and apparatus therefor}

1 is a perspective view of a connector according to an embodiment of the land improvement device of the present invention.

2 is an exploded perspective view illustrating a state in which a drain pipe and a vertical drainage are connected by using a connector according to an embodiment of the land improvement device according to the present invention.

3 is a perspective view illustrating a state in which a drain pipe and a vertical drainage material are connected to each other according to FIG.

4 is a cross-sectional view for explaining the operation of the land improvement apparatus according to the embodiment of the land improvement apparatus of the present invention.

5 is a perspective view of a connector according to another embodiment of the present invention.

6 is a flowchart of a construction method according to the land improvement method of the present invention.

7 is a cross-sectional view for explaining the operation of the land improvement apparatus according to the prior art.

<Explanation of symbols for the main parts of the drawings>

2: working floor 3: strata to be improved

4: lower strata 9: drainage assembly

11: vacuum pump 21: soft ground

22: sand layer 23: nonwoven mat

24: vertical drain drain 25: horizontal drain drain

26: reservoir 27: air tube

28: water 29: combined dike

30: Drainage 100,200: End Connection

110, 210: drain pipe connection 112,212: drain pipe connection

120,220: vertical drain connector 122,222: vertical drain connector

130: T-shaped pipe 10,12,132,134: drain pipe

140: vertical drain

The present invention relates to a land improvement method and apparatus therefor, and more particularly, to a method and apparatus for easily and quickly removing water contained in the strata.

Foundation soft grounds such as rivers, swamps and tidal flats contain a large amount of water, forming a soft clay layer.

Conventionally, in order to improve such a soft ground, solidification treatment is performed using cement which has added a fastening agent to the surface of the soft ground, or after the strength of the surface is secured by natural evaporation, the dehydration construction equipment is entered into the soft ground improvement work. Was performed.

However, such a construction method has a problem in that the construction work is complicated and requires a lot of labor and the construction period is long, the work is difficult and expensive.

In order to solve the problems of the land improvement work according to the prior art, a method for discharging the moisture contained in the strata to the ground using a plastic board drain (PBD) has been proposed. This method improves land by inserting PBD into the strata and then taking moisture out to the ground by earth pressure. However, this method has a problem in that it takes a long time to improve the land because water is extracted only by earth pressure. In order to solve this problem, a method of promoting the discharge of water through the PBD by pressing on the ground has been proposed.

7 is a cross-sectional view for explaining the operation of the land improvement apparatus according to the prior art.

As shown in FIG. 7, after the sand layer 22 is formed on the soft ground 21, the vertical drainage drain 24 is installed on the soft ground 21, and the vertical drainage extends to the sand layer 22. The drain 24 is connected to the horizontal drain drain 25 to drain the water absorbed from the soft ground 21 into the drain path 30.

At this time, the water 28 is contained in the water storage tank 26 formed of the air tube 27, the waterproof combined dike 29 is formed and installed on the nonwoven fabric mat 23 to pressurize the soft ground 21, thereby consolidating dehydration. This will increase the rate of water drainage.

However, such a land improvement work according to the prior art should contain a sufficient amount of water to pressurize the soft ground, because the air tube is used as the embankment, because the durability is weak, and water facilities, etc. are required to fill the water. There is a problem of rising work costs.

In addition, there is a problem of low work efficiency because the drainage takes a long time even when pressing the soft ground to a sufficient weight.

On the other hand, in order to seal the entire soft ground and keep it in a vacuum state, a method of sealing the entire surface of the soft ground by means of vinyl or the like is used to vacuum the entire ground, but when the ground area is large, the entire ground is sealed by vinyl or the like. It was difficult to form a vacuum to seal the problem.

In addition, when covering a large ground with a sealing means such as vinyl, not only the cost of materials such as vinyl and manpower cost to seal the entire ground with vinyl is excessive, but also the whole vacuum state is maintained when a part of the sealing means is damaged. There was a problem that can not be done properly drainage realistically.

The present invention is to solve the problems according to the prior art described above, and an object of the present invention is to provide a land improvement method and apparatus capable of land improvement within a short time.

Another object of the present invention is to provide a land improvement method and apparatus having a low cost of work equipment and apparatus.

In order to achieve the above object, the land improvement method according to the present invention, in the method of improving the land by removing the moisture from the strata containing a large amount of water, in the vertical direction by absorbing moisture from the strata containing the moisture And discharging the water absorbed into the vertical drainage to the outside through a vertical drainage discharged and a drain pipe connected to the vertical drainage to move the water discharged from the vertical drainage.

In addition, the land improvement method according to the present invention comprises the steps of forming a working layer with sand, etc. in order to move the construction equipment to the upper part of the strata to be improved and to form a stable working space, the inner space of the vertical drainage and the drain pipe connected through the connector Inserting in, forming holes with the mandrel in the improvement target layer, interconnecting the drainage pipes using a T-shaped pipe, applying a vacuum suction force to the vertical drainage by operating a vacuum pump, and the The water absorbed by the vertical drainage is discharged to the outside; it can be performed sequentially.

