Method of repairing a pothole on the paved road

Abstract

The present invention is a technology for repairing potholes formed on the surface of a pavement, and is a repair method that first reinforces the ground in the area adjacent to the pothole when repairing potholes where the surface of the pavement is peeling off. It involves first forming multiple insert holes into the ground extending to the surrounding area including the pothole, then deeply inserting a grouting pipe into the insert holes, and injecting grout material into the grouting pipe at a predetermined pressure, thereby forming a large ground support block for each insert hole and the adjacent ground. According to the present invention, by forming multiple insert holes in the ground corresponding to the pothole area and then inserting a grouting pipe to inject grout material, the ground in the area including the damaged pothole is firmly repaired, and consequently, there is an advantage in that the occurrence of a pothole is suppressed in the area where the pothole was created.

Description

Technology Field

[0001] The present invention relates to a technology for repairing potholes formed on the surface of a packaging coating.

[0002] More specifically, the present invention is a repair method for repairing potholes where the surface of a paved road is falling off, in which the ground beneath the pothole and adjacent areas is first reinforced. This method involves first forming multiple insert holes into the ground extending to the surrounding area containing the pothole, then deeply inserting a grouting pipe into the insert holes and injecting grout material into the grouting pipes at a predetermined pressure, thereby forming a large ground support block for each insert hole and the adjacent ground. Background Technology

[0004] [Fig. 1] is an exemplary diagram showing a state in which a grouting pipe is fitted to implement the present invention for a cross-section of a general paved road.

[0005] Referring to [Fig. 1], road pavements generally consist of concrete pavements and asphalt pavements. During the process of use after paving, damage such as potholes occurs due to vehicle loads from traffic volume or natural environmental factors.

[0006] Furthermore, due to the recent increase in vehicle size and traffic volume, damage such as potholes on the surface of paved roads is progressively worsening, and the cycle for regular maintenance work to repair this damage is becoming shorter.

[0007] Here, various types of surface damage to paved roads are cited, such as cracks, plastic deformation (rutting), and potholes, but potholes are considered the biggest cause of traffic accidents.

[0008] Existing repair methods for damaged sections of paved roads involve cutting out a specific part of the road and repaving the cut section; when the damaged area is localized, there is also a method of repairing only a localized portion of the surface to reduce the repair period or cost.

[0009] In particular, when damage such as potholes occurs locally, the general repair method involves applying asphalt concrete, a repair material, to the damaged area.

[0010] That is, the worker fills the localized area of ​​the damaged surface using a work shovel or the like, or the worker drags a transport asphalt injection device with a handle on the road surface and pours it onto the damaged area.

[0011] In most of these cases, the problem of potholes re-forming in the repaired areas persists, but resolving the issue is difficult when the underlying ground beneath the potholes cannot be fundamentally repaired. Prior art literature

[0013] Patent Application No. 10-2015-0020990 "Pothole Repair Method" Patent Application No. 10-2017-0119406 "Pothole-Specific Paving Machine and Pothole Treatment Method Using the Same" Patent Application No. 10-2014-0054220 "Pothole Repair Paving Method for Cross-Sections of Road Pavement Surfaces" The problem to be solved

[0014] The present invention is proposed in consideration of the above-mentioned points, and the objective of the present invention is to provide a pothole repair method for paved roads that repairs the underground portion of the damaged part in a single step when repairing potholes formed on the surface of a paved road.

[0015] Furthermore, the objective of the present invention is to provide a pothole repair method for paved roads that can suppress the recurrence of potholes in the area where the pothole was created by undergoing a process of firmly repairing the ground, which is the underground portion of the pothole, when repairing potholes formed on the surface of the pavement coating. means of solving the problem

[0017] To achieve the above objective, a pothole repair method for a paved road according to the first embodiment of the present invention may be configured to include: a hole forming step of forming a plurality of insert holes in a pothole-containing area formed at a predetermined location on the paved road; a pipe insertion step of individually inserting a grouting pipe, having a plurality of discharge holes formed at predetermined intervals along the longitudinal direction of its body, into the plurality of insert holes; a hose mounting step of individually mounting a grouting hose on the tip of each grouting pipe; a grouting injection step of injecting grout material through the grouting hose at a predetermined pressure so that the grout material can be discharged through the plurality of discharge holes; and a road paving step of applying a road repair paving material to the pothole-containing area in response to the hardening of the injected grout material.

