Construction method for repairing reinforced concrete sewage pipeline with water through mechanical spiral winding pipe

Abstract

The invention relates to a construction method for repairing a reinforced concrete sewage pipeline with water through a mechanical spiral winding pipe. The construction method comprises the following steps of plugging and inverted discharging, pipeline clearing and dredging, pipeline winding and pipeline grouting. The device has the beneficial effects that an air bag-horizontal steel sleeve combined plugging technology is provided, an upstream sewage pipe combined plugging structure system and a downstream sewage pipe combined plugging structure system are researched and developed respectively, the structure composition is simple, and the plugging effect is good; the underground limited space profile arrangement technology is provided, the arrangement of the underground limited space profile is achieved through matched use of the customized frame and the lining protection piece, and the construction efficiency is improved; a steel-plastic composite liner pipe orifice fixing and positioning technology is provided, through the use of multiple groups of hydraulic jacks, the positioning precision of the orifice of the winding machine is improved, and the construction progress is accelerated; a composite liner pipe anti-floating technology is provided, the damping effect of the hydraulic expansion piece is utilized to enable the reinforcing profile to be tightly attached to the sewage pipeline, and the construction quality is improved.

Description

Technical Field

[0001] The invention belongs to the field of sewage pipe repair, and in particular relates to a construction method for repairing a reinforced concrete sewage pipe with water by using a mechanical spirally wound pipe. Background Art

[0002] In today's pipeline engineering field, with the acceleration of urbanization and the continuous renewal of infrastructure, higher and higher requirements are put forward for pipeline performance, repair efficiency and environmental protection. Mechanical spiral winding pipes have emerged as an innovative pipeline solution and are gradually emerging in the industry.

[0003] Traditional pipeline installation and repair methods often face many limitations, such as the damage to the surrounding environment caused by excavation construction, long construction period, and the impact of water and power outages on residents' lives and production. The mechanical spiral winding pipe technology, with its unique advantages, provides new ideas and ways to solve these problems. It can not only be constructed in the presence of water, greatly reducing the interference with normal water supply, drainage or other medium transportation, but also the construction process is relatively simple and fast, which can effectively shorten the construction period and reduce construction costs. In addition, the mechanical spiral winding pipe has good adaptability and can be used for the repair and construction of pipelines of different materials, different diameters and different shapes. The pipes made from it also have high strength, corrosion resistance and sealing, which can meet various complex engineering needs. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a mechanical spirally wound pipe water-repair reinforced concrete sewage pipe construction method.

[0005] The construction method of the mechanical spirally wound pipe with water to repair the reinforced concrete sewage pipe comprises the following steps: S1. Blocking and reverse discharge: Use bags to block the upstream and downstream of the sewage pipe section to be repaired; S2. Pipeline clearing: Use a combined flushing vehicle and high-pressure water flushing to clear the pipeline. The flushing vehicle includes a nozzle, a hose and a pump. Start construction from the downstream wellhead and use a sewage suction vehicle or a mud pump to pump out the sewage and other mixtures cleaned out of the inspection well; S3, Pipe winding: PVC profiles and steel belts are set on both sides of the inspection well through a customized frame, and the winding machine is placed at the bottom of the inspection well to wind the sewage pipe. Reinforcement profiles are set on the inside of the sewage pipe, and anti-floating devices are installed in the reinforcement profiles; S4. Pipeline grouting: seal the intersection of the newly wound pipe and the original pipe.

[0006] Preferably, in step S1: a bladder bag is arranged in a sewage well upstream of the sewage pipe section to be repaired, the bladder bag is connected to an inflation tube, a casing is arranged outside the bladder bag, the casing is reinforced with internal support rods, water is injected into the casing, a bladder bag is arranged in a sewage well downstream of the sewage pipe, an arc-shaped steel plate is arranged outside the bladder bag, and fixed rings are arranged above and below the arc-shaped steel plate respectively.

[0007] Preferably, in step S2, according to the on-site pipeline conditions, a combined flushing vehicle and high-pressure water flushing are selected to clear the pipeline, the nozzle and the hose are placed in the pipeline, and before turning on the pump, the nozzle is placed at the end of the pipeline. The nozzle is always in motion and is sent into the pipeline to be cleaned. Then, during the pull-back process, the debris in the pipeline is flushed into the downstream working well and the debris is removed.

