Pipeline under pipe flow line in mountainous area

Abstract

The application discloses a pipeline lowering pipeline in mountainous areas, which is arranged in a dug pipeline ditch and sequentially comprises reciprocating platforms, welding platforms, flaw detection platforms and joint repairing platforms from low slopes to high slopes, intervals between the platforms are matched with pipeline lengths, pipeline supports with conveying rollers and pipe supports are arranged in the intervals and the pipeline ditch, and the inner wall of the pipe support is provided with a one-way locking mechanism; a winch is arranged on the top of the slope, and a steel wire rope of the winch is connected with a front end traction head of the pipeline.The method comprises the following steps: digging the pipeline ditch and arranging the device, sending the pipeline to the welding platforms through the reciprocating platforms, sequentially completing welding, flaw detection and joint repairing, and realizing continuous pipeline lowering through traction of the winch.The application solves the problems of site occupation and inconvenience in mountainous construction, improves the efficiency, reduces the site occupation and significantly reduces the risk in the construction process.

Description

Technical Field

[0001] This application belongs to the field of pipeline construction technology, specifically relating to a pipeline drainage system for mountainous areas. Background Technology

[0002] Construction period directly translates to cost; prolonged construction periods lead to a sharp increase in construction costs. Site conditions directly impact efficiency; a disorganized site results in complex equipment movement and reduced operational efficiency. Pipeline construction sites should fully utilize road length while minimizing width occupation. Current technologies present site occupation issues for pipeline construction in plains areas, a problem that is even more severe in mountainous terrain.

[0003] In existing technologies, pipeline construction in mountainous areas faces complex environments with varied topography, significant small-basin climate variations, and limited pipeline passage space. Steep slopes and gullies are common, construction work zones are discontinuous, and the construction of accompanying roads and access roads is difficult. Rugged roads also hinder the entry and relocation of large machinery. Furthermore, the undulating terrain and frequent route changes in mountainous areas significantly increase the difficulty of pipeline transportation, laying, and construction compared to pipelines in plains areas.

[0004] Compared to pipeline construction in plains areas, pipeline construction in mountainous regions involves more rocky terrain and areas without road access. The main challenges in construction are the entry of construction equipment, pipe transportation and laying, trench backfilling, and hydraulic engineering protection. If the pipeline laying process can be streamlined, these challenges will be mitigated. However, current technologies lack a streamlined production line for pipeline laying in mountainous areas. Utility Model Content

[0005] This application provides a pipeline laying line for mountainous areas, which solves the problems of site occupation and construction inconvenience in mountainous areas, and significantly reduces the safety risks during construction.

[0006] The technical solution of this application is as follows: A pipeline laying line for mountainous areas, wherein the pipeline is installed in a pre-excavated trench in the mountainous area, and the pipeline is equipped with a laying device from low slope to high slope, the laying device consisting of the following components connected in series: A reciprocating platform, wherein the reciprocating platform conveys pipeline units to the production line through reciprocating movement; The welding platform, with its spacing from the reciprocating platform matching the pipeline length, includes a connecting unit and a welding unit. The connecting unit is used to align the beginning and end of two continuous pipelines, to weld fittings to the pipeline, and to weld the joints between the beginning and end of the two continuous pipelines. The fittings include a traction head located at the front end of the first pipeline section. The flaw detection platform is spaced from the welding platform and the distance between them is matched with the pipeline length. The flaw detection platform is used to inspect the welding quality at the beginning and end of the pipeline. A jointing platform is used to wrap anti-corrosion material around the beginning and end of pipelines. The production line is equipped with the following features in the intervals between the reciprocating platform, welding platform, flaw detection platform, and jointing platform, as well as inside the trench above the laying device: The pipeline bracket includes a support column embedded in the pipeline trench and a bracket platform fixedly connected to the support column. The bracket platform is provided with a conveying roller and a pipe support in sequence along the pipeline movement direction. The pipe support has a cylindrical cavity, and the inner wall of the cavity is provided with a one-way locking mechanism. The trench is located at the top of the slope: A winch having a wire rope connected to the traction head.

[0007] Furthermore, the reciprocating platform includes a moving platform, a lead screw passing through the center of the moving platform, and limiting rods arranged on both sides of the lead screw and passing through the moving platform. The lead screw is driven by a motor to reciprocate the moving platform. The moving platform is provided with a pipeline support and a baffle located behind the pipeline support.

