Equipment and methods for repairing cracks in renovated and expanded embankments

Abstract

This disclosure provides a device and method for repairing cracks in reconstructed and expanded embankments, applicable to the field of embankment repair technology. The device includes a pipe body comprised of multiple rotatably connected pipes for injecting repair grout into the embankment; a control mechanism rotatably connected to one end of the pipe body; a pressure monitoring mechanism configured to monitor the filling pressure of the repair grout within the pipe body; and a signal transmission mechanism detachably mounted at one end of the pipe body and configured to transmit pressure data from the pressure monitoring mechanism to the outside. Based on this pressure data, the control mechanism can control at least one of the flow rate, pressure, and flow direction of the repair grout within the pipe body. This repair device allows for effective repair of widened embankments without damaging the embankment surface, offering simple operation and high repair efficiency.

Description

Technical Field

[0001] This disclosure relates to the field of embankment repair technology, and in particular to a device and method for repairing cracks in reconstructed and expanded embankments. Background Technology

[0002] Faced with ever-increasing traffic demands, embankment reconstruction and expansion have become a common road improvement method. However, after years of use, the settlement of old roadbeds has stabilized. Newly widened roadbeds impose new loads on the old ones, causing deformation and differential settlement, leading to longitudinal cracks in the pavement. In addition to longitudinal cracks, after a road is put into use, significant tensile stress is generated at the bottom of the base layer under traffic loads, resulting in transverse cracks. If the overall pavement strength is insufficient, even network cracks may appear. Rainwater seeps into the base layer through these cracks, and under the dynamic load of water flow, the base layer is eroded, weakening the subgrade strength and causing a decline in overall road performance. Related technologies primarily use filling methods (such as hot and cold grout fillers, polymer repair, or asphalt bonding) to repair cracked pavements from top to bottom.

[0003] In the process of conceiving this disclosure, the inventors discovered the following defects in the related technologies for repairing road cracks: the traditional method of repairing cracked pavement from top to bottom is difficult to adapt to the shape and direction of the cracks, resulting in low repair efficiency and waste of filler; for concentrated cracks that appear at the junction of widened embankments (new and old roadbeds), there is a lack of targeted repair equipment and methods, which makes it difficult to meet the actual engineering needs. Summary of the Invention

[0004] In view of this, this disclosure provides a device and method for repairing cracks in reconstructed and expanded embankments.

[0005] According to a first aspect of this disclosure, an embankment crack repair device is provided, comprising: a pipe body rotatably connected from a plurality of pipe bodies for injecting repair slurry into the embankment; a control mechanism configured to be rotatably connected to one end of the pipe body; a pressure monitoring mechanism configured to monitor the filling pressure of the repair slurry in the pipe body; and a signal transmission mechanism detachably mounted at one end of the pipe body and configured to transmit pressure data from the pressure monitoring mechanism to an external source, so as to control at least one of the flow rate, pressure, and flow direction of the repair slurry inside the pipe body via the control mechanism based on the pressure data.

[0006] According to an embodiment of this disclosure, the tube portion includes: a head tube, at least one middle tube, a tail cone, and a connecting mechanism. At least one of the middle tubes is sequentially connected via the connecting structure. The first end of the head tube is rotatably connected to the control mechanism. The second end of the head tube is rotatably connected to the first end of the first middle tube among the at least one of the middle tubes via the connecting mechanism. The second end of the last middle tube among the at least one of the middle tubes is rotatably connected to the first end of the tail cone via the connecting mechanism. Multiple injection holes are arranged on the surfaces of the middle tubes and the tail cone. Preferably, each connecting mechanism includes a connecting pipe or a connecting hole connected to the connecting pipe.

[0007] According to an embodiment of this disclosure, the control mechanism includes: a flow control valve rotatably connected to a first end of the head tube to control the flow rate of the repair slurry; and a controller configured to be hollow internally, with a first end connected to a repair slurry supply device and a second end detachably connected to the flow control valve.

[0008] According to an embodiment of the present disclosure, the signal transmission mechanism is rotatably connected to the second end of each of the central tubes and includes: a connecting seat having a first auxiliary connecting hole formed thereon for engaging with the connecting tube; a mounting seat connected to the connecting seat, wherein the pressure monitoring mechanism is detachably mounted on the mounting seat and does not protrude from the connecting seat and the maximum outer diameter of the central tube; and an auxiliary connecting tube connected to the mounting seat and configured to engage with the connecting hole.

