Combined pipe curtain machine and pipe curtain construction method

Abstract

The application relates to the technical field of tunnel construction, in particular to a combined pipe curtain machine and a pipe curtain construction method. The combined pipe curtain machine provided by the application comprises a combined tail shield structure and at least two tunneling main machines, the tunneling main machine is provided with a connecting shield body, and at least two first connecting parts are arranged on the connecting shield body; the combined tail shield structure comprises a straight-line combined tail shield and a corner combined tail shield, and is respectively used for straight-line point position and corner point position pipe curtain construction; the straight-line combined tail shield and the corner combined tail shield are respectively provided with at least two second connecting parts and at least two third connecting parts, and the second connecting parts and the third connecting parts are respectively detachably connected with the first connecting parts, so as to connect the straight-line combined tail shield or the corner combined tail shield with the tunneling main machine. The combined pipe curtain machine provided by the application can realize the engagement construction of multiple pipe curtain channels through single jacking, simultaneously solves the problem of mutual connection and water resistance between single pipe curtain channels, and improves the construction safety and the construction efficiency.

Description

Technical Field

[0001] This application relates to the field of tunnel construction technology, specifically to a combined pipe curtain machine and a pipe curtain construction method. Background Technology

[0002] With the acceleration of urbanization, large-scale underground structures are increasingly being built under urban roads or important buildings. To ensure that the construction of underground projects does not disrupt normal traffic, nor affect the normal use and structural safety of landmark buildings, it is essential to ensure that the ground surface does not settle during the construction of underground structures. The pipe jacking method, as an auxiliary construction method that can form an advanced pre-support system, can effectively solve the above problems.

[0003] In the existing technology, pipe jacking machines have emerged to achieve rapid and efficient construction of pipe jacking. During construction, the pipe jacking machine is usually placed at the starting point of the pipe jacking and drives the pipe sections one by one into the soil structure through its internal power system to form an underground pipe jacking structure.

[0004] However, in current pipe jacking construction, pipe jacking machines can only excavate a single pipe jacking channel at a time, and the water-proofing between the individual pipe jacking channels is a major engineering challenge, which restricts the safety, construction cost, and construction efficiency of the pipe jacking method. Summary of the Invention

[0005] This application provides a combined pipe curtain machine and a pipe curtain construction method to solve the problem that in current pipe curtain construction, the pipe curtain machine can only excavate a single pipe curtain channel at a time, resulting in low construction efficiency.

[0006] To achieve the above objectives, the technical solution of this application is as follows:

[0007] This application provides a combined pipe jacking machine, comprising a combined tail shield structure and at least two tunneling main units. The tunneling main units have connecting shield bodies, and the connecting shield bodies are provided with at least two first connecting parts. The combined tail shield structure includes a straight combined tail shield and a corner combined tail shield, which are used for pipe jacking construction at straight and corner locations, respectively. The straight combined tail shield and the corner combined tail shield are each provided with at least two second connecting parts and at least two third connecting parts, which are detachably connected to the first connecting parts to connect the straight or corner combined tail shield to the tunneling main unit.

[0008] In one possible implementation, the combined pipe jacking machine provided in this application includes a linear combined tail shield comprising a first circular steel structure and at least one first connecting body fixedly connected to the first circular steel structure. The end of the first circular steel structure away from the first connecting body is used to install a linear combined pipe section. At least two first connecting ends are provided at the end of the first circular steel structure near the first connecting body, and second connecting parts are evenly distributed on the first connecting ends so that the first connecting ends are detachably connected to the tunneling host in a one-to-one correspondence.

[0009] In one possible implementation, the combined pipe jacking machine provided in this application includes a corner-type combined tail shield comprising a second circular steel structure and at least one second connecting body fixedly connected to the second circular steel structure. The end of the second circular steel structure away from the second connecting body is used to install corner-type combined pipe sections. At least two second connecting ends are provided at the end of the second circular steel structure close to the second connecting body, and third connecting parts are evenly distributed on the second connecting ends so that the second connecting ends are detachably connected to the tunneling host in a one-to-one correspondence.

