Pipe cladding method and welding device

Abstract

The present application relates to the technical field of building construction, and particularly relates to a pipe curtain welding method and a welding device. The pipe curtain welding method and the welding device cut each to-be-cut region, weld multiple steel pipes to form a pipe curtain structure by using a connecting assembly after cutting, avoid error problems caused by cutting, and make the pipe curtain structure formed by the present application not have gaps, not have defects of poor sealing effect caused by poor welding effect, and not have water leakage caused by poor sealing effect. Finally, the present application can solve the technical problem that when the diameter of the steel pipe in the pipe curtain is greater than 2m, multiple steel pipes need to be welded to form a pipe curtain structure, and poor sealing effect caused by poor welding effect is easy to occur when the pipe curtain is welded, which affects construction safety.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a pipe curtain welding method and welding apparatus. Background Technology

[0002] The pipe jacking freezing method is a construction method that combines "pipe jacking + freezing pre-support and mining method tunneling". Among them, the pipe jacking consists of large steel pipes arranged around the tunnel and along the entire length of the tunnel to provide strong support and protect the tunnel construction safety; while freezing involves freezing the soil between the steel pipes and the surrounding soil into frozen soil, forming a water-stop curtain.

[0003] In layman's terms, this method involves pre-installing a steel protective casing along the outline of the tunnel excavation, and then excavation takes place inside the casing. The protective casing consists of a series of large steel pipes arranged in sequence and artificial frozen soil. The final pipe liner for this section of the tunnel excavation project consisted of 36 steel pipes with a diameter of 1.62 meters, forming an elliptical tunnel excavation cross-section that is 18 meters wide and 22 meters high, equivalent to the height of a 7-story building.

[0004] The conventional freezing method involves directly driving freezing pipes into the soil and circulating a refrigerant (a type of brine cooled to below -30°C, cold but not freezing) inside the pipes, thus creating frozen soil around them. However, this won't work here because the tunnel route is curved, making it impossible to lay freezing pipes directly in the soil. The only feasible way to implement freezing pipes is to place them inside large steel pipes.

[0005] However, when the diameter of the steel pipes in the pipe curtain is greater than 2m, multiple steel pipes need to be welded to form the pipe curtain structure. During the welding of the pipe curtain, there is a risk of water leakage due to poor sealing effect caused by poor welding effect, which affects construction safety. Summary of the Invention

[0006] The main objective of this invention is to provide a pipe curtain welding method and welding device, which aims to solve the technical problem in the related technology that when the diameter of the steel pipe in the pipe curtain is greater than 2m, multiple steel pipes need to be welded to form a pipe curtain structure. However, when welding the pipe curtain, there is a risk of water leakage due to poor sealing effect caused by poor welding effect, which affects construction safety.

[0007] To achieve the above objectives, in a first aspect, the present invention provides a pipe curtain welding method, comprising the following steps:

[0008] Multiple steel pipes are jacked circumferentially at intervals to the target construction area to form a ring of steel pipes within the target construction area; wherein, a gap is formed between any two adjacent steel pipes, and a cutting area is formed between each steel pipe and the two adjacent steel pipes.

[0009] Multiple support pipes, spaced apart along the extension direction of the steel pipe, are installed inside each of the steel pipes.

[0010] The areas to be cut are cut sequentially to form areas to be closed.

[0011] A connecting assembly is installed in each of the areas to be enclosed; wherein the connecting assembly extends along the extension direction of the steel pipe, and a welding position is formed between each connecting assembly and the two adjacent steel pipes;

[0012] Welding is carried out sequentially at each of the welding positions along the extension direction of the steel pipes, so that multiple steel pipes and multiple connecting components are connected in sequence and enclosed to form the pipe curtain structure.