[0009] According to an embodiment of this disclosure, the aforementioned head tube includes: a first outer tube, which is configured to be hollow inside, wherein a first end of the first outer tube is rotatably connected to the aforementioned control mechanism and a second end is provided with a second auxiliary connection hole that is connected to the aforementioned connecting tube; and a first inner tube, which is configured to be inside the aforementioned first outer tube and is fixedly connected to the aforementioned first outer tube.

[0010] According to an embodiment of this disclosure, the aforementioned central tube includes: a second inner tube with a plurality of first injection holes on its surface, and the two ends of the second inner tube are respectively provided with the aforementioned connecting pipe and the aforementioned connecting hole; and a second outer tube sleeved on the outside of the second inner tube, the cavity between the second outer tube and the second inner tube providing a buffer space for the repair slurry, and the surface of the second outer tube being provided with a plurality of second injection holes for releasing and conveying the repair slurry.

[0011] According to an embodiment of this disclosure, the first end of the tail cone is rotatably connected to the connecting hole of the last middle tube, and the second end is a conical mechanism used to advance soil from the embankment shoulder for grouting repair.

[0012] According to embodiments of this disclosure, the number of the aforementioned central pipes is determined based on the length and depth values ​​of the embankment cracks.

[0013] According to embodiments of this disclosure, the repair equipment may further include a flow monitoring mechanism, which is detachably mounted on the side of the control mechanism to monitor the flow rate and amount of the repair slurry.

[0014] A second aspect of this disclosure provides a crack repair method based on the aforementioned repair equipment, comprising: acquiring crack location data and crack size data using monitoring equipment; determining the location data, size data, and repair slurry dosage of the repair equipment based on the crack location data and crack size data, wherein the repair equipment is embedded below the crack depth direction through the shoulder slope of the embankment; monitoring the transmission flow rate data and transmission pressure data of the repair slurry using a flow monitoring mechanism and a pressure monitoring mechanism in the repair equipment; and stopping the repair operation when the transmission flow rate data and the transmission pressure data each meet corresponding preset thresholds.

[0015] According to the embankment crack repair equipment and method disclosed herein, by connecting multiple pipes in the pipe section, repair equipment of different lengths can be flexibly generated to meet the different crack locations, lengths, and depths in the embankment. In particular, it can better adapt to the shape and direction of concentrated cracks at the junction of the old and new roadbeds in the embankment reconstruction and expansion. The repair equipment can be embedded into the embankment from the side (shoulder), avoiding damage to the embankment surface, and construction can be carried out without interfering with traffic. The repair equipment is simple and easy to operate, can adapt to different types of cracks, avoids waste of repair grout, and improves economy and construction efficiency. Attached Figure Description

[0016] The above and other objects, features and advantages of this disclosure will become clearer from the following description of embodiments with reference to the accompanying drawings, in which:

[0017] Figure 1 A schematic diagram of a road embankment crack repair device according to an embodiment of the present disclosure is shown.

[0018] Figure 2 A schematic diagram of a signal transmission mechanism according to an embodiment of the present disclosure is shown;

[0019] Figure 3AA schematic diagram of the head tube body according to an embodiment of the present disclosure is shown;

[0020] Figure 3B A schematic cross-sectional view illustrating the connection between the head tube and the middle tube according to an embodiment of the present disclosure is shown.

[0021] Figure 4 A schematic diagram of the middle tube body according to an embodiment of the present disclosure is shown;

[0022] Figure 5 A schematic diagram of a tail cone according to an embodiment of the present disclosure is shown;

[0023] Figure 6 The diagram illustrates the arrangement of the repair equipment according to an embodiment of the present disclosure in a widened embankment.

[0024] In the accompanying drawings, the meanings of the reference numerals are as follows:

[0025] 1. Pipe body part;

[0026] 11. Head tube body;

[0027] 111. The first outer tube body;

[0028] 112. The first inner tube body;

[0029] 12. Middle tube body;

[0030] 121. The second outer tube body;

[0031] 122. The second inner tube body;

[0032] 1211. Second injection hole

[0033] 13. Tail cone;

[0034] 14. Connecting mechanism;

[0035] 141. Connecting pipe;

[0036] 142 connection holes;

[0037] 15. Injection hole

[0038] 2. Control mechanism;

[0039] 21. Control valve;

[0040] 22 controllers;

[0041] 3. Pressure monitoring agency

[0042] 4. Signal transmission mechanism;

[0043] 41. Connector;

[0044] 42. Mounting base;

[0045] 43. Auxiliary connecting pipe;

[0046] 5. Traffic flow monitoring agencies. Detailed Implementation

[0047] The embodiments of the present disclosure will now be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the disclosure. In the following detailed description, numerous specific details are set forth to provide a thorough understanding of the embodiments of the present disclosure for ease of explanation. However, it will be apparent that one or more embodiments may be practiced without these specific details. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concepts of the present disclosure.

