Road repairing device and road repairing method

Abstract

The invention belongs to the technical field of road and bridge construction, and discloses a road repairing device and a road repairing method. The road repairing device comprises a bearing assembly and a grouting pipe, the bearing assembly is used for being buried in a foundation pit, the bearing assembly is provided with a pressure bearing face, the pressure bearing face is used for bearing vehicles, the bearing assembly is further provided with a first burial depth face and a second burial depth face which are oppositely arranged, and the first burial depth face and the second burial depth face are used for abutting against the side wall face of the foundation pit and extend into the foundation pit in the direction deep into the foundation pit. The distance between the first burial depth surface and the second burial depth surface is gradually reduced; the bearing assembly is provided with a filling cavity, and the grouting pipe can convey filling grout to the filling cavity and the bottom of the foundation pit. The road repairing device is simple in structure and convenient to use, temporary passing of vehicles can be achieved, meanwhile, when permanent structure construction is conducted in the later period, on-site construction can be conducted through the bearing assembly during emergency passing, a reinforcing structure does not need to be additionally arranged, and therefore the emergency structure and the permanent structure are combined, and the construction efficiency and the construction quality are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of road and bridge construction technology, and in particular to a road repair device and a road repair method. Background Technology

[0002] In operating high-speed tunnels, the bottom structure of the road often develops high-pressure water seepage cracks due to geological movements or aging. In order to prevent the water seepage cracks from expanding further and causing safety hazards to the road, it is necessary to excavate and deeply repair the road sections with water seepage cracks.

[0003] Currently, when repairing water seepage cracks under the road surface, temporary steel plates are usually laid on the road surface in the area of ​​the water seepage cracks to allow traffic to pass through. Permanent structural reinforcement is then carried out during the "window period". However, the above-mentioned traditional road repair method requires the demolition of the previous emergency structure and the re-embedding of the support or reinforcement structure when carrying out permanent structural reinforcement during the "window period". This is time-consuming and labor-intensive, and cannot combine emergency and permanent facilities, which has a significant impact on busy road traffic.

[0004] Therefore, there is an urgent need to design a road repair method to solve the above-mentioned problems in the existing technology. Summary of the Invention

[0005] The purpose of this invention is to provide a road repair device and a road repair method, which has a simple structure and is easy to construct. It combines emergency and permanent structures, which can greatly improve construction efficiency and construction quality.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Road repair equipment, including:

[0008] A load-bearing component is used to be buried in a foundation pit. The load-bearing component has a pressure-bearing surface for bearing vehicles. The load-bearing component also has a first burial surface and a second burial surface arranged opposite to each other. The first burial surface and the second burial surface are used to abut against the side wall of the foundation pit. Along the direction of penetration into the foundation pit, the distance between the first burial surface and the second burial surface gradually decreases.

[0009] The grouting pipe, the bearing assembly having a filling cavity, is capable of delivering filling grout to the filling cavity and the bottom of the pit.

[0010] Preferably, both the first burial surface and the second burial surface are inclined surfaces, and when the bearing component moves in the direction of penetrating the foundation pit, both the first burial surface and the second burial surface can apply downward pressure to the side wall of the foundation pit.

[0011] Preferably, the grouting pipe has a side inlet and a bottom inlet, and the bearing assembly has an insertion hole for inserting the grouting pipe.

[0012] When the grouting pipe is inserted into the grouting hole, the side grouting port is located in the filling cavity, and the bottom grouting port extends out of the bottom of the bearing assembly.

[0013] Preferably, the road repair device further includes a drainage plate disposed between the bearing component and the bottom surface of the pit;

[0014] The drain plate has a liquid collection tank, and a drain outlet is provided on the bottom surface of the tank at the corner. The bottom inlet is positioned directly opposite the liquid collection tank.

[0015] Preferably, the support component is further provided with an observation hole, which is connected to the filling cavity.

[0016] Preferably, the road repair device includes a temporary access board, one end of which is placed on the road surface on one side of the pit, and the other end of which is placed on the road surface on the other side of the pit, and the temporary access board is pressed against the load-bearing component.

[0017] Preferably, the bearing component includes a pressure plate and a support member, the support member abutting against the bottom surface of the foundation pit, the first burial surface and the second burial surface being disposed on the support member, the pressure plate being disposed above the support member, and the pressure-bearing surface being disposed on the pressure plate.

[0018] Preferably, a viscoelastic structure is filled between the first burial surface and the foundation pit, and between the second burial surface and the foundation pit.