[0013] Optionally, the connector includes a first steel plate and a second steel plate spaced apart from the first steel plate;

[0014] Before the step of sequentially welding each of the welding positions along the extension direction of the steel pipes to connect multiple steel pipes and multiple connecting components in sequence to form the pipe curtain structure, the method further includes:

[0015] Along the direction from the outer wall of the steel pipe ring to the inner wall of the steel pipe ring, each of the areas to be closed is divided into a first closed area and a second closed area;

[0016] The step of sequentially welding each of the welding positions along the extension direction of the steel pipes to connect multiple steel pipes and multiple connecting components in sequence to form the pipe curtain structure includes:

[0017] Along the extension direction of the steel pipe, the first steel plate is installed in the first enclosed area, and the second steel plate is installed in the second enclosed area; wherein, each of the first steel plates and each of the second steel plates forms a welding position with two adjacent steel pipes;

[0018] Welding is performed sequentially at each of the aforementioned welding positions so that multiple steel pipes are connected to multiple first steel plates and second steel plates in sequence and enclosed to form the pipe curtain structure.

[0019] Optionally, before the step of sequentially performing welding operations at each of the welding positions to connect the plurality of steel pipes to the plurality of first steel plates and second steel plates in sequence and enclose them to form the pipe curtain structure, the method further includes:

[0020] The welding positions are divided into a first welding position, a second welding position, and a third welding position, which are spaced apart in the direction from the outer wall of the steel pipe ring to the inner wall of the steel pipe ring.

[0021] Welding is performed sequentially along the direction from the outer wall of the steel pipe ring to the inner wall of the steel pipe ring at the first weld position, the second weld position, and the third weld position corresponding to each of the first steel plates.

[0022] Welding is performed again along the direction from the outer wall of the steel pipe ring to the inner wall of the steel pipe ring, sequentially welding the first weld position, the second weld position and the third weld position corresponding to each of the second steel plates, so that multiple steel pipes are sequentially connected with multiple first steel plates and second steel plates to form the pipe curtain structure.

[0023] Optionally, the step of sequentially welding the first weld position, the second weld position, and the third weld position corresponding to each of the first steel plates along the direction from the outer wall of the steel pipe ring to the inner wall of the steel pipe ring includes:

[0024] Along the direction from the outer wall of the steel pipe ring to the inner wall of the steel pipe ring, the first weld position and the second weld position corresponding to each of the first steel plates are fully welded in sequence;

[0025] Welding is performed on each of the third welding positions.

[0026] Optionally, before the steps of installing the first steel plate in the first enclosed area and installing the second steel plate in the second enclosed area along the extension direction of the steel pipe, the method further includes:

[0027] The outer area of ​​the target construction area, directly opposite each of the first closed areas, is designated as the detection location.

[0028] The over-excavation amount at each of the detection locations is detected and controlled within a preset value; wherein, the preset value is along the direction from the outer wall of the steel pipe ring to the inner wall of the steel pipe ring, and the over-excavation amount at each detection location is A, wherein A≤5mm.

[0029] Optionally, the step of detecting and controlling the over-digging amount at each of the detected locations within a preset value includes:

[0030] Detect whether the over-digging amount at each of the detection locations is greater than the preset value;

[0031] When the over-excavation amount is greater than the preset value, mortar is used to fill the detection position so that the over-excavation amount is less than or equal to the preset value.

[0032] Optionally, after the step of filling the detection location with mortar when the over-excavation amount is greater than the preset value, so that the over-excavation amount is less than or equal to the preset value, the method further includes:

[0033] When the over-excavation amount at each of the detection locations is less than or equal to the preset value, the step of installing the first steel plate in the first closed area and the second steel plate in the second closed area along the extension direction of the steel pipe is executed.

[0034] Optionally, before the step of dividing each of the areas to be closed into a first closed area and a second closed area along the direction from the outer wall of the steel pipe ring to the inner wall of the steel pipe ring, the method further includes:

[0035] Obtain a first width group for each of the first closed regions and each of the second closed regions along the circumference of the steel pipe ring; wherein, the first width group includes a first sub-width and a second sub-width corresponding to each of the first closed regions;

[0036] The first standard width corresponding to the first steel plate is determined based on the first sub-width, and the second standard width corresponding to the second steel plate is determined based on the second sub-width; wherein the first sub-width is greater than or equal to the first standard width, and the second sub-width is greater than or equal to the second standard width.