[0008] Preferably, in step S2, while the pipeline is being cleaned under high pressure, the mud and sewage cleaned out by the nozzle are discharged out of the pipeline; after the pipeline is desilted, the inner wall of the pipeline is cleaned.

[0009] Preferably, in step S3, PVC profiles and steel strips are arranged on both sides of the inspection well, and the PVC profiles and steel strips are placed on a customized frame, which includes a tripod, an upper cross bar, a lower cross bar and a coil ring, connecting rods are arranged between the customized frames, and an inner lining protective part is arranged on the inner side of the well ring.

[0010] Preferably, in step S3, the lining protective component includes a lining steel ring, a lining wheel assembly and reinforcing ribs, the lining steel ring fits in the well ring, and the lining steel ring is fixed by reinforcing ribs.

[0011] Preferably, in step S3, the wrapping machine is placed on a steel support, the steel support includes a moving device, a base plate, an outer ring frame and a hydraulic jack, a flexible pad is arranged between the hydraulic jack and the wrapping machine, the moving device includes hydraulic telescopic legs and wheels, and the moving device is arranged below the base plate.

[0012] Preferably, in step S3, a reinforcement profile is arranged inside the sewage pipe, and an anti-floating device is installed inside the reinforcement profile, and the anti-floating device includes a hydraulic expander and a mover.

[0013] Preferably, in step S4, the intersection of the newly wound pipe and the original pipe is sealed, and cement slurry is injected into the gap between the new pipe and the original pipe; after the lining pipe is installed, the gap between the new and old pipes is sealed.

[0014] A mechanical spirally wound pipe with water to repair a reinforced concrete sewage pipe is obtained by any of the above-mentioned methods.

[0015] The beneficial effects of the present invention are: 1) The present invention proposes an airbag-horizontal steel sleeve combined plugging technology, and develops a combined plugging structure system for upstream and downstream sewage pipes, respectively, which has a simple structure and good plugging effect.

[0016] 2) The present invention proposes a technology for arranging profiles in underground confined spaces. By using customized frames and lining protective parts in coordination, the arrangement of profiles in underground confined spaces is solved, thereby improving construction efficiency.

[0017] 3) The present invention proposes a steel-plastic composite liner hole fixing and positioning technology. By using multiple sets of hydraulic jacks, the hole positioning accuracy of the winding machine is improved, and the construction progress is accelerated.

[0018] 4) The present invention proposes a composite liner anti-floating technology, which uses the damping effect of the hydraulic expansion joint to make the reinforced profile fit tightly with the sewage pipe, thereby improving the construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the mechanical winding water belt construction of the present invention; Figure 2 It is a custom rack schematic; Figure 3 It is a schematic diagram of the lining guard; Figure 4 It is a schematic diagram of the steel support; Figure 5 is a schematic diagram of a mobile device; Figure 6 It is a schematic diagram of the anti-floating device.

[0020] Explanation of the reference numerals: 1-winding machine, 2-steel support, 3-sewage pipe, 4-casing, 5-inner support rod, 6-bladder bag, 8-inflatable tube, 9-PVC profile, 10-connecting rod, 11-steel belt, 12-custom frame, 13-lining guard, 14-fixed ring, 15-arc steel plate, 16-moving device, 17-hydraulic telescopic legs, 18-wheels, 19-bottom plate, 20-hydraulic jack, 21-flexible pad, 22-outer ring frame, 23-tripod, 24-lower cross bar, 25-upper cross bar, 26-coil ring, 27-well ring, 28-reinforced rib, 29-lining wheel assembly, 30-lining steel ring, 31-mover, 32-sewage, 33-hydraulic telescopic device, 34-reinforced profile, 35-anti-floating device. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with embodiments. The description of the following embodiments is only used to help understand the present invention. It should be noted that for ordinary persons in the art, without departing from the principle of the present invention, the present invention can also be modified in some ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0022] Embodiment 1 As an example, Figures 1 to 6As shown, the construction method of the mechanical spirally wound pipe with water to repair the reinforced concrete sewage pipe includes the following steps: S1. Well expansion construction: During construction, the inspection wells at both ends of the pipe section to be repaired are selected for spiral winding operations. If the diameter of the wellhead of the on-site inspection well is small, the existing wellbore needs to be expanded.

