KR102075532B1 - Expansion apparatus for reclamation of ground subsidence - Google Patents

Abstract

The present invention relates to an apparatus for injecting an expanding agent for the recovery of ground subsidence, capable of significantly improving a secondary cavity detecting function through cavity filling. The apparatus for injecting an expanding agent for the recovery of ground subsidence of the present invention comprises: a cap (140); a cap hole (150) formed in the center of the cap (140) and to which an injection solution mixing needle (160) is inserted; and the injection solution mixing needle (160).

Description

Expanding agent injection device for ground depression recovery {EXPANSION APPARATUS FOR RECLAMATION OF GROUND SUBSIDENCE}

The present invention relates to a device for recovering ground depression, more specifically, to injecting the first liquid and the second liquid constituting the expansion agent, the cap which is a cover at the end of the linear connection part, and the cap hole formed in the center of the cap Insert the needle through, but put the fastening part at the end of the needle after all the filling material is injected, the internal foaming agent has a joint filling rate of 100 by providing a structure to seal the needle end into the cap hole immediately after the gas generated inside is discharged The present invention relates to an inflating agent injection device for recovering ground depression to prevent the use of a fluidizable filler material for the space not filled after expansion and hardening.

The total number of subsidences in Seoul from 2010 to 2014 totaled 3,119, with an annual average increase of 29%, which has a very high potential disaster risk in the future.

Beginning with the ground depression in Songpa-gu in 2014, we are continuously exploring underground cavities due to continuous depression within the living radius, and A and B grades with high safety accident risk rating (joint risk rating) have been identified.

Existing measures for high risk cavities have weaknesses such as recovery time, material loss and uncertainty. Therefore, there is a need for an emergency recovery method with a filling method that can minimize the loss of reinforcing materials in a short time.

Meanwhile, as a related technology, Korean Patent Application No. 10-2015-0179970 "Cavity Detection System and Method for Detecting Cavity Occurred Under a Concrete Concrete Track" refers to a concrete concrete track for railway such as a concrete slab track or a direct sleeper track. It is possible to accurately detect the location and size of small and large cavities in the lower ground of the ground, and also to find the location of the small and large cavities in the lower ground of the concrete track compared to the existing ground penetration radar (GPR). Provided are a cavity detection system and method for detecting cavities that occur underneath railway concrete tracks that can detect size economically.

In addition, Korean Patent Application No. 10-2016-0127830 "Automatic Sinkhole Detection System and Method Using Image Analysis of Drones and Thermal Image Cameras" refers to thermal image acquisition using a drone and a thermal imager. part; A candidate detector configured to extract a sinkhole candidate region by analyzing the thermal image acquired by the thermal image acquirer; And a verification unit which extracts the final sinkhole region from the sinkhole candidate region extracted by the candidate detector except for the erroneous detection region.

In addition, the Republic of Korea Patent Application No. 10-2015-0016231 "groundwater observation system having a sinkhole detection function" is a groundwater observation system having a sinkhole detection function, disposed on top of the groundwater well, and inserted into the well Winch winding or unwinding cable; And a first sensor assembly attached to an end of the cable, the first sensor assembly including a first acoustic wave transmitter for generating an acoustic wave and a first acoustic wave receiver for receiving the acoustic wave. Stops at predetermined intervals of the cable as it rises or falls within the station, and in this stationary state, the first acoustic wave transmitter transmits the elastic wave and the first acoustic wave receiver receives the reflected wave and / or refracted wave of the transmitted elastic wave. The groundwater observation system having a sinkhole detection function is provided.

In addition, the Republic of Korea Patent Application No. 10-2016-0076599 "Sudden depression rapid detection system and method" is to embed the tags in the lower part of the package installed on the ground and periodically check the recognition or status change of the tag on the package The present invention relates to a ground depression rapid detection system and method that can quickly and accurately detect the occurrence of underground cavities in the lower part of a package. If only a relatively low initial construction cost is invested compared to the existing method, semi-permanent underground cavities are generated for the target package section. Whether it is detectable, simple to explore and interpret, it can be operated without the need for specialized personnel and has little additional cost for multiple exploration.

However, the above-described prior arts have limitations in that they merely detect the occurrence of the cavity, and provide a technique for reinforcement of the generated cavity and subsequent processing after the reinforcement.

Republic of Korea Patent Application No. 10-2015-0179970 "Cavity Detection System for Detecting CAVITY OCCURRING IN LOWER PART OF CONCRETE TRACK FOR RAILWAY" Republic of Korea Patent Application No. 10-2016-0127830 "SINKHOLE DETECTION SYSTEM AND METHOD USING A DRONE-BASED THERMAL CAMERA AND IMAGE PROCESSING" Korean Patent Application No. 10-2015-0016231 "System for monitoring groundwater with function of detecting sinkhole" Korean Patent Application No. 10-2016-0076599 "SYSTEM AND METHOD FOR RAPIDLY DETECTING A SINK HOLE"

The present invention is to solve the above problems, in the injection of the first liquid and the second liquid constituting the swelling agent to cover the cap of the linear connection end portion, the needle through the cap hole formed in the center of the needle, After the filling material is injected by inserting the fastening part at the end, it provides a structure to seal the needle end by inserting the needle end into the cap hole immediately after the internally generated gas is discharged so that the internal foaming agent is filled with the filling ratio of 100% or more, It is to provide an inflating agent injection device for ground depression recovery so that the use of fluidizable fillers does not occur for spaces not filled after over-hardening.