[0037] Optionally, the first sub-width is B, the first standard width is C, the second sub-width is D, and the second standard width is E; wherein, C≤B≤C+5mm, and E≤D≤E+5mm.

[0038] Optionally, the step of jacking multiple steel pipes circumferentially into the target construction area to form a steel pipe ring within the target construction area includes:

[0039] A steel pipe is pushed into the target construction area so that the steel pipe forms a pilot pipe within the target construction area;

[0040] Based on the pilot tube, multiple steel pipes arranged at intervals are sequentially pushed into the target construction area to form a steel pipe ring within the target construction area.

[0041] Based on the same technical concept, in a second aspect, the present invention proposes a pipe curtain welding apparatus for implementing the pipe curtain welding method described in the first aspect.

[0042] The technical solution of this invention involves advancing multiple steel pipes circumferentially at intervals to the target construction area to form a ring of steel pipes within the target construction area. Then, multiple support pipes, spaced apart along the extension direction of each steel pipe, are installed inside each pipe. Next, the areas to be cut are sequentially cut to form areas to be enclosed. A connecting component is installed in each area to be enclosed. Finally, welding is performed sequentially along the extension direction of the steel pipes at each welding position, so that the multiple steel pipes and multiple connecting components are sequentially connected and enclosed to form a pipe curtain structure. This invention first cuts the areas to be cut, and after the cutting is completed... By using connecting components to weld multiple steel pipes together to form a pipe curtain structure, the error caused by cutting is avoided. This ensures that the pipe curtain structure formed by the present invention will not have gaps, and will not have defects such as poor sealing effect due to poor welding effect, nor will it leak water due to poor sealing effect. Ultimately, the present invention can solve the technical problem in related technologies where, when the diameter of the steel pipes in the pipe curtain is greater than 2m, multiple steel pipes need to be welded to form a pipe curtain structure. However, during the welding of the pipe curtain, there is a risk of leakage due to poor sealing effect due to poor welding effect, which affects construction safety. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0044] Figure 1 This is a schematic flowchart illustrating a pipe curtain welding method according to an embodiment of the present invention;

[0045] Figure 2 for Figure 1 The flowchart of step S500 in the example is shown;

[0046] Figure 3 for Figure 2 The flowchart of step S570 in the example is shown below;

[0047] Figure 4 The flowcharts are shown in some specific embodiments of the present invention.

[0048] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0049] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0050] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the mechanisms in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0051] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0052] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0053] The inventive concept of the present invention will be further explained below with reference to some specific embodiments.

[0054] Please see Figures 1 to 4 This invention proposes a pipe curtain welding method, comprising the following steps:

[0055] S100. Multiple steel pipes are jacked circumferentially to the target construction area to form a ring of steel pipes within the target construction area; wherein, a gap is formed between any two adjacent steel pipes, and a cutting area is formed between each steel pipe and its two adjacent steel pipes.

[0056] S200. Install multiple support pipes that are spaced apart along the extension direction of the steel pipe inside each steel pipe.

[0057] S300. Cut each area to be cut sequentially to form an area to be closed.

[0058] S400. Install a connecting assembly in each area to be enclosed; wherein the connecting assembly extends along the extension direction of the steel pipe, and each connecting assembly and its two adjacent steel pipes form a welding position;

[0059] S500. Welding is carried out sequentially at each welding position along the extension direction of the steel pipe so that multiple steel pipes and multiple connecting components are connected in sequence and enclosed to form a pipe curtain structure.

