Pipeline shield construction method, pipeline and pipeline shield construction equipment

Abstract

The invention discloses a pipeline shield construction method, a pipeline and pipeline shield construction equipment. The pipeline shield construction method comprises the steps that a shield cutter head assembly is arranged in a starting well; releasing the strip to enable the strip to enter a starting well; winding the strip to enable the strip to be in a column spiral shape; connecting the wound strip into a barrel shape to form a pipeline main body which is gradually lengthened; driving the shield cutter head assembly to form a tunnel; and the pipeline main body is rotated, and the pipeline main body and the shield cutter head assembly are moved together, so that the pipeline main body is screwed into the tunnel. According to the pipeline shield construction method, the pipeline and the pipeline shield construction equipment, the pipeline construction efficiency can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of underground pipeline construction, and in particular to a pipeline shield construction method, a pipeline, and pipeline shield construction equipment. Background Art

[0002] During underground pipeline construction, a shield machine is used to excavate the tunnel. As the machine advances, the pipeline is brought into the tunnel. For example, a cutter can be installed on the side of the shield machine's cutterhead to form a spiral groove in the tunnel's sidewall. At the same time, spiral protrusions can be installed on the sidewall of the pipeline. As the shield machine advances, the pipeline rotates. The spiral protrusions and the spiral grooves work together to allow the pipeline to advance along with the shield machine. Pipelines are typically installed in sections. When a section of pipeline is screwed into the tunnel, the shield machine must be stopped, the shield's grouting system must be disconnected, and the next section of pipeline must be welded to the current section. This cumbersome process affects the efficiency of pipeline construction. Summary of the Invention

[0003] The embodiments of the present application provide a pipeline shield construction method, a pipeline, and pipeline shield construction equipment, which can improve the efficiency of pipeline construction.

[0004] In the first aspect, an embodiment of the present application provides a pipeline shield construction method, including: setting a shield cutterhead assembly in a starting shaft; releasing a strip to allow the strip to enter the starting shaft; winding the strip to form a columnar spiral; connecting the wound strip into a cylindrical shape to form a gradually lengthened pipeline body; advancing the shield cutterhead assembly to form a tunnel; rotating the pipeline body, and moving the pipeline body and the shield cutterhead assembly together to allow the pipeline body to be rotated into the tunnel.

[0005] According to an embodiment of the first aspect of the present application, the step of winding the strip includes: while winding the strip, applying a force to the strip so as to rotate the strip around the axis of the column spiral.

[0006] According to an embodiment of the first aspect of the present application, the shield cutterhead assembly includes a first cutterhead and a second cutter arranged radially along the first cutterhead; the step of making the shield cutterhead assembly advance includes: making the first cutterhead and the second cutter rotate and advance synchronously, so that the first cutterhead forms the end face of the tunnel, and the second cutter forms the side wall of the tunnel with a spiral groove.

[0007] According to an embodiment of the first aspect of the present application, the step of winding the strip includes: extruding the strip to form a strip protrusion; winding the strip so that the strip protrusion is bent together to form a spiral protrusion; and the spiral protrusion is engaged with the spiral groove.

[0008] According to an embodiment of the first aspect of the present application, the strip includes a material layer and an anti-corrosion layer, and the anti-corrosion layer is arranged on both sides of the material layer.

[0009] According to an embodiment of the first aspect of the present application, the material layer includes a metal layer; the step of connecting the wound strip into a cylindrical shape includes: gradually welding the wound strip to form a pipe body, and the length of the pipe body gradually increases.

[0010] On the second aspect, an embodiment of the present application provides a pipeline, which is manufactured using the pipeline shield construction method of the aforementioned embodiment of the present application and is set in a tunnel; the pipeline includes: a pipeline main body, including multiple belt structures, the belt structures are spiral ring-shaped, and the multiple belt structures are arranged along the axial direction of the pipeline main body, and two adjacent belt structures are fixedly connected.

[0011] According to an embodiment of the second aspect of the present application, the pipe body includes a spiral protrusion, which protrudes from the outside of the pipe body and is used to engage with the spiral groove of the tunnel side wall.

[0012] According to an embodiment of the second aspect of the present application, the belt structure includes a material layer and an anti-corrosion layer, and the anti-corrosion layer is arranged on both sides of the material layer.