[0010] In one possible implementation, the combined tube curtain machine provided in this application has a mounting part on both the first connecting body and the second connecting body, and the mounting part is used to install the pilot tube.

[0011] In one possible implementation, the combined pipe jacking machine provided in this application has a gap between the installation part facing the tunneling host and the tunneling host, so as to allow the tunneling host to adjust its posture.

[0012] In one possible implementation, the combined tube curtain machine provided in this application has an openable and closable operating cabin in both the first connecting body and the second connecting body.

[0013] In one possible implementation, the combined pipe-jacking machine provided in this application further includes a front shield and a drive unit and a cutterhead mounted on the front shield, wherein the drive unit is used to drive the cutterhead to rotate.

[0014] In one possible implementation, the combined pipe curtain machine provided in this application further includes multiple hinged components. One end of the hinged component is hinged to the end of the front shield away from the cutterhead, and the other end of the hinged component is fixedly connected to the end of the connecting shield body away from the combined tail shield structure. The hinged components are used for correction of the tunneling host.

[0015] In one possible implementation, the combined tube curtain machine provided in this application includes a hinge assembly comprising a hinge cylinder and a hinge ring hinged to the hinge cylinder. The end of the hinge cylinder away from the connecting shield is hinged to the front shield, and the hinge cylinder is used to drive the front shield to adjust its attitude. The end of the hinge ring away from the front shield is fixed to the connecting shield, and the hinge ring is used to adapt to changes in the attitude of the front shield.

[0016] This application also provides a pipe jacking construction method, which uses the above-mentioned combined pipe jacking machine and includes the following steps:

[0017] Construction is carried out at the point to be excavated to form a pilot tunnel;

[0018] Select the use of straight-line combined tail shields for straight-line points, and select the use of corner combined tail shields for corner points;

[0019] Adjust the angle of the straight-line or corner-type combined tail shield;

[0020] The first connecting part of the tunneling machine is connected to the second connecting part of the straight-line combined tail shield. The guide tunnel is used to guide the tunneling of the tunneling machine so as to carry out pipe jacking construction at the straight-line points.

[0021] Alternatively, the first connecting part of the tunneling machine can be connected to the third connecting part of the corner-shaped combined tail shield, and the guide tunnel can be used to guide the tunneling of the tunneling machine to carry out pipe jacking construction at the corner-shaped points.

[0022] The combined pipe jacking machine and pipe jacking construction method provided in this application achieve ground excavation by setting up a tunneling machine. The combined tail shield structure includes a straight-type combined tail shield and a corner-type combined tail shield, used for pipe jacking construction at straight and corner locations, respectively. The tunneling machine has a connecting shield body, on which a first connecting part is provided. The straight-type and corner-type combined tail shields are respectively provided with a second connecting part and a third connecting part. The second and third connecting parts are detachably connected to the first connecting part. At the same time, the excavation angle of the straight-type or corner-type combined tail shield is adjustable, and the tunneling machine can connect to the straight-type or corner-type combined tail shield without rotation. Therefore, the straight-type and corner-type combined tail shields can achieve the construction of multiple pipe jacking channels in a single jacking operation under the excavation of the tunneling machine, improving construction efficiency. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the structure of the combined tube curtain machine provided in the embodiments of this application. Figure 1 ;

[0025] Figure 2 A schematic diagram of the structure of the combined tube curtain machine provided in the embodiments of this application. Figure 2 ;

[0026] Figure 3 A schematic diagram of the structure of the combined tube curtain machine provided in the embodiments of this application. Figure 3 ;

[0027] Figure 4 This is a schematic diagram of the structure of the linear combined tail shield in the combined tube curtain machine provided in the embodiments of this application;

[0028] Figure 5 This is a schematic cross-sectional view of the first circular steel structure in the combined tube curtain machine provided in the embodiments of this application;