[0018] A pothole repair method for a paved road according to a second embodiment of the present invention may be configured to include: a road paving step of applying a road repair paving material to a pothole-containing area formed at a predetermined location on the paved road; a hole forming step of forming a plurality of insert holes in the pothole-containing area; a pipe insertion step of individually inserting a grouting pipe, having a plurality of discharge holes formed at predetermined intervals along the longitudinal direction of its body, into the plurality of insert holes; a hose mounting step of individually mounting a grouting hose on the tip of each grouting pipe; and a grouting injection step of injecting grout material through the grouting hose at a predetermined pressure so that the grout material can be discharged through the plurality of discharge holes.

[0019] In the grouting injection stage, preferably, a predetermined pressure for injecting grout material through the grouting hose is gradually weakened.

[0020] In the pipe insertion stage, preferably, the grouting pipe is inserted up to the roadbed of the paved road corresponding to a predetermined location.

[0021] Meanwhile, during the pipe insertion stage, the spacing between the grouting pipe and the adjacent grouting pipe can be formed within the range of 150 mm to 250 mm.

[0022] At this time, during the grouting injection stage, the injection pressure of the grout material through the grouting hose can be set within the range of 5 kgf / cm2 to 6 kgf / cm2. Effects of the invention

[0024] The present invention offers the advantage of repairing the underground portion of the damaged pothole-containing area in a single step by forming multiple insert holes in the ground corresponding to the pothole area and then inserting a grouting pipe to inject grout material.

[0025] In addition, the present invention also exhibits the advantage of preventing the recurrence of potholes in the area where the pothole was created by forming multiple insert holes in the ground corresponding to the pothole area and then inserting a grouting pipe to inject grout material, thereby firmly repairing the underground portion of the ground containing the damaged pothole area.

[0026] In addition, the present invention also exhibits the advantage of preventing surface lifting in an area containing potholes while rapidly performing repair work by forming a specific range of spacing between multiple grouting pipes and setting the injection pressure of the grout material to a specific range. Brief explanation of the drawing

[0028] [Fig. 1] is an exemplary diagram showing a state in which a grouting pipe is fitted to implement the present invention for a cross-section of a general paved road. [Fig. 2] is a plan view of a part of a paved road in which a pothole is formed, and is an example diagram showing a state in which a plurality of grouting pipes are fitted into the area containing the pothole. [Fig. 3] is a diagram showing the usage state of performing the pothole repair method for a paved road according to the present invention. [Fig. 4] is a diagram showing the usage state of performing the pothole repair method for a paved road according to the present invention. [Fig. 5] is a diagram showing the usage state of performing the pothole repair method for paved roads according to the present invention. [Fig. 6] is a diagram showing the usage state of performing the pothole repair method for paved roads according to the present invention. [Fig. 7] is a flowchart of the process of performing a pothole repair method on a paved road according to the first embodiment of the present invention. [Fig. 8] is a flowchart of the process of performing a pothole repair method on a paved road according to the second embodiment of the present invention. Specific details for implementing the invention

[0029] The present invention will be described in detail below with reference to the drawings.

[0030] The pothole repair method for a paved road according to the first embodiment of the present invention is carried out through the following process as shown in [Fig. 7].

[0031] Step S110: A plurality of insert holes (not shown) are formed in an area containing a pothole (10) formed at a predetermined location on the paved road.

[0032] Here, the area including the porthole (10) means an area extending to the inside of the porthole (10) and the periphery of the porthole (10) as shown in [Fig. 2].

[0033] Meanwhile, the reason potholes (10) are formed is that they may occur due to vehicle loads caused by traffic volume or natural environmental factors (e.g., underground waterways) during the process of using the paved road after the road has been paved.

[0034] As a result, if only the pothole (10) at the location corresponding to the 'surface part' in [Fig. 1] is repaired, the underground waterway, etc. below it remains unrepaired, and subsequently, the pothole (10) will recur at that location due to continuous exposure to vehicle loads caused by traffic volume or continuous exposure to natural environmental factors.

[0035] Step S120: To solve this recurrence problem, a plurality of insert holes are formed deep into the ground from the surface of the paved road as shown in [Figs. 1] to [Figs. 6], and then a grouting pipe (20) is inserted into each insert hole.

