Large-caliber deep sea drainage steel pipe sewer slideway system

Abstract

The invention discloses a large-caliber deep sea drainage steel pipe sewer slideway system which comprises a living and office area, a material stacking area, a transfer area and an assembly pipe placing area, the assembly pipe placing area is constructed along a coast, the transfer area is arranged between the material stacking area and the assembly pipe placing area, and the living and office area is arranged on the side edge of the transfer area. Main components of the assembled pipe placing area comprise a reinforced concrete supporting wall and a concrete slide way beam, and the system adopts the reinforced concrete supporting wall and the concrete slide way beam as a system platform for large-diameter, long-distance and heavy-load steel pipes to enter the sea surface from the land. Meanwhile, the rubber plate and the fiber cloth serve as key measures for protection of a protective layer in the pipeline gliding process, the launching speed of the pipeline is controlled in cooperation with winches and pulley structures of different tonnages, the overall construction cost is lower than that of an existing profile steel sliding way system, an outer anti-corrosion layer of a steel pipe can be effectively protected through cooperation of all assemblies, abrasion is avoided, and the pipe joint quality is guaranteed; meanwhile, construction efficiency is improved, and construction risks are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of deep-sea pipeline construction, in particular to a large-diameter deep-sea discharge steel pipe launching slide system. Background Art

[0002] Deep-sea sewage pipeline construction refers to laying sewage pipelines in the deep sea to treat and discharge sewage. This construction method is usually used to treat large amounts of sewage, ensuring its safe discharge into the deep sea and reducing the impact on the nearshore environment. Deep-sea sewage pipeline construction involves multiple key steps and technical challenges. This construction technology can adapt to a variety of complex geological environments and is an important construction project in marine engineering.

[0003] Traditional deep-sea sewage pipeline construction has the following shortcomings during the construction process. In deep-sea sewage pipeline construction, transporting the pipeline from land to the water surface is a very important construction process. Due to the long length and heavy load of the spliced pipeline, it is difficult to transport the pipeline from land to the water surface by hoisting. Most of the time, the spliced steel pipes are transported to the water surface through a special slide device on land. There is currently a pipeline slide device that uses a steel pipe pile foundation plus a steel beam platform plus a steel slide beam. The disadvantages of this technology are low construction efficiency, large corrosion damage to the outside of the pipeline and high safety risks. Because the pipeline is slowly moved from the welding platform to the glide path and then to the water surface through jacks and wire ropes, the contact between the steel pipe and the steel platform during the process causes great corrosion damage to the outside of the pipeline, and the steel slide trolley is prone to fall off the slide beam during the descent, causing safety and quality accidents. For this reason, we propose a large-diameter deep-sea discharge steel pipe launching slide system. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a large-diameter deep-sea discharge steel pipe launching slide system. A plant area is built in a suitable coastal area. The plant area is mainly divided into four functional areas: living and office area, material stacking area, transfer area and assembly and pipe laying area. The material stacking area is used to stack pipe fittings and transfer them to the assembly and pipe laying area by the lifting equipment in the transfer area. In the assembly and pipe laying area, reinforced concrete support walls and concrete slide beams are used as the support and sliding structure of the pipe fittings. At the same time, the pipe fitting slide is divided into a single slide and a double slide structure design, so that after the pipe fittings are hoisted and placed, the connection is just at the top of the double slide, which is convenient for welding and painting operations. Rubber sheet layers and fiber cloth layers are laid on the top of the reinforced concrete support walls and concrete slide beams. Rubber sheets and fiber cloth are used as buffers to reduce the wear on the paint surface during the pipe laying process. When the pipe fittings complete the welding and painting operations in the welding area and the painting area, the winch A and winch B are connected to the pipe segment through corresponding pulleys and wire rope structures respectively. Winch A serves as the power output component for pipe laying, and uses wire ropes and guide pulley groups to provide downward force for the pipe segment. Winch B serves as the resistance component for pipe laying, and uses wire ropes and fixed pulleys to provide resistance for the pipe segment to slide downward, so that the pipe segment maintains a low and slow slide during the launching process. Compared with the existing launching slide system, reinforced concrete support walls and concrete slide beams are used as the system platform for large-diameter, long-distance, heavy-loaded steel pipes to enter the sea from land. At the same time, rubber sheets and fiber cloth are used as the key measures to protect the protective layer during the descent of the pipeline. With the help of winches and pulley structures of different tonnages, the launching speed of the pipeline is controlled. The overall construction cost is lower than the existing steel slide system. The combination of various components can effectively protect the outer anti-corrosion layer of the steel pipe and avoid wear. The quality of the pipe segment is guaranteed, while improving construction efficiency and reducing construction risks.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A large-diameter deep-sea discharge steel pipe launching slide system includes a living and office area, a material stacking area, a transfer area and an assembly and pipe-laying area. The assembly and pipe-laying area is constructed along the coast, and the transfer area is located between the material stacking area and the assembly and pipe-laying area. The living and office area is located on the side of the transfer area. The main components of the assembly and pipe-laying area include reinforced concrete supporting walls and concrete slide beams. The assembly and pipe-laying area is interspersed with reinforced concrete supporting walls, and concrete slide beams are built on the end of the reinforced concrete supporting wall facing the sea surface. The assembly and pipe-laying area is provided with winches A at intervals between the reinforced concrete supporting walls, and there are four groups of winches A. The assembly and pipe-laying area is provided with winches B at intervals between the winches A, and there are two groups of winches B.