[0019] The road repair method, using the aforementioned road repair device, includes the following steps:

[0020] S1. Excavate the foundation pit in the road section to be repaired, place the bearing component in the foundation pit, and adjust the position of the bearing component so that the first burial surface and the second burial surface respectively abut against the side wall of the foundation pit;

[0021] S2. Place the temporary passage slab on the bearing surface and place both ends of the temporary passage slab on the road surface on both sides of the pit.

[0022] S3. When the traffic flow decreases, remove the temporary passage board;

[0023] S4. Use the grouting pipe to deliver the filling grout to the bottom of the filling cavity and the foundation pit;

[0024] S5. After the filling slurry has cured, the road is opened.

[0025] Preferably, step S1, before placing the bearing component into the foundation pit, further includes:

[0026] A viscoelastic structure is coated on the sidewalls of the pit.

[0027] The beneficial effects of this invention are as follows:

[0028] The road repair device provided by this invention includes a load-bearing component and a grouting pipe. The load-bearing component is disposed in the foundation pit and can support vehicles through its bearing surface. Therefore, the load-bearing component allows vehicles to temporarily pass through during road repair to ensure smooth traffic during emergencies. Since the load-bearing component has a first burial surface and a second burial surface, and the distance between the first and second burial surfaces gradually decreases along the direction of penetration into the foundation pit, the load-bearing component forms a single-sided or double-sided wedge-shaped structure. When the bearing surface is subjected to a vertical load transmitted by a vehicle passing overhead, the load-bearing component can apply a downward-sloping pressure to the sidewall of the foundation pit, thereby converting the vertical pressure of the vehicle into a partial horizontal pressure to compress the sidewall of the foundation pit. The device reinforces the soil in the foundation pit of the road section to be repaired, and allows the load-bearing components to be firmly wedged into the pit, ensuring the reliability and durability of subsequent repair work. The load-bearing components have a filling cavity, and since the grouting pipe can inject filling grout into the filling cavity and the bottom of the foundation pit, the road repair device can grout the foundation pit of the road section to be repaired to achieve overall consolidation, thereby sealing the seepage cracks. The road repair device has a simple structure and is easy to use. It can enable temporary vehicle passage, and when carrying out permanent structural construction later, the load-bearing components used for emergency passage can be used for on-site construction without the need for additional reinforcement structures. This combines emergency and permanent structures, greatly improving construction efficiency and quality.

[0029] The road repair method provided by this invention, by setting a load-bearing component in the foundation pit and using a grouting pipe to inject grout into the filling cavity and the bottom of the foundation pit, can meet the needs of emergency vehicle passage and facilitate the construction of subsequent permanent repairs, realizing the integration of emergency and permanent structures, and greatly improving construction efficiency and quality. Attached Figure Description

[0030] Figure 1 This is a cross-sectional view of the emergency passage road repair device provided in a specific embodiment of the present invention;

[0031] Figure 2 This is a structural schematic diagram of the bearing component and drain plate provided in a specific embodiment of the present invention;

[0032] Figure 3This is a schematic diagram of the grouting pipe provided in a specific embodiment of the present invention;

[0033] Figure 4 This is a cross-sectional view of the permanent road repair device provided in a specific embodiment of the present invention.

[0034] In the picture:

[0035] 1-Bearing component; 11-Pressure plate; 111-Injection hole; 112-Observation hole; 12-Support member; 121-First burial depth surface; 122-Second burial depth surface; 13-Filling cavity;

[0036] 2-Grouting pipe; 21-Side grouting port; 22-Bottom grouting port;

[0037] 3-Temporary access board;

[0038] 4-Viscoelastic structure;