[0060] In this embodiment, multiple steel pipes are circumferentially advanced to the target construction area to form a ring of steel pipes within the target construction area. Then, multiple support pipes, spaced apart along the extension direction of each steel pipe, are installed inside each pipe. Next, each area to be cut is sequentially cut to form an area to be enclosed. A connecting component is installed in each area to be enclosed. Finally, welding is performed sequentially along the extension direction of the steel pipes at each welding position, so that the multiple steel pipes and multiple connecting components are sequentially connected and enclosed to form a pipe curtain structure. This invention first cuts each area to be cut, and after the cutting is completed, then... By using connecting components to weld multiple steel pipes together to form a pipe curtain structure, the error problems caused by cutting are avoided. This ensures that the pipe curtain structure formed by the present invention will not have gaps, and will not have defects such as poor sealing effect due to poor welding effect, nor will it have water leakage due to poor sealing effect. Ultimately, the present invention can solve the technical problem in related technologies where, when the diameter of the steel pipes in the pipe curtain is greater than 2m, multiple steel pipes need to be welded to form a pipe curtain structure. However, during the welding of the pipe curtain, poor welding effect can easily lead to water leakage due to poor sealing effect, which affects construction safety.

[0061] In some specific embodiments, the connector includes a first steel plate and a second steel plate spaced apart from the first steel plate;

[0062] Before step S500, the method further includes:

[0063] S600. Along the direction from the outer wall of the steel pipe ring to the inner wall of the steel pipe ring, each area to be closed is divided into a first closed area and a second closed area.

[0064] Step S500 includes:

[0065] S510. Along the extension direction of the steel pipe, a first steel plate is installed in the first closed area, and a second steel plate is installed in the second closed area; wherein each first steel plate and each second steel plate forms a welding position with two adjacent steel pipes respectively;

[0066] S520. Welding is carried out sequentially at each welding position so that multiple steel pipes are connected to multiple first steel plates and second steel plates in sequence and enclosed to form a pipe curtain structure.

[0067] In some specific embodiments, before step S520, the following steps are also included:

[0068] S530, The welding positions are divided into a first welding position, a second welding position, and a third welding position, which are arranged at intervals in the direction from the outer wall of the steel pipe ring to the inner wall of the steel pipe ring.

[0069] S540. Along the direction from the outer wall of the steel pipe ring to the inner wall of the steel pipe ring, weld the first weld position, the second weld position and the third weld position corresponding to each first steel plate in sequence.

[0070] S550. Again, along the direction from the outer wall of the steel pipe ring to the inner wall of the steel pipe ring, weld the first weld position, the second weld position and the third weld position corresponding to each second steel plate in sequence, so that multiple steel pipes are connected to multiple first steel plates and second steel plates in sequence and enclose to form a pipe curtain structure.

[0071] In this embodiment, during specific use, each area to be sealed is first divided into a first sealing area and a second sealing area. Then, welding is carried out sequentially at each welding position so that multiple steel pipes and multiple first steel plates are connected in sequence to form a pipe curtain structure. This allows the invention to weld and connect multiple steel pipes to form a pipe curtain structure. Under this premise, during specific welding, the welding positions are divided into first welding positions, second welding positions, and third welding positions arranged at intervals along the direction from the outer wall to the inner wall of the steel pipe ring. Then, along the direction from the outer wall to the inner wall of the steel pipe ring, the first welding positions, second welding positions, and third welding positions corresponding to each first steel plate are welded in sequence. This allows the invention to perform multiple welding operations at each welding position during use, and ensures that each welding position can form a good sealing effect during the welding process.

[0072] It should be specifically and clearly stated that, in this embodiment, when welding each weld position, full welding should be used, and, during the welding process, each weld seam needs to be chamfered.

[0073] In some specific embodiments, step S550 includes:

[0074] S551. Along the direction from the outer wall of the steel pipe ring to the inner wall of the steel pipe ring, the first weld position and the second weld position corresponding to each first steel plate are fully welded in sequence.

[0075] S552, Weld each of the third welding positions.

[0076] In this embodiment, when the first and second welding positions corresponding to each first steel plate are fully welded in sequence along the direction from the outer wall of the steel pipe ring to the inner wall of the steel pipe ring, the first welding position needs to be fully welded first. After the first welding position is fully welded, the second welding position is fully welded, and finally the third welding position is welded. In this way, the present invention can complete the welding work of each welding position in specific use.