[0007] Preferably, the foundation part of the assembly pipe-laying area includes a sandy soil layer, a supporting cushion layer and a supporting foundation. The sandpaper soil layer is laid on the side of the embankment slope away from the sea surface. A supporting cushion layer is laid on the top of the sandpaper soil layer and a supporting foundation is built on the top of the supporting cushion layer. The reinforced concrete supporting wall is built on the top of the supporting foundation. The sandy soil layer, the supporting cushion layer and the supporting foundation, in conjunction with the internal steel bars, play a bearing role on the reinforced concrete supporting wall and the concrete slideway beam, thereby ensuring their structural strength.

[0008] Preferably, an arc-shaped corner is built at the connection between the end of the reinforced concrete supporting wall and the end of the concrete slide beam, and the top of the reinforced concrete supporting wall and the concrete slide beam are both paved with a rubber sheet layer, and the surface of the rubber sheet layer is both paved with a fiber cloth layer; the arc-shaped corner structure can make the pipe section smoother when passing through the connection between the end of the reinforced concrete supporting wall and the end of the concrete slide beam, the rubber sheet layer is adhered to the top surface of the reinforced concrete supporting wall and the concrete slide beam with an epoxy resin adhesive, and the edges can be fixed with stainless steel strips and expansion bolts as needed, the fiber cloth layer and the rubber sheet layer are connected by a hot pressing composite process to form an overall buffer structure, and the rubber sheet and the fiber cloth cooperate to play a buffering and protective role to avoid wear on the paint surface of the pipe fittings.

[0009] Preferably, a guide pulley group is provided between the reinforced concrete support walls and at a position corresponding to the winch A, and the winch A is connected to the steel pipe through a wire rope and a guide pulley group. A fixed pulley is provided between the reinforced concrete support walls and at a position corresponding to the winch B, and the winch B is connected to the steel pipe through a wire rope and a fixed pulley. The winch A is a 10-ton winch and its matching wire rope has a diameter of 28 mm, and the winch B is a 15-ton winch and its matching wire rope has a diameter of 36 mm. The winch A and the winch B are respectively connected to the pipe section through matching pulley structures and wire ropes, and cooperate with each other to realize the slow launching of the pipe section under stable and controllable conditions.

[0010] Preferably, the assembly pipe placement area is sequentially provided with an assembling area, a welding area and a painting area. The assembling area is located on the side of the assembly pipe placement area away from the sea surface, the painting area is located on the side of the assembly pipe placement area close to the sea surface, and the welding area is located between the assembling area and the painting area. The assembling area is mainly used for the preliminary support and positioning of each pipe fitting, the welding area is used for welding and assembly operations at the joints between the pipe fittings, and the painting area is used to paint the outer periphery of the welded pipe section.