In addition, the present invention not only greatly improves the secondary cavity detection function through cavity filling, but also when a sealing member such as cement is attached when performing a grouting method for an existing cavity, In this case, it is to provide an inflating agent injection device for ground depression recovery to overcome the limitations of secondary damage or tertiary damage.

However, the objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, inflating agent for ground depression recovery according to an embodiment of the present invention, a straight inlet tube having a membrane fiber structure in injecting the first liquid agent 111 and the second liquid agent 112 as the expansion agent A cap 140 corresponding to the cover at the upper end of the 130; A cap hole 150 formed at the center of the cap 140 to sandwich the injection liquid mixing needle 160; And a fastening member formed at the end of the straight inlet tube 130 by forming a fastening member at the end and injecting all of the expansion agent utilized as a filler, and then closing the cap hole 150 at the end after the gas generated inside is discharged. Injection liquid mixing needle 160 to be filled with the expansion agent is formed in the foam type of the straight inlet tube 130 as well as 110; Characterized in that it comprises a.

In this case, the first liquid agent 111 is a main material (base), the second liquid agent 112 corresponds to a curing agent, characterized in that the foamed polyurethane is formed using a polyol and a diisocyanate, respectively.

In addition, the present invention, the exploration material skin portion 120 is applied to the surface of the sphere 110; It characterized in that it further comprises.

In addition, the probe material 120 may be formed by applying EMI paint.

At this time, the straight input tube 130 is a straight connection portion connected to the ground from the sphere 110 is inserted into the cavity, the length is variablely formed, the outer diameter 45mm, length 1m by cutting to the required length according to the cavity depth It is characterized by the construction possible.

The expansion agent injection device for ground depression recovery according to an embodiment of the present invention, injecting the first liquid and the second liquid constituting the expansion agent to cover the cap of the end of the linear connection, the needle through the cap hole formed in the center of the cap After inserting all the fillers by inserting the fastening part at the needle end, the internal foaming agent is filled with the filling ratio of 100% or more by providing a structure to seal the needle end into the cap hole immediately after the gas generated inside is discharged. By doing so, it is possible to prevent the use of fluidizable fillers in the unfilled space after expansion and hardening.

In addition, the expansion agent injection device for ground depression recovery according to another embodiment of the present invention, not only significantly improve the secondary cavity detection function through the cavity filling, but also when performing the grouting method for the existing cavity In the case of attaching the sealing member, there is an effect that can overcome the limitation that the secondary damage or tertiary damage when the tube or the tube is caught in the lower part of the cavity.

1 to 3 is a view for explaining the expansion agent injection process by the expansion agent injection device for ground depression recovery according to an embodiment of the present invention.
FIG. 4 is a view showing that the apparatus for inflating ground depression recovery according to an embodiment of the present invention is actually manufactured.
5 and 6 are views separately showing the injection liquid mixing needle 160 and the T-shaped injection tube 170 in the ground-inflating recovery expansion device injection device 100 of FIG.
7 is a view showing the structure of the inflating agent injection device for ground depression recovery according to an embodiment of the present invention.
8 is a view showing in detail the components of the injection liquid mixing needle 160 of the ground depression recovery expansion injector 100 according to an embodiment of the present invention.
FIG. 9 is a view showing a state in which the T-shaped injection tube 170 is removed as the inflating agent injection device for recovering the ground depression according to an embodiment of the present invention is actually manufactured.
10 is a view for explaining a state in which the bent part 110 on the ground depression recovery expansion agent injection device 100 according to an embodiment of the present invention inflated.
FIG. 11 is a view showing an example of an exploration function reinforcing material capable of constructing the exploration material skin part 120 of the inflating agent injection device for recovering ground depressions according to an embodiment of the present invention.
12 to 17 is a graph showing the results of the GPR exploration for each exploration enhancement material that can constitute the exploration material epidermis 120.
18 is a view showing a field experiment process of the second GPR exploration using the exploration material skin portion 120 of the inflating agent for recovering ground depression according to an embodiment of the present invention.
19 and 20 are relative dielectric constants of the detection depth of the EMI paint for the second GPR exploration using the exploration material skin portion 120 of the expansion agent injection device for ground depression recovery according to an embodiment of the present invention. 19 is a graph (FIG. 19) and a graph (FIG. 20) showing the indicator detectable influence range of EMI paint.
21 is a view showing a site GPR exploration process for the detection performance analysis using the surface material 120 of the exploration material 120 of the expansion agent injection device for ground depression recovery according to an embodiment of the present invention.
FIG. 22 is a graph showing a GPR exploration result for the EMI paint, the detectable functional material of FIG. 21.