[0048] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0049] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0050] When using expressions such as "at least one of A, B and C", they should generally be interpreted in accordance with the meaning that is commonly understood by those skilled in the art (e.g., "a system having at least one of A, B and C" should include, but is not limited to, a system having A alone, a system having B alone, a system having C alone, a system having A and B, a system having A and C, a system having B and C, and / or a system having A, B and C, etc.).

[0051] In the process of conceiving this disclosure, the inventors discovered that in the relevant technologies, the traditional method of repairing cracked pavement from top to bottom for the repair of cracks in the new and old roadbeds of the embankment is difficult to adapt to the shape and direction of the cracks, resulting in low repair efficiency and waste of filler. For concentrated cracks that appear at the junction of the embankment (new and old roadbeds) during the widening of the embankment, there is a lack of targeted repair equipment and methods, which makes it difficult to meet the actual engineering needs.

[0052] In view of this, this disclosure allows for the flexible generation of repair equipment of different lengths by connecting multiple pipes in the pipe section, to meet the needs of different crack locations, crack lengths, and depths in the embankment. In particular, it can better adapt to the shape and direction of concentrated cracks at the junction of new and old roadbeds. The repair equipment can be embedded into the embankment from the side (shoulder), avoiding damage to the embankment surface and allowing construction to be carried out without interfering with traffic. The repair equipment is simple and easy to operate, can adapt to different types of cracks, avoids waste of repair grout, and improves economy and construction efficiency.

[0053] Embodiments of this disclosure provide a road embankment crack repair device, comprising: a pipe body, which is rotatably connected from a plurality of pipe bodies for injecting repair slurry into the road embankment; a control mechanism configured to be rotatably connected to one end of the pipe body; a pressure monitoring mechanism configured to monitor the filling pressure of the repair slurry in the pipe body; and a signal transmission mechanism detachably mounted at one end of the pipe body and configured to transmit pressure data from the pressure monitoring mechanism to the outside, so as to control at least one of the flow rate, pressure, and flow direction of the repair slurry inside the pipe body based on the pressure data through the control mechanism.

[0054] Figure 1 A schematic diagram of a road embankment crack repair device according to an embodiment of the present disclosure is shown.

[0055] like Figure 1 As shown, a road embankment (e.g., a reconstructed or expanded road embankment) crack repair device includes: a pipe body 1, which is composed of multiple pipes rotatably connected for injecting repair grout into the road embankment; a control mechanism 2, which is configured to be rotatably connected to one end of the pipe body 1; a pressure monitoring mechanism 3, which is configured to monitor the filling pressure of the repair grout in the pipe body 1; and a signal transmission mechanism 4, which is detachably installed at one end of the pipe body 1 and configured to transmit pressure data from the pressure monitoring mechanism 3 to the outside, so as to control at least one of the flow rate, pressure, and flow direction of the repair grout inside the pipe body 1 based on the pressure data through the control mechanism 2.

[0056] According to embodiments of this disclosure, the pipe body 1 can be formed by connecting a head pipe body 11, a middle pipe body 12, and a tail cone 13. The length of the pipe body 1 can be adjusted by increasing or decreasing the number of middle pipe bodies 12. After determining the length of the equipment based on the location of the embankment crack, multiple middle pipe bodies 12 can be used to connect the head pipe body 11 and the tail cone 13 to achieve the target length, realizing flexible assembly of the pipe body according to the measurement point location. The control mechanism 2 can include a flow control valve 21 and a controller 22, which can be rotatably connected to one end of the head pipe body 11 through a connecting mechanism 14. It can be used to control the flow and pressure of the repair slurry. The rotatable connection methods include, but are not limited to, threaded connection, sleeve connection, sliding bearing connection, and gear connection. The pressure monitoring mechanism 3 can be rotatably connected to one end of the middle pipe body 12. The number of pressure monitoring mechanisms 3 can correspond to the number of middle pipe bodies 12, or can be determined according to actual needs. For example, two adjacent middle pipe bodies 12 can be directly connected through the connecting mechanism 14 without setting up a pressure monitoring mechanism. The signal transmission mechanism 4 may include a connecting seat 41, a mounting seat 42, and an auxiliary connecting pipe 43, which can be used to transmit the pressure data monitored by the pressure monitoring mechanism 3 to an external system (e.g., a control mechanism 2), so that the flow rate, pressure, and flow direction of the repair slurry inside the pipe body 1 can be controlled by the control mechanism 2.