[0011] Preferably, the construction and operation process of the large-diameter deep-sea discharge steel pipe launching slide system includes the following steps:

[0012] S1. Site construction is carried out at a suitable location along the coast. The soil near the embankment slope along the coast is generally silty. The site is first excavated and replaced, and sea sand is used to replace the silty soil. After the replacement is completed, water is poured to compact it. The cushion layer is laid and compacted, and then concrete is poured to carry out the construction of living and office areas, material stacking areas, transfer areas and supporting projects. The material stacking area uses sleepers or strip concrete pads as raising components to elevate and store materials. The bottom of the assembly and pipe laying area is backfilled with a sandy soil layer. A supporting cushion layer is laid on the top of the sandy soil layer. Then the supporting foundation is poured and a reinforced concrete supporting wall and a concrete slide beam are built on the top of the supporting foundation. The end of the concrete slide beam extends to the sea surface and an arc angle is built at the connection between the concrete slide beam and the end of the reinforced concrete supporting wall. The slide structure at both ends of the assembly and pipe laying area adopts a single slide structure design, and the slide structure between the single slide structures at both ends adopts a double slide structure design.

[0013] S2. Lay a rubber sheet layer on top of the concrete slideway beam and the reinforced concrete support wall, and lay a fiber cloth layer on top of the rubber sheet layer. The rubber sheet layer and the fiber cloth layer work together to form a buffer structure to prevent damage to the anti-corrosion layer of the pipe fittings. Four 10-ton winches A and two 15-ton winches B are fixed by ground bulls between the reinforced concrete support walls. The installation position of winch A is equipped with a guide pulley group and a 28mm diameter steel wire rope. The installation position of winch B is equipped with a fixed pulley and a 36mm diameter steel wire rope. The connection between the steel wire rope and the pipe fitting is wrapped with a 5mm thick rubber sheet to prevent damage to the paint surface.

[0014] S3. The pipes to be welded are 20m in length and 2.7m in diameter. They are usually stored on top of the raised components in the stockpiling area. The transfer area is equipped with crawler cranes, which are used to lift the pipes to be assembled. The distance between the reinforced concrete support walls is preset according to the specifications of the pipes. The side widths of the double-slide and single-slide structures are both 2m. The distance between adjacent double-slide structures is 18m, and the distance between the double-slide structure and the end single-slide structure is 17m.

[0015] S4. During assembly, the crawler crane moves the pipes in the stockpiling area to the assembly area inside the pipe laying area. When placing the pipes, the joints between the adjacent ends of the pipes are aligned with the double slide structure. At the same time, the ends of the pipes at both ends are overlapped on the top of the single slide structure. The pipe joints are welded inside the welding area. 12 sets of pipes are assembled in a single operation. The length of the pipe section formed after welding is 240m. The pipe sections are painted in the painting area and tied with steel wire ropes. When laying the pipes, Four winches A are used in conjunction with guide pulley groups and wire ropes as the forward power structure to roll the pipe to the connection between the reinforced concrete support wall and the concrete slide beam. Two winches B are used in conjunction with fixed pulleys and wire ropes as pipe-releasing resistance. By controlling the operation of winches A and B, the pipe section slides slowly along the arc angle position and slides down along the concrete slide beam, sliding the pipe section down to the sea surface. When the pipe section floats up after the draft, the wire rope is untied and recovered to complete the steel pipe launching operation.

