KR101222151B1 - Packer adjustable of injection direction and repairing method of subsidence road using it - Google Patents

Abstract

PURPOSE: A packer for adjusting injection direction and a repair method of a subsided road using the same are provided to reduce grouting time by preventing a grout material from being injected into an unnecessary portion of a road. CONSTITUTION: A packer for adjusting injection direction comprises a pipe-shaped body(1), a lifting body(2), a rubber pad(3), and an injection guide(4). The pipe-shaped body has a hollow(11), in which a grout material passes through, and a valve(12) for opening and closing the hollow. The lifting body is installed outside the body to be lifted and has multiple knobs(21). The rubber pad is attached to the bottom of the body and is expanded when the lifting body presses the rubber pad. The injection guide is extended from the bottom end of the body and guides the injection direction of the grout material injected through the body.

Description

Packer adjustable of injection direction and repairing method of subsidence road using it}

The present invention relates to a packer capable of adjusting the injection direction and a repair method using the same, and more specifically, injection of grout filled in each structural layer (ground, frost-preventing layer, auxiliary base, base, concrete surface layer) of the settlement road. The present invention relates to a packer capable of adjusting the injection direction to prevent the elevation of unnecessary parts by adjusting the direction and injecting only the portion requiring injection, and to a settlement method using the settlement.

In general, the concrete paving structure is the ground, the frost-free layer for compacting by laying a stone on the ground, and the auxiliary base layer formed by laminating a stone of a particle size relatively smaller than the stone of the frost-free layer on top of the frost-free layer, It is composed of a base layer formed by pouring concrete primarily on top of the auxiliary base layer, and a concrete surface layer cast by concrete on the base layer.

Such concrete pavement structure is caused by road settlement due to compaction of the ground or frost-free layer and auxiliary base layer, loss of frost-free layer, or settlement.

Conventionally, road repair has been performed by overlaying concrete on the concrete surface of the submerged portion as a method of repairing the subsidence, or by partially removing and repositioning the submerged road, but it is not a measure for the cause of subsidence. Repairs can be made in the unattended state, so road settling due to poor compaction can occur again.

In order to solve the above disadvantages, there is a method of filling the grout material in the settled road layer so that the road is raised by the filling pressure of the grout material.

For example, the road repair method of Korean Patent Publication No. 1995-0027099 (published on Oct. 16, 1995) proposes a method of raising concrete surface by filling grout material between the frost-free layer and the ground or in contact with the frost-free layer. In addition, Japanese Patent Application Publication No. 2007-0074835 (published on July 18, 2007) reinforces the frostbite prevention layer by hardening the injected grout material by injecting a grout material into the frostbite prevention layer first, and penetrating the frostbite prevention layer through the second strengthening frostbite prevention layer. The method of filling the grout material with high pressure between the ground or reinforced frostbite prevention layer and the ground to raise the reinforced frostbite prevention layer and concrete surface layer together.

The conventional techniques are to compensate for the disadvantage that re-damage occurs in the overlaying method by filling the grout material in the concrete pavement layer to raise the submerged road, but the grout for the final elevation of the submerged road The filling position of the ash is located under the in-phase prevention layer. This filling position requires that the grout material to be injected is also injected at a great pressure because the weight of the upper road layer is transferred as it is when the grout material is injected. As such, when the injection pressure of the grout material is increased, a large amount of grout material may leak into the gap between the road structure layers.

In other words, in order to elevate the submerged concrete surface, additional pressures higher than the pressure and the leakage pressure for actually elevating the upper road layer are added to the elevation of the submerged road, thereby lowering the construction efficiency.

In addition, since the injection of the grout material filled in the anti-frost-phase layer on the settlement road is continuously injected in one direction, there is a problem in that non-filling is caused by uneven filling and waste of material costs.

The present invention has been made in order to solve the above problems, it is possible to adjust the injection direction of the grout material filled in each structural layer (ground, frost-preventing layer, auxiliary base layer, base layer, concrete surface layer) of the settlement road, which requires injection It is the purpose of providing a repair method to the packer and the settling using the same to adjust the injection direction to reduce the grouting time, while reducing the cost of the material, as well as not to rise of unnecessary parts by the injection only.