Hereinafter, a detailed description of a preferred embodiment of the present invention will be described with reference to the accompanying drawings. In the following description of the present invention, detailed descriptions of related known functions or configurations will be omitted when it is determined that the detailed description of the present invention may unnecessarily obscure the subject matter of the present invention.

1 to 3 is a view for explaining the expansion agent injection process by the expansion agent injection device for ground depression recovery according to an embodiment of the present invention. FIG. 4 is a view showing that the apparatus for inflating ground depression recovery according to an embodiment of the present invention is actually manufactured. 5 and 6 are views separately showing the injection liquid mixing needle 160 and the T-shaped injection tube 170 in the ground-inflating recovery expansion device injection device 100 of FIG. 7 is a view showing the structure of the inflating agent injection device for ground depression recovery according to an embodiment of the present invention. 8 is a view showing in detail the components of the injection liquid mixing needle 160 of the ground depression recovery expansion injector 100 according to an embodiment of the present invention. FIG. 9 is a view showing a state in which the T-shaped injection tube 170 is removed as the inflating agent injection device for recovering the ground depression according to an embodiment of the present invention is actually manufactured. 10 is a view for explaining a state in which the bent part 110 on the ground depression recovery expansion agent injection device 100 according to an embodiment of the present invention inflated. FIG. 11 is a view showing an example of an exploration function reinforcing material capable of constructing the exploration material skin part 120 of the inflating agent injection device for recovering ground depressions according to an embodiment of the present invention. 12 to 17 is a graph showing the results of the GPR exploration for each exploration enhancement material that can constitute the exploration material epidermis 120. 18 is a view showing a field experiment process of the second GPR exploration using the exploration material skin portion 120 of the inflating agent for recovering ground depression according to an embodiment of the present invention. 19 and 20 are relative dielectric constants of the detection depth of the EMI paint for the second GPR exploration using the exploration material skin portion 120 of the expansion agent injection device for ground depression recovery according to an embodiment of the present invention. 19 is a graph (FIG. 19) and a graph (FIG. 20) showing the indicator detectable influence range of EMI paint. 21 is a view showing a site GPR exploration process for the detection performance analysis using the surface material 120 of the exploration material 120 of the expansion agent injection device for ground depression recovery according to an embodiment of the present invention. FIG. 22 is a graph showing a GPR exploration result for the EMI paint, the detectable functional material of FIG. 21.

First, referring to FIGS. 1 to 10, the expansion agent injection device 100 for recovering ground depressions includes a bent part 110, an exploration material skin part 120, a straight inlet tube 130, a cap 140, and a cap hole ( 150, an injection liquid mixing needle 160, and a T-shaped injection tube 170 may be included.

Injecting the first liquid 111 and the second liquid 112, which are the expanding agent, cover the cap 140 corresponding to the cover at the upper end of the straight inlet tube 130 having the membrane fiber structure, and in the center of the cap 140, Insert the injection liquid mixing needle 160 through the formed cap hole 150, and by forming a fastening member at the end of the injection liquid mixing needle 160, after all the expansion agent utilized as the filler is injected, the internally generated gas Immediately after being discharged, the end of the injection liquid mixing needle 160 may be inserted into the cap hole 150 to be sealed, so that the linear injection tube 130 as well as the sphere 110 may be filled with an expansion agent formed in a foam type. .

Here, the bent part 110 is formed to expand and receive the first liquid 111 and the second liquid 112 through the injection liquid mixing needle 160 as a functional expansion material for filling the ground cavity. In order to form the exploration function reinforcing material packing portion 120 is formed by coating with the underground exploration function material. In the present invention, the first liquid 111 and the second liquid 112 are expanded to 10 to 13 times the size of the cavity as the expanded chemical liquid used as the functional expansion material for filling the ground cavity in the sphere 110. Accordingly, it is possible to provide an effect that can adjust the amount of expansion. 10A shows a state in which the bent 110 is inflated to 15 cm by adjusting the amount of chemical liquid of the semi-cavity filling functional expansion material, and FIG. 10B is a state in which the bent 110 is expanded to 25 cm.

Ground expansion filling agent consisting of the first liquid agent 111 and the second liquid agent 112 as shown in Figure 1 is injected into the interior of the bent 110, upon the occurrence of ground depression or co-confirmation that causes this, emergency recovery is possible Used as a material.

In addition, the inflating agent injection device 100 for recovering ground depression comprising a bent part 110 for filling the ground joint filling agent consisting of the first liquid agent 111 and the second liquid agent 112 and a straight inlet tube 130. Is manufactured in advance and, like the existing grouting method, does not require the time required for installation of the plant, thus reducing process time and reducing unnecessary use of materials required for joint recovery. Has an economic advantage. In the drawings, the sphere 110 is illustrated as being formed in a spherical shape, but is not limited thereto and may be formed in a single shape.