[0023] Block and reverse flow; use air bags that match the pipeline to be repaired to block the upstream and downstream of the pipeline section to be repaired to prevent water from the upstream pipeline from entering the pipeline.

[0024] S2. Clearing the pipeline: Use a combined flushing vehicle and high-pressure water flushing to clear the pipeline. The flushing vehicle includes a nozzle, a hose and a pump. Start construction from the downstream wellhead and use a suction truck or a mud pump to pump out the sewage and other mixtures cleaned out of the inspection well.

[0025] S3, pipe winding; PVC profile 9 and steel belt 11 are arranged on both sides of the inspection well through customized frames 12, connecting rods 10 are arranged between the customized frames 12, and the winding machine 1 is placed at the bottom of the inspection well to wind the sewage pipe 3. Reinforcement profile 34 is arranged on the inner side of the sewage pipe 3, and anti-floating device 35 is installed inside the reinforcement profile 34.

[0026] S4. Pipeline grouting: seal the intersection of the newly wrapped pipe and the original pipe, and inject cement slurry into the gap between the new pipe and the original pipe. When the lining pipe is completely installed, seal the gap between the new and old pipes, and the thickness of the seal should not be less than 200mm.

[0027] Embodiment 2 As another embodiment, this embodiment 2 proposes, based on the embodiment 1, a more specific construction method of mechanical spirally wound pipe water repair reinforced concrete sewage pipe: In step S1, Figure 1 As shown, a bag 6 is arranged in a sewage well upstream of the sewage pipe, the bag 6 is connected to an inflation tube 8, a casing 4 is arranged outside the bag 6, the casing 4 is reinforced by an inner support rod 5, water 7 is injected into the casing 4, a bag 6 is arranged in a sewage well upstream of the sewage pipe, an arc-shaped steel plate 15 is arranged outside the bag 6, and fixing rings 14 are arranged above and below the arc-shaped steel plate 15 respectively.

[0028] In step S2, according to the on-site pipeline conditions, a combined flushing vehicle and high-pressure water flushing are selected to clear the pipeline. Construction starts from the downstream wellhead, and the nozzle and hose are placed in the pipeline. Before turning on the pump, the nozzle is placed at the end of the pipeline. The nozzle must be in motion to avoid damaging the pipeline. The nozzle is sent into the pipeline to be cleaned, and then the debris in the pipeline is flushed into the downstream working well during the pull-back process, and the debris is removed.

[0029] During the high-pressure cleaning of the pipeline, since the downstream of the pipeline has been blocked, the sewage flushed out by the water jet of the cleaning nozzle cannot be discharged normally, so a sewage suction truck or a mud pump is used to pump the sewage and other mixtures cleaned out of the inspection well, so that the mud and sewage cleaned out by the nozzle can continue to be discharged smoothly from the pipeline. After the pipeline is desilted, the inner wall of the pipeline needs to be cleaned to remove tree roots, weeds and other debris that may be attached to the inner wall of the pipeline, and to make the inner wall of the pipeline as smooth as possible to reduce the resistance to the subsequent spiral winding repair of the pipeline.

[0030] It should be noted that the parts in this embodiment that are the same or similar to those in the first embodiment can be referenced to each other and will not be described in detail in this application.

[0031] Embodiment 3 As another embodiment, this embodiment 3 proposes, based on the embodiment 2, a more specific construction method of mechanical spirally wound pipe water repair reinforced concrete sewage pipe: In step S3, Figures 1 to 6 As shown, PVC profiles 9 and steel strips 11 are arranged on both sides of the inspection well, and PVC profiles 9 and steel strips 11 are placed on a custom frame 12, which is composed of a tripod 23, an upper crossbar 25, a lower crossbar 24, and a coil ring. A connecting rod 10 is arranged between the custom frames 12, and the lining guard is composed of a lining steel ring 30, a lining wheel assembly 29, and a reinforcing rib 28. The lining steel ring 30 is close to the well ring 27, and the lining steel ring 30 is fixed by the reinforcing rib 28. The wrapping machine 1 is placed on a steel support 2, and the steel support 2 is composed of a moving device 16, a bottom plate 19, an outer ring frame 22, a hydraulic jack 20, etc. A flexible pad 21 is arranged between the hydraulic jack 20 and the wrapping machine 1, and the moving device 16 is composed of a hydraulic telescopic leg 17 and a wheel 18, and the moving device 16 is arranged under the bottom plate 19. A reinforcing profile 34 is arranged on the inner side of the sewage pipe 3, and an anti-floating device 35 is installed in the reinforcing profile 34.

