KR100989585B1 - Vibration unit and grouting apparatus for using the same - Google Patents

Abstract

The present invention relates to an excitation unit and a grouting apparatus using the same, the excitation unit according to the present invention includes a housing, an inner side of the housing, and a diaphragm unit for dividing the housing into one side and the other side based on the provided position, the housing Vibration generating portion provided on one side of the inlet portion is coupled to the housing for supplying the injection material to the other side of the housing, provided on the other side of the housing, the injection liquid portion for receiving the injection material from the inlet, and in fluid communication with the injection liquid portion It includes an exciter consisting of an outlet portion formed to be.

In addition, the grouting apparatus according to the present invention, the pumping unit for pumping the injection material; An excitation unit provided in fluid communication with said pumping unit; And a tip injection unit in fluid communication with the excitation unit and supplying the object to be reinforced with the injection material excited by the excitation unit.

By using the excitation unit and the grouting apparatus using the same according to the present invention, the suspension injection material can be effectively supplied to fine cracks. In addition, by applying vibration to the injection liquid, it is possible to prevent the components of the injection liquid from being separated in the object.

Description

And a grouting device using the same unit {VIBRATION UNIT AND GROUTING APPARATUS FOR USING THE SAME}

The present invention relates to an excitation unit and a grouting apparatus using the same, and more particularly, when reinforcing a crack generated in an object such as a soft ground, a rock, or a structure, injection into a microcrack is possible, and an injection liquid component is separated from the object. The present invention relates to an excitation unit and a grouting apparatus using the same.

In general, grouting refers to injecting fillers into cracks and cavities in civil engineering, and cracks are formed on objects such as buildings, tunnels, underground joint facilities, dam foundations, and artificial earth structures. When water easily penetrates into the object, grouting is performed on the object for leakage prevention construction or soil stability. For grouting, to reinforce a suspension injection material in which an injection particle such as cement is dispersed in a liquid, a chemical injection material in which the injection material does not contain particles, or a semi-solution injection material combining a suspension injection material and a chemical injection material. Can be injected into a subject.

The suspension injection material has high durability, low cost, and economical efficiency, but has low permeability, making it difficult to use as an injection material for an object in which microcracks have occurred, and the chemical injection material has excellent strength and low strength and durability. In the case of the semi-solution injection material, the strength is higher than that of the chemical injection material, but there is a problem that there is a limit to the strength required by the subject. In addition, when the injection liquid is supplied to the object, the components constituting the injection liquid are separated from each other, so that the cracks of the object or the components that solidify the soft ground do not move more than a predetermined section, and only the lubricating component passes through the ground. A problem has occurred.

Conventionally, in order to solve such a problem, in mixing and injecting the liquid A solution and the liquid water solution B containing a high binder in the Republic of Korea Patent No. 1976-0001369, the solution A and B At the same time, the mixing method is to stop the solution A and inject only the solution B is proposed. However, it is difficult to prevent the separation of the injection liquid components from each other only by changing the injection time or the amount of injection as described above, and since the injection time should be applied differently according to the object, it is difficult to properly adjust the injection time. Silver has a problem that it is difficult to prevent the injection liquid components from being separated from each other, and eventually, it is difficult to strengthen the ground.

In addition, the Republic of Korea Patent No. 0366156, in the small nailing method, a plurality of injection holes are formed on the outer circumferential surface of the pipe reinforcing material provided in the ground boring hole, and the high-pressure cement suspension is injected through the injection holes to puncture A saw nailing method using pressurized grouting, in which the inside of a hole can be filled, is presented. However, by simply injecting the injection material into the soft ground or the crack of the ground by using the pressurization device such as a pump, it is difficult for the injection liquids to reach the microcracks of the object.

Therefore, the problem to be solved by the present invention is to provide an excitation unit that can be injected into the object effectively.

In addition, while the injection material is supplied to the fine gap of the object by applying the excitation unit, it can be solidified with high strength in the object and to provide an economical grouting device.

Excitation unit according to the invention,

housing;

A diaphragm unit provided inside the housing and dividing the housing into one side and the other side based on the provided position;

A vibration generating unit provided at one side of the housing;

An inlet coupled to the housing to supply an injection material to the other side of the housing;

An injection liquid part provided at the other side of the housing and receiving injection material from the inlet part; And

It characterized in that it comprises a conduit consisting of an outlet formed in fluid communication with the injection liquid portion.