[0077] It should be specifically and clearly stated that, in this embodiment, when welding the first, second, and third welding positions, chamfering should be performed. This welding method ensures the connection quality during welding.

[0078] In some specific embodiments, before step S510, the following steps are also included:

[0079] S560. The outer area of ​​the target construction area directly opposite each first closed area shall be designated as the detection location.

[0080] S570. Detect and control the over-excavation amount at each detection location within a preset value; wherein, the preset value is along the direction from the outer wall of the steel pipe ring to the inner wall of the steel pipe ring, and the over-excavation amount at the detection location is A, where A≤5mm.

[0081] In this embodiment, the outer area of ​​the target construction area facing each first closed area is divided into detection positions. Then, the over-excavation amount of each detection position is detected and controlled within a preset value. This ensures that the over-excavation amount of each first closed area is less than or equal to 5mm when the invention is used, thereby improving the sealing performance and ensuring the contact effect between the pipe curtain structure and the geological body.

[0082] It should be specifically and clearly stated that, in this embodiment, when controlling the over-excavation at each detection location, materials such as cement mortar from the prior art can be used for filling, but are not limited to.

[0083] In some specific embodiments, step S570 includes:

[0084] S571. Check whether the over-excavation amount at each detection location is greater than the preset value;

[0085] S572. When the over-excavation amount is greater than the preset value, mortar is used to fill the detection position so that the over-excavation amount is less than or equal to the preset value.

[0086] In this embodiment, when the over-excavation amount is greater than a preset value, mortar is used to fill the detection position so that the over-excavation amount is less than or equal to the preset value.

[0087] It should be specifically and clearly stated that, in this embodiment, the mortar used to fill the detection location can be, but is not limited to, configured in the following manner:

[0088] Cement, sand, and water are mixed in a mass ratio of cement:sand:water = 1:1:1.

[0089] In some specific embodiments, after step S572, the method further includes:

[0090] S573. When the over-excavation amount at each detection location is less than or equal to the preset value, the steps of installing the first steel plate in the first closed area and the second steel plate in the second closed area along the extension direction of the steel pipe are executed.

[0091] In this embodiment, when the over-excavation amount at each detection location is less than or equal to a preset value, the closure construction can be carried out directly.

[0092] In some specific embodiments, before step S600, the following steps are also included:

[0093] S700. Obtain a first width group for each first closed region and each second closed region along the circumference of the steel pipe ring; wherein, the first width group includes a first sub-width and a second sub-width corresponding to each first closed region;

[0094] S800. Determine the first standard width corresponding to the first steel plate based on the first sub-width, and determine the second standard width corresponding to the second steel plate based on the second sub-width; wherein the first sub-width is greater than or equal to the first standard width, and the second sub-width is greater than or equal to the second standard width.

[0095] In this embodiment, the first width group of each first closed area and each second closed area along the circumference of the steel pipe ring is first obtained. Then, the first standard width corresponding to the first steel plate is determined according to the first sub-width, and the second standard width corresponding to the second steel plate is determined according to the second sub-width. This ensures the accuracy of each closed area during use and improves the sealing effect.

[0096] In some specific embodiments, the first sub-width is B, the first standard width is C, the second sub-width is D, and the second standard width is E; wherein, C≤B≤C+5mm, E≤D≤E+5mm.

[0097] In this embodiment, the accuracy error of both the first sub-width and the second sub-width is controlled within 5mm, which can ensure accuracy and improve sealing performance.

[0098] In some specific embodiments, step S100 includes:

[0099] S110. A steel pipe is pushed into the target construction area so that the steel pipe forms a pilot pipe in the target construction area.

[0100] S120. Based on the pilot guide pipe, multiple steel pipes arranged at intervals are sequentially jacked into the target construction area to form a steel pipe ring within the target construction area.