Packer that can adjust the injection direction according to the present invention, in the packer is installed in the perforation formed in the subsidence of the road to inject the grout material, a hollow is formed in the interior so that the grout material passes, the opening and closing the hollow on one side A tubular body in which a valve is formed; A lifting body which is installed to be liftable on the outside of the body and has a plurality of handles formed on an outer surface thereof; A rubber pad attached to a lower portion of the body to expand in volume by pressurization of the lifting body; It is formed on the bottom of the body characterized in that it comprises an injection guide for guiding the injection direction of the grout material injected through the body.

Settlement road repair method using a packer capable of adjusting the injection direction according to the present invention, the ground, the frost-free layer to compact by laying a stone on the ground, and the upper of the frost-free layer is relatively smaller than the stone of the frost-free layer Subsidence layer formed by stacking stone of granularity, base layer formed by placing concrete primarily on top of the subbase layer, and a settlement road for repairing the settlement part of the road consisting of concrete surface layer which is poured into concrete on the base layer. In the repair method, the step of drilling the injection hole for injecting the grout material to the in-phase prevention layer; Installing a packer capable of adjusting the injection amount and injection direction of the grout material in the injection hole drilled in the step of drilling the injection hole; Injecting the grout material through the packer capable of adjusting the injection direction characterized in that it comprises the step of raising the pavement of the settled portion of the road.

Packer according to the present invention can be adjusted to the packer and settling road repair method using the same, it is possible to adjust the injection direction of the grout material filled in each structural layer (ground, frost-preventing layer, auxiliary base, base layer, concrete surface layer) of the settlement road By injecting only the portion that needs to be injected, it is possible not only to prevent unnecessary portions from rising, but also to shorten the grouting time and reduce the material cost.

1 is a perspective view showing a packer capable of adjusting the injection direction according to the present invention.
Figure 2 is a cross-sectional view showing a packer adjustable injection direction according to the present invention.
Figure 3 is a cross-sectional view showing another example of the injection guide according to the present invention.
Figure 4 is a process diagram showing the repair method of settling road using a packer capable of adjusting the injection direction according to the present invention.
Figure 5 is a view showing the step of drilling in the settlement process settlements in accordance with the present invention.
6 is a view showing the injection hole and the observation hole according to FIG.
Figure 7 is a view showing the step of installing the packer during the settlement process settlement road in accordance with the present invention.
8 is a view showing a step of raising the pavement of the settled portion of the road during the settlement road repair process according to the present invention,
8A is a grout material primary injection state,
8B is a second injection state of grout material.

Packer that can adjust the injection direction according to the present invention, in the packer is installed in the perforation formed in the subsidence of the road to inject the grout material, a hollow is formed in the interior so that the grout material passes, the opening and closing the hollow on one side A tubular body in which a valve is formed; A lifting body which is installed to be liftable on the outside of the body and has a plurality of handles formed on an outer surface thereof; A rubber pad attached to a lower portion of the body to expand in volume by pressurization of the lifting body; It is formed on the bottom of the body characterized in that it comprises an injection guide for guiding the injection direction of the grout material injected through the body.

In addition, a male screw is formed on an outer side of the body, and a female screw corresponding to the male screw is formed on an inner circumferential surface of the lifting body.

In addition, the injection guide is characterized in that the outer shape is formed to be curved in a semi-circular arc shape.

In addition, the lower end of the injection guide is characterized in that the blocking plate having the same diameter as the diameter of the body is formed.

Settlement road repair method using a packer capable of adjusting the injection direction according to the present invention, the ground, the frost-free layer to compact by laying a stone on the ground, and the upper of the frost-free layer is relatively smaller than the stone of the frost-free layer Subsidence layer formed by stacking stone of granularity, base layer formed by placing concrete primarily on top of the subbase layer, and a settlement road for repairing the settlement part of the road consisting of concrete surface layer which is poured into concrete on the base layer. In the repair method, the step of drilling the injection hole for injecting the grout material to the in-phase prevention layer; Installing a packer capable of adjusting the injection amount and injection direction of the grout material in the injection hole drilled in the step of drilling the injection hole; Injecting the grout material through the packer capable of adjusting the injection direction characterized in that it comprises the step of raising the pavement of the settled portion of the road.