[0016] The beneficial effects of the present invention are as follows:

[0017] A factory area is built in a suitable coastal area. The factory area is mainly divided into four functional areas: living and office area, stacking area, transfer area and assembly and pipe laying area. The stacking area is used to stack pipes and transfer them to the assembly and pipe laying area by the lifting equipment in the transfer area. In the assembly and pipe laying area, reinforced concrete support walls and concrete slide beams are used as the support and sliding structure for pipes. At the same time, the pipe slide is divided into single slide and double slide structure design, so that after the pipes are hoisted and placed, the connection is just at the top of the double slide, which is convenient for welding and painting operations. Rubber sheet layers and fiber cloth layers are laid on the top of the reinforced concrete support walls and concrete slide beams. Rubber sheets and fiber cloth are used as buffers to reduce the wear on the paint surface during the pipe laying process. When the pipes complete the welding and painting operations in the welding area and the painting area, winch A and winch B respectively pass through the corresponding pulley and wire rope structure Connected to the pipe segment, winch A serves as the power output component for pipe laying, and uses wire rope and guide pulley group to provide downward force for the pipe segment. Winch B serves as the resistance component for pipe laying, and uses wire rope and fixed pulley to provide resistance for the pipe segment to slide downward, so that the pipe segment maintains a low and slow slide during the launching process. Compared with the existing launching slide system, reinforced concrete support walls and concrete slide beams are used as the system platform for large-diameter, long-distance, heavy-loaded steel pipes to enter the sea from land. At the same time, rubber sheets and fiber cloth are used as the key measures to protect the protective layer during the descent of the pipeline. With the help of winches and pulley structures of different tonnages, the launching speed of the pipeline is controlled. The overall construction cost is lower than the existing steel slide system. The combination of various components can effectively protect the outer anti-corrosion layer of the steel pipe and avoid wear. The quality of the pipe segment is guaranteed, while improving construction efficiency and reducing construction risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a schematic diagram of the overall layout structure of a large-diameter deep-sea discharge steel pipe launching slide system of the present invention.

[0019] Figure 2 A large-diameter deep-sea discharge steel pipe launching slide system of the present invention Figure 1 Schematic diagram of the BB cross-section structure.

[0020] Figure 3 A large-diameter deep-sea discharge steel pipe launching slide system of the present invention Figure 1 Schematic diagram of the CC cross-section structure.

[0021] Figure 4 The figure is a side structural diagram of a slideway of a large-diameter deep-sea discharge steel pipe launching slideway system according to the present invention.

[0022] Figure 5 This is a schematic diagram of the top plan view of a single slide structure of a large-diameter deep-sea discharge steel pipe launching slide system of the present invention.

[0023] Figure 6 This is a schematic diagram of the top plan view of the double slide structure of a large-diameter deep-sea discharge steel pipe launching slide system of the present invention.

[0024] Figure 7 The figure is a schematic cross-sectional structure diagram of the reinforced concrete support wall and concrete slide beam of a large-diameter deep-sea discharge steel pipe launching slide system of the present invention.

[0025] In the figure: 1. Living and office area; 2. Material stacking area; 3. Transfer area; 4. Assembly and pipe laying area; 5. Reinforced concrete support wall; 501. Sandy soil layer; 502. Support cushion layer; 503. Support foundation; 6. Concrete slide beam; 7. Arc angle; 8. Rubber sheet layer; 801. Fiber cloth layer; 9. Winch A; 901. Guide pulley group; 10. Winch B; 1001. Fixed pulley; 11. Assembly area; 12. Welding area; 13. Painting area. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings. It is apparent that the embodiments described are only some, not all, of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0027] A large-diameter deep-sea discharge steel pipe launching slide system includes a living and office area 1, a stockpiling area 2, a transfer area 3 and an assembly pipe release area 4. The assembly pipe release area 4 is built along the coast and the transfer area 3 is located between the stockpiling area 2 and the assembly pipe release area 4. The living and office area 1 is located on the side of the transfer area 3. The main components of the assembly pipe release area 4 include reinforced concrete supporting walls 5 and concrete slide beams 6. The assembly pipe release area 4 is interspersed with reinforced concrete supporting walls and the ends of the reinforced concrete supporting walls 5 are built with concrete slide beams 6 facing the sea surface. The assembly pipe release area 4 is located between the reinforced concrete supporting walls 5 and has winches A9 at intervals, and there are four groups of winches A9. The assembly pipe release area 4 is located between the winches A9 and has winches B10 at intervals, and there are two groups of winches B10.