[0029] Figure 6 This is a schematic diagram of the corner-type combined tail shield in the combined tube curtain machine provided in the embodiments of this application;

[0030] Figure 7 This is a schematic cross-sectional view of the second circular steel structure in the combined pipe curtain machine provided in the embodiments of this application;

[0031] Figure 8 A schematic cross-sectional view of a straight composite pipe section provided in an embodiment of this application;

[0032] Figure 9 A cross-sectional schematic diagram of a corner-type combined pipe section provided in an embodiment of this application;

[0033] Figure 10 for Figure 1 Schematic diagram of the structure of the tunnel boring machine;

[0034] Figure 11 A schematic diagram illustrating the arrangement of straight-line points and corner points provided in the embodiments of this application;

[0035] Figure 12 A flowchart of the pipe jacking construction method provided in the embodiments of this application.

[0036] Explanation of reference numerals in the attached figures:

[0037] 100-Combined tail shield structure;

[0038] 110 - Straight-line combined tail shield; 111 - Second connecting part; 112 - First connecting body; 113 - First circular steel structure; 1131 - First connecting end;

[0039] 120 - Corner-type combined tail shield; 121 - Third connecting part; 122 - Second connecting body; 123 - Second circular steel structure; 1231 - Second connecting end;

[0040] 130 - Installation Department;

[0041] 140 - Operations Cabin;

[0042] 200-Tunneling main unit;

[0043] 210 - Connecting shield body; 211 - First connecting part;

[0044] 220-Front Shield;

[0045] 230 - Drive component;

[0046] 240-Cutterhead;

[0047] 250 - Hinge assembly; 251 - Hinge cylinder; 252 - Hinge ring;

[0048] 300-line type points;

[0049] 400-Corner point;

[0050] 500-Straight-line composite pipe section;

[0051] 600-Corner type combined pipe section;

[0052] 700-preliminary catheter.

[0053] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the preferred embodiments of this application will be described in more detail below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0055] It should be noted that in the description of the embodiments of this application, the terms "upper", "lower", "inner", "outer" and other terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description, and are not intended to indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this application.

[0056] Furthermore, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0057] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0058] With the acceleration of urbanization, large-scale underground structures are increasingly being built under urban roads or important buildings. To ensure that the construction of underground projects does not disrupt normal traffic, nor affect the normal use and structural safety of landmark buildings, it is essential to ensure that the ground surface does not settle during the construction of underground structures. The pipe jacking method, as an auxiliary construction method that can form an advanced pre-support system, can effectively solve the above problems.

[0059] In existing technologies, pipe jacking construction generally uses small-diameter pipe jacking machines to construct pipe jacking groups, forming a horizontal steel pipe jacking for maintenance. It has the advantages of small excavation cross-section and flexible cross-section combination.

[0060] However, in current pipe jacking construction, pipe jacking machines can only excavate a single pipe jacking channel at a time, and the water-proofing between the individual pipe jacking channels is a major engineering challenge, especially for pipe jacking construction in water-rich strata, which greatly restricts the safety, construction cost, and construction efficiency of the pipe jacking method.

[0061] In view of this, the combined pipe jacking machine and pipe jacking construction method provided in this application achieves tunneling through the strata by setting up a tunneling host. The combined tail shield structure includes a straight-type combined tail shield and a corner-type combined tail shield, which are used for pipe jacking construction at straight and corner locations, respectively. The tunneling host has a connecting shield body, on which a first connecting part is provided. The straight-type and corner-type combined tail shields are respectively provided with a second connecting part and a third connecting part. The second and third connecting parts are detachably connected to the first connecting part. At the same time, the tunneling angle of the straight-type or corner-type combined tail shield is adjustable, and the tunneling host can connect with the straight-type or corner-type combined tail shield without rotation. Thus, the straight-type and corner-type combined tail shields can achieve the interlocking construction of multiple pipe jacking channels in a single jacking operation under the tunneling host, improving construction efficiency.