In addition, the land improvement device of the present invention is a device for improving the land by removing water from the strata containing a large amount of water, the vertical drainage for absorbing the moisture contained in the strata, the suction force from the vacuum pump to the vertical drainage A vacuum pump which is connected to one end of the drain pipe and a drain pipe to be connected to the vertical drain and the drain pipe and generates suction force, so that the water absorbed into the vertical drain by the operation is discharged to the outside through the drain pipe. It may include.

The upper portion of the connector of the present invention is formed with a drain pipe connector to be inserted into the drain pipe, the lower portion of the insertion portion may be formed in the vertical drainage connector corresponding to the shape of the vertical drainage so that the vertical drainage is inserted.

Vertical drainage of the present invention is any one of the shape of a plate-shaped plastic board drain (PBD), a circular, polygonal cross-section of the tubular shape, the vertical drainage insertion portion of the connector is a plate so as to correspond to the shape of the vertical drainage It may be formed in any one of a shape, a circular shape, a polygonal shape.

In the following, embodiments of the present invention are described with reference to the accompanying drawings.

In the following description of the present invention, if it is determined that detailed descriptions of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. In addition, the terms to be described later are terms set in consideration of functions in the present invention, and these terms may vary according to the intention or custom of the producer producing the product, and the definition of the terms should be made based on the contents throughout the present specification.

(Example)

First, with reference to the accompanying drawings Figure 4 will be described the configuration of the land improvement apparatus according to an embodiment of the present invention.

4 is a cross-sectional view for explaining the operation of the land improvement device according to an embodiment of the present invention.

As shown in FIG. 4, the land improvement apparatus according to the present embodiment includes a vertical drainage 140 and a vertical drainage 140 inserted into the improvement target strata 3 to absorb moisture contained in the strata. Connect the drain pipe 134 and the vertical drain 140 and the drain pipe 134 to transfer the suction force generated in the vacuum pump 11, the vacuum pump 11 to the vertical drain 140 to discharge to the outside to the outside It is composed of a connector 100.

The drain pipes 134 connected to the connector 100 are connected to the horizontal drain pipe 132 by the T-shaped pipe 130 and are integrated in the drain pipe assembly 9.

The vertical drainage 140 may use a PBD or a PBD material coupled to a hollow tubular surface having a circular or polygonal cross section, if necessary. The vertical drainage material is inserted into the improvement layer 3 to absorb moisture contained in the layer 3.

The drain pipe 134 transmits the suction force of the vacuum pump 11 to the vertical drainage 140 to provide a path for discharging the moisture absorbed by the vertical drainage 140 to the outside.

The drain pipe 134 and the vertical drain 140 are interconnected through the connector 100.

Hereinafter, the configuration of the connector 100 will be described with reference to the accompanying drawings.

1 is a perspective view of a connector according to an embodiment of the present invention, Figure 2 is an exploded perspective view showing a state connecting the drain pipe and the vertical drain using the connector according to an embodiment of the present invention, Figure 3 is according to FIG. A perspective view showing a state in which a drain pipe and a vertical drainage material are connected.

As shown in Figure 1, the connector 100 according to the present embodiment is formed in the form of a hollow tube as a whole.

The upper part of the connector 100 is formed with a drain pipe connector 110 having a drain pipe connector 112 into which the drain pipe 134 can be inserted, and the lower part of the vertical drainage connector 122 into which a vertical drainage material such as a PBD can be inserted. Is formed vertical drainage connection portion 120 is formed.

Since the drain pipe 134 is generally formed in a tubular shape having a circular cross section, the drain pipe connector 112 is formed in a circular shape, and since the PBD is formed in a plate shape having a generally rectangular cross section, the vertical drainage connector 122 ) Is formed into a square.

However, the present invention is not particularly limited thereto, and the vertical drainage connector 122 of the connector 100 may also have a shape when the vertical drainage 140 uses a tubular vertical drainage having a circular or polygonal cross section. Correspondingly, it can be changed and used.

5 is a perspective view of a connector according to another embodiment of the present invention.

As shown in FIG. 5, when the vertical drainage member is formed in a circular shape, the shape of the vertical drainage connector 222 of the connector 200 is correspondingly formed in a circular shape.

In addition, although not shown, when the cross-section of the drain pipe 134 is a polygon, it should be noted that the shape of the drain pipe connector 212 may also be formed in a polygon corresponding thereto.

(Construction example)

Hereinafter, a construction example according to an embodiment of the present invention will be described with reference to FIGS. 4 and 6.

In the first step, construction equipment (for example, trucks for moving equipment and / or construction equipment, etc., to form a hole in which vertical drainage 140 is to be inserted into the improvement target strata 3 is to be inserted. In order to move the) and to form a stable working space to form a working layer (2) (S10).