[0008] Furthermore, a limiting platform is provided after the patching platform. The limiting platform includes a bracket and a locking device. The locking device has a sleeve that allows the pipeline to pass through and a tightening component for clamping the sleeve. The pipeline laying method for mountainous areas based on the above-mentioned pipeline system includes the following steps: S01) Excavate a pipe trench, and install a laying device in the trench from low slope to high slope; S02) The reciprocating platform is reset to its initial position, the pipeline unit is placed in the pipeline support, the motor of the control screw is started, and the first pipeline is sent into the welding platform. S03) When the first pipeline enters the welding platform, a traction head is welded to the front end of the pipeline, and the wire rope is fixed to the traction head. S04) Start the winch to pull the first pipeline to the flaw detection platform for welding quality inspection. At the same time, the reciprocating platform returns to the initial position to load the second pipeline and moves the second pipeline to the welding platform so that the front end of the second pipeline is aligned with the tail end of the first pipeline along the central axis and welded together by the welding unit. S05) Start the winch to pull the first pipeline into the jointing platform. At the same time, the front end of the second pipeline enters the flaw detection platform for welding quality inspection. Meanwhile, the reciprocating platform returns to the initial position to load the third pipeline and moves it to the welding platform. The tail end of the second pipeline is welded to the front end of the third pipeline on the welding platform through the welding unit. S06) Continue pulling the first pipeline. When the front end of the fourth pipeline is aligned with the tail end of the third pipeline, tighten the fastener. When the welding of the front end of the fourth pipeline with the tail end of the third pipeline is completed, loosen the fastener and continue pulling the first pipeline so that the first pipeline passes through the fastener and connects with the first pipeline bracket. S07) Process each pipeline sequentially according to steps S04)~S06). During the processing, control the start or stop of the production line and winch according to the pipeline processing progress so that the pipeline connection progress matches the traction distance.

[0009] Furthermore, once all pipelines have reached their designated positions, the conveyor rollers are cut and the trench is backfilled.

[0010] Due to the adoption of the above technical solution, the beneficial effects of this application are as follows: 1. The assembly line in this application completes the entire pipeline processing process directly within the trench. This technical solution significantly reduces the land area required for construction in mountainous terrain. This application fully utilizes the internal space of the excavated trench, significantly reducing the reserved construction space on both sides of the trench excavation. Reducing the construction space drastically decreases the area of ​​land requisitioned in mountainous areas and shortens the clearing time.

[0011] 2. This application reduces safety risks during construction. It simplifies pipeline transportation, reducing workload and risks. On steep slopes or in narrow sections, excavation can easily lead to slope instability and landslides. Mountainous terrain presents limited space and a poor welding environment, increasing the risk of weld defects and leaks. During mountain construction, large machinery (such as pipe-laying machines and excavators) faces risks of slippage, overturning, and collisions. Narrow and rugged mountain roads increase the risk of pipe rolling and overturning accidents during transport. The streamlined design in this application improves the construction environment. After trench excavation, personnel only need to perform pipe laying, welding, flaw detection, and joint repair at the front end of the trench, reducing the need for large machinery, shortening pipe transportation, and significantly reducing the time spent on hazardous procedures.

[0012] 3. In this application, a reciprocating platform is used to transport pipelines. The reciprocating platform is small in size, making it easy to place in a pipe trench. Since the reciprocating platform is inclined, the pipeline would slide down if no baffle is installed. Therefore, the baffle can prevent the pipeline from sliding down and push the pipeline into the welding platform.

[0013] 4. This application directly uses the winch at the top of the slope as both processing and traction equipment. In this application, the welding platform, joint repair platform, and flaw detection platform are all supported by mature existing technologies, which can significantly improve the connection quality of pipelines and avoid rework. This application innovatively utilizes the winch as equipment in the processing flow, controlling the processing progress through traction. Furthermore, this application combines the three processes of pipe laying, pipeline connection, and pipeline traction into one, thereby improving overall construction efficiency.

[0014] 5. This application integrates the various devices required for pipeline laying, thereby reducing the construction site occupation. The above advantages are even more significant in rugged mountainous areas. On the one hand, it can reduce the workload of mechanical equipment and improve construction efficiency; on the other hand, the integrated production line has a stronger adaptability to the site and can operate in more complex construction sites.