Insert the two liquid solutions of the first liquid 111 and the second liquid 112 corresponding to the swelling agent in the sphere 110 in the field, the outer surface of the exploration material 120 to the exploration material 120 EMI paint corresponding to the expansion material forming the expansion material is formed, when the expansion material is inflated outside the sphere 110, the expansion agent and the expansion material may be mixed to fill the cavity.

Here, the bent portion 110 and the straight inlet tube 130 to be described later to prevent water from flowing into the expansion agent corresponding to the first liquid 111 and the second liquid 112, silica (SiO ₂ ) or calcium carbonate After stretching the room-temperature-curable silicone rubber using (CaCO ₃ ) as a filler and performing the softening using the tension provided by the multi-feed roller between the thermal stabilization process, it may be formed through the molding of a spherical shape.

More specifically, the bent part 110 and the straight inlet tube 130 may include a filler including silica (SiO ₂ ) or calcium carbonate (CaCO ₃ ), a base containing a room temperature curable silicone rubber, or an ethylene acrylic elastomer, a crosslinking agent, and the like. A sheet prepared by including a crosslinking aid may be manufactured in a spherical or straight shape having a membrane fiber structure according to a mesh process by a needle split method together with softening.

Here, the needle split method allows the softened sheet to pass downward of the needle split roller formed along the outer circumferential surface of the lattice needle, wherein the needle split roller is formed at an entry end for entering the multiple feed rollers. Accordingly, a mesh process is performed by rotation of a needle split roller rotated to form a membrane fiber structure for the stretched sheet in a state in which tension is applied to a plurality of transfer rollers for the sheet coming out of the stretching oven. A regular and uniform lattice structure is formed using timing according to the rotation and rotation. At this time, by using the above-mentioned tension, the needle split roller can perform drag type punching by the lattice-shaped needle of the outer circumferential surface.

By this process, the bent part 110 and the straight inlet tube 130 may improve the collection capability of the first liquid material 111 and the second liquid material 112 filled therein.

As another example of the base, 20 to 80 parts by weight of carbon black, 2 to 3 parts by weight of stearic acid, based on 100 parts by weight of natural rubber (NR), polybutadiene-based rubber (BR), styrene butadiene rubber (SBR) or a combination thereof, In the case of 1 to 3 parts by weight of zinc oxide, the capturing ability can be maximized, and in the emergency recovery situation, the first liquid 111 and the second liquid 112, which are filling materials, are reacted inside the bend 110, and the curing time is increased. It can be inserted into the ground cavity from the infusion device in a controlled manner for 2 to 4 minutes long.

On the other hand, after a predetermined time elapses, the expansion of the filling material is expressed in the interior of the bent 110, and at the same time the compacting effect on the surrounding ground loosening region is expressed.

Here, the first liquid agent 111 is a main material (base), the second liquid agent 112 corresponds to a curing agent, and may be used to form a foamed polyurethane using polyol and diisocyanate, respectively.

That is, the foamed polyurethane is excellent in strength and excellent in durability, the recovery effect may be good, but the water resistance may be a problem due to hydrolysis, but in order to prevent this, it can be solved because it is put in the form of the packing (110). .

In addition, the foamed polyurethane is susceptible to ultraviolet rays, but the ground recessed portion is not irradiated with light, so this is not a problem.

On the other hand, the membrane fiber material constituting the bent 110 is made of geosynthetic fiber and has a property of expanding like a balloon, and if the expandability is large, it may be torn, but since the foam inside secures physical properties, it is not a big problem.

In addition, the exploration material skin 120 applied to the surface of the sphere 110 may be formed of an EMI paint layer, and thus may be formed by the first liquid 111 and the second liquid 112, which are expansion agents in the sphere 10. Since the change of shape can be observed and detected from the outside during expansion, the change of the internal situation can be grasped to provide the advantage of maintenance such as subsequent reinforcement.

On the other hand, the first liquid agent 111 and the second liquid agent 112, as the expansion agent, the expansion performance is expressed at least 25 times in consideration of the ground joint environment and economic efficiency, injection time, injection mechanism, ground joint environment (depth, temperature) In consideration of such an expression can be made within 30 minutes of curing time.

Accordingly, the expansion agent is expanded 25 times or more and may also increase the strength according to the expansion pressure.

In the case of adjusting the curing time of the expansion agent, since the various curing time is configured according to the mixing ratio of the first liquid agent 111 and the second liquid agent 112, the expansion and curing time can be adjusted even if the ground joint environment varies.

In addition, the bent part 110 also has an advantage of active response to the expansion agent behavior and the cavity interior and relaxation area.

The ground recess recovery method using the existing grouting method requires different filler materials and injection techniques according to the ground characteristics.In case of groundwater flow, the required amount of material is excessively exceeded, resulting in economic loss. In some materials, pollutants that cause environmental pollution have been leaked.