[0013] On the third aspect, an embodiment of the present application provides a pipeline shield construction equipment, including: a shield mechanism, including a shield cutterhead assembly and a rotating assembly; the shield cutterhead assembly is used to excavate a tunnel with an end face and a side wall; the rotating assembly is arranged on the side of the shield cutterhead assembly away from the end face, and the rotating assembly is used to rotate the pipeline body; a pipeline body lengthening mechanism, including a winding assembly, a connecting assembly and a strip supply assembly, the strip supply assembly is used to release the strip, and the strip is connected to the end of the pipeline body away from the end face; the winding assembly is arranged at the end of the pipeline body away from the end face, and the winding assembly is used to wind part of the strip; the connecting assembly is used to connect the edge of the wound strip to the pipeline body to lengthen the pipeline body.

[0014] According to an embodiment of the third aspect of the present application, the shield cutterhead assembly includes a first cutterhead and a second cutter, the first cutterhead is used for excavating to form an end face, the second cutter is arranged along the radial direction of the first cutterhead, and the second cutter is used to form a side wall with a spiral groove.

[0015] According to an embodiment of the third aspect of the present application, the winding assembly includes a winding roller, which is used to squeeze the strip to make the strip wound, and the winding roller is used to apply force to the wound strip to make the pipe body and the wound strip rotate and move axially along the first cutter disc.

[0016] According to an embodiment of the third aspect of the present application, the winding roller is provided with a protrusion, which is used to extrude the strip to form a strip protrusion, so that after the strip is connected to the pipe body, the strip protrusion forms a spiral protrusion; the spiral protrusion is engaged with the spiral groove to enable the pipe body to move spirally along the spiral groove.

[0017] In the pipeline shield construction method, pipeline and pipeline shield construction equipment provided by the embodiments of the present application, a shield cutterhead assembly is arranged in the starting shaft, and the shield cutterhead assembly is used to perform shield excavation underground to form a tunnel. The strip is released into the starting shaft, and in the starting shaft, the strip is wound so that the strip presents a column spiral shape, and then the strip is connected into a whole to form a pipeline body. The shield cutterhead assembly rotates and excavates to form a tunnel, and at the same time, the pipeline body also rotates while going deeper into the tunnel. In this process, the wound strips are continuously connected to form a gradually lengthened pipeline body to meet the length requirement of the pipeline body when the pipeline body goes deeper into the tunnel, thereby lengthening the pipeline body while maintaining tunnel excavation, improving the construction efficiency of pipeline shield construction, and reducing the construction cost of pipeline shield construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a flow chart of the pipeline shield construction method of an embodiment of the present application.

[0020] Figure 2 It is a construction schematic diagram corresponding to the pipeline shield construction method of an embodiment of the present application.

[0021] Figure 3 This is another construction schematic diagram corresponding to the pipeline shield construction method of an embodiment of the present application.

[0022] Figure 4 It is a structural schematic diagram of the strip material in the pipeline shield construction method of an embodiment of the present application.

[0023] Figure 5 This is a structural diagram of a pipeline in an embodiment of the present application.

[0024] Figure 6 This is another structural schematic diagram of the pipeline in an embodiment of the present application.

[0025] Figure 7 This is a construction schematic diagram of the pipeline shield construction equipment of an embodiment of the present application.

[0026] Figure 8 This is a structural schematic diagram of the winding assembly of the pipeline shield construction equipment in an embodiment of the present application.

[0027] Reference numerals:

[0028] 1. Shield mechanism; 11. Cutterhead assembly; 111. First cutterhead; 112. Second cutterhead; 12. Rotating assembly;

[0029] 2. Pipeline main body extension mechanism; 21. Winding assembly; 211. Winding roller; 212. Raised portion; 22. Strip supply assembly;

[0030] 3. Tunnel; 31. Spiral trough; 32. Starting shaft;

[0031] 4. Strip; 41. Pipe body; 411. Spiral protrusion; 42. Strip protrusion; 43. Material layer; 44. Anti-corrosion layer. DETAILED DESCRIPTION

[0032] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it will be apparent to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating the examples of the present application.

[0033] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The embodiments will be described in detail below with reference to the accompanying drawings.

[0034] Relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0035] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or region, it may mean that it is directly on the other layer or region, or that other layers or regions are included between it and the other layer or region. Furthermore, if the component is turned over, the layer or region will be "below" or "beneath" the other layer or region.