[0015] 6. During the lifting process in mountainous areas, constant vigilance is needed to prevent pipeline detachment. This application utilizes a triple anti-fall structure formed by steel wire ropes, one-way locking mechanisms in pipe supports, and tightening components, effectively preventing pipeline slippage after detachment from both overall and local perspectives. Specifically, the steel wire rope forms a continuous traction from the first pipeline, serving as a safety net against slippage. The one-way locking mechanism only allows the pipeline to pass through the cavity in one direction. If the pipeline breaks and slips during traction, the preceding pipeline is still pulled by the steel wire rope, while the following pipeline is blocked by numerous one-way locking mechanisms. The one-way locking mechanisms in each cavity create a continuous blocking effect, thus preventing pipeline slippage. Moreover, the one-way locking mechanism covers the entire cavity; if the pipeline sways after slippage, the one-way locking mechanism also provides a stopping effect.

[0016] 7. This application is widely applicable. In mountainous areas, this application will still be applicable to construction projects that do not require trench excavation. Specifically, the support columns of this application can be directly fixed to the mountain surface, and the pipeline brackets serve as both construction tools and an integral part of the project, reducing construction costs. Construction can be carried out using the assembly line method described in this application. This method can significantly improve construction efficiency, eliminate the need for backfilling, and significantly reduce the degree of damage to the ecological environment, as well as lower subsequent soil and water conservation costs. The technical solution of this application is also applicable to plains areas. Attached Figure Description

[0017] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0018] Figure 1 This application provides a schematic diagram of a pipeline pipeline distribution line in a mountainous area; Figure 2 This is a front view of the reciprocating platform described in this application; Figure 3 This is a side view of the reciprocating platform described in this application; Figure 4 This is a top view of the reciprocating platform described in this application; Figure 5 This is a front view of the pipeline bracket described in this application; Figure 6 This is a side view of the pipeline bracket described in this application; Figure 7This is a top view of the pipeline bracket described in this application; Figure 8 This is a schematic diagram of the limiting platform in this application; In the attached diagram: 1. Laying device; 2. Reciprocating platform; 2-1. Lead screw; 2-2. Limiting rod; 2-3. Baffle; 2-4. Pipeline support; 2-5. Moving platform; 3. Welding platform; 4. Flaw detection platform; 5. Joint repair platform; 6. Pipeline bracket; 6-1. Support column; 6-2. Bracket platform; 6-3. Conveying roller; 6-4. Pipe support; 6-5. Cavity; 6-6. One-way locking mechanism; 7. Winch; 7-1. Wire rope; 8. Limiting platform; 8-1. Bracket; 8-2. Locking device; 8-3. Hoop; 8-4. Tightening component. Detailed Implementation

[0019] Based on the background technology described, as shown in the appendix Figure 1 As shown, this application provides a pipeline laying line, which is set in a pre-excavated trench in a mountainous area. The pipeline laying line is equipped with a laying device 1 from a low slope to a high slope, and the laying device 1 consists of the following components connected in series: Reciprocating platform 2, which serves as a conveyor pipeline unit for the assembly line through reciprocating movement; as shown in the attached figure. Figure 2 ~Appendix Figure 4 As shown, the reciprocating platform 2 transports the pipeline. The reciprocating platform 2 is small in size, making it easy to place in the pipe trench. Since the reciprocating platform 2 is inclined, the pipeline would slide down if the baffle 2-3 were not installed. Therefore, the baffle 2-3 can prevent the pipeline from sliding down and push the pipeline into the welding platform 3.

[0020] The welding platform 3 is spaced from the reciprocating platform 2 and the distance between them is matched with the length of the pipeline. The welding platform 3 includes a connecting unit and a welding unit. The connecting unit is used to align the beginning and end of two continuous pipelines and to weld fittings for the pipelines and weld the joints between the beginning and end of the two continuous pipelines. The fittings include a traction head set at the front end of the first section of the pipeline. The flaw detection platform 4 is spaced from the welding platform 3 and the distance between them is matched with the length of the pipeline. The flaw detection platform 4 is used to detect the welding quality at the beginning and end of the pipeline. The patching platform 5 is used to wrap anti-corrosion material around the beginning and end of the pipeline.

[0021] It should be noted that the flaw detection platform 4 and the joint repair platform 5 can be integrated. Since pipeline welding takes a relatively long time, while flaw detection and joint repair take a relatively short time, these two platforms can be located on opposite sides of the same position.