In addition, the packer capable of adjusting the injection direction is a tubular body in which a hollow is formed therein so that the grout material passes and a valve for opening and closing the hollow is formed at an upper side thereof, and is installed to be elevated on the outside of the body and is provided with an outer surface. A lifting body having a plurality of handles formed thereon, a rubber pad attached to a lower portion of the body to expand the volume by pressurization of the lifting body, and an injection of grout material extending from the lower end of the body and injected through the body; Characterized in that it comprises a injection guide for guiding the direction.

In addition, in the drilling step, the injection hole is characterized in that it is formed to be inclined at an angle of 45 ~ 90 ° according to the amount of deflection of the settlement.

In addition, a plurality of observation holes for confirming the injection of the grout material is formed in the settlement part of the road in the drilling step.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a perspective view illustrating a packer capable of adjusting the injection direction according to the present invention, Figure 2 is a cross-sectional view showing a packer capable of adjusting the injection direction according to the present invention, Figure 3 is another example of the injection guide according to the present invention Figure 4 is a cross-sectional view, Figure 4 is a process diagram showing the repair method of the settlement road using a packer capable of adjusting the injection direction according to the present invention, Figure 5 is a view showing a step of drilling in the settlement process according to the present invention 6 is a view showing the injection hole and the observation hole according to Figure 5, Figure 7 is a view showing the step of installing the packer of the repair method of the settlement road according to the present invention, Figure 8 is a sinking road according to the present invention FIG. 8A is a grout material primary injection state, and FIG. 8B is a grout material secondary injection state.

1 and 2, the packer capable of adjusting the injection direction according to the present invention is installed in the perforations formed in the subsidence of the road in the packer for injecting the grout material (5), the grout material (5) Hollow 11 is formed therein so that the passage, the tubular body (1) formed with a valve 12 for opening and closing the hollow (11) on the upper side and the elevating to the outside of the body (1) Lifting body (2) having a plurality of handles 21 are formed on the outer surface and the rubber pad (3) is attached to the lower portion of the body (1) to expand the volume by the pressure of the lifting body (2) And an injection guide 4 extending from the lower end of the body 1 to guide the injection direction of the grout material 5 injected through the body 1.

The body 1 may be made of a metal tube, and a connection connector (not shown) may be formed at an upper end thereof so as to be connected to a hose of a grout material supply device.

A male screw 13 is formed on an outer side of the body 1, and a female screw 22 corresponding to the male screw 13 is formed on an inner circumferential surface of the lifting body 2. Therefore, when the packer is installed in the perforation formed in the subsided part of the road, the body 1 is inserted into the perforation, and the handle 21 of the lifting body 2 is rotated to lower and lower the lifting body 2. The pressure of the rubber pad (3) attached to the lower part of the body (1) is expanded while fixing the position of the packer.

The valve 12 serves to control the injection amount of the grout material 5 supplied to the inside of the body 1 by opening and closing the hollow 11.

The injection guide 4 is formed to extend at the bottom of the body (1) and the outer shape is formed to be curved in a semi-circular arc, it is possible to adjust the injection direction of the grout material (5) injected in the settlement part of the road required injection Inject only in portions to avoid bulging of unnecessary parts.

As shown in FIG. 3, a blocking plate 41 having the same diameter as the diameter of the body 1 may be formed at the lower end of the injection guide 4.

Therefore, the grout material 5 injected along the guide of the injection guide 4 is blocked from being injected downward by the blocking plate 41 and is only injected in the guide direction of the injection guide 4. .

Hereinafter, the settlement method using the packer capable of adjusting the injection direction according to the present invention will be described as follows.

As shown in Figure 4, the settlement method using the packer controllable injection direction according to the present invention is ground (6), and the in-phase prevention layer (7) to lay the stone on the ground (6) The auxiliary base layer 8 formed by stacking a stone having a particle size relatively smaller than the stone of the in-phase preventing layer 7, and the concrete on the upper portion of the auxiliary base layer 8 is primarily formed on top of the in-phase preventing layer 7. In the settlement process for repairing the settlement part of the road which consists of the base layer 9 formed by pouring and the concrete surface layer 10 which is poured into concrete on the base layer 9, the grout to the in-phase prevention layer 7 is grouted. Injecting the injection hole (100) to inject the ash (5), and the injection amount and injection direction control of the grout material (5) in the injection hole (20) perforated in the injection hole (100) Installing a possible packer (200), and Injecting the grout material (5) through the packer capable of adjusting the injection direction to raise the pavement of the settlement of the road (300).

