Steel sleeve composite structure for trenchless repair of pipelines and its rapid installation method

Abstract

The application relates to the technical field of underground pipe network repair of municipal works, and discloses a steel sleeve composite structure for trenchless repair of a pipeline and a quick installation method thereof, which comprises a gap filling layer and a plurality of steel sleeves spliced to form a pipeline, the steel sleeve is longitudinally connected and spliced by a plurality of unit plates, the unit plate comprises an arc-shaped steel plate and a dome-shaped steel plate, the dome-shaped steel plate is located above the arc-shaped steel plate, and the dome-shaped steel plate and the arc-shaped steel plate are coaxially arranged; a positioning support block is arranged at the joint of the arc-shaped steel plate and the dome-shaped steel plate, and a positioning groove for installing a positioning protrusion is arranged on the inner side of the bottom of the dome-shaped steel plate; a grouting hole and an exhaust hole are arranged on the dome-shaped steel plate or the arc-shaped steel plate. The steel sleeve structure reduces damage to the inner wall of the original pipeline during installation, and meanwhile, the new pipeline can maintain a large pipe diameter, thereby avoiding the problem that the new pipeline needs to be made very small in the traditional technology; the upper part is arranged in an arc-shaped structure, which is convenient for installation and guarantees the bearing capacity and stability of the structure.

Description

Technical Field

[0001] This invention relates to the field of underground pipeline repair technology in municipal engineering, specifically to a steel sleeve composite structure for trenchless pipeline repair and its rapid installation method. Background Technology

[0002] As urban underground pipelines age, they develop structural defects such as corrosion, cracking, and deformation, including drainage, water supply, and gas pipelines. Traditional open-cut repair methods suffer from significant drawbacks, including long construction periods, substantial traffic disruption, high overall costs, and severe environmental damage. Trenchless repair technologies have therefore become the mainstream approach. Commonly used methods such as in-situ solidification polypropylene (CIPP) and spiral winding primarily utilize polymer materials (such as fiberglass and PE). While these methods solve the excavation problem, they have limitations in the following scenarios: 1. Insufficient strength and stiffness: For large-diameter pipelines with high internal pressure or complex external loads, polymer linings have limited long-term pressure resistance and deformation resistance.

[0003] 2. Durability challenges: In industrial pipelines containing corrosive media or at high temperatures, polymer materials are prone to aging and have relatively weak chemical corrosion resistance.

[0004] 3. Limited structural reinforcement effect: For pipelines with severe deformation or structural instability, a repair method is needed that can significantly restore or even improve the original pipeline structure stiffness.

[0005] In summary, existing steel lining technologies mostly employ continuous thin-walled steel pipes pulled in as a single unit. This requires extremely high flatness of the pipe's inner wall and is difficult to adapt to non-circular pipes or pipes with severe local deformation, resulting in poor construction flexibility. Therefore, there is an urgent need for a trenchless rigid pipe repair technology that combines high strength, high durability, strong adaptability, and rapid construction. Summary of the Invention

[0006] The present invention aims to provide a steel sleeve composite structure for trenchless pipeline repair and its rapid installation method, in order to solve the problems of current pipeline repair technology, which uses thin-walled steel pipes to be pulled in as a whole, which has high requirements for pipeline flatness and poor construction flexibility.

[0007] To achieve the above objectives, the present invention provides a steel sleeve composite structure for trenchless pipeline repair, comprising: a gap filling layer and a plurality of steel sleeves spliced ​​together to form a pipeline, wherein the gap filling layer is located between the steel sleeves and the inner wall of the original pipeline; the steel sleeve is formed by longitudinally connecting and splicing multiple unit plates, wherein the unit plates include arched steel plates and arc-shaped steel plates, wherein the arched steel plate is located above the arc-shaped steel plate, and the arched steel plate and the arc-shaped steel plate are coaxially arranged; a positioning support block is provided at the connection between the arc-shaped steel plate and the arched steel plate, and a positioning groove for installing a positioning protrusion is provided on the inner side of the bottom of the arched steel plate; grouting holes and venting holes are provided on the arched steel plate or the arc-shaped steel plate.

