KR102816422B1 - Grouting method using an elevating mixing device and a wedge-type compaction device - Google Patents

Abstract

A grouting method using an elevating mixing device and a wedge-shaped compacting device, which can prevent a grouting material from being discharged and leaked near a perforation hole during grouting, is disclosed. A grouting device using an elevating mixing device and a wedge-shaped compacting device according to one aspect of the present invention may include: a compacting member including a first diameter portion inserted into a perforation hole and a second diameter portion whose diameter increases linearly from the first diameter portion and whose end is partially inserted into the perforation hole; a connecting casing which transmits pressure so that one end is in close contact with the end of the compacting member and the other end is driven into the perforation hole; a pressure providing unit which is connected to the other end of the connecting casing and provides pressure so that a part of the compacting member is inserted into the perforation hole; and a grouting material supply unit which provides a grouting material at a constant pressure through a central hole of the connecting casing and the compacting member in a state where the compacting member is partially inserted into the perforation hole by the pressure providing unit. Here, the grouting material supply unit may include a mixer in which grouting material is supplied and mixed by a high-speed mixer; an elevating means for elevating the mixer from the ground; an agitator installed adjacent to the mixer, in which the grouting material mixed from the mixer is supplied and stirred by the agitator; and a grouting material supply pump for providing pressure to forcefully feed the grouting material of the agitator into the perforation hole.

Description

{Grouting method using an elevating mixing device and a wedge-type compaction device}

The present invention relates to a grouting method using an elevating mixing device and a wedge-shaped compacting device, and more specifically, to a grouting method using an elevating mixing device and a wedge-shaped compacting device capable of preventing a grouting material from being discharged or leaked out near a drilled hole during grouting.

Since the present invention is intended for the construction and repair of hydraulic facilities such as reservoirs and breakwaters, reference may be made to the contents of existing dam grouting practice guidelines.

In general, grouting refers to stabilizing the ground by injecting a grouting material, such as cement, into the ground for the purpose of preventing water leakage or stabilizing the soil in civil engineering work.

As the scale of structures such as reservoirs and breakwaters increases and the need for underground structures increases, there are many cases where the stress acting on the ground and the corresponding bearing capacity are not balanced. Therefore, there is a need to improve the natural ground or rock to have better bearing capacity.

To this end, a grouting method is performed to inject liquid or gel-like grouting material into the ground or rock to fill cracks or voids and solidify them, thereby increasing bearing capacity. Meanwhile, among the conventional grouting methods, this is a method in which a casing is installed in a place where bearing capacity is insufficient, such as soft ground, by excavating to a certain depth and then injecting grouting material into the soft ground through the casing.

An example of such a prior art is illustrated in Fig. 1. A casing (1) is inserted into a perforation hole and a grouting material supply hose (2, 3) is connected to supply grouting material into the perforation hole.

At this time, a valve (4) and a pressure gauge (5) are installed in the casing (1) and hoses (2, 3), one of the hoses is a supply hose (2), and the other is a return hose (3) that returns the grouting material to the grouting material agitator when no more grouting material enters the perforation hole.

However, this grouting method had the problem that, in the case of low-density stratum, the grouting material, which is the injection material, would be extruded to the upper part of the soft stratum or lost outside the injection target area.

The present invention is to solve the above problems, and the purpose of the present invention is to provide a grouting method using an elevating mixing device and a wedge-type compacting device, which can prevent loss of grout through a compacting device, compact the voids and loose ground of a construction section formed by a rotary washing boring to increase the relative density, thereby preventing the phenomenon of the grout being discharged and flowing out upward, and improving the filling property of the grout by giving a cap effect to the upper part, while at the same time expecting an improvement in the grouting effect through effective control of the grouting pressure.