[0062] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0063] Figure 1 A schematic diagram of the structure of the combined tube curtain machine provided in the embodiments of this application. Figure 1 ; Figure 2A schematic diagram of the structure of the combined tube curtain machine provided in the embodiments of this application. Figure 2 ; Figure 3 A schematic diagram of the structure of the combined tube curtain machine provided in the embodiments of this application. Figure 3 ; Figure 4 This is a schematic diagram of the structure of the linear combined tail shield in the combined tube curtain machine provided in the embodiments of this application; Figure 5 This is a schematic cross-sectional view of the first circular steel structure in the combined tube curtain machine provided in the embodiments of this application; Figure 6 This is a schematic diagram of the corner-type combined tail shield in the combined tube curtain machine provided in the embodiments of this application; Figure 7 This is a schematic cross-sectional view of the second circular steel structure in the combined pipe curtain machine provided in the embodiments of this application; Figure 11 This is a schematic diagram illustrating the arrangement of straight-line and corner points provided in the embodiments of this application.

[0064] See Figures 1 to 11 This application provides a combined pipe jacking machine, including a combined tail shield structure 100 and at least two tunneling main units 200. The tunneling main unit 200 has a connecting shield body 210, and the connecting shield body 210 is provided with at least two first connecting parts 211. The combined tail shield structure 100 includes a straight combined tail shield 110 and a corner combined tail shield 120. The straight combined tail shield 110 and the corner combined tail shield 120 are respectively used for pipe jacking construction at straight point 300 and corner point 400. The straight combined tail shield 110 and the corner combined tail shield 120 are respectively provided with at least two second connecting parts 111 and at least two third connecting parts 121. The second connecting parts 111 and the third connecting parts 121 are detachably connected to the first connecting parts 211 to connect the straight combined tail shield 110 or the corner combined tail shield 120 to the tunneling main unit 200.

[0065] In practice, the straight-line combined tail shield 110 has a straight-line shape at the end facing away from the tunneling host 200 to accommodate the construction of straight-line points 300. The corner-type combined tail shield 120 has a corner-shaped shape at the end facing away from the tunneling host 200 to accommodate the construction of corner-type points 400.

[0066] Understandably, see Figures 1 to 3 The number of tunneling machines 200 can be set to multiple, and they can tunnel simultaneously to realize the construction of multiple pipe jacking channels. This embodiment does not limit this.

[0067] In some embodiments, the tunneling host 200 has a connecting shield 210, on which a first connecting part 211 is provided. The straight-line combined tail shield 110 and the corner combined tail shield 120 are respectively provided with a second connecting part 111 and a third connecting part 121, and the second connecting part 111 and the third connecting part 121 are detachably connected to the first connecting part 211. In other words, during construction, when construction is required at a straight point 300, a straight-type combined tail shield 110 is selected, and the angle of the straight-type combined tail shield 110 is adjusted according to construction requirements. Then, the tunneling host 200 is installed on the straight-type combined tail shield 110 through the connection of the first connecting part 211 and the second connecting part 111. Similarly, when construction is required at a corner point 400, a corner-type combined tail shield 120 is selected, and the angle of the corner-type combined tail shield 120 is adjusted according to construction requirements. Then, the tunneling host 200 is installed on the corner-type combined tail shield 120 through the connection of the first connecting part 211 and the second connecting part 111. That is to say, the point arrangement of the second connecting part 111 and the third connecting part 121 can adapt to the connection between the straight-type combined tail shield 110 and the corner-type combined tail shield 120 and the tunneling host 200 when they are rotated to different positions and angles. Thus, the tunneling host 200 can be connected to the straight-type combined tail shield 110 or the corner-type combined tail shield without rotation. The tunneling machine 200 can carry out the construction of multiple pipe jacking channels in a single jacking operation, which effectively improves construction efficiency.

[0068] Figure 8 A schematic cross-sectional view of a straight composite pipe section provided in an embodiment of this application.