[0039] 5-drain plate; 51-drain port. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0041] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0044] like Figures 1 to 4 As shown, the present invention provides a road repair device, which includes a bearing component 1 and a grouting pipe 2. The bearing component 1 is used to be buried in the foundation pit. The bearing component 1 has a pressure-bearing surface for bearing vehicles. The bearing component 1 also has a first burial surface 121 and a second burial surface 122 arranged opposite to each other. The first burial surface 121 and the second burial surface 122 are used to abut against the side wall of the foundation pit. Along the direction of penetration into the foundation pit, the distance between the first burial surface 121 and the second burial surface 122 gradually decreases. The bearing component 1 has a filling cavity 13, and the grouting pipe 2 can deliver filling grout to the filling cavity 13 and the bottom of the foundation pit. Specifically, the load-bearing component 1 allows vehicles to temporarily pass through during road repairs to ensure smooth traffic flow during emergencies. Because the load-bearing component 1 has a first buried surface 121 and a second buried surface 122, and the distance between the first buried surface 121 and the second buried surface 122 gradually decreases along the direction of penetration into the pit, the load-bearing component 1 forms a single-sided or double-sided wedge-shaped structure. When the bearing surface is subjected to a vertical load transmitted from a vehicle passing overhead, the load-bearing component 1 can apply downward-sloping pressure to the sidewall of the pit, thereby converting the vertical pressure from the vehicle into partial horizontal pressure to compress the sidewall of the pit, thus reinforcing the soil in the pit of the road section to be repaired. This design allows the bearing component 1 to be firmly wedged into the pit, ensuring the reliability and durability of subsequent repair work. The bearing component 1 has a filling cavity 13. Since the grouting pipe 2 can inject filling grout into the filling cavity and the bottom of the pit, this road repair device can grout the pit of the section to be repaired to achieve overall consolidation, thereby sealing the seepage cracks. This road repair device has a simple structure and is easy to use. It allows for temporary vehicle passage, and during subsequent permanent structure construction, the bearing component used for emergency passage can be used for on-site construction without the need for additional reinforcement structures. This combines emergency and permanent construction, greatly improving construction efficiency and quality. It is understood that the direction of penetration into the pit is vertically downwards.

[0045] In this embodiment, the repair of roads with water seepage cracks is divided into an emergency passage period and a permanent repair period. Before the repair, the construction workers need to excavate a foundation pit matching the shape of the bearing component 1 in the road section to be repaired; then the construction workers place the bearing component 1 into the foundation pit, with the bearing surface of the bearing component 1 flush with the road surface on both sides to ensure normal vehicle passage. This stage is the emergency passage period. When the traffic flow is significantly reduced (e.g., at night), the construction workers use grouting equipment and inject filling grout into the filling cavity 13 and the bottom of the foundation pit through the grouting pipe 2 until the filling cavity 13 and the entire foundation pit are filled and compacted. Then, they wait for the filling grout to solidify. This stage is the permanent repair period.

[0046] The filling grout is used to consolidate the foundation pit and the load-bearing component 1. It can be an ultrafine cement-based grout commonly used in the art, a modified epoxy grout commonly used in the art, or other grout materials that can consolidate the foundation pit and the load-bearing component 1 to reinforce the road. No limitation is made here.

[0047] In this embodiment, as Figure 1 As shown, the first buried surface 121 and the second buried surface 122 of the bearing component 1 are both inclined surfaces. When the bearing component 1 moves in the direction of penetrating the pit, the first buried surface 121 and the second buried surface 122 can both apply downward pressure to the side wall of the pit. Therefore, both sides of the bearing component 1 can decompose the vertical pressure of the vehicle above into horizontal pressure, thereby further improving the wedging strength between the bearing component 1 and the pit. In this embodiment, the cross-section of the bearing component 1 is an inverted trapezoid, and the first buried surface 121 and the second buried surface 122 are symmetrically arranged. When the bearing surface is subjected to downward pressure, the two buried surfaces can decompose the pressure and generate horizontal outward lateral pressure to wed the side wall of the pit.

[0048] In another embodiment, the first burial surface 121 is a vertical plane, and the second burial surface 122 is an inclined plane. Along the direction of penetration into the foundation pit, the second burial surface 122 gradually approaches the first burial surface.

[0049] Furthermore, the bearing component 1 is a truncated pyramid structure. In addition to the first buried depth surface 121 and the second buried depth surface 122, it also has a third buried depth surface and a fourth buried depth surface that are arranged opposite to each other. The third buried depth surface and the fourth buried depth surface are also inclined surfaces and are arranged symmetrically. Along the direction of penetration into the foundation pit, the distance between the third buried depth surface and the fourth buried depth surface gradually decreases.

[0050] Furthermore, such as Figure 1 and Figure 2As shown, the load-bearing component 1 includes a pressure plate 11 and a support member 12. The support member 12 abuts against the bottom surface of the pit, and the pressure plate 11 is disposed above the support member 12, with a pressure-bearing surface disposed on the pressure plate 11. Specifically, the first burial surface 121, the second burial surface 122, the third burial surface, and the fourth burial surface are all disposed on the support member 12, and the pressure plate 11 is disposed above the support member 12. The pressure plate 11 and the support member 12 enclose a filling cavity 13. When a vehicle passes through, the pressure plate 11 can transfer the vehicle load to the support member 12. The load-bearing component 1 can be an integral structure, i.e., the pressure plate 11 is welded to the support member 12, or the pressure plate 11 and the support member 12 are integrally stamped; the load-bearing component 1 can also be a split structure, i.e., the pressure plate 11 is movably mounted on the support member 12.