Another object of the present invention is to provide a grouting method using an elevating mixing device and a wedge-type compacting device, which can effectively move the mixed injection material by installing a hydraulic device capable of moving up and down in a mixer that weighs cement, water or other materials, mixes them in a batch, and sends them to a mixer, minimizes spillage when the injection material is moved by the mixer, prevents soil contamination, and improves the safety and convenience of the worker through automation of the hydraulic device.

The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art to which the present invention belongs from the description below.

According to one aspect of the present invention, a grouting device using an elevating mixing device and a wedge-shaped compacting device is provided, which includes a compacting member including a first diameter portion inserted into a perforation hole and a second diameter portion whose diameter increases linearly from the first diameter portion and whose end is partially inserted into the perforation hole; a connecting casing which transmits pressure so that one end is in close contact with the end of the compacting member and the other end is inserted into the perforation hole; a pressure providing unit which is connected to the other end of the connecting casing and provides pressure so that a part of the compacting member is inserted into the perforation hole; and a grouting material supply unit which provides a grouting material at a constant pressure through a central hole of the connecting casing and the compacting member in a state where the compacting member is partially inserted into the perforation hole by the pressure providing unit.

At this time, the compression member may have a ring portion formed so that it can be easily removed from the perforation hole.

At this time, the compression member may be formed such that the outer diameter of the first diameter portion is smaller than the inner diameter of the perforation hole, and a portion of the outer diameter of the second diameter portion may be formed larger than the inner diameter of the perforation hole.

At this time, the end of the connecting casing may be provided with a rim portion having a protrusion formed thereon so as to be easily connected to the pressure providing portion.

At this time, the grouting material supply unit may include a mixer in which grouting material is supplied and mixed by a high-speed mixer; an elevating means for elevating the mixer from the ground; an agitator installed adjacent to the mixer, in which the grouting material mixed from the mixer is supplied and stirred by the agitator; and a grouting material supply pump for providing pressure to forcefully feed the grouting material of the agitator into the perforation hole.

At this time, when supplying grouting material to the mixer, the mixer is placed at the lowest position, and as the grouting material is transferred from the mixer to the agitator, the mixer can be raised to the maximum height by the elevating means.

At this time, the lifting means may be a hydraulic cylinder.

According to another aspect of the present invention, a grouting method using an elevating mixing device and a wedge-shaped compacting device is provided, comprising: a step of drilling from the ground; a step of installing a compacting member for compaction in the drilled hole and providing pressure so that a portion of the compacting member is inserted into the drilled hole; and a step of providing grouting material from the grouting material supply unit through the compacting member and into the drilled hole.

At this time, the step of providing the grouting material through the compaction member to the perforation hole may be performed by first mixing the grouting material in a first mixer, and as the mixer rises, the grouting material moves to the mixer, and then, after the second mixing, is pressurized and fed by a grouting material supply pump.

At this time, the mixer is raised by the hydraulic cylinder, and the grouting material can flow into the agitator by its own weight.

According to the above configuration, the grouting method using the elevating mixing device and the wedge-shaped compacting device according to one aspect of the present invention can prevent loss of the grouting material through the compacting device during grouting, compact the voids and loosened ground in the construction section formed by the rotary washing boring to increase the relative density, thereby preventing the phenomenon of the grouting material flowing out and flowing out upward, and improving the filling property of the grouting material by providing a capping effect at the top, while at the same time improving the grouting effect through effective control of the grouting pressure.

A grouting method using an elevating mixing device and a wedge-shaped compacting device according to one aspect of the present invention can effectively move mixed injection material to a mixer by installing a hydraulic device capable of moving up and down in the mixer, prevent soil contamination by minimizing spillage when the injection material is moved in the mixer, and improve worker safety and convenience through automation of the hydraulic device.

It should be understood that the effects of the present invention are not limited to the effects described above, but include all effects that can be inferred from the composition of the invention described in the detailed description or claims of the present invention.