[0057] In one feasible embodiment, the flow control valve 21 in the control mechanism 2 can be used to control the inflow and outflow of slurry and prevent slurry backflow. When the pressure data monitored by the pressure monitoring mechanism indicates that the pressure of the filling slurry is too high or too much, the slurry can be reduced by drawing out the slurry through the control pipe 1.

[0058] In one feasible embodiment, the material of the pipe body 1 can be determined according to the actual situation. For example, under normal soil conditions, a high-strength steel pipe body (such as cobalt-tungsten alloy) can be used. If the soil conditions are high temperature or cold, different materials (such as tungsten carbide, stainless steel or heat-resistant alloy steel) can be used to meet the engineering requirements.

[0059] According to embodiments of this disclosure, by connecting multiple pipes in the pipe section, repair devices of different lengths can be flexibly generated to meet the needs of different crack locations, crack lengths, and depths in the embankment. In particular, for concentrated cracks at the junction of new and old roadbeds, it can better adapt to the shape and direction of concentrated cracks. The repair device can be embedded into the embankment from the side (shoulder), avoiding damage to the embankment surface, and construction can be carried out without interfering with traffic. The repair device is simple and easy to operate, can adapt to different types of cracks, avoids waste of repair grout, and improves economy and construction efficiency.

[0060] According to an embodiment of this disclosure, the tube body 1 includes: a head tube 11, at least one middle tube 12, a tail cone 13, and a connecting mechanism 14. The at least one middle tube is sequentially connected via a connecting structure. The first end of the head tube 11 is rotatably connected to a control mechanism. The second end of the head tube is rotatably connected to the first end of the first middle tube of the at least one middle tube 12 via the connecting mechanism 14. The second end of the last middle tube of the at least one middle tube 12 is rotatably connected to the first end of the tail cone 13 via the connecting mechanism 14. Multiple injection holes 15 are arranged on the surfaces of the middle tubes 12 and the tail cone 13. Preferably, each connecting mechanism 14 includes a hollow connecting tube 141 or a connecting hole 142 connected to a connecting tube. For example, as... Figure 1 As shown, a threaded connecting pipe 141 is installed at the upper end of the middle tube 12 as a connecting mechanism for connecting to the head tube or the previous stage middle tube, while a threaded connecting hole 142 is provided at the lower end of the middle tube 12 as a connecting mechanism for connecting to the next stage middle tube, the pressure monitoring mechanism, or the tail cone. Similarly, a threaded connecting pipe 141 is installed at the upper end of the pressure monitoring mechanism as a connecting mechanism for connecting to the previous stage middle tube, while a threaded connecting hole 142 is provided at the lower end of the pressure monitoring mechanism as a connecting mechanism for connecting to the next stage middle tube or the tail cone.

[0061] According to the embodiments of this disclosure, the head tube 11 and the middle tube 12 are both hollow inside. The head tube 11, the middle tube 12 and the tail cone 13 can be rotatably connected to form the entire tube part 1 by the connecting mechanism 14.

[0062] According to the embodiments of this disclosure, considering that the pipe body is subjected to repeated impacts from the internal and external repair grout during the grouting process, it is prone to wear or even damage, and cannot withstand internal and external pressure and impact forces well, leading to structural safety issues of the overall repair equipment; during grouting repair operations, the uniformity of grout flow is difficult to guarantee with a single-layer pipe body. This disclosure constructs both the head pipe body 11 and the middle pipe body 12 as inner and outer two-layer pipe bodies. Through the injection holes 15 of the two-layer pipe bodies, the grout can penetrate into the target area (inside the crack) more evenly.