Excitation unit according to an embodiment of the present invention, the diaphragm portion may be made of a vibration plate for transmitting the vibration received from the vibration generating portion to the injection material, a shock absorbing member coupled between the outer peripheral surface of the vibration plate and the inner peripheral surface of the housing. In this case, the diaphragm may be formed at a predetermined curvature to be convex toward the injection liquid portion.

In addition, the diaphragm may be formed in a bellows shape from a radially outermost side of a portion exposed in the housing to a predetermined distance radially inward.

In addition, the shock absorbing member may be rounded at an end in contact with the diaphragm.

In addition, the inlet may be made of an inlet through which the injection liquid is supplied, and an inlet pipe formed in a pipe shape between the inlet port and the injection liquid unit so that the injection liquid moves to the injection liquid unit.

Excitation unit according to another embodiment of the present invention may be further provided with a drive motor that is linked to the vibration generating unit. At this time, the vibration generating unit may be made of a vibration rod reciprocating in one direction and the other direction of the housing in conjunction with the drive motor.

In addition, the vibration generating unit may be formed of an amplifier.

In addition, the vibration generating unit may be made of a piezoelectric element.

The grouting device according to the present invention,

A pumping unit for pumping the injection material;

An excitation unit corresponding to any one of claims 1 to 10 and provided in fluid communication with the pumping unit; And

In fluid communication with the excitation unit, characterized in that it comprises a front end injection unit for supplying the object to be reinforced to the injection material excited by the excitation unit.

The pumping unit may include a stirrer for stirring the injection material, a pump for delivering the injection material supplied from the stirrer to the excitation unit, and a pumping pipe provided between the pump and the excitation unit.

In addition, the excitation unit may be further provided with a check valve for preventing the injection material supplied to the excitation unit flows back to the pumping unit.

In addition, the frequency detection sensor for measuring the attenuated vibration frequency of the injection material mounted on the tip injection unit, the vibration frequency of the vibration generating unit to adjust the vibration frequency so that the attenuated vibration frequency to the reference frequency according to the value of the frequency detection sensor The control unit may be further provided. At this time, the reference frequency is preferably 5Hz to 15Hz.

In addition, the excitation unit may be mounted in the tip injection unit.

By using the excitation unit according to the present invention, it is possible to lower the apparent viscosity of the injection liquid injected into the cracked object, thereby improving the fluidity of the injection liquid.

In addition, by using the grouting device using the excitation unit, since the injection liquid having a lower apparent viscosity can be injected into the object, it is economical and can effectively supply the injection material expressing the high strength required by the object to the minute cracks. . In addition, by applying vibration to the injection liquid, it is possible to prevent the components of the injection liquid from being separated in the object.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention, but the present invention is not limited thereto. In addition, the terms or words used in the present specification and claims are consistent with the technical spirit of the present invention on the basis of the principle that the inventor can appropriately define the concept of the term in order to best describe his or her invention. It must be interpreted as meaning and concept.

Figure 1 is a cross-sectional view showing various embodiments of the exciter according to the present invention, Figure 1a shows a vibrator applied to the vibration generating portion vibrating rod reciprocating in one direction and the other side of the housing, b shows an exciter applied to the vibration generating unit, and c of FIG. 1 shows an exciter applied to the vibration generating unit.

 Excitation unit 200 according to the present invention, as shown in Figure 1, the housing 211;

A diaphragm unit 215 provided inside the housing 211 and having a housing 211 divided into one side and the other side based on the provided position;

A vibration generator 212 provided at one side of the housing 211;

An inlet 213 coupled to the housing 211 and supplying an injection material to the other side of the housing 211;

An injection liquid unit 214 provided at the other side of the housing 211 and receiving an injection material from the inlet unit 213; And

It characterized in that it comprises a conduit 210 consisting of an outlet portion 216 formed in fluid communication with the injection liquid portion 214.