However, in case of utilizing the expansion recess injection device for ground depression recovery having the bend 110 according to the present invention, it prevents the outflow or loss of the first liquid 111 and the second liquid 112 which are the expanding agents, The expansion rate of the sphere 110 according to the expansion expression of the expansion agent is at least five times or more. Even if the bent portion 110 does not withstand the expansion pressure of the expansion agent and bursts, there is little concern about loss of fluid since the fluidity of the expansion agent is hardly present after the expansion expression.

On the other hand, the bend 110 surrounding the swelling agent is a geotextile material, and because it is easy to adjust the thickness, elasticity or chemical material properties, the admixture immediately reacts to the groundwater conditions to minimize the amount of loss can secure economical efficiency. .

In addition, the bend 110 has a merit that can be rational emergency recovery by adjusting the degree of expansion of the expansion agent required in advance by reflecting the characteristics of the ground to be applied.

In addition, when using the expansion agent injection device for ground depression recovery according to the present invention 100 ground joint filling rate is expressed more than 100%, the advantage that does not occur in the use of fluidizable fillers for the space not filled after expansion and hardening have.

Next, the exploration material epidermal part 120 is formed by applying an exploration enhancement material to the surface of the bent part 110, so that the shape change of the bent part 110 can be observed and detected from the outside through the GPR exploration. It can provide the advantage of maintenance such as follow-up reinforcement by grasping the change in the internal situation, and may include an EMI paint (Electro Magnetic Interference paint) as an exploration enhancing material. As the explorable material by GPR exploration, it is desirable to cope with the reoccurrence of the recovered cavity performance and to efficiently maintain the status of underground reinforcement as well as the labeling technology for history management.

GPR exploration is used for underground joint surveys with high reliability and shows abnormal signals (relative permittivity) for specific materials.

Accordingly, since the values of the relative dielectric constants are different and show different categories for each material, it is possible to apply the material having a known relative dielectric constant as an earth reinforcement material to enhance the exploration function. 11, EMI sheet (FIG. 11A), EMI paint (FIG. 11B), rubber pad (FIG. 11C), RFID (FIG. 11D), and iron plate (FIG. 11E), the first GPR exploration was performed by applying a total of seven materials such as steelmaking slag (FIG. 11F) and blast furnace slag (FIG. 11G) as a reinforcing function to enhance the exploration function. appear.

In this case, EMI sheet, EMI paint, silicon sheet, RFID, iron plate, etc. are embedded in the ground by size and depth, and exploration is performed, and powder-type exploration enhancement materials such as steel slag and blast furnace slag are explored by pattern at a certain depth. Was performed.

As shown in the graphs of FIGS. 12 to 17, as a result of the GPR exploration, abnormal signals are clearly seen in the EMI sheet, the EMI paint, and the iron plate, and thus, it may be determined that they may be applied as a material for strengthening the exploration function. Since it is difficult to do so, in the present invention, to utilize the EMI paint suitable for the coating method.

In addition, the surface of the probe 110 is applied to the surface of the exploration material 120 by applying EMI paint, so that the shape change of the sphere 110 can be observed and detected from the outside through GPR (Ground Penetrating Radar). It also has the advantage of being able to grasp the change in the situation and to maintain it, such as follow-up reinforcement.

Meanwhile, the ground joint reinforcement is formed by the functional expansion material for the ground cavity filling. For this purpose, the functional expansion material for the ground joint filling is the buried type, the expansion type, and the expansion material type around the reinforcement, and the method of applying each exploration strengthening material. The advantages and disadvantages can be divided as shown in Table 1 below.

Exploration-enhancing substance
Application method Buried around reinforcement Expansion Expansion material type Exploration-enhancing substance EMI sheet, iron plate Blast furnace slag, steel slag EMI paint Advantages 1) Selectable size of exploration enhancement material
2) Good detection performance 1) Can be mixed with expansion solution
2) Detection performance Normal (secret room) 1) Not subject to the shape of the target reinforcement (free application)
2) Good detection performance Disadvantages Difficulty in classifying whether or not there is a loss depending on the location of the exploration enhancement materials 1) Uncertainty of detection performance depending on iron content and degree of denseness
2) Poor detection performance (not secret) Separate process required for paint application

In other words, as a result of evaluating the applicability of exploration enhancing materials using GPR exploration, EMI paints can be analyzed as the most suitable exploration enhancing materials because EMI paint has good detection performance and can be applied to any type of swelling agent. have.

Secondary GPR exploration in order to check the performance effect and detection range by depth and size of the EMI paint, which has been proven as an exploration enhancing material, is performed through the sequential method as shown in FIGS. 18A to 18F. On-site experiments were conducted using exploration enhancing materials.

The field test results of the exploration enhancement material were shown as relative dielectric constants according to the detection depth of the EMI paint of FIG. 19, and are shown as an indicator detectable influence range graph of the EMI paint of FIG. 20. 19 and 20, as a result of such a GPR exploration, it can be detected at a depth of G.L.-25cm ~ 100cm, it is possible to check the influence distance according to the size of the exploration enhancement material.