[0008] Preferably, it also includes an inner steel ring, which is evenly distributed on the inner wall of the steel sleeve at a preset interval. The inner steel ring constrains the local buckling deformation of the steel sleeve structure and significantly improves the ring stiffness of the overall structure.

[0009] Preferably, the bottom of the positioning groove is provided with a sealing strip. The sealing strip ensures the sealing of the connection between the arched steel plate and the arc-shaped steel plate, and minimizes the intrusion of impurities into the connection between the two, which would affect the ring stiffness of the overall structure.

[0010] Preferably, the sidewall of the positioning groove is provided with a water-swellable sealing strip. The water-swellable sealing strip is provided to minimize the risk of water immersion at the connection between the two parts and corrode the structure, thereby ensuring the waterproof performance of the connection between the sidewalls and preventing any impact on the normal use of the pipeline.

[0011] Preferably, both ends of the arched steel plate and / or curved steel plate sleeve are respectively provided with interlocking positioning grooves and positioning blocks. This facilitates quick and easy positioning and connection of adjacent steel sleeve structures, making construction more convenient and faster.

[0012] Preferably, the bottom of the arc-shaped steel plate is provided with an axial steel bar. The steel bar is provided to maintain a certain distance between the arc-shaped steel plate and the lower wall of the original pipe, so that the arched steel plate and the arc-shaped steel plate are coaxially arranged after installation. This allows the arc-shaped structure to position and support the arch-shaped structure, avoid deformation of the arch-shaped structure, and maintain its good compressive strength.

[0013] To achieve the above objectives, the present invention also provides a rapid installation method for a steel sleeve composite structure for trenchless pipeline repair, comprising: Step 1: Pipeline Inspection and Pre-treatment: Measure and assess the pipeline to be repaired, and perform dredging and cleaning pre-treatment. Step 2: Modular prefabrication and transportation: Based on the measurement data of the pipeline to be repaired, prefabricate 2-3m arched steel plates and curved steel plates, and then transport them to the installation site; Step 3: On-site assembly and pushing: Inside the starting shaft, install the corresponding sealing strips at the preset positions on the arched or curved steel plates of a single standard segment. Place the arched steel plate with the opening facing down on the support part at the top of the support trolley, and place the curved steel plate with the opening facing up on the telescopic support part in the middle of the support trolley, so that the curved steel plate is partially located inside the arched steel plate. Use hydraulic equipment or traction equipment to cooperate with the support trolley to transport the arched and curved steel plates to the corresponding installation positions along the original pipeline. Then, the telescopic support rod of the support trolley located inside the current arched steel plate extends to support the arched structure. Then, retract the traveling wheels of the support trolley located inside the current arched steel plate. Then, the support trolley lowers the curved steel plate, and the curved steel plate moves downward to assemble with the arched steel plate. After the assembly is completed, fix the arched and curved steel plates with bolts to complete the installation of the steel sleeve of a single standard segment. Repeat the above steps to complete the installation of the arched and curved steel plates of the next standard segment. Step 4: Gap pressure grouting: After the pipeline repair section is installed, grout is injected into the gap between the steel sleeve and the original pipeline through the grouting system to ensure that the gap between the steel sleeve and the original pipeline is filled tightly; Step 5: Final sealing of joints and treatment of inner walls: Repair the inner wall of the steel sleeve with a final anti-corrosion coating or spray a wear-resistant surface layer; Step 6: Quality Inspection and Acceptance: Conduct quality inspection on the repaired pipeline section to ensure that it meets the preset repair requirements.

[0014] Preferably, the support portion at the top of the support trolley is used to support the arched steel plates of two adjacent standard segments. When installing the arc-shaped steel plate of the next standard segment, the wheels of the support trolley located within the arched steel plate of the previous standard segment are first released, and then the wheels of the support trolley located within this standard segment are retracted. The positioning and support of the support trolley allows for quick positioning and installation of the next steel sleeve, while also helping to maintain the arched structure of the next steel sleeve. By retracting the wheels of the support trolley within different standard segments, the support trolley can also support the arched steel plate above it while installing the arc-shaped steel plate, facilitating the rapid assembly and installation of the arched and arc-shaped steel plates.