Here, the diaphragm 215 is a reference for dividing the housing 211 into one side and the other side, and the diaphragm 215x for transmitting the vibration received from the vibration generating unit 212 to the injection material, and the radial plate of the diaphragm 215x. It may be made of a buffer member 215y coupled between an outer circumferential surface and the housing 211. The buffer member 215y is provided so as to minimize the influence of the vibration of the diaphragm 215x on the injection liquid located in the injection liquid portion 214 and on the injection liquid located in the inflow pipe 213y. .

The cracked object can fill the gap by supplying an injection material to the crack of the object. At this time, the excitation unit according to the present invention, as applying vibration to the injection material supplied to the object, as shown in Figure 1a, one side of the driving motor 250 provided in the excitation unit is coupled to the housing 211 The vibrating rod 212a reciprocating in one direction and the other side of the vibration plate 215x so that the vibration can be transmitted to the injection material. That is, the injection liquid transferred to the injection liquid portion 214 through the inlet 213x and the inlet pipe 213y is transferred to the outlet portion 216 by vibration transmitted by the diaphragm 215x. At this time, the annular inlet pipe 213z located at the same height as the inlet 213x is formed in an annular shape, and is formed at one side and the other direction of the housing 211 at regular intervals along the circumferential direction of the annular inlet pipe 213z. Inlet pipes 213y may be formed in fluid communication. In the excitation unit according to an embodiment of the present invention, as shown in a perspective view of the inlet 213 shown in FIG. 1A, four inlet pipes 213y are 90 ° to the annular inlet pipe 213z. It may be formed in fluid communication at intervals. The inlet 213 shown in a perspective view is shown by cutting a portion of the annular inlet pipe 213z so that the inlet pipe 213y is in fluid communication with the annular inlet pipe 213y. At this time, the inlet 213 according to an embodiment of the present invention, the inlet 213x and the annular inlet pipe 213z is provided on one side of the housing, the inlet pipe 213y is the other side from one side of the housing It is shown as formed across the direction. However, this arrangement is only one embodiment, and the number of the inlet pipes 213y can be changed. That is, if the shape of the inlet 213 is a shape that can effectively supply the injection liquid to the injection liquid portion 214 located on the other side of the housing, the position or shape of the annular inlet pipe 213z or the inlet 213x is changed. It is possible.

As shown in FIG. 1B, the vibration generating unit 212 includes an amplifier 212b, or as shown in FIG. 1C, by applying a piezoelectric element 212c to the injection liquid unit 214. Vibration may also be applied to the injection liquid.

When the vibration generator 212 is formed of an amplifier 212b, the vibration generator 212x according to the present invention performs the role of the vibration plate of the speaker after having the vibration generator 212 similarly to the structure of the speaker. Can be. When a current is applied to the coil through an electrical signal received from the amplifier control unit, a force is formed in a direction perpendicular to the plane of the magnetic flux density and current of the coil, that is, one side and the other direction of the housing 211, so that the diaphragm 215x is disposed in the housing ( 211) is to move in one direction and the other direction. The amplifier 212b amplifies an analog signal transmitted as an electric signal, and the signal is not limited to only a sound signal. Therefore, even if the vibration generator 212 is composed of an amplifier 212b, the structure is not limited to the shape of the speaker.

In addition, the vibration generator 212 may be formed of a piezoelectric element. In FIG. 1C, the piezoelectric element 212c is positioned on the outer circumferential surface of the diaphragm 215x to transmit vibration to the diaphragm 215x by the piezoelectric element controller. At this time, the position of the piezoelectric element may be provided anywhere where it can be combined with the diaphragm 215x. In addition, the piezoelectric element 212c may be replaced with the diaphragm 215x so that the piezoelectric element directly vibrates the injection material. Here, the piezoelectric element refers to an element exhibiting a piezoelectric shape. The piezoelectric element is a phenomenon in which positive and negative charges in which the lift of the plate is proportional to the external force appear when a certain kind of crystal plate is applied in a predetermined direction. There is an inherent vibration, and when the elastic vibration and the electrical vibration coincide, it is combined with the piezoelectric force to generate a stronger vibration. That is, the vibration generating unit 212 according to the present invention may apply vibration to the injection liquid located in the injection liquid unit 214 by using the piezoelectric element 212c.

2 is a cross-sectional view showing various embodiments of the diaphragm according to the present invention.