[0069] See Figure 4 , Figure 5 and Figure 8 In this embodiment of the application, the linear combined tail shield 110 includes a first circular steel structure 113 and at least one first connecting body 112 fixedly connected to the first circular steel structure 113. The end of the first circular steel structure 113 away from the first connecting body 112 is used to install the linear combined pipe section 500. At least two first connecting ends 1131 are provided at the end of the first circular steel structure 113 close to the first connecting body 112. Second connecting parts 111 are evenly arranged on the first connecting ends 1131 so that the first connecting ends 1131 are detachably connected to the tunneling host 200 in a one-to-one correspondence.

[0070] In practice, the end of the first circular steel structure 113 furthest from the first connecting body 112 is used to install the straight-type combined pipe section 500. The shape of the end of the first circular steel structure 113 furthest from the first connecting body 112 is generally straight to accommodate the construction of the straight-type point 300. The straight-type combined pipe section 500 is a combined pipe section that matches the first circular steel structure 113. Thus, during construction, through the excavation of the tunneling host 200, the first circular steel structure 113 drives the straight-type combined pipe section 500 into the soil layer to form a straight-type combined pipe curtain channel.

[0071] It is understandable that the first circular steel structure 113 is provided with a first connecting end 1131 at one end near the first connecting body 112, and second connecting parts 111 are evenly arranged on the first connecting end 1131. The tunneling host 200 is installed one-to-one with the first connecting end 1131 through the connection of the first connecting part 211 and the second connecting part 111.

[0072] The number and layout of the first connection terminals 1131 are given only as examples, and can be set according to actual needs. This embodiment does not impose any restrictions on them.

[0073] Furthermore, the straight-line combined pipe section 500 can be composed of three interlocking pipe sections, or five or seven interlocking pipe sections. Correspondingly, the number of pipe sections that can be connected to the end of the first circular steel structure 113 away from the first connecting body 112 can also be adjusted accordingly. The structure and layout of the straight-line combined pipe section 500 are only provided as examples, and specific configurations can be made according to actual needs. This embodiment does not impose any limitations on this. Thus, by using the straight-line combined pipe section 500 composed of multiple interlocking pipe sections, the construction of multiple pipe curtain channels can be achieved in a single jacking operation under the tunneling host 200, solving the problem of difficulty in water-proofing the interconnection between individual pipe curtain channels in the prior art, and improving construction safety and efficiency.

[0074] Figure 9 This is a cross-sectional schematic diagram of a corner-type combined pipe section provided in an embodiment of this application.

[0075] See Figure 6 , Figure 7 and Figure 9 In this embodiment of the application, the corner-type combined tail shield 120 includes a second circular steel structure 123 and at least one second connecting body 122 fixedly connected to the second circular steel structure 123. The end of the second circular steel structure 123 away from the second connecting body 122 is used to install the corner-type combined pipe section 600. At least two second connecting ends 1231 are provided at the end of the second circular steel structure 123 close to the second connecting body 122. The third connecting part 121 is evenly arranged on the second connecting ends 1231 so that the second connecting ends 1231 are detachably connected to the tunneling host 200 in a one-to-one correspondence.

[0076] In some embodiments, the end of the second circular steel structure 123 away from the second connector 122 can be integrally corner-shaped to accommodate the construction of corner-shaped points 400. The corner-shaped combined pipe section 600 is a combined pipe section that matches the second circular steel structure 123. Thus, during construction, the second circular steel structure 123 drives the corner-shaped combined pipe section 600 into the soil layer through the excavation of the tunneling machine 200, thereby forming a corner-shaped combined pipe curtain channel.

[0077] The second circular steel structure 123 is provided with a second connecting end 1231 at one end near the second connecting body 122. The second connecting end 1231 is provided with third connecting parts 121 evenly arranged. The tunneling host 200 is installed in a one-to-one correspondence with the second connecting end 1231 by connecting the first connecting part 211 and the third connecting part 121.