[0101] Based on the same technical concept, in a second aspect, the present invention proposes a pipe curtain welding apparatus for implementing the pipe curtain welding method exemplified in the preceding embodiments.

[0102] In this embodiment, multiple steel pipes are circumferentially advanced to the target construction area to form a ring of steel pipes within the target construction area. Then, multiple support pipes, spaced apart along the extension direction of each steel pipe, are installed inside each pipe. Next, each area to be cut is sequentially cut to form an area to be enclosed. A connecting component is installed in each area to be enclosed. Finally, welding is performed sequentially along the extension direction of the steel pipes at each welding position, so that the multiple steel pipes and multiple connecting components are sequentially connected and enclosed to form a pipe curtain structure. This invention first cuts each area to be cut, and after the cutting is completed, then... By using connecting components to weld multiple steel pipes together to form a pipe curtain structure, the error problems caused by cutting are avoided. This ensures that the pipe curtain structure formed by the present invention will not have gaps, and will not have defects such as poor sealing effect due to poor welding effect, nor will it have water leakage due to poor sealing effect. Ultimately, the present invention can solve the technical problem in related technologies where, when the diameter of the steel pipes in the pipe curtain is greater than 2m, multiple steel pipes need to be welded to form a pipe curtain structure. However, during the welding of the pipe curtain, poor welding effect can easily lead to water leakage due to poor sealing effect, which affects construction safety.

[0103] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A method for welding pipe curtains, characterized in that, Includes the following steps: Multiple steel pipes are jacked circumferentially at intervals to the target construction area to form a ring of steel pipes within the target construction area; wherein, a gap is formed between any two adjacent steel pipes, and a cutting area is formed between each steel pipe and the two adjacent steel pipes. Multiple support pipes are installed inside each of the steel pipes, spaced apart along the extension direction of the steel pipes; The areas to be cut are cut to form areas to be closed. Install a connecting component in each of the areas to be enclosed; Welding is performed to connect multiple steel pipes and multiple connecting components in a circumferential direction and enclose them to form a pipe curtain structure. The step of installing a connecting component in each of the areas to be enclosed includes: Determine a current work area from the plurality of areas to be closed; A connecting component is installed at intervals within the current working area; Along the circumferential direction of the steel pipe ring, the remaining areas to be closed are sequentially designated as the current working areas, and the step of installing a connecting component at intervals in the areas to be closed is repeated until a connecting component is installed in each of the areas to be closed. The connecting assembly includes a first steel plate and a second steel plate spaced apart from the first steel plate in the radial direction of the steel pipe ring; Before the step of installing a connecting component at intervals within the current working area, the method further includes: Along the radial direction of the steel pipe ring, the current working area is divided into a first closed area and a second closed area; The step of installing a connecting component at intervals within the current working area includes: Along the extension direction of the steel pipe ring, the first steel plate is installed in the first enclosed area, and the second steel plate is installed in the second enclosed area to form the connecting assembly installed at intervals in the current working area; wherein, the first steel plate and the second steel plate are distributed at intervals with two adjacent steel pipes, a first welding position is formed between the first steel plate and two adjacent steel pipes, and a second welding position is formed between the second steel plate and two adjacent steel pipes.

2. The pipe curtain welding method as described in claim 1, characterized in that, The step of performing welding construction to sequentially connect multiple steel pipes and multiple connecting components circumferentially to form the pipe curtain structure includes: Welding is carried out sequentially at each of the first welding positions along the circumferential direction of the steel pipe ring. After the welding of all the first welding positions is completed, welding is carried out sequentially at each of the second welding positions, so that the multiple steel pipes and the multiple connecting components are connected and enclosed in the circumferential direction to form the pipe curtain structure.