[0036] At this time, the grouting pipe (20) forms a plurality of discharge holes at predetermined intervals along the longitudinal direction of its body as shown in [Fig. 1].

[0037] Here, the grouting pipe (20) can be formed with an inner diameter of approximately 35 mm to 55 mm.

[0038] Step S130: And, a grouting hose (110) is individually mounted on the tip of each grouting pipe (20) as shown in [Figs. 3] to [Figs. 6]. Of course, the connection between each grouting pipe (20) and each grouting hose (110) must be connected in such a way that it can maintain a watertight seal against external forces of injection pressure.

[0039] Step S140: Next, grout material is injected through a grouting hose (110) at a predetermined pressure as shown in [Figs. 3] to [Figs. 6] so that grout material can be discharged through a plurality of discharge holes formed in the grouting pipe (20).

[0040] At this time, the predetermined injection pressure injected through the grouting hose (110) is preferably set within the range of 5 kgf / cm2 to 6 kgf / cm2.

[0041] If the injection pressure is lower than the pressure in the range of 5 kgf / cm2 to 6 kgf / cm2, the lateral injection through the discharge hole of the grouting pipe (20) is not carried out smoothly, and if the injection pressure exceeds the range of 5 kgf / cm2 to 6 kgf / cm2, depending on the condition of the 'surface part' of the paved road, an area that lifts up like a blister on the body may occur.

[0042] As such, in order to stably inject grout material while maintaining the condition of the paved road's 'surface' regardless of the condition of the paved road's 'surface', it is desirable to set the injection pressure to a range of 5 kgf / cm2 to 6 kgf / cm2.

[0043] In addition, in order to ensure smooth lateral injection through the discharge hole of the grouting pipe (20), the spacing distance (d1, d2) between the grouting pipe (20) and the adjacent grouting pipe (20) is preferably formed within the range of 150 mm to 250 mm, referring to [Fig. 2].

[0044] Step S150: After the grout material is injected into the multiple grouting pipes (20), a road repair paving material is applied to the area containing the pothole (10) in response to the hardening of the injected grout material.

[0045] Thus, repair work corresponding to the pothole (10) on the paved road according to the first embodiment can be completed.

[0046] On the other hand, it is preferable that the predetermined pressure for injecting grout material through the grouting hose (110) in step S140 be gradually reduced in the range of 5 kgf / cm2 to 6 kgf / cm2.

[0047] Here, the point at which the worker stops injecting grout material through the grouting hose (110) can be visually stopped at the timing when the grout material already being injected flows back to the tip of the grouting pipe (20).

[0048] On the other hand, in step S120, it is preferable that the grouting pipe (20) be inserted into the ‘roadbed’ corresponding to the lower part of the paved road as in [Fig. 1], corresponding to a predetermined location on the paved road where the pothole (10) in [Fig. 2] is formed.

[0049] As a result, when the grout material injected into the grouting pipe (20) hardens, the ground in the area containing the pothole (10) forms a hard block like a large mass, for example, blocking underground waterways in the ground and supporting the high load of vehicles continuously passing through the paved road.

[0051] The pothole repair method for a paved road according to the second embodiment of the present invention is carried out through the following process as shown in [Fig. 8].

[0052] Step S210: Road repair paving material is applied to the area including the pothole (10) formed at a predetermined location on the paved road.

[0053] Step S220: Form multiple insert holes (not shown) in the area containing the port hole (10).

[0054] Here, the area including the porthole (10) means an area extending to the inside of the porthole (10) and the periphery of the porthole (10) as shown in [Fig. 2].

[0055] Meanwhile, the reason potholes (10) are formed is that they may occur due to vehicle loads caused by traffic volume or natural environmental factors (e.g., underground waterways) during the process of using the paved road after the road has been paved.

[0056] As a result, if only the pothole (10) at the location corresponding to the 'surface part' in [Fig. 1] is repaired, the underground waterway, etc. below it remains unrepaired, and subsequently, the pothole (10) will recur at that location due to continuous exposure to vehicle loads caused by traffic volume or continuous exposure to natural environmental factors.

[0057] Step S230: To solve this recurrence problem, a plurality of insert holes are formed deep into the ground from the surface of the paved road as shown in [Figs. 1] to [Figs. 6], and then a grouting pipe (20) is inserted into each insert hole.