As shown in FIGS. 5 and 6, the drilling step 100 forms an injection hole 20 for injecting the grout material 5 to the in-phase preventing layer 7 by using a wet core drill. .

The injection hole 20 penetrates the grout material 5 into the in-phase preventing layer 7 to solidify the in-phase preventing layer 7 into one large mass so that the in-phase preventing layer 7 can exert a bearing force against the pressure applied later. It is to strengthen the.

In the drilling step 100, the injection hole 20 is preferably formed to be inclined at an angle of 45 ~ 90 degrees according to the amount of deflection of the settlement. Because, when the injection hole 20 is drilled perpendicularly to the road surface, the high pressure grout material 5 discharged from the grout material supply device hits the in-phase preventing layer 7 vertically and then is injected, so that the discharge pressure is increased. There is a disadvantage of deterioration. Therefore, the injection hole 20 is inclined to be inclined at the inclination angle to contact the in-phase preventing layer 7 at a predetermined angle when the grout material 5 is discharged, thereby minimizing the pressure drop at the time of discharging so that the injection is easily performed at a low pressure. You can do it.

In the drilling step 100, a plurality of observation holes 30 for confirming the injection of the grout material 5 may be formed in the settlement part of the road. Therefore, it is possible to check whether the injection of the grout material 5 injected into the injection hole 20 through the observation hole 30 is properly performed.

As such, it is preferable that the injection holes 20 are formed in plural numbers at predetermined intervals in the settlement part of the road, and the observation holes 30 are formed in front of and behind the injection holes 20 located at the outermost sides.

As shown in FIG. 7, in the step 200 of installing the packer capable of adjusting the injection direction, a hollow 11 is formed therein so that the grout material 5 passes, and the hollow 11 is opened and closed on an upper side thereof. The tubular body (1) having a valve 12 to be formed, and the lifting body (2) is installed so as to be elevated on the outside of the body (1) and a plurality of handles 21 are formed on the outer surface, and the body A rubber pad 3 attached to the lower part of the body 1 and expanded in volume by pressurization of the lifting body 2, and a grout formed at the lower end of the body 1 and injected through the body 1. It is to install in the injection hole 20 a packer capable of adjusting the injection direction including an injection guide (4) for guiding the injection direction of the ash (5).

The injection guide 4 is formed to extend at the bottom of the body (1) and the outer shape is formed to be curved in a semi-circular arc, it is possible to adjust the injection direction of the grout material (5) injected in the settlement part of the road required injection Inject only in portions to avoid bulging of unnecessary parts.

Accordingly, by injecting the grout material 5 using the packer capable of adjusting the injection direction, the grout material 5 is prevented from being injected into an unnecessary part that does not settle, thereby reducing the grouting time and reducing the material cost. It works.

In the step 300 of raising the pavement of the settled portion of the road, the grout material 5 is first injected as shown in FIG. 8A so that the grout material 5 passes through the packer into the in-phase preventing layer 7. It penetrates and reinforces the strength of the in-phase preventing layer 7 to stabilize the ground 6. In addition, as shown in FIG. 8B, the grout material 5 may be secondarily injected into the interface between the in-phase preventing layer 7 and the base layer 9 so that a separate reinforcing layer may be formed. In this case, the grout material 5 may be injected into the interface between the in-phase prevention layer 7 and the base layer 9 and may be applied to the in-phase prevention layer 7 by gravity.

In addition, when it is necessary to adjust the injection amount of the grout material (5) according to the lifting state of the pavement of the road settlement part, the grout material (5) is to be injected into each structural layer (ground, frost-preventing layer, auxiliary base layer, base layer, concrete surface layer). It may be.

As the material of the grout material 5, microcement and ordinary cement are used. In order to penetrate the grout material 5 into the pores in the ground 6, the amount of water mixed in the grout material 5 is increased and decreased. It is preferable to increase and then feed.

The injection pressure of the primary grout material 5 is supplied in the range of 3 to 5 kgW / cm 2. Supplying grout material 5 to the ground does not work well when supplied at a pressure below the above range. When supplying pressure above the above range, the ground reinforcement is lowered due to a decrease in supply per unit area due to diffusion due to high pressure. It is preferable to supply the above range because there is a disadvantage. Injection of the primary grout material 5 proceeds until the grout material 5 is identified in the observation hole 30.