[0022] The production line is arranged in the intervals between the reciprocating platform 2, welding platform 3, flaw detection platform 4, and jointing platform 5, as well as inside the trench above the laying device 1, with the following features: The pipeline support 2-4 includes a support column 6-1 embedded in the pipeline trench and a bracket platform 6-2 fixedly connected to the support column 6-1. The bracket platform 6-2 is provided with a conveying roller 6-3 and a pipe support 6-4 in sequence along the pipeline movement direction. The pipe support 6-4 has a cylindrical cavity 6-5, and the inner wall of the cavity 6-5 is provided with a one-way locking mechanism 6-6. The trench is located at the top of the slope: The winch 7 has a wire rope 7-1 connected to the traction head.

[0023] In a preferred embodiment of this application, the reciprocating platform 2 includes a moving platform 2-5, a lead screw 2-1 passing through the center of the moving platform 2-5, and limiting rods 2-2 arranged on both sides of the lead screw 2-1 and passing through the moving platform 2-5. The lead screw 2-1 drives the moving platform 2-5 to reciprocate. The moving platform 2-5 is provided with a pipeline support 2-4 and a baffle 2-3 located behind the pipeline support 2-4. The baffle 2-3 prevents the pipeline from sliding downwards and pushes the pipeline forward. The limiting rods 2-2 can prevent lateral displacement caused by bumps during transportation.

[0024] It should be noted that the attached document is for reference only. Figure 3 The pipe support 6-4 consists of two semicircular arcs. In practice, the one-way locking mechanism 6-6 can be made of hard rubber. Due to the large traction force, the one-way locking mechanism 6-6 can be squeezed in the uphill direction during traction. In fact, in practice, the traction phase is not continuous traction; each processing step moves approximately one section of pipeline, so the possibility of falling is low.

[0025] The one-way locking mechanism 6-6 can be selected from, but is not limited to, flexible friction bushings with built-in helical teeth, inclined sliders, etc. The flexible friction bushing utilizes the deformation and friction of the flexible material for limiting movement. In specific implementations, the flexible bushing can be a cylindrical bushing made of high-friction, high-wear-resistant materials such as hard rubber, polyurethane, or wear-resistant nylon. The inner diameter of the bushing is slightly smaller than the outer diameter of the pipe, and the outer surface of the bushing has unidirectional inclined serrations or wavy textures. A rigid outer shell (pipe support 6-4) is installed outside the flexible bushing to constrain and support it. When the pipe advances (unlocked state), the advancing pipe compresses the inclined surface of the helical teeth, allowing free passage. When the pipe retracts (locked state), the retracting pipe engages with the helical teeth, generating friction, and the material deformation tightens the pipe. This type of one-way locking mechanism 6-6 is low-cost, can be mass-produced by injection molding or casting, and the flexible material will not scratch the outer anti-corrosion layer of the pipe during operation. In practical implementation, if the one-way locking mechanism 6-6 adopts an inclined slider type, the slider is made of a material with a high coefficient of friction and high wear resistance (such as polymers like hard rubber, hard alloy blocks, etc.). The inclined slider type one-way locking mechanism requires several grooves to be made on the inner wall of the tube support 6-4, with the depth of the grooves increasing from bottom to top. Sliders are embedded in these grooves. When the slider is at the bottom of the groove, the diameter of the space enclosed by the sliders is slightly smaller than the outer diameter of the pipeline. When the pipeline enters the cavity, it pushes the slider forward. The diameter of the space maintained by each slider gradually increases as the slider moves forward until it is slightly larger than the diameter of the pipeline. At this point, the pipeline can continue forward through the slider. Because the pipeline is continuous, the slider is always in contact with the pipeline, preventing the pipeline from sliding backward. However, the pipeline cannot slide backward. If the pipeline were to slide backward, it would need to squeeze the slider, but the groove below the slider is shallower. After the pipeline occupies the cavity space, the slider cannot move backward, and the two forces each other to squeeze, preventing the pipeline from sliding down.

[0026] As a preferred embodiment of this application, see the appendix. Figure 8 This application may add a limiting platform 8 after the patching platform 5. The limiting platform 8 includes a bracket 8-1 and a locking device 8-2. The locking device 8-2 has a sleeve 8-3 that allows the pipeline to pass through and a tightening member 8-4 that clamps the sleeve 8-3.

[0027] The pipeline laying assembly line provided in this application integrates all the devices required for pipeline laying, thereby reducing the construction site occupation. The above advantages are even more significant in rugged mountainous areas. On the one hand, it can reduce the workload of mechanical equipment and improve construction efficiency; on the other hand, the integrated assembly line has a stronger ability to adapt to the site and can operate in more complex construction sites.