The diaphragm which concerns on this invention can be changed into various shapes. In particular, in order to increase the durability against the repetitive price of the vibration rod, as shown in FIG. 2A, the diaphragm 215x may be convexly formed at a predetermined curvature toward the injection liquid portion 214. When the diaphragm 215x is formed to have a predetermined curvature as described above, even if the diaphragm 215x and the diaphragm are in contact with each other, the vibration plate can be effectively transmitted to the injection material even though the diaphragm 215x is in contact with a small force. In addition, due to this feature of spreading the price evenly, plastic stress is hardly generated in the portion of the diaphragm 215x in contact with the diaphragm 212a, thereby resulting in the durability of the diaphragm 215x. Will increase.

In addition, as shown in Fig. 2B, by forming a bellows shape from a radially outermost side of a portion of the diaphragm 215x 'exposed in the housing to a predetermined distance l of a radially inner side, the bellows portion of the bellows portion is reduced even if it is expensive. Due to elasticity, durability of the diaphragm 215x 'may increase.

At this time, by virtue of the friction between the diaphragm 215x and 215x 'and the end portion e of the shock absorbing member 215y by rounding the end portion e of the shock absorbing member 215y in contact with the diaphragm 215x and 215x'. (215x, 215x ') can be prevented from rupturing.

3 is a block diagram of a grouting apparatus according to an embodiment of the present invention.

The grouting apparatus applying the excitation unit 200 according to the present invention, as shown in Figure 3, the pumping unit 100 for pumping the injection material;

Claim 1 to 10, wherein the excitation unit 200 which is provided in fluid communication with the pumping unit (100); And

It is characterized in that it comprises a front end injection unit 300 in fluid communication with the excitation unit 200, and supplies to the object (1) to reinforce the injection material excited by the excitation unit 200.

At this time, the pumping unit 100, a stirrer (not shown) for stirring the injection material, a pump 130 for sending the injection material supplied from the stirrer to the excitation unit 200, and the pump 130 and the It is preferable that the pumping pipe 120 is provided between the excitation unit 200.

In the grouting apparatus according to the present invention, when supplying the injection material, the injection material stored in the reservoir 110 in the pumping unit 100 is transferred to the excitation unit 200 by the pump 130, the vibration in the excitation unit 200 Receiving the injection material proceeds in a way to deliver the injection material to the crack (C) site of the object (1) through the tip injection unit (300). At this time, the control unit 400 is to adjust the performance of the exciter 210 provided in the excitation unit 200.

3 shows that the control unit 400 controls the driving motor 250. When the grouting apparatus according to the present invention adopts the vibration generating unit as shown in FIG. 1B or 1C, the excitation unit 200 Since the driving motor 250 is not provided, the control unit 400 may be linked with the exciter 210 to directly control the vibration generator 212. The pumping pipe 120 may be provided with a pressure gauge 140, a flow meter 150, and a return valve 160 to control the amount or pressure of the injection material, which will be fully understood by those skilled in the art and will not be further described.

The excitation unit 200 receiving the injection material pumped by the pumping pipe 120 exerts vibration on the injection material using the excitation device 210. The check valve 260 and the flow meter 270 may be installed just before the injection material is introduced into the exciter 210. The check valve 260 prevents the vibration generated from the exciter 210 or the injection material in the exciter 210 flows back to the pumping unit 100. In addition, the flow meter 270 can check the flow rate of the injection material flowing into the exciter 210. The injection material passing through the exciter 210 as described above is injected into the object 1 through the injection pipe 310 of the tip injection unit 300. The particles of the excited injection material are excited or excited by receiving the vibration energy, and the apparent viscosity of the injection material is lower than that before the vibration is applied. The apparent viscosity is the inspection stress divided by the inspection speed. Since the ratio depends on the inspection speed, the inspection speed increases as the apparent viscosity decreases. That is, the fluidity is improved due to the decrease in the apparent viscosity. Due to this change, the suspension injection material of cements can also be effectively injected into the microcracks (C).

In order to supply the injection material to the object 1, an injection hole 510 may be formed in the object 1, and an injection casing 520 may be inserted into the injection hole 510. When the injection pipe 310 is inserted into the injection casing 520 and the injection is performed, the packer 320 mounted on the injection pipe 310 and formed of a rubber material is expanded and sprayed on the tip 330 of the injection pipe. The injection casing 520 is sealed so that the injection material is not flowed back.