[0036] In this document, the term "and / or" simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0037] It should be understood that in the embodiments of the present application, "B corresponding to A" means that B is associated with A and B can be determined based on A. However, it should also be understood that determining B based on A does not mean determining B based solely on A, but B can also be determined based on A and / or other information.

[0038] The applicant discovered that when constructing underground pipelines, a shield machine is used to excavate a tunnel, and then the pipeline is pushed or pulled into the tunnel. When pushing or pulling the pipeline into the tunnel, great resistance needs to be overcome, which seriously affects the construction efficiency and construction cost. Therefore, a cutter can be set on the side of the shield machine. When the shield machine rotates and excavates, the side cutter will form a spiral groove on the side wall of the tunnel. At the same time, a spiral protrusion is set on the outer wall of the pipeline. When the shield machine rotates and excavates, the pipeline also rotates and advances together. At this time, the spiral protrusion and the spiral groove are engaged, making it easier for the pipeline to enter the tunnel, which can improve the construction efficiency to a certain extent. During construction, after a section of pipeline is screwed into the tunnel, the next section of pipeline needs to be set in the starting shaft of the tunnel. Since the pipeline itself has a certain length, it is necessary to suspend the shield operation and disconnect the grouting pipeline system required by the shield. After connecting the two sections of pipeline, the shield operation is restarted. This cycle is repeated to complete the pipeline construction process. Therefore, the pipeline construction process is still relatively cumbersome, which affects the construction efficiency and construction cost of the pipeline.

[0039] In view of the above analysis, the applicant proposed a pipeline shield construction method, pipeline and pipeline shield construction equipment. In the pipeline shield construction method, a shield cutterhead assembly is set in the starting shaft, and the shield cutterhead assembly is used to perform shield excavation underground to form a tunnel. The strip is released into the starting shaft, and in the starting shaft, the strip is wound so that the strip presents a column spiral shape, and then the strip is connected into a whole to form a pipeline body. The shield cutterhead assembly rotates and excavates to form a tunnel. At the same time, the pipeline body also rotates and penetrates into the tunnel. In this process, the wound strips are continuously connected to form a gradually lengthened pipeline body to meet the length requirement of the pipeline body when the pipeline body penetrates into the tunnel, thereby lengthening the pipeline body while maintaining tunnel excavation, improving the construction efficiency of the pipeline shield construction, and reducing the construction cost of the pipeline shield construction.

[0040] Figure 1 It is a flow chart of the pipeline shield construction method of an embodiment of the present application. Figure 2 It is a construction schematic diagram corresponding to the pipeline shield construction method of an embodiment of the present application.

[0041] See also Figure 1 and Figure 2 The present invention provides a pipeline shield construction method for constructing a pipeline underground through shield construction. It is understood that before the pipeline shield construction operation begins, a starting well 32 must be excavated from the surface, and the shield operation begins from starting well 32. During the pipeline shield construction process, the shield operation forms a tunnel 3, and the pipeline is moved into tunnel 3 to complete the pipeline shield construction process.

[0042] The pipeline shield construction method of the embodiment of the present application includes:

[0043] Continue reading Figure 1 and Figure 2 , step S1, setting the shield cutterhead assembly 11.

[0044] The shield cutterhead assembly 11 is set in the starting shaft 32. The shield cutterhead assembly 11 as a whole can be regarded as a rotating body, which can rotate around its own axis and move along its own axis, thereby crushing the rock and soil in front of the moving direction to achieve the excavation of the shield cutterhead assembly 11. In step S1, after the shield cutterhead assembly 11 is set, the shield operation is not immediately carried out. It is understandable that when setting the shield cutterhead assembly 11, the grouting system also needs to be connected. The grouting system is used to improve the structural stability of the surrounding rock and soil during the excavation process.

[0045] Continue reading Figure 1 and Figure 2 , step S2, releasing the strip 4.

[0046] The strip 4 can be loaded in the form of a coil. For example, the coil of the strip 4 can be set at the mouth of the departure shaft 32. The released strip 4 enters the departure shaft 32 and extends to the rear of the moving direction of the shield cutter head assembly 11.

[0047] Continue reading Figure 1 and Figure 2 , step S3, winding the strip 4.