[0015] Preferably, after the arched steel plate and the arc-shaped steel plate are installed in step 4, an inner steel ring is installed on the inner wall of both.

[0016] Preferably, the supporting trolley is A-shaped and includes a frame. The frame is provided with a support part, a telescopic support rod, a telescopic support part, a traveling wheel, and a retraction mechanism for controlling the retraction of the traveling wheel from top to bottom. The support part is located at the top of the frame, the telescopic support part is located in the middle of the frame and is symmetrically arranged on the front and rear sides of the frame, the telescopic support rod is symmetrically arranged on the front and rear sides of the frame, and the traveling wheel is located at the bottom of the frame and is symmetrically arranged on the front and rear sides of the frame.

[0017] Advantages of this solution: The arched structure bends under gravity during movement, leaving a large gap between the arched steel plate and the original pipe wall during transportation. This avoids the need to make the new pipe very small, as required by traditional techniques. It maintains a large pipe diameter while reducing impacts and damage to the inner wall of the original pipe and the anti-corrosion layer. Installation is also easier and better suited for pipe bends. The arched upper structure facilitates installation, ensures the load-bearing capacity and stability of the structure, and guarantees the overall ring stiffness. Pipe connections can bend, making it suitable for curved pipes, offering greater adaptability and installation flexibility. The positioning support blocks and positioning grooves form a positioning device, facilitating the assembly of the arched and curved steel plates. Simultaneously, the curved steel plate provides positioning support for the arched steel plate, preventing deformation of the arched structure. The arched and curved steel plates can be transported simultaneously via a support trolley, reducing equipment transport time and improving construction efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the steel sleeve composite structure for trenchless pipeline repair according to an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the steel sleeve composite structure for trenchless pipeline repair according to an embodiment of the present invention.

[0020] Figure 3 This is a flowchart illustrating the rapid installation method of the steel sleeve composite structure for trenchless pipeline repair according to an embodiment of the present invention. Detailed Implementation

[0021] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: arched steel plate 1, positioning groove 11, arc-shaped steel plate 2, positioning support block 21, support trolley 3, support part 31, telescopic support rod 32, telescopic support part 33, traveling wheel 34, and original pipe 4. Example

[0022] A steel sleeve composite structure for trenchless pipeline repair, such as Figure 1 and Figure 2 As shown, it includes: a gap filling layer and several steel sleeves spliced ​​together to form a pipe. The steel sleeves are cylindrical, and the diameter of the steel sleeves is set according to the pipe to be repaired.

[0023] The steel sleeve is composed of multiple unit plates longitudinally connected and assembled. Each unit plate includes an arched steel plate 1 and an arc-shaped steel plate 2. In this embodiment, the central angle of the arched steel plate 1 is 240°, and the circular angle of the arc-shaped steel plate 2 is 120°. The arched steel plate 1 and the arc-shaped steel plate 2 are coaxially arranged, and are assembled to form a complete steel sleeve. In this embodiment, both the arched steel plate 1 and the arc-shaped steel plate 2 are made of weather-resistant structural steel or corrosion-resistant steel, such as Q355NH. The thickness of the arched steel plate 1 and the arc-shaped steel plate 2 is determined according to the design load, and is typically set to 4-12mm. The inner and outer surfaces of the arched steel plate 1 and the arc-shaped steel plate 2 are coated with anti-corrosion coatings to ensure long-term underground operation, such as epoxy zinc-rich primer + polyurethane topcoat coating. Appropriate anti-corrosion coatings can be selected according to the specific pipeline environment to extend the service life of the steel sleeve. In this embodiment, the length of the arched steel plate 1 and the arc-shaped steel plate 2 is 2-3m.