Figure 1 is a front view of a conventional grouting material being supplied to a drilled hole.
FIG. 2 is a front view of a state in which a perforation hole is drilled in a grouting device using an elevating mixing device and a wedge-shaped compacting device according to one embodiment of the present invention.
FIG. 3 is a front view of a grouting device using an elevating mixing device and a wedge-shaped compacting device according to one embodiment of the present invention being applied to a drilled hole.
FIG. 4 is an exploded perspective view of a compaction member and a connecting casing, which are some components of a grouting device using an elevating mixing device and a wedge-shaped compaction device according to one embodiment of the present invention.
FIG. 5 is a plan view of a compaction member, which is a component of a grouting device using an elevating mixing device and a wedge-shaped compaction device according to one embodiment of the present invention.
FIG. 6 is a front view of a grouting material supply unit, which is a component of a grouting method using an elevating mixing device and a wedge-shaped compacting device according to one embodiment of the present invention.
Figure 7 is a flow chart of grouting using an elevating mixing device and a wedge-shaped compacting device according to one embodiment of the present invention.

Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily practice the present invention. The present invention may be implemented in various different forms and is not limited to the embodiments described herein. In order to clearly describe the present invention, parts that are not related to the description are omitted in the drawings, and the same reference numerals are assigned to the same or similar components throughout the specification.

The words and terms used in this specification and claims should not be construed as limited to their usual or dictionary meanings, but should be interpreted as having meanings and concepts consistent with the technical idea of the present invention, in accordance with the principles by which the inventor can define terms and concepts in order to best describe his or her invention.

Therefore, the embodiments described in this specification and the configurations illustrated in the drawings correspond to preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, and therefore, the configurations may have various equivalents and modified examples that can replace them at the time of filing of the present invention.

In this specification, it should be understood that terms such as “include” or “have” are intended to describe the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

When a component is said to be "in front of," "behind," "above," or "below" another component, unless there are special circumstances, it includes not only being positioned "in front of," "behind," "above," or "below" the other component in direct contact with it, but also cases where there are other components intervening therebetween. Furthermore, when a component is said to be "connected" to another component, unless there are special circumstances, it includes cases where they are indirectly connected to each other as well as cases where they are directly connected to each other.

Hereinafter, a grouting method using an elevating mixing device and a wedge-shaped compacting device according to an embodiment of the present invention will be described with reference to the drawings.

A grouting device using an elevating mixing device and a wedge-shaped compacting device according to one embodiment of the present invention may include a perforator (10), a compacting member (40), a connecting casing (50), a pressure providing unit, and a grouting material supply unit (100), as shown in FIGS. 2 to 6.

The above-mentioned perforator (10), referring to Fig. 2, is a device that forms a perforation hole in a target surface using hydraulic pressure on a drill (20). The perforator (10) perforates a target portion using a drill (20) by applying pressure downward with a hydraulic pressure (30).

The above-mentioned compression member (40), referring to FIGS. 3 to 5, may include a first diameter portion (41) inserted into a perforation hole and a second diameter portion (42) whose diameter increases linearly from the first diameter portion (41) and whose end portion is inserted into the perforation hole.

At this time, the compression member (40) may be formed with a ring portion (43) so that it can be easily removed from the perforation hole.

At this time, the ring portion (43) may be provided as a pair at the end of the compression member (40).

At this time, the compression member (40) may be formed so that the outer diameter of the first diameter portion (41) is smaller than the inner diameter of the perforation hole, and a portion of the outer diameter of the second diameter portion (42) may be formed larger than the inner diameter of the perforation hole.

Accordingly, when pressure is applied in the direction of the perforation hole while the first diameter portion (41) is inserted into the perforation hole, the compression member (40) can completely seal the circumference of the perforation hole with strong pressure by inserting a part of the second diameter portion (42).

Referring to FIGS. 3 and 4, the above connecting casing (50) can transmit pressure so that one end is pressed against the end of the compression member (40) and the other end is inserted into the perforation hole.