[0032] PVC profiles 9 and steel strips 11 are arranged on both sides of the inspection well. The PVC profiles 9 and steel strips 11 are placed on a customized frame 12. The customized frame 12 includes a tripod 23, an upper cross bar 25, a lower cross bar 24 and a coil ring. A connecting rod 10 is arranged between the customized frames 12. A lining guard is arranged on the inner side of the well ring 27. The lining guard includes a lining steel ring 30, a lining wheel assembly 29 and a reinforcing rib 28. The lining steel ring 30 is fitted in the well ring 27 and fixed by the reinforcing rib 28.

[0033] The bottom of the wrapping machine 1 is provided with a steel support 2, which includes a moving device 16, a bottom plate 19, an outer ring frame 22 and a hydraulic jack 20. A flexible pad 21 is arranged between the hydraulic jack 20 and the wrapping machine 1. The moving device 16 includes hydraulic telescopic legs 17 and wheels 18. The moving device 16 is arranged below the bottom plate 19; a reinforcing profile 34 is arranged on the inner side of the sewage pipe 3, and an anti-floating device 35 is installed in the reinforcing profile 34. The anti-floating device 35 includes a hydraulic telescopic device 33 and a mover 31.

[0034] It should be noted that the parts in this embodiment that are the same or similar to those in the second embodiment can be referenced to each other and will not be described in detail in this application.

[0035] Embodiment 4 As another embodiment, this embodiment 4 is proposed on the basis of embodiments 1 to 3, and the mechanical spirally wound pipe with water obtained by this method is used to repair reinforced concrete sewage pipes: like Figure 1 As shown, a bag 6 is arranged in the sewage well upstream of the sewage pipe, the bag 6 is connected to the inflation tube 8, a casing 4 is arranged outside the bag 6, the casing 4 is reinforced by an internal support rod 5, water is injected into the casing 4, and a bag 6 is arranged in the sewage well upstream of the sewage pipe, an arc-shaped steel plate 15 is arranged outside the bag 6, and fixed rings 14 are arranged above and below the arc-shaped steel plate 15 respectively.

[0036] like Figure 2 , Figure 3 As shown, the PVC profile 9 and steel belt 11 are arranged on both sides of the inspection well, and the PVC profile 9 and steel belt 11 are placed on a customized frame 12. The customized frame 12 is composed of a tripod 23, an upper cross bar 25, a lower cross bar 24, a coil ring, etc. A connecting rod 10 is arranged between the customized frames 12. The lining guard is composed of a lining steel ring 30, a lining wheel assembly 29, and a reinforcing rib 28. The lining steel ring 30 is close to the well ring 27, and the lining steel ring 30 is fixed by the reinforcing rib 28.

[0037] like Figure 4 , Figure 5 As shown, the wrapping machine 1 is placed on a steel support 2, and the steel support 2 is composed of a moving device 16, a base plate 19, an outer ring frame 22, a hydraulic jack 20, etc. A flexible pad 21 is arranged between the hydraulic jack 20 and the wrapping machine 1, and the moving device 16 is composed of hydraulic telescopic legs 17 and wheels 18, and the moving device 16 is arranged under the base plate 19.

[0038] like Figure 6 As shown, a reinforcement profile 34 is arranged inside the sewage pipe 3 , and an anti-floating device 35 is installed inside the reinforcement profile 34 . The anti-floating device 35 is composed of a hydraulic expansion joint 33 and a mover 31 .

[0039] It should be noted that the parts in this embodiment that are the same or similar to those in Embodiments 1 to 3 can be referenced to each other and will not be described in detail in this application.