[0028] The following are the methods for constructing underground pipelines in mountainous areas: S01) Excavate a pipe trench, and install a laying device in the trench from low slope to high slope; It should be noted that site leveling can be carried out before excavating the pipe trench, but site leveling does not mean flattening the site. It simply means creating a terrain suitable for placing the production line and pipelines. It can be sloping or flat, depending on the actual construction site.

[0029] S02) The reciprocating platform is reset to its initial position, the pipeline unit is placed in the pipeline support, the motor of the control screw is started, and the first pipeline is sent into the welding platform.

[0030] In practice, the pipelines are stored on one side of the reciprocating platform, and one pipeline is placed on the pipe support each time it is lowered. In this application, the initial position of the reciprocating platform is the pipeline storage location.

[0031] S03) When the first pipeline enters the welding platform, a traction head is welded to the front end of the pipeline, and the wire rope is fixed to the traction head.

[0032] In practical implementation, the distance between the reciprocating platform and the welding platform is determined based on the pipeline length. The welding platform, with its spacing from the pipeline frame matching the pipeline length, includes a connecting unit and a welding unit. The connecting unit aligns the ends of two continuous pipelines, serves as a welding fitting for the pipeline, and welds the joints between the ends of the two continuous pipelines. The fittings include a traction head located at the front end of the first pipeline section. The traction head is the component that connects to the traction device; for example, it can be a ring through which a steel wire rope passes to form a reliable connection. Before welding, the connecting unit needs to be used to align the centerline of the pipeline before welding. The connecting unit is existing technology and can utilize an external pipeline alignment tool. The reciprocating platform requires height adjustment during installation to ensure it is parallel to the uphill direction and the pipeline laying height. Therefore, the pipeline height at the laying device is basically consistent, and fine-tuning at the connecting unit using an alignment tool allows the ends of the two pipelines to be aligned. The welding unit can employ manual arc welding or automated welding equipment. In practice, the selection of the automated welding machine and welding materials depends on the pipe's bore diameter, wall thickness, and material. The automated welding machine is positioned in a fixed location to automatically complete the entire welding process, including adjusting welding parameters and moving the welding torch. When the pipeline moves to the welding unit, workers can assist with position adjustments or repositioning.

[0033] S04) Start the winch to pull the first pipeline to the flaw detection platform for welding quality inspection. At the same time, the reciprocating platform returns to the initial position to load the second pipeline and moves the second pipeline to the welding platform so that the front end of the second pipeline is aligned with the tail end of the first pipeline along the central axis and welded together by the welding unit.

[0034] The spacing of the flaw detection platform and welding platform is matched to the pipeline length. The flaw detection platform is used to inspect the welding quality of the welds at the beginning and end of the pipeline. As an example and not a limitation, this application uses conventional ultrasonic testing, which is faster and more efficient.

[0035] S05) Start the winch to pull the first pipeline into the jointing platform. At the same time, the front end of the second pipeline enters the flaw detection platform for welding quality inspection. Meanwhile, the reciprocating platform returns to the initial position to load the third pipeline and moves it to the welding platform. The tail end of the second pipeline is welded to the front end of the third pipeline on the welding platform through the welding unit.

[0036] The jointing platform is used to wrap anti-corrosion material around the beginning and end of pipelines. A general-purpose wrapping machine can be used for the jointing platform; in pipeline construction, heat-shrinkable sleeves or cold-applied anti-corrosion tape are typically used. No jointing is required when the first pipeline reaches the jointing platform.

[0037] (S06) Continue pulling the first pipeline. When the front end of the fourth pipeline aligns with the tail end of the third pipeline, tighten the fastener. When the welding between the front end of the fourth pipeline and the tail end of the third pipeline is complete, loosen the fastener and continue pulling the first pipeline so that it passes through the fastener and connects with the first pipeline bracket exiting the pipeline processing area. At this time, the tail end of the first pipeline and the front end of the second pipeline are located on the jointing platform, where anti-corrosion material is wrapped for jointing.

[0038] The tightening component is a part of the limiting platform, which includes a bracket and a locking device. The locking device has a clamp that allows the pipeline to pass through and a tightening component that clamps the clamp. The clamp consists of two semi-circular arcs. Pressure is applied to the clamp by the tightening component to reduce its opening, thereby achieving fixation.