[0051] The specific placement and grouting method of the grouting pipe 2 can be set according to the actual situation, as long as it can simultaneously deliver filling grout to the filling cavity 13 and the bottom of the foundation pit. In this embodiment, as shown... Figure 2 and Figure 3 As shown, the grouting pipe 2 has a side inlet 21 and a bottom inlet 22. The supporting assembly 1 has an insertion hole 111 for inserting the grouting pipe 2. When the grouting pipe 2 is inserted into the insertion hole 111, the side inlet 21 is located in the filling cavity 13, and the bottom inlet 22 extends out of the bottom of the supporting assembly 1. Specifically, the insertion hole 111 is located on the pressure plate 11 at the top of the supporting assembly 1. Correspondingly, a through hole is provided on the bottom surface of the support member 12. The grouting pipe 2 is a cylindrical hollow pipe. Multiple side inlets 21 are evenly spaced on the side wall of the grouting pipe 2, and the bottom inlet 22 is the end opening of the grouting pipe 2. In permanent repair... When injecting grout into the foundation pit during the restoration process, the construction personnel first insert the grouting pipe 2 into the injection hole 111 and extend the end of the grouting pipe 2 through the through hole on the bottom surface of the support member 12. At this time, the side injection port 21 of the grouting pipe 2 is located in the filling cavity 13. Therefore, when the construction personnel start the grouting equipment, some of the grout will flow into the filling cavity 13 through the side injection port 21, and some of the grout will flow to the base crack at the bottom of the foundation pit through the bottom injection port 22 until it is filled and compacted. After the grout has solidified, the entire structure in the foundation pit forms a solid permanent high-strength load-bearing structure that is integrated with the base.

[0052] To further improve the uniformity of the grout pouring at the bottom of the foundation pit, thereby increasing the consolidation strength between the load-bearing structure and the foundation pit, such as... Figure 2 As shown, the road repair device also includes a drainage plate 5 ( Figure 1 and Figure 4(Not shown in the image) The drain plate 5 is disposed between the bearing component 1 and the bottom surface of the foundation pit; the drain plate 5 has a liquid collection trough, and the bottom surface of the trough at the corners of the trough is provided with a drain port 51, and the bottom injection port 22 is set directly opposite the liquid collection trough. In this embodiment, the drain plate 5 is a cuboid plate structure, the drain plate 5 is placed under the support member 12, the surface of the drain plate 5 facing the support member 12 has a rectangular liquid collection trough, and the four corners of the liquid collection trough are provided with drain ports 51. The bottom surface of the liquid collection trough has a slope towards the four drain ports 51. The bottom injection port 22 of the grouting pipe 2 extends out of the through hole on the bottom surface of the support member 12 and is directly opposite the liquid collection trough; when grouting begins, the filling grout will enter the liquid collection trough, then flow to the four drain ports 51 at the corners, and flow out through the drain ports 51, thereby uniformly grouting the bottom of the foundation pit. Specifically, the collection tank is also equipped with a tortuous convex plate, which divides the space of the collection tank into a labyrinth flow channel to guide the filling slurry to flow evenly to the drain port 51.

[0053] Furthermore, a one-way pressure relief valve is installed in the drain outlet 51 for passive pressure relief. During the emergency passage period of road repair, water may accumulate in the foundation pit. When the water pressure at the bottom of the foundation pit is too high, the one-way pressure relief valve will open under the action of water pressure to relieve pressure. During the permanent repair period of road repair, the one-way pressure relief valve will open under the pressure of the filling grout, allowing the filling grout to flow out smoothly through the drain outlet 51. The one-way pressure relief valve only allows fluid to flow in one direction to prevent seepage water in the base soil layer from flowing back into the collection tank or even the filling cavity above, thus ensuring the smooth progress of the grouting operation. After the filling cavity 13 and the bottom of the foundation pit are filled and compacted, the one-way pressure relief valve will also be sealed and solidified with the bearing component 1 and the drain plate 5 to form an integrated structure.