[0063] According to the embodiments of this disclosure, by constructing the head tube 11 and the middle tube 12 as a double-layer tube, the strength and stability of the tube body 1 are increased, enabling it to better withstand internal and external pressure and impact. The buffer area between the two tube layers can absorb and disperse external pressure, further protecting the internal structure and improving the overall structural safety. At the same time, the design of the middle buffer area can reduce the wear and impact on the tube body 1 during use, thereby extending its service life, making it more durable, and reducing the frequency of maintenance and replacement of the repair equipment.

[0064] According to an embodiment of this disclosure, the control mechanism 2 includes: a flow control valve 21 rotatably connected to a first end of the head tube 11 to control the flow rate of the repair slurry; and a controller 22 configured to be hollow inside, with a first end connected to the repair slurry supply equipment via a pipe and a second end detachably connected to the flow control valve 21.

[0065] According to an embodiment of this disclosure, during the repair construction process, the first end of the flow control valve 21 can be detachably connected to the controller 22, and the second end can be rotatably connected to the head pipe 11 or the middle pipe 12 through the connecting pipe 141. The first end of the controller 22 can be connected to the repair slurry supply equipment (e.g., power pump, grouting pump).

[0066] According to an embodiment of the present disclosure, the signal transmission mechanism 4 is rotatably connected to the second end of each central tube 12 and includes: a connecting seat 41 having a first auxiliary connecting hole formed thereon for engaging with a connecting pipe; a mounting seat 42 connected to the connecting seat, the pressure monitoring mechanism 3 being detachably mounted on the mounting seat 41 and not protruding from the connecting seat 41 and the maximum outer diameter of the central tube 12; and an auxiliary connecting pipe 43 connected to the mounting seat 42 and configured to engage with the connecting hole 142.

[0067] Figure 2 A schematic diagram of a signal transmission mechanism according to an embodiment of the present disclosure is shown.

[0068] like Figure 2 As shown, the signal transmission mechanism 4 is rotatably connected to the second end of the central tube 12 via a connecting pipe 141 (e.g., a threaded pipe). The signal transmission mechanism 4 may include a connecting seat 41, a mounting seat 42, and an auxiliary connecting pipe 43. It is understood that, to reduce wear on the tube, the pressure monitoring mechanism 3 mounted on the mounting seat 42 does not protrude beyond the maximum outer diameter of the connecting seat 42 and the central tube 12. The number of signal transmission mechanisms 4 can be the same as the number of central tubes 12. It should be noted that the number of signal transmission mechanisms 4 can also be determined according to actual needs; that is, the number of signal transmission mechanisms 4 may not be the same as the number of central tubes 12, and this is not specifically limited here.

[0069] According to the embodiments of this disclosure, during construction, the pressure monitoring mechanism 3 can monitor the filling pressure. When the filling pressure gradually increases to the set critical pressure, the signal transmission mechanism 4 can transmit the pressure data monitored by the pressure monitoring mechanism 3 to the control mechanism 2, and control the repair slurry supply equipment (e.g., power pump) to stop delivering the slurry through the control device (1). If the pressure data exceeds the preset pressure threshold, the slurry can be discharged through the flow control valve 21 by operating the control mechanism 2.

[0070] According to embodiments of this disclosure, by comprehensively controlling the slurry flow rate, pressure, and slurry flow direction in the middle of the repair equipment through a control mechanism, a signal transmission mechanism, and a pressure monitoring mechanism, it is possible to prevent damage to the repair equipment or other abnormal situations from occurring when the pressure exceeds the threshold, thereby reducing slurry waste and ensuring construction safety.

[0071] According to an embodiment of the present disclosure, the head tube 11 includes: a first outer tube 111, which is configured to be hollow inside, with a first end of the first outer tube 111 rotatably connected to the control mechanism 2 and a second end provided with a second auxiliary connection hole for connection with a connecting tube; and a first inner tube 112, which is configured to be inside the first outer tube 111 and fixedly connected to the first outer tube 111.

[0072] Figure 3A A schematic diagram of the head tube body according to an embodiment of the present disclosure is shown.

[0073] Figure 3B A schematic cross-sectional view illustrating the connection between the head tube and the middle tube according to an embodiment of the present disclosure is shown.

[0074] like Figure 3A As shown, the head tube 11 may include a first outer tube 111 and a first inner tube 112. The first end of the head tube 11 is rotatably connected to the flow control valve 21 via a connecting mechanism 14, such as... Figure 3B As shown, the second end of the head tube 11 is rotatably connected to the middle tube 12 via a connecting mechanism 14. The head tube 11 has a hollow structure, and the first inner tube 112 and the first outer tube 111 form a double-layer tube, which are fixedly connected.