[0048] The strip 4 is wound behind the shield cutterhead assembly 11 in the direction of travel, forming a cylindrical spiral, similar to a cylindrical spring. Along the axis of the shield cutterhead assembly 11, the wound strip 4 has a spiral gap and is discontinuous. The winding axis of the strip 4 coincides with the axis of the shield cutterhead assembly 11, and the wound strip 4 has a certain length along the axis of the shield cutterhead assembly 11, which is greater than the width of the strip 4.

[0049] Continue reading Figure 1 and Figure 2, step S4, connecting the wound strip 4.

[0050] The wound strip 4 is partially connected to form a whole. This portion is cylindrical and forms a pipe body 41, which can be used as a pipe. In this case, the connection location is mainly the spiral gap of the wound strip 4. The spiral gap is closed and the side wall of the formed pipe body 41 is continuous along the axis of the shield cutterhead assembly 11, which has a certain sealing performance. It should be noted that steps S1, S2, and S3 are performed in sequence for a certain location of the strip 4.

[0051] Continue reading Figure 1 and Figure 2 , step S5, rotating the shield cutterhead assembly 11.

[0052] By rotating the shield cutterhead assembly 11, the shield cutterhead assembly 11 will break the rock and soil in front of its own moving direction to form a tunnel 3. The tunnel 3 is cylindrical as a whole, with an end face and a side wall. The surface formed after the shield cutterhead assembly 11 breaks the rock and soil corresponds to the end face of the tunnel 3.

[0053] Continue reading Figure 1 and Figure 2 , step S6, rotating the pipe body 41.

[0054] After the shield cutterhead assembly 11 advances, the distance between the shield cutterhead assembly 11 and the departure shaft 32 increases. The pipe body 41 rotates and simultaneously moves along with the shield cutterhead assembly 11, allowing the pipe body 41 to spirally penetrate deeper into the tunnel 3 in the direction of movement of the shield cutterhead assembly 11, thus completing the pipeline shield construction process. During this process, the resistance to relative movement between the pipe body 41 and the sidewalls of the tunnel 3 becomes more uniform, reducing the possibility of excessive local resistance. This makes it easier for the pipe body 41 to enter the tunnel 3, thereby improving the efficiency of the pipeline shield construction.

[0055] In addition, during the continuous pipeline shield construction process, steps S2 to S5 can be considered to be performed simultaneously, but the positions of the strips 4 corresponding to steps S2 to S4 and S6 are different. During this process, the shield cutterhead assembly 11 gradually advances forward, and the pipeline body 41 moves in a synchronous spiral motion. The required pipeline body 41 becomes longer and longer. At the same time, more and more strips 4 are released, more and more strips 4 are wound, and more and more strips 4 are connected. The pipeline body 41 formed by the connected strips 4 becomes longer and longer, thereby meeting the length requirement of the pipeline body 41 as the shield cutterhead assembly 11 moves in a synchronous spiral motion. That is to say, in the embodiment of the present application, while the shield operation obtains a gradually lengthened tunnel 3, a longer pipeline body 41 is produced so that the pipeline body 41 can always penetrate into the tunnel 3 near the end face, thereby realizing pipeline shield construction. Therefore, using the pipeline shield construction method of the embodiment of the present application, the shield operation state can be maintained, thereby improving the construction efficiency of the pipeline shield construction and reducing construction costs. In addition, it can be understood that the grouting system required for the shield operation can be arranged in the hollow space inside the pipe body 41. For example, the grouting pipeline can be set inside the pipe body 41. Therefore, during the process of the pipeline shield construction method, the connection state of the grouting system can be maintained, and the construction efficiency of the pipeline shield construction can be improved and the construction cost can be reduced.

[0056] Furthermore, in step S3, while the strip 4 is being wound, a force is applied to the strip 4 to cause it to rotate about the axis of the column spiral. For example, rollers can be used to squeeze the strip 4 to bend and coil it. At the same time, the rollers can apply a force to the strip 4, thereby driving the wound strip 4 to spiral about the axis of the shield cutterhead. Since the pipe body 41 is actually also formed by spirally winding the strip 4, the force applied by the rollers to the strip 4 can promote the spiral motion of the pipe body 41 within the tunnel 3, allowing the pipe body 41 to more easily penetrate the tunnel 3.