The second step, the vertical drain 140 and the drain pipe 134 connected through the connector 100 is inserted into the mandrel inner space (S20).

In the third step, a hole is formed with a mandrel in which the vertical drainage 140 is inserted into the improvement target layer 3 (S30).

In the fourth step, the drain pipes 132 and 134 are interconnected using the T-shaped pipe 130 (S40).

In the fifth step, the vacuum pump 11 is operated to apply a vacuum suction force to the vertical drain 140 through the drain pipe assembly 9 (S50).

In the sixth step, the water absorbed by the vertical drain 140 is sequentially passed through the connector 100, the drain pipe 134, the T-shaped pipe 130, and the drain pipe 132 by the suction force of the vacuum pump 11. After being collected in the collecting unit 9, it is discharged to the outside through the final drain pipe 12 (S60).

Through the above steps, the water contained in the layer to be improved 3 is forcibly drained by the vacuum pump 11, and land improvement is performed in a short time.

The embodiments of the present invention have been described above with reference to the accompanying drawings. However, it is to be noted that the present invention is not limited only to the above-described embodiments, and that various modifications and changes can be made by those skilled in the art within the spirit and spirit of the appended claims as necessary.

For example, using two vacuum pumps, one vacuum pump injects air into the improvement strata to increase the internal pressure of the improvement strata, and the other vacuum pump applies suction to the vertical drainage to improve work efficiency. You might be able to increase your work time and save time.

As described above, according to the present invention, since the water of the layer to be improved is forcibly discharged using a vacuum pump, it is not necessary to add weight to the upper part of the layer to be improved in order to apply pressure to the layer to be improved, so that the work is simple. Improved methods and devices can be provided.

On the other hand, if it is necessary to improve the land within a shorter time, it is possible to apply pressure to the upper part of the strata to be improved as needed.When the pressure is applied to the upper part of the target strata, a lot of water is discharged in a shorter time with a vertical drainage agent. Since the earth pressure is to be discharged, there is an effect that the land improvement by the vacuum according to the present invention can be carried out more efficiently by the pressure.

In addition, according to the present invention it is possible to provide a land improvement method and apparatus capable of land improvement work within a short time is made by forced drainage by a vacuum pump.

In addition, according to the present invention, in order to vacuum the entire land, it is not necessary to seal the entire land surface to form a vacuum, and only a drainage part to be drained is formed with a vacuum, so that when the wide ground is covered with a sealing means such as vinyl, Material costs and manpower costs for sealing the entire ground with vinyl are incurred, thus providing an economical and easy land improvement method and apparatus.

In addition, in the case of sealing work using a sealing means such as vinyl to make the whole land into a vacuum as in the past, if a part of the vinyl is damaged, the overall vacuum state cannot be maintained, and in the case of constructing a large soft ground, Although it was practically difficult to check and repair which specific parts were damaged, in the present invention, it is easy to check and repair the drainage, drain pipe, and connector, thereby providing a land improvement method and apparatus that are easy to repair and the like.

Claims (5)

In the method of improving the land by removing moisture from the strata containing a large amount of water, The vertical drainage material through a vertical drainage material (ash) absorbing moisture from the strata containing water and discharged in the vertical direction, and a drain pipe connected to the vertical drainage material (ash) to move the water discharged from the vertical drainage material (ash). Land improvement method, characterized in that it comprises the step of discharging the water absorbed in the (ash) to the outside. According to claim 1, wherein the land improvement method Forming a working layer of sand or the like to move the construction equipment on the upper part of the ground to be improved and to form a stable working space; Inserting the vertical drain and the drain pipe connected through the connector into the mandrel interior space; Forming a hole in the improvement target layer with the mandrel; Interconnecting the drain pipes using a T-shaped pipe; Operating a vacuum pump to apply a vacuum suction force to the vertical drainage material; And And draining the water absorbed by the vertical drainage to the outside. In the device to improve the land by removing moisture from the strata containing a large amount of water, Vertical drainage absorbing moisture contained in the strata; A drain pipe for transferring suction from the vacuum pump to the vertical drain; A connector for interconnecting the vertical drain and the drain pipe; And And a vacuum pump connected to one end of the drain pipe to generate a suction force so that water absorbed into the vertical drain by the operation thereof is discharged to the outside through the drain pipe. According to claim 3, wherein the upper portion of the connector is a drain pipe connector is formed to be inserted, the lower portion is inserted into the vertical drainage connector corresponding to the shape of the vertical drainage is formed so that the vertical drainage is inserted. Land improvement device. The vertical drainage device of claim 3 or 4, wherein the vertical drainage material is any one of a board-shaped plastic board drain (PBD), a circular shape, and a tubular shape having a polygonal cross section. A land improvement device, characterized in that formed in any one of a plate shape, circular shape, polygonal shape so as to correspond to the shape of the drain.

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