[0078] In this application, the number and layout of the second connection terminals 1231 are given only as examples, and the specific configuration can be set according to actual needs. This embodiment does not impose any limitations on them.

[0079] Furthermore, the corner-type combined pipe section 600 can be configured as three interlocking pipe sections, or five or seven interlocking pipe sections. Correspondingly, the number of pipe sections that can be connected to the end of the second circular steel structure 123 away from the second connecting body 122 can also be adjusted accordingly. The structure and layout of the corner-type combined pipe section 600 are only provided as examples, and specific configurations can be made according to actual needs. This embodiment does not impose any limitations on this. Thus, by using the corner-type combined pipe section 600 formed by multiple interlocking pipe sections, the construction of multiple pipe curtain channels can be achieved in a single jacking operation under the tunneling host 200, solving the problem of difficult water-proofing between individual pipe curtain channels in the prior art, and improving construction safety and efficiency.

[0080] See Figure 1 , Figure 4 and Figure 6 In this embodiment of the application, both the first connector 112 and the second connector 122 are provided with a mounting part 130, which is used to install the pilot tube 700.

[0081] In this application, in order to connect the first connector 112 and the second connector 122 to the pilot tube 700 respectively, both the first connector 112 and the second connector 122 have a mounting part 130. The mounting part 130 serves as the mounting interface for the pilot tube 700, so that the pilot tube 700 can be mounted on the first connector 112 or the second connector 122 through the mounting part 130.

[0082] Among them, see Figures 1 to 3One guide pipe 700 can be set for single guide tunnel construction, or two guide pipes 700 can be set for double guide tunnel construction. Correspondingly, when one guide pipe 700 is set, the number of the first connector 112 and the second connector 122 is set to one each; when two guide pipes 700 are set, the number of the first connector 112 and the second connector 122 is set to two each.

[0083] It is understood that the number and layout of the first connector 112 and the second connector 122 are given only as examples, and can be set according to actual needs. This embodiment does not impose any limitations here.

[0084] See Figure 1 In this embodiment of the application, the side of the mounting part 130 facing the tunneling host 200 has a gap with the tunneling host 200 so that the tunneling host 200 can adjust its posture.

[0085] The purpose of setting a gap between the mounting section 130 and the tunneling machine 200 is to facilitate the attitude adjustment of the tunneling machine 200. In other words, when the stratum condition changes, the tunneling attitude of the tunneling machine 200 needs to be adjusted. The gap between the mounting section 130 and the tunneling machine 200 increases the freedom of attitude adjustment, allowing the tunneling machine 200 to better adapt to different working environments and ensuring its normal operation.

[0086] Meanwhile, the spacing between the installation unit 130 and the tunneling host 200 makes it more convenient for staff to carry out maintenance work, effectively improving work efficiency.

[0087] See Figure 1 , Figure 4 and Figure 6 In this embodiment of the application, both the first connecting body 112 and the second connecting body 122 are provided with an openable and closable operating cabin 140.

[0088] In practice, the operating cabin 140 provides operating space for staff. The operating cabin 140 has the ability to maintain pressure and enter the cabin under pressure, making the maintenance of the tunneling host 200 more convenient.

[0089] During construction, when the tunneling machine 200 needs to be inspected and maintained, the staff can carry out the inspection and maintenance work in a timely manner through the openable and closable operating cabin 140, which improves the safety of the combined pipe curtain machine and the work efficiency of the staff.

[0090] Figure 10 for Figure 1 A schematic diagram of the structure of the tunnel boring machine.

[0091] See Figure 1and Figure 10 In this embodiment of the application, the tunneling host 200 also includes a front shield 220 and a drive unit 230 and a cutterhead 240 mounted on the front shield 220. The drive unit 230 is used to drive the cutterhead 240 to rotate.

[0092] In some embodiments, the front shield 220 is the front structure of the tunneling host 200. The front shield 220 is used to guide and fix the position of the cutterhead 240 to ensure the accuracy of the tunneling direction.