The injection pressure of the secondary grout material 5 for raising the concrete surface layer 10 is supplied in the range of 5-10 kgW / cm <2>. At this time, it is preferable to inject while checking whether the settlement of the settlement of the road is deformed, and the method is to use a laser leveler and a thread or a rod manually.

The injected grout material (5) is allowed to harden sufficiently for 6 hours or more, preferably about one day, so that the bearing capacity for the load in the subsequent step is achieved. The curing time may be variously adjusted according to the mixing ratio of the grout material (5).

When the injection of the grout material 5 to the settlement part of the road is completed, a separate finishing treatment may be made to prevent the injected grout material 5 from being discharged through the injection hole 20, and a predetermined time curing time To allow for road traffic.

Although the present invention has been described with reference to the accompanying drawings, it will be apparent to those skilled in the art that many various obvious modifications are possible without departing from the scope of the invention from this description. Therefore, the scope of the invention should be construed by the claims described to include examples of many such variations.

1: body
11: hollow
12: valve
13: male thread
2: lifting body
21: handle
22: female thread
3: rubber pad
4: Injection guide
41: blocking plate
5: grout material
6: ground
7: Frostbite prevention layer
8: subbase
9: substrate
10: concrete surface layer
20: injection hole
30: observer

Claims (8)

In the packer installed in the perforation formed in the settlement of the road to inject the grout material (5),
A hollow body (11) formed therein so that the grout material (5) passes, and a tubular body (1) having a valve (12) for opening and closing the hollow (11) on an upper side thereof;
A lifting body (2) installed on the outside of the body (1) to be liftable and having a plurality of handles (21) formed on an outer surface thereof;
A rubber pad (3) attached to a lower portion of the body (1) and expanded in volume by pressurization of the lifting body (2);
The injection direction is adjustable, characterized in that it comprises an injection guide (4) is formed extending to the lower end of the body (1) to guide the injection direction of the grout material (5) injected through the body (1) Packer. According to claim 1, characterized in that the male screw 13 is formed on the outer side of the body 1, the female screw 22 corresponding to the male screw 13 is formed on the inner peripheral surface of the lifting body (2). Packer with adjustable injection direction. The packer according to claim 1, wherein the injection guide (4) is formed to be curved in a semicircular shape. The packer according to claim 1 or 3, wherein a blocking plate (41) having a diameter equal to the diameter of the body (1) is formed at a lower end of the injection guide (4). Ground, and a frost-free layer for compacting by laying a stone on top of the ground, an auxiliary base layer formed by laminating a stone of a particle size relatively smaller than the stone of the frost-free layer on the top of the frostbite prevention layer, and 1 on top of the auxiliary base layer In the settlement road repair method for repairing the settlement part of the road consisting of a base layer formed by pouring concrete and a concrete surface layer placed in the upper portion of the base,
Drilling an injection hole to inject a grout material to the in-phase preventing layer;
Installing a packer capable of adjusting the injection amount and injection direction of the grout material in the injection hole drilled in the step of drilling the injection hole;
Injecting grout material through the packer capable of adjusting the injection direction to raise the pavement of the settled portion of the road comprising the step of repairing the settlement road using the packer capable of adjusting the injection direction. According to claim 5, The injection direction adjustable packer is a hollow body is formed inside the passage to pass the grout material and the tubular body is formed with a valve for opening and closing the hollow on one side, the elevable outside of the body And a lifting body having a plurality of handles formed on an outer surface thereof, a rubber pad attached to a lower portion of the body to expand the volume by pressurization of the lifting body, and formed at a lower end of the body to be injected through the body. Settlement road repair method using a packer capable of adjusting the injection direction, characterized in that it comprises an injection guide for guiding the injection direction of the grout material. The method of claim 5, wherein in the drilling step, the injection hole repairing the settlement road using a packer capable of adjusting the injection direction, characterized in that formed inclined at an angle of 45 ~ 90 degrees according to the amount of deflection of the settlement road. 8. The method of claim 5 or 7, wherein the plurality of observation holes for checking the grout material injection is formed in the settlement part of the road in the drilling step, the settlement road repair method using a packer capable of adjusting the injection direction.

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