That is, the relative dielectric constant is detectable by detecting (+) values as (-) values when abnormal signals are detected, and the shallower the depth is, the clearer it is. The 25 cm square reinforcement material has 192% to 208% of its original size, The 50cm exploration enhancing material showed the influence distance in the ratio of 100% to 134%.

Next, (a) to (d) of Figure 21 shows a site GPR exploration process for the analysis of the detection performance of the functional material, Figure 22 is a graph showing the results of GPR exploration of the detectable functional material, as shown in Figure 21, As a result of evaluating the detection performance of functional materials through GPR survey, applying the EMI paint that has been verified for the field application. According to the field experiment for analyzing the detection performance of the expandable functional material, to confirm the detection performance of the functional material coated with EMI paint On-site GPR exploration was carried out, and the exploration was carried out on the assumption that the cavity was filled by digging to a depth of about 40 cm. It can be seen that the contours of the sections (Fig. 22A) and the buried position (Fig. 22B) are distinguished. In addition, the relative dielectric constant is a (+) to (-) value in the depth range of G.L.-30cm ~ 40cm, the abnormal signal is expressed can be analyzed that the functional material can be detected.

Next, the straight input tube 130 is a straight connection portion connected to the ground from the sphere 110 is inserted into the cavity, the length is formed variable but at least 1m by the depth of the cavity is formed at the end of the straight input It has a structure that can be blocked with a cap 140 that can block the end of the tube (130). That is, the straight input tube 130 may provide an advantage that can be installed by cutting to the required length according to the cavity depth 45mm, length 1m.

Cap 140 has a cap hole 150 for inserting the injection liquid mixing needle 160 in the center, the inner diameter of the lower end of the hollow cylindrical opening, the outer end of the upper end of the straight inlet tube 130 It is preferable that the diameter is equal to or larger than 1 to 2 mm.

Cap hole 150 is formed in the center of the upper surface of the cap 140 for inserting the injection liquid mixing needle 160, the injection liquid mixing needle 160 is inserted, thereby supplying from the injection liquid mixing needle 160 The first liquid agent 111 and the second liquid agent 112 may serve to be supplied to the bent part 110 through the straight inlet tube 130.

The injection liquid mixing needle 160 may be used as a consumable in the cap hole 150 of the cap 140 by being integrated or separated. When the injection liquid mixing needle 160 is formed integrally to be mounted to the cap hole 150 of the cap 140, there is also an effect of functioning as a reinforcing agent.

More specifically, the injection liquid mixing needle 160 may include an insertion end 161, a locking end 162, a connection end 163, and a packing end 164 as shown in FIG. 8A.

Insertion end 161 is formed in a funnel shape, when the expansion agent corresponding to the first liquid 111 and the second liquid 112 is provided through the T-shaped injection tube 170, the cap 140 through the inner flow path It performs a function of providing to the bent part 110 through a straight input tube 130 of the form connected to. Meanwhile, in another embodiment of the present invention, as shown in FIG. 8B, the first liquid agent 111 and the second liquid agent 112 are automatically rotated by the force lowered by gravity in the inner flow path of the insertion end 161. Since the stage 161a is further formed, the mixing ratio can be increased by stirring the first liquid 111 and the second liquid 112.

The locking end 162 is formed at the upper end of the insertion end 161 longer than the diameter of the entire upper end of the insertion end 161 by 1/4 to 1/5 the length, so that the cap 140 of the insertion end 161 When the expansion hole is inserted into the cap hole 150, the insertion end 161 penetrates the top surface of the cap 140 to prevent falling into the linear injection tube 130.

The connecting end 163 is formed by a cylindrical member having a diameter of 1.5 times to 2.2 times longer than the diameter of the lower end of the insertion end 161 between the locking end 162 and the patting end 164, so that the packing end 164 will be described later. When closing the cap hole 150 by the same position as the top surface of the cap 140, the bottom sealing structure by the locking end 162, the top sealing structure by the packing end 164 is possible as shown in FIG. The diameter of the connection end 163 may be formed between one third and the same level of the diameter of the cap hole 150.

The packing end 164 is formed to have the same diameter as the locking end 162, so that the upper end of the straight inlet tube 130 having a membrane fiber structure in injecting the first liquid agent 111 and the second liquid agent 112, which are the expanding agent. Put the cap 140 corresponding to the cover at the end, and insert the injection liquid mixing needle 160 through the cap hole 150 formed in the center of the cap 140, forming a fastening member at the end of the injection liquid mixing needle 160 By doing so, after all the expansion agent utilized as the filler is injected, when the external generated gas is discharged to some extent immediately to provide the external force to the end of the injection liquid mixing needle 160, the closed structure at the top of the cap hole 150 By providing, not only the sphere 110 but also the linear inlet tube 130 serves to be filled with the expansion agent formed in the foam type.

The T-shaped injection pipe 170 includes two supply pipes and two supply pipes corresponding to the pipes extending in the horizontal direction on both sides of the upper end to provide the first liquid 111 and the second liquid 112, respectively. The first liquid agent 111 and the second liquid agent 112 are through-flow channels commonly formed in the centers of the packing end 164, the connection end 163, and the locking end 162 of the injection liquid mixing needle 160 at the center of the liquid injection needle 160. May be formed into one discharge conduit to provide an expansion agent in a mixed state.