[0040] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

Claims

1. A construction method for repairing reinforced concrete sewage pipes with water by mechanical spiral winding pipes, characterized in that: The following steps are involved: S1. Blocking and reverse discharge: Use bags to block the upstream and downstream of the sewage pipe section to be repaired; S2. Pipeline clearing: Use a combined flushing vehicle and high-pressure water flushing to clear the pipeline. The flushing vehicle includes a nozzle, a hose and a pump. Start construction from the downstream wellhead and use a sewage suction vehicle or a mud pump to pump out the sewage and other mixtures cleaned out of the inspection well; S3, Pipe winding: PVC profiles and steel belts are set on both sides of the inspection well through a customized frame, and the winding machine is placed at the bottom of the inspection well to wind the sewage pipe. Reinforcement profiles are set on the inside of the sewage pipe, and anti-floating devices are installed in the reinforcement profiles; S4. Pipeline grouting: seal the intersection of the newly wound pipe and the original pipe.

2. According to the construction method of mechanical spirally wound pipe water repair reinforced concrete sewage pipe according to claim 1, it is characterized in that: In step S1, a bladder bag is set in a sewage well upstream of the section of the sewage pipe to be repaired, the bladder bag is connected to an inflation pipe, a casing is set outside the bladder bag, the casing is reinforced with internal support rods, water is injected into the casing, and a bladder bag is set in a sewage well downstream of the sewage pipe, an arc-shaped steel plate is set outside the bladder bag, and fixed rings are respectively set above and below the arc-shaped steel plate.

3. The construction method of mechanical spirally wound pipe water repair reinforced concrete sewage pipe according to claim 1 is characterized in that: In step S2, according to the on-site pipeline conditions, a combined flushing vehicle and high-pressure water flushing are selected to clear the pipeline. The nozzle and hose are placed in the pipeline. Before turning on the pump, the nozzle is placed at the end of the pipeline. The nozzle is always in motion and is sent into the pipeline to be cleaned. Then, during the pull-back process, the debris in the pipeline is flushed into the downstream working well and the debris is removed.

4. The construction method of mechanical spirally wound pipe water repair reinforced concrete sewage pipe according to claim 3 is characterized in that: In step S2, while the pipeline is being cleaned under high pressure, the silt and sewage cleaned out by the nozzle are discharged from the pipeline; after the pipeline is desilted, the inner wall of the pipeline is cleaned.

5. The construction method of mechanical spirally wound pipe water repair reinforced concrete sewage pipe according to claim 1 is characterized in that: In step S3, the PVC profile and the steel strip are placed on a customized frame, which includes a tripod, an upper crossbar, a lower crossbar and a coil ring. Connecting rods are arranged between the customized frames, and lining protective parts are arranged on the inner side of the well ring.

6. The construction method of mechanical spirally wound pipe water repair reinforced concrete sewage pipe according to claim 5 is characterized in that: In step S3, the lining protective component includes a lining steel ring, a lining wheel assembly and reinforcing ribs. The lining steel ring fits in the well ring and is fixed by reinforcing ribs.

7. The construction method of mechanical spirally wound pipe water repair reinforced concrete sewage pipe according to claim 1 is characterized in that: In step S3, the wrapping machine is placed on a steel support, which includes a moving device, a base plate, an outer ring frame and a hydraulic jack. A flexible pad is arranged between the hydraulic jack and the wrapping machine. The moving device includes hydraulic telescopic legs and wheels, and the moving device is arranged below the base plate.

8. The construction method of mechanical spirally wound pipe water repair reinforced concrete sewage pipe according to claim 1 is characterized in that: In step S3, a reinforcement profile is arranged inside the sewage pipe, and an anti-floating device is installed inside the reinforcement profile. The anti-floating device includes a hydraulic expander and a mover.

9. The construction method of mechanical spirally wound pipe water repair reinforced concrete sewage pipe according to claim 1 is characterized in that: In step S4, the intersection of the newly wound pipe and the original pipe is sealed, and cement slurry is injected into the gap between the new pipe and the original pipe; after the lining pipe is installed, the gap between the new and old pipes is sealed.

10. Mechanical spiral wound pipe with water to repair reinforced concrete sewage pipe, characterized in that: Obtained by the method according to any one of claims 1 to 9.

Images