3. The pipe curtain welding method as described in claim 2, characterized in that, The first enclosed area includes a first weld position, a second weld position, and a third weld position arranged sequentially from the outside to the inside along the radial direction of the steel pipe ring; the second enclosed area includes a first current weld position, a second current weld position, and a third current weld position arranged sequentially from the outside to the inside along the radial direction of the steel pipe ring. The step of sequentially welding each of the first welding positions along the circumferential direction of the steel pipe ring, and after completing the welding of all the first welding positions, continuing to sequentially weld each of the second welding positions, so that multiple steel pipes and multiple connecting components are sequentially connected circumferentially to form the pipe curtain structure, includes: One of the first welding positions is taken as the first current welding position, and welding is carried out sequentially from the outside to the inside of the first current welding position according to the radial direction of the steel pipe ring; Along the circumferential direction of the steel pipe ring, the remaining first welding positions are sequentially taken as the first current welding positions, and the steps of taking one of the first welding positions as the first current welding position and sequentially performing welding construction on the first welding position, the second welding position and the third welding position in the first current welding position from the outside to the inside in the radial direction of the steel pipe ring are repeated until the construction of all the first welding positions is completed. After completing the welding work at all the first welding positions, one of the second welding positions is then designated as the second current welding position. Welding work is then carried out sequentially from the outside to the inside of the first current welding position, the second current welding position, and the third current welding position in the second current welding position according to the radial direction of the steel pipe ring. Along the circumferential direction of the steel pipe ring, the remaining second welding positions are sequentially designated as the second current welding positions. The process of completing the welding of all the first welding positions, then designating one of the second welding positions as the second current welding position, and sequentially welding the first current welding position, the second current welding position, and the third current welding position in the second current welding position from the outside to the inside in the radial direction of the steel pipe ring is repeated until the construction of all the second welding positions is completed, so that multiple steel pipes and multiple connecting components are sequentially connected along the circumferential direction and enclosed to form the pipe curtain structure.

4. The pipe curtain welding method as described in claim 3, characterized in that, Full soldering is performed on the first soldering position, the second soldering position, the third soldering position, the first current soldering position, the second current soldering position, and the third current soldering position.

5. The pipe curtain welding method as described in claim 2, characterized in that, Before the step of sequentially designating the remaining areas to be closed as the current work areas and repeatedly installing a connecting component at intervals within each area to be closed, along the circumferential direction of the steel pipe ring, until a connecting component is installed in each area to be closed, the method further includes: The outer area of ​​the target construction area, directly opposite each of the first closed areas, is designated as the detection area. Detect the over-excavation amount in each of the aforementioned detection areas; The over-excavation amount in each of the aforementioned detection areas shall be controlled to be less than 5mm.

6. The pipe curtain welding method as described in claim 5, characterized in that, The step of controlling the over-digging amount in each of the detection areas to less than or equal to 5mm includes: Detect whether the over-excavation amount in each of the detection areas is greater than a preset value; When the over-excavation amount is greater than the preset value, mortar is used to fill the detection area so that the over-excavation amount is less than or equal to the preset value.

7. The pipe curtain welding method as described in claim 6, characterized in that, Prior to the step of installing the first steel plate in the first enclosed area and the second steel plate in the second enclosed area along the extension direction of the steel pipe ring to form the spaced-apart connecting assembly in the current working area, the method further includes: Obtain the first chord length of each of the first closed regions and the second chord length of each of the second closed regions; The first steel plate with a width not greater than the length of the first chord is selected, and the second steel plate with a width not greater than the length of the second chord is selected.

8. The pipe curtain welding method as described in claim 7, characterized in that, The first chord length is A, the second chord length is B, the width of the first steel plate is C, and the width of the second steel plate is D; wherein, C≤A≤C+5mm, E≤B≤E+5mm.

9. The pipe curtain welding method according to any one of claims 1 to 8, characterized in that, The step of jacking multiple steel pipes circumferentially into the target construction area to form a steel pipe ring within the target construction area includes: A pilot pipe is jacked into the target construction area; Based on the pilot tube, multiple steel pipes arranged circumferentially at intervals are sequentially jacked into the target construction area to form a steel pipe ring within the target construction area.

10. A pipe curtain welding apparatus, characterized in that, Used to implement the tube curtain welding method as described in any one of claims 1 to 9.

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