[0057] Figure 3 This is another construction schematic diagram corresponding to the pipeline shield construction method of an embodiment of the present application.

[0058] Further, see Figure 3 Combined with Figure 1 The shield cutterhead assembly 11 includes a first cutterhead 111 and a second cutter 112 arranged radially of the first cutterhead 111. The first cutterhead 111 is a substantially disc-shaped rotating body, and the second cutter 112 is arranged radially of the first cutterhead 111 and protrudes from the edge of the first cutterhead 111.

[0059] Figure 4 It is a structural schematic diagram of the strip material in the pipeline shield construction method of an embodiment of the present application.

[0060] In step S5, see Figure 4 , and combined with Figure 3 and Figure 1 , causing the shield cutterhead assembly 11 to spirally move as a whole. The first cutterhead 111 spirally moves, crushing the rock and soil to form the end face of the tunnel 3. The second cutterhead 112 cuts the sidewall of the tunnel 3, forming a spiral groove 31 in the sidewall of the tunnel 3. The spiral groove 31 can guide the pipe body 41, making it easier to screw the pipe body 41 into the tunnel 3 in step S6.

[0061] Further, see Figure 1 、 Figure 3 and Figure 4 In step S3, the strip 4 is extruded to form a strip protrusion 42. The direction of the strip protrusion 42 extends in the same direction as the strip 4. At the strip protrusion 42, one side of the strip 4 is raised and the other side is recessed. While the strip protrusion 42 is being extruded, the strip 4 is wound, and the strip protrusion 42 is bent together to form a spiral protrusion 411. In other words, the spiral protrusion 411 is located outside the wound strip 4. After step S4, the sidewall of the pipe body 41 formed by the wound strip 4 is provided with a spiral protrusion 411. The spiral protrusion 411 of the pipe body 41 engages with the spiral groove 31 of the tunnel 3. In step S6, the pipe body 41 spirals relative to the sidewall of the tunnel 3. During this process, the spiral protrusion 411 slides within the spiral groove 31, improving the guiding ability of the spiral groove 31 for the pipe body 41, reducing the difficulty of the spiral motion of the pipe body 41 relative to the sidewall of the tunnel 3, and also facilitating the efficiency of the pipeline shield construction.

[0062] Further, see Figure 4 In the embodiment of the present application, the strip 4 includes a material layer 43 and an anti-corrosion layer 44, and the anti-corrosion layer 44 is provided on both sides of the material layer 43. The anti-corrosion layer 44 is provided on both sides of the strip 4. After the pipe body 41 is formed, the anti-corrosion layer 44 is also provided on the inside and outside of the pipe body 41, which can prevent corrosion from liquid and / or gas on both sides of the pipe body 41.

[0063] Further, see Figure 4 The material layer 43 includes a metal layer, so that the strip 4 has good structural strength and a certain plasticity. For example, the material layer 43 can be a steel plate, the strip 4 can be a composite steel strip, and the pipe body 41 can be a composite steel pipe.

[0064] In step S4, the strip 4 is connected to form the pipe body 41 by welding. The spiral gaps formed by the wound strip 4 can be welded together, which can fully utilize the strip 4 and at the same time make the pipe body 41 have good sealing ability.

[0065] Figure 5This is a structural diagram of a pipeline in an embodiment of the present application.

[0066] See also Figure 5 The present embodiment also provides a pipeline, which is manufactured by the pipeline shield construction method of the aforementioned embodiment of the present application and is installed in the tunnel 3. It is understood that the pipeline after construction can be used to transport liquids or gases underground, for example, to transport tap water, sewage, natural gas, etc.

[0067] The pipeline of the embodiment of the present application includes a pipeline body 41, which includes multiple belt structures. The belt structures are in a spiral ring shape. The multiple belt structures are arranged along the axial direction of the pipeline body 41, and two adjacent belt structures are fixedly connected. The pipeline body 41 of the embodiment of the present application is made of a strip 4. The wound strip 4 extends in a spiral shape and is connected into a whole to form the pipeline body 41. Each turn of the spiral strip 4 corresponds to a belt structure. At this time, the pipeline body 41 can be regarded as a plurality of belt structures connected in sequence. The multiple belt structures connected to each other are fixedly connected, so that the multiple belt structures form an integrated pipeline body 41. In addition, the connection should have good sealing performance so that the pipeline has good sealing ability.