[0058] At this time, the grouting pipe (20) forms a plurality of discharge holes at predetermined intervals along the longitudinal direction of its body as shown in [Fig. 1].

[0059] Here, the grouting pipe (20) can be formed with an inner diameter of approximately 35 mm to 55 mm.

[0060] Step S240: And, a grouting hose (110) is individually mounted on the tip of each grouting pipe (20) as shown in [Figs. 3] to [Figs. 6]. Of course, the connection between each grouting pipe (20) and each grouting hose (110) must be connected in such a way that it can maintain a watertight seal against external forces of injection pressure.

[0061] Step S250: Next, grout material is injected through a grouting hose (110) at a predetermined pressure as shown in [Figs. 3] to [Figs. 6] so that grout material can be discharged through a plurality of discharge holes formed in the grouting pipe (20).

[0062] Thus, repair work corresponding to the pothole (10) on the paved road according to the second embodiment can be completed.

[0063] At this time, the predetermined injection pressure injected through the grouting hose (110) is preferably set within the range of 5 kgf / cm2 to 6 kgf / cm2.

[0064] If the injection pressure is lower than the pressure in the range of 5 kgf / cm2 to 6 kgf / cm2, the lateral injection through the discharge hole of the grouting pipe (20) is not carried out smoothly, and if the injection pressure exceeds the range of 5 kgf / cm2 to 6 kgf / cm2, depending on the condition of the 'surface part' of the paved road, an area that lifts up like a blister on the body may occur.

[0065] As such, in order to stably inject grout material while maintaining the condition of the paved road's 'surface' regardless of the condition of the paved road's 'surface', it is desirable to set the injection pressure to a range of 5 kgf / cm2 to 6 kgf / cm2.

[0066] In addition, in order to ensure smooth lateral injection through the discharge hole of the grouting pipe (20), the spacing distance (d1, d2) between the grouting pipe (20) and the adjacent grouting pipe (20) is preferably formed within the range of 150 mm to 250 mm, referring to [Fig. 2].

[0067] On the other hand, it is preferable that the predetermined pressure for injecting grout material through the grouting hose (110) in step S250 be gradually reduced in the range of 5 kgf / cm2 to 6 kgf / cm2.

[0068] Here, the point at which the worker stops injecting grout material through the grouting hose (110) can be visually stopped at the timing when the grout material already being injected flows back to the tip of the grouting pipe (20).

[0069] On the other hand, in step S230, the grouting pipe (20) is preferably inserted into the ‘roadbed’ corresponding to the lower part of the paved road as in [Fig. 1], corresponding to a predetermined location on the paved road where the pothole (10) in [Fig. 2] is formed.

[0070] As a result, when the grout material injected into the grouting pipe (20) hardens, the ground in the area containing the pothole (10) forms a hard block like a large mass, for example, blocking underground waterways in the ground and supporting the high load of vehicles continuously passing through the paved road.

[0072] On the other hand, when performing the process as in [Fig. 7] and [Fig. 8], a corresponding injection device must be provided for injecting grout material into the grouting pipe (20).

[0073] That is, we will examine the injection device for repairing potholes in paved roads according to the present invention with reference to [Figs. 3] to [Figs. 6].

[0074] The injection device for repairing potholes in a paved road according to the present invention may be configured to include a grouting hose (110), a mono-pumping member (120), an A-liquid pumping hose member (131), a B-liquid pumping hose member (132), a multi-tube guide member for A-liquid (141), a multi-tube guide member for B-liquid (142), an A-liquid pressure sensing member (151), a B-liquid pressure sensing member (152), and a drive control member (160), as shown in FIGS. 3 to 6.

[0075] As shown in FIGS. 3 to 6, a plurality of grouting hoses (110) are provided and each is connected to a plurality of grouting pipes (20) placed on the ground, and grout material provided from the outside is injected into each of the plurality of grouting pipes (20).

[0076] For example, referring to FIGS. 3 to 6, several insert holes (e.g., 12 holes) facing into the ground are formed in the area containing the pothole (10), and grouting pipes (20) are individually inserted into the insert holes.