[0028] Among them, the foundation part of the assembly and pipe placement area 4 includes a sandy soil layer 501, a supporting cushion layer 502 and a supporting foundation 503. The sandpaper soil layer is laid on the side of the embankment away from the sea surface. The supporting cushion layer 502 is laid on the top of the sandpaper soil layer and the supporting foundation 503 is built on the top of the supporting cushion layer 502. The reinforced concrete support wall 5 is built on the top of the supporting foundation 503; through the sandy soil layer 501, the supporting cushion layer 502 and the supporting foundation 503, in conjunction with the internal steel bars, the reinforced concrete support wall 5 and the concrete slide beam 6 play a bearing role, ensuring their structural strength.

[0029] Among them, an arc-shaped corner 7 is built at the connection between the end of the reinforced concrete supporting wall 5 and the end of the concrete slide beam 6, and a rubber sheet layer 8 is laid on the top of the reinforced concrete supporting wall 5 and the concrete slide beam 6, and a fiber cloth layer 801 is laid on the surface of the rubber sheet layer 8; the arc-shaped corner 7 structure can make the pipe section smoother when passing through the connection between the end of the reinforced concrete supporting wall 5 and the end of the concrete slide beam 6, and the arc-shaped corner 7 structure can make the pipe section smoother when passing through the connection between the end of the reinforced concrete supporting wall 5 and the end of the concrete slide beam 6. The rubber sheet layer 8 is adhered to the top surface of the reinforced concrete supporting wall 5 and the concrete slide beam 6 by epoxy resin adhesive, and the edges can be fixed with stainless steel strips and expansion bolts as needed. The fiber cloth layer 801 and the rubber sheet 8 layer are connected by a hot pressing composite process to form an overall buffer structure. The rubber sheet and fiber cloth cooperate to play a buffering and protective role to avoid wear on the paint surface of the pipe fittings.

[0030] Among them, a guide pulley group 901 is provided between the reinforced concrete support walls 5 and at the position corresponding to the winch A9. The winch A9 is connected to the steel pipe through a steel wire rope and the guide pulley group 901. A fixed pulley 1001 is provided between the reinforced concrete support walls 5 and at the position corresponding to the winch B10. The winch B10 is connected to the steel pipe through a steel wire rope and the fixed pulley 1001. The winch A9 is a 10-ton winch and its matching steel wire rope has a diameter of 28 mm. The winch B10 is a 15-ton winch and its matching steel wire rope has a diameter of 36 mm. The winch A9 and the winch B10 are respectively connected to the pipe section through matching pulley structures and steel wire ropes, and cooperate with each other to realize the slow launching of the pipe section under stable and controllable conditions.

[0031] Among them, the assembly and pipe placement area 4 is sequentially provided with an assembling area 11, a welding area 12 and a painting area 13. The assembling area 11 is located on the side of the assembly and pipe placement area 4 away from the sea surface, the painting area 13 is located on the side of the assembly and pipe placement area 4 close to the sea surface, and the welding area 12 is located between the assembling area 11 and the painting area 13. The interior of the assembling area 11 is mainly used for the preliminary support and positioning of each pipe fitting, the welding area 12 is used for welding and assembly operations at the joints between the pipe fittings, and the painting area 13 is used to paint the outer periphery of the welded pipe section.

[0032] The construction and operation process of the large-diameter deep-sea discharge steel pipe launching slide system includes the following steps:

[0033] S1. Site construction is carried out at a suitable coastal location. The soil near the embankment slope along the coast is generally silty. The site is first excavated and replaced, and the silty soil is replaced with sea sand. After the replacement is completed, water is poured to compact it. The cushion layer is laid and compacted, and then concrete is poured to carry out the construction of the living and office area 1, the stockpiling area 2, the transfer area 3 and supporting projects. The stockpiling area 2 uses sleepers or strip concrete pads as padding components to elevate the materials for storage. The bottom of the assembly and pipe placement area 4 is backfilled with a sandy soil layer 501, and a supporting cushion layer 502 is laid on the top of the sandy soil layer 501. Then the supporting foundation 503 is poured and a reinforced concrete supporting wall 5 and a concrete slide beam 6 are built on the top of the supporting foundation 503. The end of the concrete slide beam 6 extends to the sea surface and an arc angle 7 is built at the connection between the concrete slide beam 6 and the end of the reinforced concrete supporting wall 5. The slide structures at both ends of the assembly and pipe placement area 4 adopt a single slide structure design, and the slide structure between the single slide structures at both ends adopts a double slide structure design.