[0024] Among them, the arched steel plate 1 is located above the arc-shaped steel plate 2. In this way, the arched structure is used to bear the pressure and has strong resistance to deformation, which is conducive to maintaining the stability of the structure.

[0025] A positioning support block 21 is provided at the connection between the arc-shaped steel plate 2 and the arched steel plate 1. A positioning groove 11 for installing positioning protrusions is provided on the inner side of the bottom of the arched steel plate 1. The positioning support block 21 and the positioning groove 11 form a positioning device, which facilitates the splicing of the arched steel plate 1 and the arc-shaped steel plate 2. Simultaneously, the arc-shaped steel plate 2 provides positioning support for the arched steel plate 1, preventing deformation of the arched structure. In this embodiment, high-strength bolts are provided at the connection between the arc-shaped steel plate 2 and the arched steel plate 1 to ensure the connection strength. The positioning support block 21 and the positioning groove 11 also facilitate the installation of the high-strength bolts.

[0026] The bottom of the positioning groove 11 is equipped with a sealing strip. The sealing strip ensures the sealing of the connection between the arched steel plate 1 and the arc-shaped steel plate 2, and minimizes the intrusion of impurities into the connection between the two, which would affect the ring stiffness of the overall structure.

[0027] The side wall of the positioning groove 11 is equipped with a water-swellable water-stop strip. The water-swellable water-stop strip is installed to prevent water from entering the connection between the two and corroding the structure, ensuring the waterproof performance of the connection between the side walls of the two and avoiding affecting the normal use of the pipeline.

[0028] The arched steel plate 1 or the arc-shaped steel plate 2 is provided with grouting holes and venting holes, which facilitates the subsequent grouting system to grout and vent between the steel sleeve and the original pipe 4 wall.

[0029] The arched steel plate 1 and / or the arc-shaped steel plate 2 are respectively provided with interlocking positioning grooves and positioning blocks at both ends of the steel sleeve. This facilitates quick and easy positioning and connection of adjacent steel sleeve structures, making construction more convenient and faster. In this embodiment, the positioning block is tapered, and the positioning groove is correspondingly set. The tapered shape allows adjacent steel sleeves to be quickly connected and assembled.

[0030] The bottom of the arc-shaped steel plate 2 is provided with axial steel bars. These bars maintain a certain distance between the arc-shaped steel plate 2 and the lower wall of the original pipe 4, ensuring that the arched steel plate 1 and arc-shaped steel plate 2 are coaxially aligned after installation. This allows the arc-shaped structure to provide positioning support for the arched structure, preventing deformation and maintaining good compressive strength. The steel bars also have through holes perpendicular to their direction, facilitating mortar flow during subsequent grouting and minimizing its impact. In this embodiment, the steel bars are made of the same material as the arc-shaped steel plate 2, and are located in the middle of the arc-shaped steel plate 2. The steel bars and arc-shaped steel plate 2 are integrally formed, which helps improve structural strength.

[0031] It also includes an inner steel lining ring, which is evenly distributed on the inner wall of the steel sleeve at a preset interval. The inner steel lining ring constrains the local buckling deformation of the steel sleeve structure, significantly improving the overall ring stiffness. In this embodiment, the inner steel lining ring is evenly distributed on the inner wall of the steel sleeve at intervals of 0.5-1.5 meters. The cross-section of the inner steel lining ring is "T-shaped," "L-shaped," or "I-shaped," a shape that provides excellent bending resistance and circumferential stiffness to further constrain and position the arched steel plate 1 and the curved steel plate 2. In this embodiment, the inner steel lining ring is welded and fixed to the inner wall of the steel sleeve by intermittent welding or high-strength bolt connection. The inner steel lining ring forms reinforcing ribs on the inner wall of the steel sleeve, increasing the moment of inertia of the overall composite structure section.

[0032] The gap filling layer is located between the steel sleeve and the inner wall of the original pipe 4. The gap filling layer is formed by micro-expansion high-strength grouting material or modified epoxy mortar. The gap filling layer connects the steel sleeve composite structure and the original pipe 4 to form a whole, which can evenly transfer the load and effectively prevent groundwater from seeping into the arched steel plate 1 and the arc-shaped steel plate 2, thus extending the service life of the repaired pipe.