[0075] In one feasible embodiment, the first inner tube 112 and the first outer tube 111 can also be connected by threaded connection, sleeve connection and gear connection to meet the connection requirements between the inner and outer tubes, and the specific form is not limited.

[0076] According to an embodiment of this disclosure, the central tube 12 includes: a second inner tube 122, the surface of which is provided with a plurality of first injection holes 1221, and the two ends of the second inner tube 122 are respectively provided with connecting pipes 141 and connecting holes 142; and a second outer tube 121, which is sleeved on the outside of the second inner tube 122, the cavity between the second outer tube 121 and the second inner tube 122 provides a buffer space for the repair slurry, and the surface of the second outer tube is provided with a plurality of second injection holes 1211 for releasing and conveying the repair slurry.

[0077] Figure 4 A schematic diagram of the central tube body according to an embodiment of the present disclosure is shown.

[0078] like Figure 4 As shown, the middle tube 12 may include a second inner tube 122 and a second outer tube 121. The second outer tube 121 is fitted over the second inner tube 122, forming a double-layer tube. The first end of the second outer tube 121 can be rotatably connected to the head tube 11 via a connecting tube 141, and the second end can be rotatably connected to another middle tube 12 or a tail cone via a connecting hole 142. Both tubes are provided with multiple injection holes. The number of injection holes can be determined according to actual needs and is not limited here. The connection between the second inner tube 122 and the second outer tube 121 is the same as the connection between the first inner tube 112 and the first outer tube 111, and will not be described in detail here.

[0079] According to an embodiment of this disclosure, the first end of the tail cone 13 is rotatably connected to the connecting hole of the last middle tube body, for example, through a connecting pipe, and the second end is a conical mechanism for advancing soil from the embankment shoulder for grouting repair.

[0080] According to embodiments of this disclosure, the connecting pipe and the auxiliary connecting pipe have the same structure and size, and can both mate with the connecting hole, the first auxiliary connecting hole, and the second auxiliary connecting hole.

[0081] Figure 5 A schematic diagram of a tail cone according to an embodiment of the present disclosure is shown.

[0082] like Figure 5 As shown, the tail cone 13 has a cone-shaped closed structure for preventing damage, which can be used to advance the soil, prevent damage to the repair equipment, and ensure smooth access to the construction position.

[0083] According to embodiments of this disclosure, the number of central tubes 12 is determined based on the length and depth values ​​of the embankment cracks.

[0084] According to embodiments of this disclosure, different specifications (sizes), materials and performance of the central pipe 12 can be selected for replacement according to different repair needs and geological conditions. At the same time, multiple central pipes can be connected to flexibly meet the needs of different projects.

[0085] According to embodiments of this disclosure, the repair equipment may further include a flow monitoring mechanism 5, as shown in FIG3, wherein the flow monitoring mechanism 5 is detachably mounted on the side of the control mechanism 2 to monitor the flow rate and amount of repair slurry.

[0086] According to embodiments of this disclosure, a method for repairing cracks using a repair device includes operations S610 to S640.

[0087] When operating the S610, monitoring equipment is used to obtain data on the location and size of cracks.

[0088] In operation S620, based on the crack location data and crack size data, the location data, size data and amount of repair grout are determined. The repair equipment is embedded below the crack depth direction through the shoulder slope of the embankment.

[0089] Figure 6 The diagram illustrates the arrangement of the repair equipment according to an embodiment of the present disclosure in a widened embankment.

[0090] like Figure 6 As shown, after measuring the length, width, and depth of the cracks 603 in the original embankment 601 and the newly built embankment 602 during the embankment widening process, the location and depth data of the repair equipment 604 embedded in the embankment can be determined. The required amount of grout can be estimated based on historical data measured by the flow sensor and engineering experience. Measuring instruments include, but are not limited to, ultrasonic detectors, 3D scanners, laser rangefinders, and crack width gauges.

[0091] In one feasible embodiment, for larger cracks, especially when the bottom of the crack is loose or damaged, the crack repair should preferably begin at the bottom of the crack. The bottom of the crack is where the maximum stress and tension are experienced, and it is also the origin of the crack. Starting the repair from the bottom can effectively prevent the crack from expanding further, ensuring a more durable and stable repair. If the crack is "V"-shaped or "U"-shaped, the repair can also begin from the middle of the crack, ensuring that there is sufficient repair material on both sides for better repair results.