On the other hand, the through flow path commonly formed in the center of the packing end 164, the connection end 163, the locking end 162 of the mixing needle 160 is formed in the structure connected to the flow path inside the insertion end 161 described above. After being provided in a structure that provides a sealing structure at the upper end of the cap hole 150 through the external force of the upper end of the packing end 164, it may be packed through the needle-type auxiliary packing member.

In the present invention, the swelling agent is formed by utilizing a polyol as the first liquid agent 111 and an isocyanate as the second liquid agent 112, so that the inside of the detection material epidermis 120 corresponding to the functional swelling material in the form of quantitative injection is formed. It provides a structure that is formed. Injection method of the expansion agent is divided into three types according to the gel time, as shown in Table 2, considering that the gel time is about 120 seconds is preferred to inject in a 1.5shot method.

Injection method 1.0shot 1.5shot 2.0shot Gel time
(Gel time) About 20 minutes or more About 2-10 minutes About 20 seconds Injection method All materials are mixed in the mixing plant and sprayed to the nozzle A and B liquids are separated from the mixing plant and mixed by spraying at the intermediate nozzle A, B, Mixing Plant
Is separated into a double tube
To be transported in the ground
Spraying method selection ○

Meanwhile, gas is generated when the isocyanate reacts with the polyol with the first liquid 111 and with the second liquid 112. Insufficient removal of the gas produced at this time may cause a reduction in the strength of the expanded expander and the volume of the expander. Accordingly, in order to prevent the strength decrease and the volume reduction, the form of the cap 140, which is a packer, is preferably manufactured to enable ventilation with a cap hole 150.

In the process of injecting the inflating agent and inflating the inflating material, when the first liquid 111 and the second liquid agent 112 are completely injected, after about 120 seconds, the gas is generated as the inflating agent is expanded. As the expansion proceeds, the shape of the cap 140 is that the gas is released from the cap hole 150 and at the same time the expansion agent is expanded along the straight inlet tube 130. After insertion of the injection liquid mixing needle 160 mounted on the cap hole 150 corresponding to the vent hole of the cap 140, the expansion is further performed at the sphere 110 coated with the detection material epidermis 120 as the expansion material.

Here, it is possible to sufficiently ventilate even when the injection liquid mixing needle 160 is spread, and is blocked in the hole of the injection liquid mixing needle 160 as the inflating agent is solidified (it can suppress the ejection of the expanding agent through the needle). .

In this way, when attaching a sealing member such as cement when performing a grouting method for an existing cavity, it is possible to overcome the limitation of causing secondary damage or tertiary damage when there is a pipe or a pipe under the cavity.

As described above, the specification and the drawings have been described with respect to the preferred embodiments of the present invention, although specific terms are used, it is only used in a general sense to easily explain the technical contents of the present invention and help the understanding of the invention. It is not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention can be carried out in addition to the embodiments disclosed herein.

100: expansion agent injection device for ground depression recovery
110: bend 120: skin of the detection material
130: straight input tube 140: cap
150: cap hole 160: injection liquid mixing needle
170: T-shaped injection tube

Claims (5)