[0034] S2. Lay a rubber sheet layer 8 on the top of the concrete slideway beam 6 and the reinforced concrete support wall 5, and lay a fiber cloth layer 801 on the top of the rubber sheet layer 8. The rubber sheet layer 8 and the fiber cloth layer 801 cooperate to form a buffer structure to avoid damaging the anti-corrosion layer of the pipe fittings. Four 10-ton winches A9 and two 15-ton winches B10 are fixed by ground bulls between the reinforced concrete support walls 5. The installation position of the winch A9 is equipped with a guide pulley group 901 and a 28 mm diameter steel wire rope. The installation position of the winch B10 is equipped with a fixed pulley 1001 and a 36 mm diameter steel wire rope. The connection between the steel wire rope and the pipe fitting is wrapped with a 5 mm thick rubber sheet to avoid damage to the paint surface.

[0035] S3. The specifications of the pipes to be welded are 20m in length and 2.7m in diameter. They are usually stored on top of the raised components in the stockpiling area 2. The transfer area 3 is equipped with a crawler crane, which is used to lift the pipes to be assembled. The distance between the reinforced concrete support walls 5 is preset according to the specifications of the pipes. The side widths of the double slide and single slide structures are both 2m. The distance between adjacent double slide structures is 18m, and the distance between the double slide structure and the end single slide structure is 17m.

[0036] S4. During assembly, the crawler crane moves the pipes in the stockpiling area 2 to the assembly area 11 inside the pipe laying area 4. When placing the pipes, the joints between the adjacent ends of the pipes are aligned with the double slide structure. At the same time, the ends of the pipes at both ends are overlapped on the top of the single slide structure. The pipe joints are welded inside the welding area 12. 12 sets of pipes are assembled in a single operation. The length of the pipe section formed after welding is 240m. The pipe sections are painted in the coating area 13 and tied with steel wire ropes. When laying the pipes, 4 A winch A9 cooperates with the guide pulley group 901 and the wire rope as the forward power structure to roll the pipe to the connection between the reinforced concrete support wall 5 and the concrete slide beam 6. Two winches B10 cooperate with the fixed pulley 1001 and the wire rope as the pipe release resistance. By controlling the operation of winches A9 and winches B10, the pipe section slides slowly along the arc angle 7 and slides down along the concrete slide beam 6, sliding the pipe section down to the sea surface. When the pipe section floats up due to the draft, the wire rope is untied and recovered to complete the steel pipe launching operation.