[0033] In this embodiment, a double seal is provided at all joints using water-swellable rubber sealing strips and injected sealant to ensure the overall waterproof performance of the structure.

[0034] This invention also provides a rapid installation method for the aforementioned steel sleeve composite structure for trenchless pipeline repair, such as... Figure 3 As shown, it includes: Step 1: Pipeline inspection and pretreatment: Measure and assess the pipeline to be repaired, and perform dredging and cleaning pretreatment.

[0035] In this step, the upstream and downstream sides of the pipe to be repaired are first sealed to prevent water from entering. Then, the silt and impurities inside the pipe are cleaned, specifically by using a high-pressure water gun to flush the inner wall of the pipe. After the pipe is cleaned, a CCTV pipe robot is placed in the pipe to inspect it and return data. Based on the returned data, the construction personnel evaluate and prepare a pipe repair plan, including details such as the location, length, and diameter of the pipe to be repaired.

[0036] Step 2: Modular prefabrication and transportation: Based on the measurement data of the pipeline to be repaired, prefabricate 2-3m arched steel plate 1 and arc-shaped steel plate 2, and then transport them to the installation site.

[0037] This step also involves prefabricating a corresponding number of inner steel rings and transporting them to the installation site.

[0038] Step 31: On-site assembly and delivery: Inside the launching shaft, install corresponding sealing strips at preset positions on the arched steel plate 1 or arc-shaped steel plate 2 of a single standard segment. Place the arched steel plate 1 with its opening facing down on the support part 31 at the top of the support trolley 3, and place the arc-shaped steel plate 2 with its opening facing up on the telescopic support part 33 in the middle of the support trolley 3, so that part of the arc-shaped steel plate 2 is located inside the arched steel plate 1. Use hydraulic equipment or traction equipment in conjunction with the support trolley 3 to transport the arched steel plate 1 and arc-shaped steel plate 2 to the corresponding installation positions along the original pipeline 4. Then, the support trolley 3 is positioned inside the current arched steel plate 1. The telescopic support rod 32 extends to support the arched structure, and then the support trolley 3 retracts the traveling wheels 34 located inside the current arched steel plate 1. In this embodiment, retracting the traveling wheels 34 is to move the traveling wheels 34 away from the bottom inner wall of the original pipe 4, leaving installation space for the arc-shaped steel plate 2. Then the support trolley 3 lowers the arc-shaped steel plate 2, and the arc-shaped steel plate 2 moves downward to assemble with the arched steel plate 1. After the assembly is completed, the arched steel plate 1 and the arc-shaped steel plate 2 are fixed with bolts to complete the installation of the steel sleeve of a single standard segment. The above steps are repeated to complete the installation of the arched steel plate 1 and the arc-shaped steel plate 2 of the next standard segment.

[0039] In this step, the arched steel plate 1 and the curved steel plate 2 are made of 8mm thick Q355C steel plate, each section is 2.5 meters long, and are coated with heavy-duty anti-corrosion epoxy coating inside and out.

[0040] In this design, the supporting trolley 3 is A-shaped and includes a frame. From top to bottom, the frame is equipped with a support section 31, a telescopic support rod 32, a telescopic support section 33, wheels 34, and a mechanism for controlling the extension and retraction of the wheels 34. The support section 31 is located at the top of the frame, and the telescopic support section 33 is located in the middle of the frame, symmetrically arranged on the front and rear sides of the frame. The telescopic support rod 32 is symmetrically arranged on the front and rear sides of the frame and is used to support the arched steel plate 1. The wheels 34 are symmetrically arranged at the bottom of the frame, also symmetrically arranged on the front and rear sides of the frame. The support section 31 at the top of the supporting trolley 3 supports two adjacent standard segments of the arched steel plate 1. In this embodiment, the telescopic structure and extension and retraction mechanism of the supporting trolley 3 adopt existing technologies such as hydraulic cylinders, electric cylinders, servo motors, and linkage structures, which will not be described in detail here.