[0092] When operating the S630, the flow monitoring mechanism and pressure monitoring mechanism in the repair equipment are used to monitor the transmission flow rate and transmission pressure data of the repair slurry.

[0093] When operating S640, if the transmission traffic data and transmission pressure data each meet their respective preset thresholds, the repair operation will stop.

[0094] In another feasible embodiment, the crack repair method using the repair device may include operations S710 to S770.

[0095] When operating the S710, confirm the location of the crack in the embankment to be widened, and use measuring tools (such as rulers, measuring instruments, etc.) to accurately measure the size of the crack, including its length, width and depth, to determine the location and depth of the injection of repair grout. After determining the distance points, assemble the pipe body, connect the head pipe body, multiple middle pipe bodies and tail pipe bodies to assemble them into the target length, and conduct tests on the connection tightness, grout delivery and sensor equipment.

[0096] When operating the S720, set up the construction platform, select the area below the center of the crack as the starting point for crack repair, and place holes every 30cm near the crack. If the embankment has a large degree of differential settlement and the crack is more obvious, the spacing needs to be adjusted to 2.0m. Mark the area that needs to be repaired and reinforced to ensure that the entire crack is fully filled. Clean the holes in the construction area and number them in detail.

[0097] According to embodiments of this disclosure, the placement of repair holes depends on the size and depth of the crack, the properties of the grouting material, and the project's economic and construction requirements. For repair holes spaced 20–50 cm apart: this is suitable for narrower cracks or situations requiring particularly fine filling. In this case, a denser hole spacing ensures more grouting material is filled into the crack, improving the repair effect. For repair holes spaced 1–2 m apart: this is suitable for wider cracks, or as an option when considering economy and construction efficiency. A larger hole spacing reduces the number of holes and the amount of filling material used, thereby reducing overall cost while improving construction efficiency.

[0098] When operating the S730 and drilling, the borehole diameter should be slightly larger than the diameter of the repair equipment, taking into account the actual engineering conditions. This ensures that the repair equipment can be installed smoothly without damaging it and that the hole can be excavated successfully. Records should be kept for each drilling operation to provide reference data for subsequent repair and filling work.

[0099] When operating the S740, the hole is cleaned to flush out excess soil. The connecting pipe is used to pump a large amount of clean water into the hole to flush out the mud and sediment.

[0100] When operating the S750, embed the repair equipment and place it at the crack repair point as required. Ensure that the pipe is vertical and centered in the hole. Take sealing measures around the hole, such as using sealant or gaskets, to ensure good sealing between the hole and the embankment and prevent grout from overflowing from around the hole. Connect the repair equipment to the power pump to carry out the filling repair operation.

[0101] When operating the S760 to repair cracks in the embankment, the repair grout is thoroughly mixed to improve the quality of the repair. The grout is injected in timed intervals (e.g., every hour) with multiple injections. Construction personnel constantly monitor the flow and pressure data transmitted by the flow and pressure monitoring devices during grout injection, adjusting the control results promptly to ensure smooth crack repair. Once the grout has filled the orifice, the construction is considered complete based on whether the pressure and flow monitoring data meet preset thresholds. After the repair work is finished, the equipment is removed, and the equipment pipes are dismantled, cleaned, and maintained to prevent grout residue from damaging or clogging the equipment.

[0102] Understandably, the pressure threshold is related to the repair grout, the size of the crack, and geological conditions, and needs to be determined based on the actual site conditions. The threshold is not limited to the range of 0.5 to 2 MPa.

[0103] When operating the S770, to ensure that the repair grout fully fills the cracks, and after the repair grout has fully cured, use equipment such as ultrasound and radar to check the repair effect, ensuring that the cracks have been fully filled and that the repaired surface is smooth and free of cracks.

[0104] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this disclosure can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this disclosure. In particular, the features described in the various embodiments and / or claims of this disclosure can be combined or combined in various ways without departing from the spirit and teachings of this disclosure. All such combinations and / or combinations fall within the scope of this disclosure.

[0105] The embodiments of this disclosure have been described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of this disclosure. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. The scope of this disclosure is defined by the appended claims and their equivalents. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of this disclosure, and all such substitutions and modifications should fall within the scope of this disclosure.