The grouting apparatus according to the present invention, the control unit 400 and the frequency sensor 450 to control the oscillation frequency range that can maximize the injection effect of the injection material supplied to the crack (C) portion of the object (1) It may be further provided. The frequency sensor 450 detects the frequency of the injection material injected into the crack (C) through the injection pipe 310. Since the vibration is attenuated while the injection material passes through the injection pipe 310, the frequency sensor 450 is used to measure the vibration frequency of the injection material suitable for actually being injected into the crack C of the object 1. That is, when the vibration frequency of the injection material input from the frequency detection sensor 450 is detected by the frequency detector 410 of the control unit 400, the value is transmitted to the contrast circuit 420 through the controller 430. The contrast circuit 420 compares the optimum vibration frequency value and the input value of the injection liquid, and if there is a difference, the controller 430 adjusts the speed of the driving motor, or sends a signal to an amplifier controller or a piezoelectric element controller to vibrate. You can adjust the frequency.

 4 is a block diagram of a grouting apparatus according to another embodiment of the present invention.

The grouting apparatus according to another embodiment of the present invention, as shown in Figure 4, by having the excitation unit 200 in the tip injection unit 300, the vibration is attenuated in the middle of being transferred to the injection pipe 310 You can minimize it. Therefore, the frequency range of the injection liquid in the excitation unit 200 may be the same as the frequency range of the injection liquid supplied from the tip injection unit 300.

5 to 9, the apparatus for testing the performance of the grouting apparatus according to the present invention and the results are shown, Figure 5a is a perspective view of the artificial crack test body, Figure 5b is a cross-sectional view of AA 'of Figure 5a. 6 is a graph showing the passing rate of the artificial crack test body of the injection material having a ratio of general cement and water 1: 2, Figure 7 shows the passing rate of the artificial crack test body of the injection material having a 1: 2 compounding ratio of micro cement and water. It is a graph. FIG. 8A is a perspective view of an artificial soil test body, FIG. 8B is a cross-sectional view taken along line AA ′ of FIG. 8A, and FIG. 9 is a graph showing the speed of the injection material passing through the artificial soil test body per vibration frequency.

In the experiment, as shown in FIG. 1A, a grouting apparatus using the exciter 210 in which the vibrating rod 212a strikes the diaphragm 215x by a drive motor is used. As the diaphragm 215x at this time, the diaphragm 215x shown in FIG. 2A is used.

First, an artificial crack test specimen, as shown in FIG. 5, was used in the reinforcement test of cracks formed on an object. Fig. 5 shows the bottom face in a planar position in order to see the shapes of the artificial crack test body injection unit I and the discharge unit O, but the injection unit I and the discharge unit O of the test body are actually located at the bottom surface. do. The artificial crack test body, _two steel blocks (P ₁ , P ₂ ) of length 3000mm, width 400mm, thickness 50mm, and the copper foil (M) of 0.1mm thickness between the steel block inlet (I) and discharge ( O) Cut in the center and insert it so that the length of the channel is 2800mm and the channel width is 40mm according to the position. After injecting a certain ratio of the injection liquid through the injection unit (I) and measuring the speed it takes to reach the discharge unit (O), the artificial crack test body when the vibration is not applied (0 Hz) and when the vibration is applied The change of speed at is compared. At this time, the pressure of the injection material is 10kg / cm ² , the unit of the injection material speed is cm / s.

First of all, it is an experiment in which a mixture containing general cement and water in a ratio of 1: 2 is passed through an artificial crack test body under the above conditions.