It includes a bent portion 110, the exploration material skin portion 120, a straight inlet tube 130, a cap 140, a cap hole 150, injection liquid mixing needle 160, T-shaped injection tube 170, Injecting the first liquid 111 and the second liquid 112, which are the expanding agent, cover the cap 140 corresponding to the cover at the upper end of the straight inlet tube 130 having the membrane fiber structure, and in the center of the cap 140, Insert the injection liquid mixing needle 160 through the formed cap hole 150, and by forming a fastening member at the end of the injection liquid mixing needle 160, after all the expansion agent utilized as the filler is injected, the internally generated gas in advance Immediately after being discharged by a set amount, the end of the injection liquid mixing needle 160 is inserted into the cap hole 150 to be sealed, so that the linear injection tube 130 as well as the sphere 110 are filled with the expansion agent formed in the foam type. In the ground depression recovery expansion injection device 100,
Bend 110,
It is formed to expand and receive the first liquid 111 and the second liquid 112 through the injection liquid mixing needle 160 as a functional expansion material for filling the ground cavity, the outside is coated with a ground exploration functional material for detection Forming the exploration function reinforcing material packing part 120 and inserting the two liquid solutions, the first liquid 111 and the second liquid 112 corresponding to the expanding agent, in the sphere 110 at the site. The outside of the sphere 110 is formed by applying the EMI paint corresponding to the expansion material forming the surface of the exploration material 120, the expansion material and the expansion material is mixed when the expansion material is expanded outside the sphere 110 Can fill the
The bent portion 110 and the straight inlet tube 130,
Prevent water from flowing into the expansion agent corresponding to the first liquid agent 111 and the second liquid agent 112, and after stretching the room temperature curing type silicone rubber using silica (SiO ₂ ) or calcium carbonate (CaCO ₃ ) as a filler It is manufactured in spherical shape or linear shape with membrane fiber structure according to the mesh process by needle split method together with softening using tension provided by the multi-feed roller between thermal stabilization processes. In the needle needle split method, the lattice-shaped needles pass downward of the needle split rollers formed along the outer circumferential surface, and the needle split rollers are formed at the entry end for entering the multiple feed rollers, so that the sheet exits from the drawing oven. To form a membrane fiber structure for the stretched sheet with tension applied to a plurality of feed rollers for The mesh process by rotating the needle split roller is rotated to form a regular and uniform lattice structure using the tension and the timing according to the rotation. The needle split roller is a drag type punching by the lattice-shaped needle of the outer peripheral surface. By performing drag type punching, the capturing ability of the first liquid 111 and the second liquid 112 filled into the bent part 110 and the straight inlet tube 130 is improved.
Exploratory material epidermis 120,
Formed by applying an exploration enhancement material to the surface of the sphere 110, the shape change of the sphere 110 can be observed and detected from the outside through the GPR exploration, it is possible to grasp the change in the internal situation, including subsequent reinforcement It is possible to maintain, and includes EMI magnetic (Electro Magnetic Interference paint) as an exploration enhancing material,
Cap 140,
Cap hole 150 for inserting the injection liquid mixing needle 160 is formed in the center, the inner diameter of the lower end of the hollow cylindrical opening is equal to the outer diameter of the upper end of the straight inlet tube 130 or 1 Is formed to 2mm larger,
The cap hole 150,
It is formed in the center of the upper surface of the cap 140 to insert the injection liquid mixing needle 160, the injection liquid mixing needle 160 is inserted, thereby the first liquid 111 supplied from the injection liquid mixing needle 160 ) And the second liquid 112 performs a role that can be supplied to the bent 110 through the straight inlet tube 130,
Injection liquid mixing needle 160,
The cap hole 150 of the cap 140 is used as an integral or separate type to be used as a consumable, and when formed integrally to be mounted to the cap hole 150 of the cap 140, it acts as a reinforcement, and the insertion end 161 Includes, end 162, connecting end 163, packing end 164,
Insertion end 161,
When the expansion agent corresponding to the first liquid 111 and the second liquid 112 is provided through the T-shaped injection tube 170 by being formed in a funnel shape, the linear shape of the shape connected to the cap 140 through an internal flow path is provided. A rotary end that performs the function of providing to the bent portion 110 via the input pipe 130, the first liquid agent 111 and the second liquid agent 112 is automatically rotated by the force descending by gravity in the inner flow path By further forming 161a, the mixing ratio is increased by stirring the first liquid 111 and the second liquid 112,
The locking end 162,
The cap hole 150 of the cap 140 of the insertion end 161 is formed at the upper end of the insertion end 161 by a length of 1/4 to 1/5 longer than the diameter of the entire upper end of the insertion end 161. When inserted into the expansion agent is performed to insert the insertion end 161 penetrates the top surface of the cap 140 to prevent falling in the direction of the straight inlet tube 130,
The connection end 163,
Between the locking end 162 and the patting end 164 is formed of a cylindrical member having a diameter of 1.5 times to 2.2 times longer than the diameter of the lower end of the insertion end 161, the cap hole 150 by the packing end 164 It is located at the same height as the top surface of the cap 140 when closed to perform the function of enabling the bottom sealed structure by the locking end 162, the top sealed structure by the packing end 164, the diameter of the cap hole ( From one third of the diameter of 150) to the same size,
Packing stage 164,
Caps corresponding to the cover at the upper end of the straight inlet tube 130 having a membrane fiber structure in the injection of the first liquid 111 and the second liquid 112, which is an expanding agent, by being formed with the same diameter as the locking end 162 Covering the 140, inserting the injection liquid mixing needle 160 through the cap hole 150 formed in the center of the cap 140, by forming a fastening member at the end of the injection liquid mixing needle 160, which is utilized as a filler After all of the expanding agent is injected, when the external generated gas is supplied to the end of the injection liquid mixing needle 160 immediately after the predetermined discharge, by providing a closed structure at the top of the cap hole 150, the bent part 110 ) As well as the linear inlet tube 130 serves to be filled with the expansion agent formed in the foam type,
T-shaped injection tube 170,
In order to provide the first liquid agent 111 and the second liquid agent 112, two supply pipes corresponding to the pipelines extending in the horizontal direction on both sides of the upper end portion, and an injection liquid mixing needle in the center of the two supply pipes ( An expansion agent in a state where the first liquid material 111 and the second liquid material 112 are mixed in a through flow path formed in the center of the packing end 164, the connection end 163, and the locking end 162 of the 160. Is formed of one discharge pipe,
The through flow path commonly formed in the center of the packing end 164, the connection end 163, and the locking end 162 of the mixing needle 160 is formed in a structure connected to the flow path inside the insertion end 161. Expansion agent injection device for ground depression recovery.
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