[0037] In summary: the present invention provides a large-diameter deep-sea discharge steel pipe launching slide system, which builds a factory area in a suitable coastal area. The factory area is mainly divided into four functional areas: living and office area 1, stacking area 2, transfer area 3 and assembly and pipe laying area 4. The stacking area 2 is used to stack pipes and transfer them to the assembly and pipe laying area 4 by the lifting equipment of the transfer area 3. In the assembly and pipe laying area 4, reinforced concrete support walls 5 and concrete slide beams 6 are used as the support and sliding structure of the pipes. At the same time, the pipe slide is divided into a single slide and a double slide structure design, so that after the pipes are lifted and placed, the connection is just at the top of the double slide, which is convenient for welding and painting operations. A rubber plate layer 8 and a fiber cloth layer 801 are laid on the top of the reinforced concrete support wall 5 and the concrete slide beam 6. The rubber plate and fiber cloth are used as buffers to reduce the wear on the paint surface during the pipe laying process. When the pipes complete the welding and painting operations in the welding area 12 and the painting area 13, the winch A9 and the winder The winch B10 is connected to the pipe segment through the corresponding pulley and wire rope structure. The winch A9 serves as the pipe-releasing power output component, using the wire rope and guide pulley group 901 to provide downward force for the pipe segment. The winch B10 serves as the pipe-releasing resistance component, using the wire rope and fixed pulley 1001 to provide resistance for the pipe segment to slide downward, so that the pipe segment maintains a low and slow downward slide during the launching process. Compared with the existing launching slide system, reinforced concrete support walls 5 and concrete slide beams 6 are used as the system platform for large-diameter, long-distance, and heavy-load steel pipes to enter the sea from land. At the same time, rubber sheets and fiber cloth are used as the key measures to protect the protective layer during the descent of the pipeline. With the help of winches and pulley structures of different tonnages, the launching speed of the pipeline is controlled. The overall construction cost is lower than that of the existing steel slide system. The coordination of various components can effectively protect the outer anti-corrosion layer of the steel pipe and avoid wear. The quality of the pipe segment is guaranteed, while improving construction efficiency and reducing construction risks.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A large-caliber deep-sea discharge steel pipe launching slide system, comprising a living and office area (1), a material stacking area (2), a transfer area (3) and an assembly and pipe laying area (4), characterized in that: The assembly and pipe laying area (4) is constructed along the coast and the transfer area (3) is arranged between the stockpiling area (2) and the assembly and pipe laying area (4). The living and office area (1) is arranged on the side of the transfer area (3). The main components of the assembly and pipe laying area (4) include reinforced concrete supporting walls (5) and concrete slide beams (6). The assembly and pipe laying area (4) is intermittently built with reinforced concrete supporting walls and the end of the reinforced concrete supporting wall (5) is built with a concrete slide beam (6) facing the sea surface. The assembly and pipe laying area (4) is intermittently provided with winches A (9) between the reinforced concrete supporting walls (5), and there are four groups of winches A (9). The assembly and pipe laying area (4) is intermittently provided with winches B (10) between the winches A (9), and there are two groups of winches B (10).

2. A large-diameter deep-sea discharge steel pipe launching slide system according to claim 1, characterized in that: The foundation part of the assembly pipe-laying area (4) comprises a sandy soil layer (501), a supporting cushion layer (502) and a supporting foundation (503); the sandpaper soil layer is laid on the side of the embankment slope away from the sea surface; the supporting cushion layer (502) is laid on the top of the sandpaper soil layer, and the supporting foundation (503) is built on the top of the supporting cushion layer (502); the reinforced concrete supporting wall (5) is built on the top of the supporting foundation (503).

3. The large-diameter deep-sea discharge steel pipe launching slide system according to claim 2, characterized in that: An arc-shaped corner (7) is built at the connection between the end of the reinforced concrete supporting wall (5) and the end of the concrete slide beam (6); the tops of the reinforced concrete supporting wall (5) and the concrete slide beam (6) are both paved with a rubber sheet layer (8), and the surface of the rubber sheet layer (8) is both paved with a fiber cloth layer (801).

4. A large-diameter deep-sea discharge steel pipe launching slide system according to claim 3, characterized in that: A guide pulley group (901) is provided between the reinforced concrete supporting walls (5) and at a position corresponding to the hoist A (9). The hoist A (9) is connected to a steel pipe via a steel wire rope and the guide pulley group (901). A fixed pulley (1001) is provided between the reinforced concrete supporting walls (5) and at a position corresponding to the hoist B (10). The hoist B (10) is connected to a steel pipe via a steel wire rope and the fixed pulley (1001). The hoist A (9) is a 10-ton hoist and its matching steel wire rope has a diameter of 28 mm. The hoist B (10) is a 15-ton hoist and its matching steel wire rope has a diameter of 36 mm.

5. The large-diameter deep-sea discharge steel pipe launching slide system according to claim 4, characterized in that: The assembly pipe placing area (4) is provided with an assembling area (11), a welding area (12) and a painting area (13) in sequence. The assembly area (11) is located on a side of the assembly pipe placing area (4) away from the sea surface. The painting area (13) is provided on a side of the assembly pipe placing area (4) close to the sea surface. The welding area (12) is provided between the assembly area (11) and the painting area (13).