[0041] Step 32: When installing the arc-shaped steel plate 2 of the next standard segment, first release the traveling wheels 34 of the support trolley 3 located within the arched steel plate 1 of the previous standard segment, and then retract the traveling wheels 34 of the support trolley 3 within this standard segment. The positioning and support of the support trolley 3 allows for quick positioning and installation of the next steel sleeve, while also helping to maintain the arched structure of the next steel sleeve. By retracting the traveling wheels 34 of the support trolley 3 within different standard segments, the support trolley 3 can also support the arched steel plate 1 above it while installing the arc-shaped steel plate 2, facilitating the rapid assembly and installation of the arched steel plate 1 and the arc-shaped steel plate 2.

[0042] Step 4: Gap pressure grouting: After the pipeline repair section is installed, grout is injected into the gap between the steel sleeve and the original pipeline 4 through the grouting system to ensure that the gap between the steel sleeve and the original pipeline 4 is filled tightly.

[0043] After the arched steel plate 1 and the arc-shaped steel plate 2 are installed in this step, inner steel rings are installed on the inner walls of both. The inner steel rings are made of T100×100×8×12 hot-rolled T-shaped steel with a circumferential spacing of 800mm.

[0044] In this step, the gap filling layer uses CGM-80 ultra-high strength non-shrink grout.

[0045] Step 5: Final sealing of joints and treatment of inner walls: Apply a final anti-corrosion coating or spray a wear-resistant surface layer to the inner wall of the steel sleeve.

[0046] Step 6: Quality Inspection and Acceptance: Conduct quality inspection on the repaired pipeline section to ensure that it meets the preset repair requirements.

[0047] This step specifically employs CCTV endoscopy, grout density testing (such as the impact method or radar method), and pressure testing to conduct quality inspections on the installed steel sleeve composite structure. The overall ring stiffness of the pipeline repaired using this method is significantly improved, capable of withstanding an internal water pressure of 0.35 MPa and a 15-meter soil cover load, fully meeting structural regeneration standards. The construction period is shortened by 70% compared to the traditional open-cut method, and the overall cost is reduced by approximately 40%.

[0048] This solution breaks down a single pipe into an arched structure and an arc-shaped structure, allowing for a larger gap between the new pipe and the original pipe wall during repair and transportation. This reduces impacts, damage to the inner wall of the original pipe, and damage to the anti-corrosion layer. Simultaneously, the new pipe has a larger diameter after installation, solving the problems of traditional technologies requiring very small new pipes and difficulties in installation at bends. The modular design allows for flexible adaptation to different pipe diameters and lengths, making it suitable for pipes with bends and highly versatile. The positioning support block 21 and positioning groove 11 form a positioning device, facilitating the assembly of the arched steel plate 1 and the arc-shaped steel plate 2. Simultaneously, the arc-shaped steel plate 2 provides positioning support for the arched steel plate 1, preventing deformation of the arched structure.

[0049] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention. In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral 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. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A steel sleeve composite structure for trenchless pipeline repair, characterized in that, The system includes a gap-filling layer and several steel sleeves spliced ​​together to form a pipe. The gap-filling layer is located between the steel sleeve and the inner wall of the original pipe. The steel sleeve is composed of multiple unit plates connected and spliced ​​longitudinally. The unit plates include arched steel plates and arc-shaped steel plates. The arched steel plate is located above the arc-shaped steel plate, and the arched steel plate and the arc-shaped steel plate are coaxially arranged. A positioning support block is provided at the connection between the arc-shaped steel plate and the arched steel plate. A positioning groove for installing a positioning protrusion is provided on the inner side of the bottom of the arched steel plate. Grouting holes and venting holes are provided on the arched steel plate or the arc-shaped steel plate.

2. The steel sleeve composite structure for trenchless pipeline repair according to claim 1, characterized in that, It also includes an inner steel lining ring, which is evenly distributed on the inner wall of the steel sleeve at a preset interval.