[0077] At this time, as shown in FIG. 3, for example, grouting material is injected at a predetermined pressure while three grouting hoses (110) are connected to the ends of three grouting pipes (20), and then each grouting hose (110) is disconnected from each grouting pipe (20), and then, as shown in FIG. 4, grouting material is injected at a predetermined pressure again while the three grouting hoses (110) are connected to the ends of three grouting pipes (20). Subsequently, the process as shown in FIG. 3 and FIG. 4 can be carried out sequentially multiple times as shown in FIG. 5 and FIG. 6.

[0078] Meanwhile, the grouting hoses (110) may be installed in numbers of 12, for example, rather than 3 as in [Figs. 3] to [Figs. 6]. In this case, when the 12 grouting hoses (110) inject grout material at a predetermined pressure, the grout material may be injected into the 12 grouting pipes (20) all at once.

[0079] The mono-pumping member (120) can be configured to be connected to each of the grouting hoses (110) so as to be communicable, as shown in FIGS. 3 to 6, and to receive the A liquid member of the grout material from the outside and pump it toward each grouting hose (110), and at the same time receive the B liquid member of the grout material separately from the A liquid member and pump it toward each grouting hose (110).

[0080] Here, liquid member A and liquid member B are each formed in a liquid form to form a grout material, and the description of their specific compositions is omitted. However, since one of liquid member A and liquid member B contains a hardening agent, when liquid member A and liquid member B are mixed to form a grout material, rapid hardening can be achieved in a so-called ultra-rapid hardening manner.

[0081] And, referring to FIGS. 3 to FIGS. 6, the mono-pumping member (120) may be equipped with an A-liquid pumping area member (121), a B-liquid pumping area member (122), and a heterogeneous liquid simultaneous pumping member (123).

[0082] Referring to FIGS. 3 to FIGS. 6, the A liquid pumping area member (121) can be configured to receive an A liquid member from an A liquid-dedicated tank member (161) through an A liquid transfer hose member (171) and transfer it to a plurality of A liquid-dedicated multi-tube guide members (141).

[0083] Referring to FIGS. 3 to FIGS. 6, the B liquid pumping area member (122) can be configured to receive the B liquid from the B liquid dedicated tank member (162) through the B liquid transfer hose member (172) and transfer it to a plurality of B liquid dedicated multi-tube guide members (142).

[0084] Referring to FIGS. 3 to FIGS. 6, the heterogeneous liquid simultaneous pumping member (123) is configured to simultaneously pump the A liquid member in the A liquid pumping area member (121) and the B liquid member in the B liquid pumping area member (122).

[0085] Through this, the A liquid member within the A liquid pumping area member (121) moves to a plurality of A liquid pumping hose members (131) via the A liquid dedicated multi-tube guide member (141) with reference to [Figs. 3] to [Figs. 6], and then is pumped to the corresponding grouting pipe (20) while being mixed with the B liquid member in the corresponding grouting hose (110).

[0086] And, referring to FIGS. 3 to FIGS. 6, the B liquid member in the B liquid pumping area member (122) moves to a plurality of B liquid pumping hose members (132) via a B liquid dedicated multi-tube guide member (142), and then is mixed with the A liquid member in the corresponding grouting hose (110) and pumped into the corresponding grouting pipe (20).

[0087] A liquid pumping hose member (131) may be provided in multiple numbers as shown in [Figs. 3] to [Figs. 6].

[0088] As shown in FIGS. 3 to 6, the A liquid pumping hose member (131) has one end of its body connected to a multi-tube guide member (141) dedicated to A liquid, from which the A liquid pumped from the mono-pumping member (120) is ejected, and the other end of its body is individually connected to each grouting hose (110), thereby individually delivering the A liquid to each grouting hose (110).

[0089] The B liquid pumping hose member (132) may be provided in multiple numbers as shown in [Figs. 3] to [Figs. 6].

[0090] As shown in FIGS. 3 to 6, the B liquid pumping hose member (132) has one end of its body connected to a B liquid-dedicated multi-tube guide member (142) from which the B liquid member pumped from the mono-pumping member (120) is ejected, and the other end of its body is individually connected to each grouting hose (110), thereby individually delivering the B liquid member to each grouting hose (110).

[0091] As shown in FIGS. 3 to 6, one end of the body of the multi-tube guide member (141) is connected to a mono-pumping member (120) that pumps the A-liquid member, and the other end of the body is individually connected to a plurality of A-liquid pumping hose members (131).