[0068] Figure 6 This is another structural schematic diagram of the pipeline in an embodiment of the present application.

[0069] Further, see Figure 6 The pipe body 41 includes a spiral protrusion 411 that protrudes from the outside of the pipe body 41 and is used to engage with the spiral groove 31 on the side wall of the tunnel 3. As the tunnel 3 is excavated, the pipe body 41 spirally moves, making it easier for the pipe body 41 to penetrate deeper into the tunnel 3, thus achieving the underground laying of the pipe body 41. During this process, the spiral protrusion 411 engages with the spiral groove 31 on the side wall of the tunnel 3, guiding the pipe body 41, reducing the difficulty of the spiral movement of the pipe body 41 and improving the efficiency of pipeline construction.

[0070] Further, see Figure 5 and Figure 6 The strip structure includes a material layer 43 and an anti-corrosion layer 44, and the anti-corrosion layer 44 is provided on both sides of the material layer 43. The anti-corrosion layer 44 is provided on both sides of the strip 4. After the pipeline body 41 is formed, the anti-corrosion layer 44 is also provided on the inside and outside of the pipeline body 41, which can prevent corrosion from liquid and / or gas on both sides of the pipeline body 41.

[0071] Figure 7 This is a construction schematic diagram of the pipeline shield construction equipment of an embodiment of the present application.

[0072] See also Figure 7The present invention also provides a pipeline shield construction device. When using the pipeline shield construction method of the above embodiment of the present invention, the pipeline shield construction device of the embodiment of the present invention can be used.

[0073] The pipeline shield construction equipment of the embodiment of the present application includes: a shield mechanism 1, including a shield cutterhead assembly 11 and a rotating assembly 12; the shield cutterhead assembly 11 is used to excavate a tunnel 3 with an end face and a side wall; the rotating assembly 12 is arranged on the side of the shield cutterhead assembly 11 away from the end face, and the rotating assembly 12 is used to rotate the pipeline body 41; the pipeline body lengthening mechanism 2, including a winding assembly 21, a connecting assembly (located on the inner side of the pipeline body 41, not shown in the figure) and a strip supply assembly 22, the strip supply assembly 22 is used to release the strip 4, and the strip 4 is connected to the end of the pipeline body 41 away from the end face; the winding assembly 21 is arranged at the end of the pipeline body 41 away from the end face, and the winding assembly 21 is used to wind part of the strip 4; the connecting assembly is used to connect the edge of the wound strip 4 with the pipeline body 41 to lengthen the pipeline body 41.

[0074] The shield cutterhead assembly 11 of the shield mechanism 1 can start spiral motion from the starting shaft 32 to excavate and form a tunnel 3. It can be understood that the tunnel 3 has an end face and a side wall. The rotating assembly 12 is arranged on the side of the cutterhead assembly 11 away from the end face, and can drive the pipe body 41 to rotate. When the shield cutterhead assembly 11 spirals, the distance between the rotating assembly 12 and the shield cutterhead remains unchanged along the axial direction of the shield cutterhead assembly 11. Therefore, along the axial direction of the shield cutterhead assembly 11, the distance from the end of the pipe body 41 close to the end face of the tunnel 3 to the shield cutterhead assembly 11 remains unchanged, that is, along the axial direction of the shield cutterhead assembly 11, the shield cutterhead assembly 11 and the pipe body 41 move together. It should be noted that there is no restriction on the rotation speed of the shield cutterhead assembly 11 and the rotation speed of the pipe body 41, and they may be equal or unequal.

[0075] The pipe body lengthening mechanism 2 is used to make the strip 4 into a gradually lengthened pipe body 41. The strip 4 can be in the form of a coil and is set at the strip supply assembly 22. The strip supply assembly 22 releases the strip 4, which can also be regarded as the strip 4 being drawn out from the strip supply assembly 22. The winding assembly 21 winds the released strip 4 into a spiral shape. The axis of the wound strip 4 coincides with the axis of the shield cutter head assembly 11. Along the axial direction of the shield cutter head assembly 11, the wound strip 4 is not completely continuous and a spiral gap is formed. The connecting assembly can connect the wound strip 4. For example, the connecting assembly connects the spiral gaps by bonding or welding to form the pipe body 41. Along the axial direction of the shield cutter head assembly 11, the side wall of the pipe body 41 obtained by connecting the wound strip 4 is continuous and has good sealing ability. As the pipe body 41 spirals, the strip supply assembly 22 gradually releases the strip 4, the winding assembly 21 gradually winds the released strip 4, and the connecting assembly gradually connects the wound strip 4, thereby forming a longer pipe body 41, allowing the pipe body 41 to penetrate deeper into the gradually extending tunnel 3. Therefore, the pipe shield construction equipment of the embodiment of the present application can improve the construction efficiency of pipe shield construction and reduce construction costs.