6. The large-diameter deep-sea discharge steel pipe launching slide system according to claim 5, characterized in that: The construction and operation process of the large-diameter deep-sea discharge steel pipe launching slide system includes the following steps: S1. Construction is carried out at a suitable location along the coast. The soil near the embankment slope along the coast is generally muddy. First, the site is excavated and replaced. The muddy soil is replaced with sea sand. After the replacement is completed, water is poured and compacted. The cushion layer is laid and compacted. Then concrete is poured and the construction of the living and office area (1), the stacking area (2), the transfer area (3) and the supporting projects is carried out. The stacking area (2) uses sleepers or strip concrete pads as the raising components to raise the materials for storage. The bottom of the assembly pipe area (4) is backfilled with a sandy soil layer (501). In the sandy soil layer (5 01), a supporting cushion layer (502) is laid on the top of the supporting foundation (503), and then a supporting foundation (503) is poured and a reinforced concrete supporting wall (5) and a concrete slide beam (6) are built on the top of the supporting foundation (503). The end of the concrete slide beam (6) extends to the sea surface and an arc angle (7) is built at the connection between the concrete slide beam (6) and the end of the reinforced concrete supporting wall (5). The slide structures at both ends of the assembly pipe release area (4) adopt a single slide structure design, and the slide structure between the single slide structures at both ends adopts a double slide structure design. S2. A rubber sheet layer (8) is laid on the top of the concrete slideway beam (6) and the reinforced concrete support wall (5), and a fiber cloth layer (801) is laid on the top of the rubber sheet layer (8). The rubber sheet layer (8) and the fiber cloth layer (801) cooperate to form a buffer structure to avoid damaging the anti-corrosion layer of the pipe fittings. Four 10-ton winches A (9) and two 15-ton winches B (10) are fixed between the reinforced concrete support walls (5) by ground bulls. The installation position of the winch A (9) is equipped with a guide pulley group (901) and a steel wire rope with a diameter of 28 mm. The installation position of the winch B (10) is equipped with a fixed pulley (1001) and a steel wire rope with a diameter of 36 mm. The connection position between the steel wire rope and the pipe fitting is wrapped with a 5 mm thick rubber sheet to avoid damage to the paint surface. S3. The pipes to be welded have a length of 20m and a diameter of 2.7m. They are usually stored on top of the raised assembly in the stockpiling area (2). The transfer area (3) is equipped with a crawler crane, which is used to lift the pipes to be assembled. The spacing between the reinforced concrete support walls (5) is preset according to the specifications of the pipes. The side widths of the double slide and single slide structures are both 2m. The spacing between adjacent double slide structures is 18m, and the spacing between the double slide structure and the end single slide structure is 17m. S4. During assembly, the crawler crane equipment moves the pipes in the stockpiling area (2) to the assembly area (11) inside the pipe laying area (4). When the pipes are placed, the joints between the adjacent ends of the pipes are aligned with the double slide structure. At the same time, the ends of the pipes at both ends are overlapped on the top of the single slide structure. The pipe joints are welded inside the welding area (12). 12 sets of pipes are assembled in a single operation. The length of the pipe section formed after welding is 240m. The pipe section is painted in the coating area (13) and tied with the wire rope. When laying the pipes, 4 winches A are used. (9) The guide pulley group (901) and the steel wire rope are used as the forward power structure to roll the pipe to the connection between the reinforced concrete support wall (5) and the concrete slide beam (6). Two winches B (10) are used in conjunction with the fixed pulley (1001) and the steel wire rope as the pipe release resistance. By controlling the operation of the winches A (9) and the winches B (10), the pipe section slides slowly along the arc angle (7) and slides down along the concrete slide beam (6), and the pipe section slides down to the sea surface. When the pipe section floats up after the draft, the steel wire rope is untied and recovered to complete the steel pipe launching operation.

Images