\frequency
Volume 0 Hz 5 Hz 7.5 Hz 10 Hz 12.5 Hz 15 Hz 100 ml 2.98 4.52 8.75 7 6.51 5.38 200 ml 1.53 2.46 4.52 4.52 3.46 2.89 300 ml One 1.63 3.08 3.08 2.24 1.87 400ml 0.75 1.2 2.28 2.28 1.63 1.36 500 ml 0.59 0.96 1.78 1.78 1.29 1.06 Uniqueness Only water is discharged at zero Hz

Referring to Table 1 and FIG. 6 graphing the results, when 100 ml of the injection material is injected, the speed of passage through the test body shows that the injection material passes at 8.75 cm / s when the injection material is excited at a frequency of 7.5 Hz. can see. This can be seen that the speed is about three times as compared to the rate of 2.98 cm / s when the vibration is not given to the injection material. In addition, as described in the specification, if the injection material is not vibrated, the cement cannot pass but only water passes through the artificial crack test body, whereas the excited injection material does not separate its components. Therefore, the use of the grouting apparatus according to the present invention, it can be seen that not only the injection material can pass through the artificial crack test specimen without separation, but also the speed of the excited injection material is much faster than the water separated from the free injection material.

The following is an experiment with an injection material with a 1: 2 compounding ratio of ultrafine cement and water in a test body under the same conditions.

\frequency
Volume 0 Hz 5 Hz 7.5 Hz 10 Hz 12.5 Hz 15 Hz 100 ml 3.78 4.12 5 4.44 4.52 4.52 200 ml 2.2 2.62 2.83 2.74 2.46 2.46 300 ml 1.51 1.63 1.97 1.89 1.64 1.64 400ml 1.17 1.2 1.51 1.46 1.2 1.19 500 ml 0.94 0.95 1.23 1.18 0.95 0.94

Referring to Table 2 and FIG. 7 graphing the results, when the injection material capacity is 100 ml, when the injection material frequency is 7.5 Hz, the penetration speed is 5 cm / s and the speed when no vibration is applied to the injection material is 3.78 cm / s. It can be seen that. When particulate cement is used, since the cement particles are small, the cement particles are not easily separated from the water, even though the powder-free injection liquid passes when the injection liquid is passed from the injection portion to the discharge portion, but the injected material still has artificial cracks. It can be seen that the speed through the specimen is faster.

In addition, in order to test the soft ground freezing performance of the grouting device according to the present invention, as shown in Figure 8, by filling the sand (S) therein and supplying the injection liquid from the injection portion 740 located below The velocity of the injection liquid discharged to the discharge portion 750 located in the upper portion was measured. The artificial earth and sand test specimen used in the experiment is provided with a window 722 and a ruler 724 through which the inside of the test specimen housing 710 having a diameter of 21 cm and a height of 160 cm are provided. You can check the location. The injection liquid injected into the artificial soil test body is injected at a pressure of 5 kg / cm ² using a mixture of general cement and water of 1: 5.

\frequency
Time (s) 0 Hz 5 Hz 7.5 Hz 10 Hz 12.5 Hz 15 Hz 30 0.86 0.95 2.67 3.21 2.04 1.6 60 0.65 0.63 2.25 2.69 1.75 1.00 90 0.43 0.53 1.93 1.46 0.88 120 0.39 0.43 1.6 1.17 0.76 150 0.34 0.33 1.28 0.88 0.64 180 0.29 0.23 0.96 0.59 0.52 210 0.12 0.21 0.55 0.49 240 0.10 0.19 0.51 0.45 270 0.09 0.16 0.47 0.42 300 0.08 0.14 0.43 0.38

Referring to Table 3 and FIG. 9 graphing the results, in the case of the injection-free injection liquid, it is difficult for the cement component of the injection liquid to move more than a certain height so that not only water and cement are separated, but also the discharge part after the water is separated. It takes a long time to reach. On the other hand, when the oscillation frequency of the injection liquid is 10 Hz, the injection liquid passes through the artificial soil test body at 60 seconds, and the injection liquid components are not separated.

As can be seen through the above experiment, by using the excitation device and the grouting device using the same according to the present invention, when the injection material subjected to the vibration is injected into the object, the components of the injection material are not separated, the injection material consisting of a chemical liquid injection material or a fine cement Even if a suspension injection material composed of ordinary cement is inexpensive, the components are not separated like a chemical injection material or a suspension injection material composed of fine cement, and can be moved smoothly within the object. After stiffening, the subject can be reinforced with high strength.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary and will be understood by those skilled in the art that various modifications and variations can be made therefrom. However, such modifications should be considered to be within the technical protection scope of the present invention. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

1 is a cross-sectional view showing various embodiments of the exciter according to the present invention.

2 is a cross-sectional view showing various embodiments of the diaphragm according to the present invention.