Claims

1. A device for repairing cracks in renovated and expanded road embankments, comprising: Pipe body (1), which is composed of multiple pipe bodies rotatably connected, is used to inject repair slurry into the embankment; Control mechanism (2), which is configured to be rotatably connected to one end of the tube body (1); The pressure monitoring mechanism (3) is configured to monitor the filling pressure of the repair grout in the pipe body (1); as well as A signal transmission mechanism (4) is detachably mounted at one end of the tube body (1) and configured to transmit the pressure data in the pressure monitoring mechanism (3) to the outside, so as to control at least one of the flow rate, pressure and flow direction of the repair slurry inside the tube body (1) through the control mechanism (2) based on the pressure data. The tube body (1) includes: The device comprises a head tube (11), at least one middle tube (12), a tail cone (13), and a connecting mechanism (14), wherein at least one of the middle tubes is connected in sequence through the connecting structure, the first end of the head tube (11) is rotatably connected to the control mechanism, the second end of the head tube is rotatably connected to the first end of the first middle tube of at least one of the middle tubes (12) through the connecting mechanism (14), and the second end of the last middle tube of at least one of the middle tubes (12) is rotatably connected to the first end of the tail cone (13) through the connecting mechanism (14). The surfaces of the middle tubes (12) and the tail cone (13) are provided with a plurality of injection holes (15). Each of the connecting mechanisms (14) includes a connecting tube (141) or a connecting hole (142) connected to the connecting tube. The head tube (11) includes: The first outer tube (111) is hollow inside. The first end of the first outer tube (111) is rotatably connected to the control mechanism (2), and the second end is provided with a second auxiliary connection hole that connects to the connecting tube. The first inner tube (112) is configured to be inside the first outer tube (111), and the first inner tube (112) is fixedly connected to the first outer tube (111).

2. The repair device according to claim 1, wherein, The control mechanism (2) includes: A flow control valve (21) is rotatably connected to the first end of the head tube (11) to control the flow rate of the repair slurry; and The controller (22) is constructed to be hollow inside. The first end of the controller (22) is connected to the repair slurry supply equipment, and the second end is detachably connected to the flow control valve (21).

3. The repair equipment according to claim 1, wherein, The signal transmission mechanism (4) is rotatably connected to the second end of each of the central tubes (12) and includes: Connecting seat (41), wherein a first auxiliary connecting hole is formed on the connecting seat to engage with the connecting pipe; Mounting base (42), connected to the connecting base, the pressure monitoring mechanism (3) is detachably mounted on the mounting base (42) and does not protrude from the connecting base (41) and the maximum outer diameter of the central tube body (12); and An auxiliary connecting tube (43) is connected to the mounting base (42) and is configured to engage with the connecting hole (142).

4. The repair device according to claim 1, wherein, The middle tube body (12) includes: The second internal tube (122) has a plurality of first injection holes (1221) on its surface, and the connecting pipe (141) and the connecting hole (142) are respectively provided at both ends of the second internal tube (122); and The second outer tube (121) is sleeved on the outside of the second inner tube (122). The cavity between the second outer tube (121) and the second inner tube (122) provides a buffer space for the repair slurry. The surface of the second outer tube is provided with a plurality of second injection holes (1211) for releasing and conveying the repair slurry.

5. The repair device according to claim 1, wherein, The first end of the tail cone (13) is rotatably connected to the connecting hole of the last middle tube (12), and the second end is a conical mechanism used to advance soil from the embankment shoulder for grouting repair.

6. The repair device according to claim 1, wherein, The number of the central tube (12) is determined based on the length and depth of the embankment cracks.

7. The repair device according to claim 1, further comprising: A flow monitoring mechanism (5) is detachably mounted on the side of the control mechanism (2) to monitor the flow rate and amount of the repair slurry.

8. A method for repairing cracks based on the repair equipment according to any one of claims 1 to 7, comprising: Use monitoring equipment to obtain data on crack location and crack size; Based on the crack location data and crack size data, the location data, size data, and amount of repair grout used for the repair equipment are determined, wherein the repair equipment is embedded below the crack depth direction through the shoulder slope of the embankment; The flow rate and pressure monitoring mechanisms in the repair equipment are used to monitor the transmission flow rate and pressure data of the repair slurry; and The repair operation stops when both the transmission traffic data and the transmission pressure data meet their respective preset thresholds.

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