At this time, the connecting casing (50) may include a body (51) and a frame (52).

At this time, the end of the connecting casing (50) may be provided with a rim (52) having a protrusion formed thereon so that it can be easily connected to the compression member (40).

At this time, pressure is applied so that the end of the compression member (40) is caught on the jaw of the connecting casing (50), so that the compression member (40) can be inserted into the perforation hole.

The above pressure providing unit, referring to FIGS. 2 and 3, can provide pressure so that the other end of the connecting casing (50) is connected and a part of the compression member (40) is inserted into the perforation hole.

At this time, the pressure providing unit can use a perforator (10). That is, it can be installed to apply pressure to the connecting casing (50) using the hydraulic unit (30) of the perforator (10). Here, the connecting casing (50) can have a different length to match the specifications of the perforator (10).

Referring to FIG. 6, the grouting material supply unit (100) can provide grouting material at a certain pressure through the connecting casing (50) and the central hole (40a) of the compacting member (40) while the compacting member (40) is partially inserted into the perforation hole by the pressure providing unit.

At this time, the grouting material supply unit (100) may include a mixer (110) in which grouting material is supplied and mixed by a stirrer (113), an elevating means for elevating the mixer (110) from the ground, an agitator (120) installed adjacent to the mixer (110) and in which the grouting material mixed from the mixer (110) is supplied and stirred by a stirrer (123), and a grouting material supply pump (130) for providing pressure to push the grouting material of the agitator (120) into the perforation hole.

At this time, the mixer (110) may include a high-speed mixer (113) and a mixing tank (111), and the stirrer (120) may include a stirring device (123) and a stirring tank (121).

At this time, when supplying grouting material to the mixer (110), the mixer (110) is placed at the lowest position, and as the grouting material is transferred from the mixer (110) to the agitator (120), the mixer (110) can be raised to the maximum height by the lifting means.

At this time, the lifting means may be a hydraulic cylinder (112).

Referring to FIG. 2, a front view of a state in which a perforation hole is drilled in a grouting device using an elevating mixing device and a wedge-shaped compacting device according to one embodiment of the present invention is illustrated.

In the illustrated embodiment, a drill (20) is installed below a hydraulic unit (30) of a drill (10) and drilling is performed on a target surface to form a drilling hole to a designed depth.

Referring to FIG. 3, a front view is shown of a grouting device using an elevating mixing device and a wedge-shaped compacting device according to one embodiment of the present invention being applied to a drilled hole.

In the illustrated embodiment, the first diameter portion (41) of the compacting member (40) is first inserted into the perforation hole, and a connecting casing (50) is connected to the upper portion thereof so that the connecting casing (50) vertically connects the hydraulic unit (30) and the compacting member (40).

At this time, the pressure applied by the hydraulic press (30) can be transmitted to the compression member (40) via the connecting casing (50).

In the illustrated embodiment, when hydraulic pressure is provided from the hydraulic unit (30), the compaction member (40) can be inserted into the perforation hole by the pressure. At this time, since the outer diameter of the first diameter portion (41) is smaller than the inner diameter of the perforation hole, it is inserted directly, and since the second diameter portion (42) has a wedge shape in the side view, when pressure is applied, insertion begins from the boundary of the first diameter portion (41), and when a certain degree of insertion is achieved, no further insertion is performed even if pressure is continuously applied.

In this state, the perforation hole is strongly sealed around the perimeter by the compression member (40). Therefore, it is possible to prevent the grouting material from flowing out and backing out from the top of the perforation hole due to the pressure at which it is injected.

At this time, when the compaction member (40) is completely installed in the perforation hole, the grouting material can be supplied into the perforation hole by passing through the central hole (40a, 50a) of the connecting casing (50) and the compaction member (40). Here, since the compaction member (40) strongly seals the perforation hole entrance, the problem of backflow and outflow is solved, and at the same time, the pressure is transmitted into the perforation hole, so that the grouting material fills the area around the perforation hole under high pressure.