3 is a block diagram of a grouting apparatus according to an embodiment of the present invention.

4 is a block diagram of a grouting apparatus according to another embodiment of the present invention.

5 is a perspective view of an artificial crack test specimen.

6 is a graph showing the passing rate of the artificial crack test specimen of the injection material having a ratio of general cement and water of 1: 2.

7 is a graph showing the passing rate of the artificial crack test specimen of the injection material with a 1: 2 mixing ratio of micro cement and water.

8 is a perspective view of an artificial soil test body.

9 is a graph showing the speed of the injection material passing through the artificial soil test body per vibration frequency.

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

1: object 100: pumping unit

110: reservoir 120: pumping pipe

130: pump 140: pressure gauge

150: flow meter 160: return valve

200: exciting unit 210: exciting unit

211: housing 212: vibration generating portion

212a: vibration rod 212b: amplifier

212c: piezoelectric element 213: inlet

213x: inlet 213y: inlet pipe

214: injection liquid portion 215: diaphragm portion

215x: diaphragm 215y: shock absorbing member

216: outlet 260: check valve

270: flow meter 300: tip injection unit

310: injection pipe 320: packer

330: tip 400: control unit

410: frequency detector 420: contrast circuit

430: controller 450: frequency sensor

510: injection hole 520: injection casing

C: crack

Claims (16)

housing; A diaphragm unit provided inside the housing and dividing the housing into one side and the other side based on the provided position: A vibration generating unit provided at one side of the housing; An inlet coupled to the housing to supply an injection material to the other side of the housing; An injection liquid part provided at the other side of the housing and receiving injection material from the inlet part; And And a vibrator comprising an outlet portion formed to be in fluid communication with the injection liquid portion. The method of claim 1, The diaphragm unit, a vibration unit for transmitting a vibration received from the vibration generating unit to the injection material, an excitation unit, characterized in that consisting of a buffer member coupled between the outer peripheral surface of the vibration plate and the inner peripheral surface of the housing. 3. The method of claim 2, The vibration plate, the excitation unit, characterized in that formed in a certain curvature convex to the injection liquid side. 3. The method of claim 2, And the diaphragm is formed in a bellows shape from a radially outermost side of a portion exposed in the housing to a predetermined distance radially inward. 3. The method of claim 2, The shock absorbing member is a vibration unit, characterized in that the end in contact with the diaphragm rounded. The method of claim 1, The inlet unit is an inlet for supplying the injection liquid, the excitation unit is characterized in that the inlet pipe formed in a pipe (pipe) shape between the inlet and the injection liquid portion to move to the injection liquid portion. The method of claim 1, The excitation unit, the excitation unit, characterized in that the drive motor is further provided with the vibration generating unit. The method of claim 7, wherein The vibration generating unit, the excitation unit, characterized in that consisting of a vibration rod reciprocating in one direction and the other direction of the housing in conjunction with the drive motor. The method of claim 1, The vibration generating unit, the excitation unit, characterized in that consisting of an amplifier. The method of claim 1, The vibration generating unit, the excitation unit, characterized in that consisting of a piezoelectric element. A pumping unit for pumping the injection material; An excitation unit corresponding to any one of claims 1 to 10 and provided in fluid communication with the pumping unit; And And a tip injection unit in fluid communication with the excitation unit and supplying the object to be reinforced with the injection material excited by the excitation unit. The method of claim 11, The pumping unit comprises a stirrer for agitating the injection material, a pump for delivering the injection material supplied from the stirrer to the vibrating unit, and a grouting device comprising a pumping pipe provided between the pump and the vibrating unit. The method of claim 11, The vibrating unit, the grouting device further comprises a check valve for preventing the injection material supplied to the vibrating unit flows back to the pumping unit. The method of claim 11, A frequency sensing sensor for measuring the attenuated vibration frequency of the injection material mounted on the tip injection unit, and a controller for controlling the vibration frequency of the vibration generator so that the attenuated vibration frequency reaches a reference frequency according to the value of the frequency detection sensor; Grouting device, characterized in that further provided. 15. The method of claim 14, The reference frequency is a grouting apparatus, characterized in that 5Hz to 15Hz. The method of claim 11, The excitation unit is grouting device, characterized in that mounted in the tip injection unit.

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