3. The steel sleeve composite structure for trenchless pipeline repair according to claim 1, characterized in that: The bottom of the positioning groove is equipped with a sealing strip.

4. The steel sleeve composite structure for trenchless pipeline repair according to claim 1, characterized in that: The side wall of the positioning groove is provided with a water-swellable water-stop strip.

5. The steel sleeve composite structure for trenchless pipeline repair according to claim 1, characterized in that: The arched steel plate and / or the arc-shaped steel plate sleeve are respectively provided with interlocking positioning grooves and positioning blocks at both ends.

6. The steel sleeve composite structure for trenchless pipeline repair according to claim 1, characterized in that: The bottom of the arc-shaped steel plate is provided with axial steel bars.

7. The rapid installation method for the steel sleeve composite structure for trenchless pipeline repair according to claim 1, characterized in that, Includes the following steps: Step 1: Pipeline Inspection and Pre-treatment: Measure and assess the pipeline to be repaired, and perform dredging and cleaning pre-treatment. Step 2: Modular prefabrication and transportation: Based on the measurement data of the pipeline to be repaired, prefabricate 2-3m arched steel plates and curved steel plates, and then transport them to the installation site; Step 3: On-site assembly and pushing: Inside the starting shaft, install the corresponding sealing strips at the preset positions on the arched or curved steel plates of a single standard segment. Place the arched steel plate with the opening facing down on the support part at the top of the support trolley, and place the curved steel plate with the opening facing up on the telescopic support part in the middle of the support trolley, so that the curved steel plate is partially located inside the arched steel plate. Use hydraulic equipment or traction equipment to cooperate with the support trolley to transport the arched and curved steel plates to the corresponding installation positions along the original pipeline. Then, the telescopic support rod of the support trolley located inside the current arched steel plate extends to support the arched structure. Then, retract the traveling wheels of the support trolley located inside the current arched steel plate. Then, the support trolley lowers the curved steel plate, and the curved steel plate moves downward to assemble with the arched steel plate. After the assembly is completed, fix the arched and curved steel plates with bolts to complete the installation of the steel sleeve of a single standard segment. Repeat the above steps to complete the installation of the arched and curved steel plates of the next standard segment. Step 4: Gap pressure grouting: After the pipeline repair section is installed, grout is injected into the gap between the steel sleeve and the original pipeline through the grouting system to ensure that the gap between the steel sleeve and the original pipeline is filled tightly; Step 5: Final sealing of joints and treatment of inner walls: Apply a final anti-corrosion coating or spray a wear-resistant surface layer to the inner wall of the steel sleeve. Step 6: Quality Inspection and Acceptance: Conduct quality inspection on the repaired section of the pipeline to ensure that it meets the preset repair requirements.

8. The rapid installation method for the steel sleeve composite structure for trenchless pipeline repair according to claim 7, characterized in that: The support portion at the top of the support trolley is used to support the arched steel plates of two adjacent standard segments; when installing the arc-shaped steel plate of the next standard segment, the traveling wheels of the support trolley located in the arched steel plate of the previous standard segment are first released, and then the traveling wheels of the support trolley located in this standard segment are retracted.

9. The rapid installation method for the steel sleeve composite structure for trenchless pipeline repair according to claim 7, characterized in that: In step 4, after the arched steel plate and the arc-shaped steel plate are installed, inner steel rings are installed on the inner walls of both.

10. The rapid installation method for the steel sleeve composite structure for trenchless pipeline repair according to claim 7, characterized in that: The supporting trolley is A-shaped and includes a frame. From top to bottom, the frame is provided with a support part, a telescopic support rod, a telescopic support part, a traveling wheel, and a retraction mechanism for controlling the retraction of the traveling wheel. The support part is located at the top of the frame, the telescopic support part is located in the middle of the frame and is symmetrically arranged on the front and rear sides of the frame, the telescopic support rod is symmetrically arranged on the front and rear sides of the frame, and the traveling wheel is located at the bottom of the frame and is symmetrically arranged on the front and rear sides of the frame.

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