[0092] As a result, the A-liquid dedicated multi-tube guide member (141) guides the A-liquid pumped from the mono-pumping member (120) to be individually supplied to a plurality of A-liquid pumping hose members (131).

[0093] As shown in FIGS. 3 to 6, one end of the body of the multi-tube guide member (142) is connected to a mono-pumping member (120) that pumps the B-liquid member, and the other end of the body is individually connected to a plurality of B-liquid pumping hose members (132).

[0094] As a result, the B-liquid dedicated multi-tube guide member (142) guides the B-liquid member pumped from the mono-pumping member (120) to be individually supplied to a plurality of B-liquid pumping hose members (132).

[0095] Referring to FIGS. 3 to FIGS. 6, the A liquid pressure sensing member (151) may preferably be provided in multiple numbers and may be configured to individually sense the fluid pressure flowing within the multiple A liquid pumping hose members (131) while being individually mounted on the multiple A liquid pumping hose members (131).

[0096] With reference to FIGS. 3 to FIGS. 6, the B-liquid pressure sensing member (152) may preferably be provided in multiple numbers and may be configured to individually sense the fluid pressure flowing within the multiple B-liquid pumping hose members (132) while being individually mounted on the multiple B-liquid pumping hose members (132).

[0097] Referring to FIGS. 3 to FIGS. 6, the drive control member (160) may be configured to receive each fluid pressure data detected by a plurality of A fluid pressure sensing members (151) and a plurality of B fluid pressure sensing members (152) individually from the plurality of A fluid pressure sensing members (151) and a plurality of B fluid pressure sensing members (152), and to display the data in sections on a display member (not shown).

[0098] Here, the display member may be composed of a drive control member (160) and a single device.

[0100] Meanwhile, the injection device for repairing potholes in a paved road according to the present invention may further comprise an opening / closing valve member, a backflow blocking check valve member a (141a), a backflow blocking check valve member b (142b), a grout tank member (170), and a grout material transfer member (180).

[0101] The opening / closing valve member (not shown) can be individually mounted on the A-liquid-only multi-tube guide member (141) and the B-liquid-only multi-tube guide member (142) at positions corresponding to the plurality of A-liquid-pumping hose members (131) and the plurality of B-liquid-pumping hose members (132).

[0102] The opening and closing valve member (not shown) may be individually mounted on a plurality of A liquid pumping hose members (131) and a plurality of B liquid pumping hose members (132).

[0103] In addition, the opening and closing valve member (not shown) is configured to open or close individually, thereby allowing the movement paths of the liquid A through the liquid A pumping hose member (131) supplied from the mono-pumping member (120) and the liquid B through the liquid B pumping hose member (132) to be opened or closed individually.

[0104] At this time, the drive control member (160) can control the operation to close the corresponding open / close valve member among the multiple open / close valve members that exceeds the preset value when one or more of the fluid pressure data detected by the multiple A fluid pressure sensing members (151) and the multiple B fluid pressure sensing members (152) as shown in FIGS. 3 to 6 exceeds the preset value.

[0105] The backflow blocking check valve member a (141a) can be configured to block backflow from the A-liquid dedicated multi-tube guide member (141) to the A-liquid pumping area member (121) by being positioned in a path connecting the A-liquid dedicated multi-tube guide member (141) and the A-liquid pumping area member (121) as shown in FIGS. 3 to 6.

[0106] Referring to FIGS. 3 to 6, for example, when the A liquid transfer hose member (181) is blocked or the A liquid member in the A liquid-only tank member (171) is depleted first, the B liquid member pumped via the B liquid-only multi-tube guide member (142) and the B liquid pumping hose member (132) is blocked by the backflow blocking check valve member a (141a) from the corresponding grouting hose (110) through the A liquid pumping hose member (131) and the A liquid-only multi-tube guide member (141) to the A liquid pumping area member (121).

[0107] The backflow blocking check valve member b (142b) can be configured to block backflow from the B-liquid dedicated multi-tube guide member (142) to the B-liquid pumping area member (122) by being positioned in a path connecting the B-liquid dedicated multi-tube guide member (142) and the B-liquid pumping area member (122) as shown in FIGS. 3 to 6.