[0054] In order to monitor the grouting operation in real time, such as Figure 2 As shown, the bearing component 1 is also provided with an observation hole 112, which is connected to the filling cavity 13. In this embodiment, both the observation hole 112 and the injection hole 111 are provided on the bearing plate 11, and multiple observation holes 112 and injection holes 111 can be provided according to the actual situation. During the grouting during the permanent repair period, the observation hole 112 is used to vent air to ensure that the grouting operation can proceed smoothly. At the same time, the construction personnel can observe the pouring of the filling grout in the filling cavity 13 through the observation hole 112. When the filling grout continues to emerge from the observation hole 112, it proves that the filling cavity 13 and the bottom of the foundation pit have been filled and compacted, so the grouting can be stopped. Afterwards, the construction personnel pull out the grouting pipe 2 and use high-strength bolts to seal the observation hole 112 and the injection hole 111.

[0055] To ensure the passage of vehicles on the road, such as Figure 1As shown, the road repair device includes a temporary access slab 3. One end of the temporary access slab 3 is placed on the road surface on one side of the pit, and the other end is placed on the road surface on the other side of the pit. The temporary access slab 3 is pressed against the bearing component 1. In this embodiment, the temporary access slab 3 is made of thin steel plate. The temporary access slab 3 covers the bearing surface of the bearing component 1, and its two ends overlap the road surfaces on both sides. This can cover the grooves or potholes at the joint between the bearing surface and the road surface, ensuring a smooth transition with the road surface, thereby improving the vehicle's passability.

[0056] like Figure 1 and Figure 4 As shown, viscoelastic structures 4 are filled between the first burial surface 121 and the pit, and between the second burial surface 122 and the pit. The viscoelastic structures 4 ensure good connection and sealing between the support member 12 and the pit sidewall, thereby further improving the road repair quality. The material of the viscoelastic structure 4 can be selected according to actual conditions, as long as it has non-curing properties and viscoelasticity. In this embodiment, viscoelastic structures 4 are filled between all burial surfaces of the support member 12 and the pit sidewall. The viscoelastic structure 4 is mastic, a commonly used viscous building material in the art, with good waterproof, moisture-proof, adhesive, and sealing properties. Mastic can absorb the impact from the support member 12 and stably transmit it to the pit sidewall, preventing excessive vibration when vehicles pass and thus preventing the pit from collapsing. Simultaneously, the good sealing and semi-fluid properties of mastic can effectively dynamically seal the support member 12 and the pit sidewall, preventing water seepage to the ground. In another embodiment, the viscoelastic structure 4 is asphalt mortar.

[0057] This embodiment also provides a road repair method, which uses the road repair device described above and includes the following steps:

[0058] S1. Excavate a foundation pit in the section of road to be repaired, place the bearing component 1 into the foundation pit, and adjust the position of the bearing component 1 so that the first burial surface 121 and the second burial surface 122 respectively abut against the side wall of the foundation pit.

[0059] S2. Place the temporary passage slab 3 on the bearing surface and place both ends of the temporary passage slab 3 on the road surface on both sides of the pit.

[0060] S3. When traffic flow decreases, remove temporary access board 3;

[0061] S4. Use grouting pipe 2 to deliver filling grout to filling cavity 13 and the bottom of foundation pit;

[0062] S5. After the filling grout has cured, the road can be opened.

[0063] In this embodiment, by setting a bearing component 1 in the foundation pit and using a grouting pipe 2 to grout the filling cavity 13 and the bottom of the foundation pit, the needs of emergency vehicle passage can be met, and the construction of the subsequent permanent repair period can be facilitated, realizing the integration of emergency and permanent structures, which greatly improves construction efficiency and construction quality.