Referring to FIG. 4, an exploded perspective view of a compaction member and a connecting casing, which are some components of a grouting device using an elevating mixing device and a wedge-shaped compaction device according to one embodiment of the present invention, is illustrated.

In the illustrated embodiment, the connecting casing (50) can be manufactured with a variable length design as a means for connecting the compression member (40) and the inlet (30).

At this time, the pressure of the hydraulic unit (30) can be transmitted to the compression member (40) by allowing the lower part of the hydraulic unit (30) to be caught on the lip of the edge part (42) of the connecting casing (50).

At this time, a pipe or hose for supplying grouting material can be connected through the central hole (50a) of the connecting casing (50).

At this time, the compression member (40) may be formed such that the first diameter portion (41) extends a certain length and the second diameter portion (42) is formed such that the outer diameter increases linearly from the end of the first diameter portion (41). The first diameter portion (41) may be inserted entirely into the perforation hole.

At this time, a pair of rings (43) are installed at a 180 degree angle at the end of the second diameter portion (42). The compression member (40) can be easily recovered from the perforation hole using the rings (43).

At this time, a pipe or hose for supplying grouting material can also pass through the central hole (40a) of the compression member (40).

Referring to FIG. 5, a plan view of a compaction member, which is a component of a grouting method using an elevating mixing device and a wedge-shaped compaction device according to one embodiment of the present invention, is illustrated.

In the illustrated embodiment, the central hole (40a) of the compression member (40) can be formed so that the inner diameters of the first diameter portion (41) and the second diameter portion (42) are the same. As described above, a pair of rings (43) are formed along the longitudinal direction at the end of the second diameter portion (42).

Referring to FIG. 6, a front view of a grouting material supply unit, which is a component of a grouting method using an elevating mixing device and a wedge-shaped compacting device according to one embodiment of the present invention, is illustrated.

In the illustrated embodiment, a high-speed mixer (113) is installed in the mixer (110) to mix the grouting material inside in real time.

At this time, the mixer (110) is installed so that it can be raised and lowered by a hydraulic cylinder (112).

At this time, a stirring device (123) for mixing grouting material may also be installed in the stirrer (120).

At this time, the mixer (110) and the stirrer (120) are connected by a hose (114) so that the grouting material can be transferred from the mixer (110) to the stirrer (120).

At this time, a pump (130) for feeding grouting material is connected to the mixer (120).

In the illustrated embodiment, with the mixer (110) lowered, the worker provides materials forming the grouting material, such as cement and bentonite, to the mixer (110) in set amounts, and when the high-speed mixer (113) is operated, the grouting material begins to be stirred and mixed.

Then, the mixer (110) is raised by the hydraulic cylinder (112). Then, the grouting material of the mixer (110) is transferred to the mixer (120) through the connecting hose (114). Then, the stirring device (123) of the mixer (120) also starts operating, and the grouting material begins to rise in the mixer (120).

At this time, as the pump (130) operates, the grouting material of the agitator (120) is sent through the connecting hose (124) and into the perforation hole.

In the illustrated embodiment, the grouting material fed into the perforation hole is pressurized to fill the perforation hole and its vicinity, and when the perforation hole is filled with the grouting material and no more grouting material is supplied beyond a certain pressure, the grouting material can be returned to the mixer (110) through the return hose as in the prior art.

Meanwhile, referring to FIG. 7, a flow chart of a grouting method using compaction according to one embodiment of the present invention is illustrated.

A grouting method using compaction according to one embodiment of the present invention may include a step (S1) of drilling from the ground, a step (S2) of installing a compaction member for compaction in a drilled hole and providing pressure so that a portion of the member is inserted into the drilled hole, and a step (S3, S4) of providing grouting material from the grouting material supply unit through the compaction member into the drilled hole.