[0076] Further, see Figure 7 The cutterhead assembly 11 includes a first cutterhead 111 and a second cutter 112 . The first cutterhead 111 is used for excavating to form an end face. The second cutter 112 is arranged along the radial direction of the first cutterhead 111 . The second cutter 112 is used to form a side wall with a spiral groove 31 .

[0077] The first cutter disc 111 is substantially a disc-shaped rotating body, and the second cutter 112 is disposed along the radial direction of the first cutter disc 111 and protrudes from the edge of the first cutter disc 111 .

[0078] The shield cutterhead assembly 11 moves in a spiral motion as a whole. The first cutterhead 111 moves in a spiral motion, breaking up the rock and soil to form the end face of the tunnel 3. The second cutterhead 112 cuts the sidewall of the tunnel 3, forming spiral grooves 31 therein. The spiral grooves 31 guide the pipe body 41, facilitating its spiral motion and reducing the difficulty of its penetration into the tunnel 3.

[0079] Figure 8 This is a structural schematic diagram of the winding assembly of the pipeline shield construction equipment in an embodiment of the present application.

[0080] Further, see Figure 8 , and combined with Figure 7The winding assembly 21 includes a winding roller 211, which is used to squeeze the strip 4 so that the strip 4 is wound, and the winding roller 211 is used to apply force to the wound strip 4 so that the pipe body 41 and the wound strip 4 rotate and move axially along the first cutter disc 111.

[0081] As the pipe body 41 spirals, the already wound strip 4 is pulled, and the unwound strip 4 moves to the winding assembly 21. The winding roller 211 squeezes the strip 4, causing it to bend and wind around the end of the pipe body 41. While winding the strip 4, a certain force acts between the winding roller 211 and the strip 4, generating friction between them. When the output torque of the winding roller 211 is large enough, the frictional force drives the wound strip 4 to rotate. Since the pipe body 41 is made of the strip 4, the frictional force also promotes the spiral motion of the pipe body 41, further reducing the difficulty of the pipe body 41 penetrating the tunnel 3 and improving the efficiency of the pipeline shield construction.

[0082] Further, see Figure 7 and Figure 8 The winding roller 211 is provided with a protrusion 212, which is used to extrude the strip 4 to form a strip protrusion 42, so that after the strip 4 is connected to the pipe body 41, the strip protrusion 42 forms a spiral protrusion 411; the spiral protrusion 411 is engaged with the spiral groove 31, so that the pipe body 41 moves spirally along the spiral groove 31.

[0083] During the process of winding the strip 4, the raised portion 212 of the winding roller 211 squeezes the strip 4 to form a strip protrusion 42. While squeezing and forming the strip protrusion 42, the strip 4 is bent and wound as a whole, and the strip protrusion 42 is bent together to form a spiral protrusion 411, thereby causing the obtained pipe body 41 to also have a spiral protrusion 411. The spiral protrusion 411 of the pipe body 41 engages with the spiral groove 31 of the tunnel 3. When the pipe body 41 spirally moves, the spiral protrusion 411 slides in the spiral groove 31, thereby improving the guiding ability of the spiral groove 31 on the pipe body 41, reducing the difficulty of the pipe body 41 spirally moving relative to the side wall of the tunnel 3, and also facilitating the improvement of the efficiency of the pipe shield construction.