[0064] In this embodiment, the foundation pit needs to be excavated to the depth that exposes the seepage cracks, and the shape of the foundation pit matches the bearing component 1. Then, construction workers apply a viscoelastic structure 4 to the sidewall surface of the foundation pit that abuts against the buried depth surface of the bearing component 1. The viscoelastic structure 4 can be a non-curing adhesive material such as mastic or asphalt putty. Next, a hoisting device is used to lift the bearing component 1 into the foundation pit, and a compaction device is used to initially wed it into place, so that the first buried depth surface 121 and the second buried depth surface 122 are respectively pressed against the viscoelastic structure 4 on the sidewall surface of the foundation pit. After the bearing component 1 is in place, construction workers lay temporary traffic slabs 3 on the bearing surface to ensure a smooth road transition. This is the emergency passage period for road repair. When traffic volume decreases significantly (e.g., at night). As the road repair enters the permanent repair phase, the construction workers first remove the temporary access board 3, then open the injection hole 111 and observation hole 112 on the surface of the bearing component 1, and insert the grouting pipe 2 into the injection hole 111 until the bottom injection port 22 at the bottom of the grouting pipe 2 extends out of the through hole on the bottom surface of the bearing component 1. After that, the construction workers deliver filling grout to the filling cavity 13 and the bottom of the foundation pit through the grouting pipe 2, and at the same time observe the grouting situation in the filling cavity 13 through the observation hole 112. When filling grout continuously emerges from the observation hole 112, it proves that the filling cavity 13 and the bottom of the foundation pit have been filled and compacted, and the grouting is stopped at this time. After that, the construction workers pull out the grouting pipe 2, seal the observation hole 112 and the injection hole 111, and wait for the filling grout to solidify.

[0065] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A road repair device, characterized in that, include: A bearing component (1) is used to be buried in the foundation pit. The bearing component (1) has a pressure-bearing surface for bearing vehicles. The bearing component (1) also has a first burial surface (121) and a second burial surface (122) arranged opposite to each other. The first burial surface (121) and the second burial surface (122) are used to abut against the side wall of the foundation pit. Along the direction of penetration into the foundation pit, the distance between the first burial surface (121) and the second burial surface (122) gradually decreases. Grouting pipe (2), the bearing component (1) has a filling cavity (13), the grouting pipe (2) is capable of delivering filling grout to the filling cavity (13) and the bottom of the pit.

2. The road repair device according to claim 1, characterized in that, Both the first buried surface (121) and the second buried surface (122) are inclined surfaces, and when the bearing component (1) moves in the direction of penetrating the foundation pit, both the first buried surface (121) and the second buried surface (122) can apply downward pressure to the side wall of the foundation pit.

3. The road repair device according to claim 1, characterized in that, The grouting pipe (2) has a side inlet (21) and a bottom inlet (22), and the bearing assembly (1) has an insertion hole (111) for inserting the grouting pipe (2). When the grouting pipe (2) is inserted into the grouting hole (111), the side grouting port (21) is located in the filling cavity (13), and the bottom grouting port (22) extends out of the bottom of the bearing assembly (1).

4. The road repair device according to claim 3, characterized in that, The road repair device also includes a drainage plate (5), which is disposed between the bearing component (1) and the bottom surface of the pit; The drain plate (5) has a liquid collection tank, and a drain port (51) is provided on the bottom surface of the tank at the corner. The bottom injection port (22) is set directly opposite the liquid collection tank.

5. The road repair device according to claim 3, characterized in that, The support component (1) is also provided with an observation hole (112), which is connected to the filling cavity (13).

6. The road repair device according to claim 1, characterized in that, The road repair device includes a temporary access board (3), one end of which is placed on the road surface on one side of the pit, and the other end of which is placed on the road surface on the other side of the pit. The temporary access board (3) is pressed against the bearing component (1).

7. The road repair device according to claim 1, characterized in that, The bearing component (1) includes a pressure plate (11) and a support member (12). The support member (12) abuts against the bottom surface of the foundation pit. The first burial surface (121) and the second burial surface (122) are disposed on the support member (12). The pressure plate (11) is disposed above the support member (12), and the pressure bearing surface is disposed on the pressure plate (11).

8. The road repair device according to claim 7, characterized in that, The first burial surface (121) and the foundation pit, and the second burial surface (122) and the foundation pit are both filled with viscoelastic structures (4).

9. A road repair method, characterized in that, Using the road repair apparatus as described in any one of claims 1-8 includes the following steps: S1. Excavate the foundation pit in the road section to be repaired, put the bearing component (1) into the foundation pit, and adjust the position of the bearing component (1) so that the first burial surface (121) and the second burial surface (122) respectively abut against the side wall of the foundation pit; S2. Cover the bearing surface with the temporary passage board (3) and place the two ends of the temporary passage board (3) on the road surface on both sides of the pit respectively; S3. When the traffic flow decreases, remove the temporary passage board (3); S4. Use the grouting pipe (2) to deliver the filling grout to the filling cavity (13) and the bottom of the foundation pit; S5. After the filling slurry has cured, the road is opened.

10. The road repair method according to claim 9, characterized in that, Before placing the bearing component (1) into the foundation pit in step S1, the following steps are also included: A viscoelastic structure (4) is coated on the side wall of the pit.

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