[0039] During the lifting process in mountainous areas, constant vigilance is required to prevent pipeline detachment. This application utilizes a triple anti-slip structure comprised of wire ropes, one-way locking mechanisms in pipe supports, and tightening components to effectively prevent pipeline detachment and subsequent slippage, both overall and locally. Specifically, the wire ropes provide overall traction from the first pipeline, serving as a safety net against slippage. Locally, the one-way locking mechanisms can be flexible bushings or sliding blocks. These mechanisms allow only one-way passage of the pipeline within the cavity. If the pipeline breaks and slips during traction, the preceding pipeline remains supported by the wire ropes, while the trailing pipeline is blocked by numerous one-way locking mechanisms. These mechanisms in each cavity create a continuous blocking effect, preventing further slippage. Furthermore, the one-way locking mechanisms cover the entire cavity, providing additional protection if the pipeline sways after slippage.

[0040] S07) Process each pipeline sequentially according to steps S04)~S06). During the processing, control the start or stop of the production line and winch according to the pipeline processing progress so that the pipeline connection progress matches the traction distance.

[0041] The assembly line in this application completes the entire pipeline processing process directly within the trench, innovatively breaking the original construction model and reconstructing the construction process using assembly line thinking. The technical solution of this application can significantly reduce the land area required for construction in mountainous areas. This application makes full use of the internal space of the excavated trench, significantly reducing the reserved construction space on both sides of the trench excavation. After reducing the construction space, the area of ​​land requisitioned in mountainous areas is greatly reduced, while the clearing time is shortened, significantly reducing the risks during the construction process.

[0042] This application integrates the various devices required for pipeline laying, thereby reducing the construction site occupation. The above advantages are even more significant in rugged mountainous areas. On the one hand, it can reduce the workload of mechanical equipment and improve construction efficiency; on the other hand, the integrated production line has a stronger adaptability to the site and can operate in more complex construction sites.

[0043] This application is widely applicable. In mountainous areas, it remains suitable for construction projects that do not require trench excavation. Specifically, the support columns can be directly fixed to the mountain surface, with the pipeline bracket serving as both a construction tool and an integral part of the project, thus reducing construction costs. Construction can be carried out using the assembly line method described in this application. This method significantly improves construction efficiency, drastically reduces project investment, eliminates the need for backfilling, and significantly reduces environmental damage and subsequent soil and water conservation costs. Similarly, this application is also applicable to plains areas.

[0044] It should be noted that, regardless of whether a pipe trench needs to be excavated, the laying height of the pipeline should be measured in advance when installing the support columns. The laying height can be determined by the burial depth of the support columns.

[0045] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0046] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A pipeline drainage system for mountainous areas, characterized in that, The pipeline is installed in a pre-excavated trench in the mountainous area. The pipeline is equipped with laying devices that extend from the low slope to the high slope. The laying devices are connected in series with the following components: A reciprocating platform, wherein the reciprocating platform conveys pipeline units to the production line through reciprocating movement; The welding platform, with its spacing from the reciprocating platform matching the pipeline length, includes a connecting unit and a welding unit. The connecting unit is used to align the beginning and end of two continuous pipelines, to weld fittings to the pipeline, and to weld the joints between the beginning and end of the two continuous pipelines. The fittings include a traction head located at the front end of the first pipeline section. The flaw detection platform is spaced from the welding platform and the distance between them is matched with the pipeline length. The flaw detection platform is used to inspect the welding quality at the beginning and end of the pipeline. A jointing platform is used to wrap anti-corrosion material around the beginning and end of pipelines. The production line is equipped with the following features in the intervals between the reciprocating platform, welding platform, flaw detection platform, and jointing platform, as well as inside the trench above the laying device: The pipeline bracket includes a support column embedded in the pipeline trench and a bracket platform fixedly connected to the support column. The bracket platform is provided with a conveying roller and a pipe support in sequence along the pipeline movement direction. The pipe support has a cylindrical cavity, and the inner wall of the cavity is provided with a one-way locking mechanism. The trench is located at the top of the slope: A winch having a wire rope connected to the traction head.

2. The pipeline drainage system for mountainous areas according to claim 1, characterized in that, The reciprocating platform includes a moving platform, a lead screw passing through the center of the moving platform, and limit rods arranged on both sides of the lead screw and passing through the moving platform. The lead screw is driven by a motor to reciprocate the moving platform. The moving platform is provided with a pipeline support and a baffle located behind the pipeline support.

3. The pipeline drainage system for mountainous areas according to claim 2, characterized in that, A limiting platform is also provided after the patching platform. The limiting platform includes a bracket and a locking device. The locking device has a sleeve that allows the pipeline to pass through and a tightening component that clamps the sleeve.

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