[0108] Referring to FIGS. 3 to 6, for example, when the B liquid transfer hose member (182) is blocked or the B liquid member in the B liquid-dedicated tank member (172) is depleted first, the A liquid member pumped via the A liquid-dedicated multi-tube guide member (141) and the A liquid pumping hose member (131) is blocked by the backflow blocking check valve member b (142b) from the corresponding grouting hose (110) through the B liquid pumping hose member (132) and the B liquid-dedicated multi-tube guide member (142) to the B liquid pumping area member (122).

[0109] Meanwhile, the grout tank member (170) may be equipped with a tank member (171) for liquid A and a tank member (172) for liquid B.

[0110] Referring to FIGS. 3 to FIGS. 6, the A-liquid dedicated tank member (171) is connected to the A-liquid pumping area member (121) and can hold the A-liquid member to be delivered to the A-liquid pumping area member (121) inside its body.

[0111] Referring to FIGS. 3 to FIGS. 6, the B-liquid dedicated tank member (172) is connected to the B-liquid pumping area member (122) and can contain the B-liquid member to be delivered to the B-liquid pumping area member (122) inside its body.

[0112] On the other hand, the grout material transfer member (180) may be equipped with an A liquid transfer hose member (181) and a B liquid transfer hose member (182).

[0113] Referring to FIGS. 3 to FIGS. 6, the liquid A transfer hose member (181) connects the liquid A dedicated tank member (171) and the liquid A pumping area member (121).

[0114] Referring to FIGS. 3 to FIGS. 6, the B liquid transfer hose member (182) connects the B liquid dedicated tank member (172) and the B liquid pumping area member (122). Explanation of the symbols

[0116] 10 : Pothole 20: Grouting pipe 110 : Grouting hose 120 : Mono-pumping absence 121 : Absence of Liquid A pumping area 122 : Absence of Liquid B pumping area 123 : Non-simultaneous pumping of heterogeneous fluids 131 : Liquid A pumping hose component 132 : B-liquid pumping hose component 141 : Multi-tube guide member for liquid A only 141a : Backflow blocking check valve component a 142 : Multi-tube guide member for liquid B only 142b : Backflow blocking check valve member b 151 : A liquid pressure sensing element 152 : B liquid pressure sensing element 170 : Grout material tank member 171 : Tank component for liquid A only 172 : Tank component for liquid B only 180 : Grout material transfer member 181 : Liquid A transfer hose component 182 : Liquid B transfer hose component

Claims

Claim 1 A method for repairing potholes in a paved road, comprising: a hole forming step of forming a plurality of insert holes in an area containing a pothole formed at a predetermined location in the paved road; a pipe insertion step of individually inserting a grouting pipe, having a plurality of discharge holes formed at predetermined intervals along the longitudinal direction of its body, into the plurality of insert holes; a hose mounting step of individually mounting a grouting hose on the tip of each grouting pipe; a grouting injection step of injecting grout material through the grouting hose at a predetermined pressure so that the grout material can be discharged through the plurality of discharge holes; and a road paving step of applying a road repair paving material to the area containing the pothole in response to the hardening of the injected grout material. Claim 2 A method for repairing potholes in a paved road, comprising: a road paving step of applying a road repair paving material to an area containing a pothole formed at a predetermined location in the paved road; a hole forming step of forming a plurality of insert holes in the area containing the pothole; a pipe insertion step of individually inserting a grouting pipe, having a plurality of discharge holes formed at predetermined intervals along the longitudinal direction of its body, into the plurality of insert holes; a hose mounting step of individually mounting a grouting hose on the tip of each grouting pipe; and a grouting injection step of injecting grout material through the grouting hose at a predetermined pressure so that the grout material can be discharged through the plurality of discharge holes. Claim 3 A method for repairing potholes in a paved road according to claim 1 or claim 2, wherein a predetermined pressure for injecting grout material through the grouting hose during the grouting injection step is formed to gradually weaken. Claim 4 A method for repairing potholes in a paved road according to claim 3, characterized in that, in the pipe insertion step, the grouting pipe is inserted to the roadbed of the paved road corresponding to the predetermined position. Claim 5 A method for repairing potholes in a paved road according to claim 4, wherein, in the pipe insertion step, the spacing between the grouting pipe and the grouting pipe adjacent thereto is formed within the range of 150 mm to 250 mm, and in the grouting injection step, the injection pressure of the grout material through the grouting hose is set within the range of 5 kgf / cm2 to 6 kgf / cm2.

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