At this time, the step (S3, S4) of providing the grouting material through the compaction member to the perforation hole may be performed by first stirring the grouting material in a mixer, moving the grouting material to the mixer as the mixer rises, and then stirring the grouting material a second time, and then pressurizing and feeding the grouting material by a grouting material supply pump.

The above mixer can be operated so that the grouting material flows into the agitator by its own weight while being raised by a hydraulic cylinder.

In this way, the grouting method using compaction according to the present invention can prevent the phenomenon of backflow and outflow around the perforation hole by the compaction member, improve work efficiency by effectively moving the mixed grouting material by adding an elevating mixer, prevent soil contamination by minimizing outflow when moving the grouting material, and improve worker safety by automating the hydraulic device.

Although the embodiments of the present invention have been described, the spirit of the present invention is not limited to the embodiments presented in this specification, and those skilled in the art who understand the spirit of the present invention will be able to easily propose other embodiments by adding, changing, deleting, or adding components within the scope of the same spirit, but this will also be considered to fall within the spirit of the present invention.

10 : Perforator
20 : Drill 30 : Hydraulic
40: Compression member 50: Connecting casing
100: Grouting material supply unit 110: Mixer
120 : Mixer 130 : Pump

Claims (10)

A compression member including a first diameter portion inserted into a perforation hole and a second diameter portion whose diameter increases linearly from the first diameter portion and whose end portion is inserted into the perforation hole;
A connecting casing that transmits pressure so that one end is pressed against the end of the above-mentioned compression member and the other end is driven into the perforation hole:
A pressure providing unit that provides pressure so that the other end of the above connecting casing is connected and a part of the above pressing member is inserted into the perforation hole; and
It includes a grouting material supply unit that supplies grouting material at a certain pressure through the central hole of the connecting casing and the pressing member while the pressing member is partially inserted into the perforation hole by the pressure providing unit;
The diameter of the central hole of the above-mentioned compression member is formed so that the inner diameter is the same throughout the entirety so that the grouting material can be directly pressed along the central hole, and a pair of rings are formed along the longitudinal direction at the end of the second diameter portion.
The end of the above connecting casing is provided with a rim portion formed with a protrusion so that it can be easily connected to the above pressing member.
The above grouting material supply unit,
A mixer in which grouting material is provided and mixed by a high-speed mixer;
A hydraulic cylinder for raising the above mixer from the ground;
A mixer installed adjacent to the above mixer, wherein the grouting material mixed from the mixer is supplied and stirred by the mixer; and
A grouting material supply pump is included, which provides pressure to force the grouting material of the above-mentioned mixer into the perforation hole;
When supplying grouting material to the above mixer, the mixer is placed at the lowest position, and as the grouting material is transferred from the mixer to the agitator, the mixer is raised to the maximum height by the hydraulic cylinder.
The end of the compression member is fixed by being caught on the jaw of the above connecting casing and pressure is provided so that the compression member is inserted into the perforation hole.
A grouting device using an elevating mixing device and a wedge-shaped compacting device. delete delete delete delete delete delete A grouting method using a grouting device using a grouting device according to Article 1,
Step of drilling through the ground;
A step of installing a compression member for compression in a perforated perforation hole and providing pressure so that a part of the member is inserted into the perforation hole;
A step of providing grouting material from the grouting material supply unit through the compacting member and into the perforation hole;
Grouting method using an elevating mixing device and a wedge-shaped compacting device. In Article 8,
The step of providing the grouting material through the compaction member to the perforation hole is to first mix the grouting material in a first mixer, and as the mixer rises, the grouting material moves to the mixer, and then after the second mixing, it is fed by a grouting material supply pump.
Grouting method using an elevating mixing device and a wedge-shaped compacting device.
In Article 9,
The above mixer is raised by a hydraulic cylinder, and the grouting material flows into the agitator by its own weight.
Grouting method using an elevating mixing device and a wedge-shaped compacting device.