[0084] In summary, the embodiments of the present application provide a pipeline shield construction method, a pipeline, and a pipeline shield construction equipment. In the pipeline shield construction method, a shield cutterhead assembly is set in the starting shaft, and the shield cutterhead assembly is used to perform shield excavation underground to form a tunnel. The strip is released into the starting shaft, and in the starting shaft, the strip is wound so that the strip presents a column spiral shape, and then the strip is connected into a whole to form a pipeline body. The shield cutterhead assembly rotates and excavates to form a tunnel, and at the same time, the pipeline body also rotates while going deeper into the tunnel. In this process, the wound strips are continuously connected to form a gradually lengthened pipeline body to meet the length requirement of the pipeline body when the pipeline body goes deeper into the tunnel, thereby lengthening the pipeline body while maintaining tunnel excavation, improving the construction efficiency of the pipeline shield construction, and reducing the construction cost of the pipeline shield construction.

[0085] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present application, and such modifications or substitutions should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A pipeline shield construction method, characterized in that: include: Setting up the shield cutterhead assembly in the departure shaft; releasing the strip material, so that the strip material enters the departure well; Winding the strip so that the strip is in a cylindrical spiral; Connecting the wound strip into a cylindrical shape to form a gradually lengthened pipe body; Driving the shield cutterhead assembly to excavate a tunnel; The pipe body is rotated and moved together with the shield cutterhead assembly so that the pipe body is screwed into the tunnel.

2. The pipeline shield construction method according to claim 1, characterized in that: The step of winding the strip includes applying a force to the strip while winding the strip so as to rotate the strip around the axis of the column spiral.

3. The pipeline shield construction method according to claim 1, characterized in that: The shield cutterhead assembly includes a first cutterhead and a second cutter arranged along the radial direction of the first cutterhead; The step of causing the shield cutterhead assembly to advance includes: causing the first cutterhead and the second cutter to rotate synchronously and advance, so that the first cutterhead forms the end face of the tunnel, and the second cutter forms the side wall of the tunnel having a spiral groove; The step of winding the strip includes: extruding the strip to form a strip protrusion; winding the strip so that the strip protrusions are bent together to form a spiral protrusion; and the spiral protrusion is engaged with the spiral groove.

4. The pipeline shield construction method according to claim 1, characterized in that: The strip comprises a material layer and an anti-corrosion layer, wherein the anti-corrosion layer is arranged on both sides of the material layer.

5. A pipeline, characterized in that: The pipeline is manufactured using the pipeline shield construction method according to any one of claims 1 to 4 and is set in a tunnel; the pipeline comprises: The pipeline body comprises a plurality of belt structures, each of which is in a spiral ring shape and arranged along the axis of the pipeline body. Two adjacent belt structures are fixedly connected.

6. The pipeline according to claim 5, characterized in that The pipe body includes a spiral protrusion protruding from the outside of the pipe body, and the spiral protrusion is used to be engaged with the spiral groove on the side wall of the tunnel.

7. The pipeline according to claim 5, characterized in that The belt structure includes a material layer and an anti-corrosion layer, and the anti-corrosion layer is arranged on both sides of the material layer.

8. A pipeline shield construction equipment, characterized in that: include: A shield mechanism comprises a shield cutterhead assembly and a rotating assembly; the shield cutterhead assembly is used to excavate a tunnel having an end face and a side wall; the rotating assembly is arranged on a side of the shield cutterhead assembly away from the end face, and is used to rotate a pipe body; The pipe body lengthening mechanism includes a winding assembly, a connecting assembly and a strip supply assembly. The strip supply assembly is used to release the strip, and the strip is connected to the end of the pipe body away from the end face; the winding assembly is arranged at the end of the pipe body away from the end face, and the winding assembly is used to wind part of the strip; the connecting assembly is used to connect the edge of the wound strip to the pipe body to lengthen the pipe body.

9. The pipeline shield construction equipment according to claim 8, characterized in that: The winding assembly includes a winding roller, which is used to squeeze the strip to make it wind, and the winding roller is used to apply force to the wound strip to make the pipe body and the wound strip rotate and move axially along the shield cutter head assembly.

10. The pipeline shield construction equipment according to claim 9, characterized in that: The shield cutterhead assembly includes a first cutterhead and a second cutter, wherein the first cutterhead is used for excavating to form the end face, and the second cutter is arranged along the radial direction of the first cutterhead, and the second cutter is used for forming the side wall with the spiral groove; The winding roller is provided with a protrusion, which is used to squeeze the strip to form a strip protrusion, so that after the strip is connected to the pipe body, the strip protrusion forms a spiral protrusion; the spiral protrusion is engaged with the spiral groove, so that the pipe body moves spirally along the spiral groove.

Images