[0093] It is understandable that the drive component 230 is a component used to drive the cutterhead 240 to rotate. The drive component 230 drives the cutter on the cutterhead 240 to perform cutting work, so as to realize the tunneling function of the tunneling host 200.

[0094] See Figure 1 and Figure 10 In this embodiment of the application, the tunneling host 200 also includes a plurality of hinge components 250. One end of the hinge component 250 is hinged to the end of the front shield 220 away from the cutterhead 240, and the other end of the hinge component 250 is fixedly connected to the end of the connecting shield body 210 away from the combined tail shield structure 100. The hinge component 250 is used for the correction of the tunneling host 200.

[0095] In order to adjust the attitude of the tunneling host 200 and prevent the tunneling host 200 from deviating from the tunneling direction, the tunneling host 200 is equipped with a hinge assembly 250. The hinge assembly 250 is located between the front shield 220 and the connecting shield 210, and is connected to the front shield 220 and the connecting shield 210 respectively.

[0096] It is understood that the number and layout of the hinge components 250 are given only as examples, and the specific configuration can be set according to actual needs. This embodiment does not impose any limitations on them.

[0097] See Figure 1 and Figure 10 In this embodiment, the articulation assembly 250 includes an articulation cylinder 251 and an articulation ring 252 articulated with the articulation cylinder 251. The end of the articulation cylinder 251 away from the connecting shield 210 is articulated with the front shield 220, and the articulation cylinder 251 is used to drive the front shield 220 to adjust its attitude. The end of the articulation ring 252 away from the front shield 220 is fixedly connected with the connecting shield 210, and the articulation ring 252 is used to adapt to the attitude change of the front shield 220.

[0098] In this application, due to uneven soil conditions, the tunneling machine 200 may deviate during tunneling. Therefore, the end of the articulated cylinder 251 furthest from the connecting shield 210 is hinged to the front shield 220, and the other end is hinged to the articulated ring 252. The end of the articulated ring 252 furthest from the articulated cylinder 251 is fixedly connected to the connecting shield 210. When correction of the tunneling machine 200 is required, the tunneling direction of the tunneling machine 200 is adjusted by controlling the extension and retraction of the articulated cylinder 251, while the articulated ring 252 is used to adapt to changes in the attitude of the front shield 220.

[0099] It is understandable that by setting the articulated cylinder 251 and the articulated ring 252, the tunneling host 200 can better adapt to complex terrain and construction environment, thereby improving the operating efficiency and construction quality of the tunneling host 200.

[0100] Figure 12 A flowchart of the pipe jacking construction method provided in the embodiments of this application.

[0101] See Figure 11 and Figure 12 Based on the above embodiments, this application also provides a pipe jacking construction method, which uses the above-mentioned combined pipe jacking machine. The pipe jacking construction method includes the following steps:

[0102] S101. Construction is carried out at the point to be excavated to form a pilot tunnel.

[0103] Understandably, the location of the point to be excavated is first determined, the excavation equipment is arranged at that location, the pilot tube 700 is installed on the excavation equipment, the excavation equipment is started to carry out the excavation work, and as the pilot tube 700 is pushed forward, a guide tunnel is formed on its path.

[0104] S102. Select the straight-line combined tail shield 110 based on the straight-line point 300, and select the corner combined tail shield 120 based on the corner point 400.

[0105] Specifically, during pipe jacking construction, when construction is required at a straight point 300, a straight-type combined tail shield 110 is used. Similarly, when construction is required at a corner point 400, a corner-type combined tail shield 120 is used.

[0106] S103. Adjust the angle of the straight-line combined tail shield 110 or the corner combined tail shield 120.

[0107] Understandably, during pipe jacking construction, there are multiple straight points 300 and corner points 400. Depending on the location of the straight points 300, the angle of the straight combined tail shield 110 needs to be adjusted. Similarly, depending on the location of the corner points 400, the angle of the corner combined tail shield 120 needs to be adjusted.

[0108] S104. Connect the first connecting part 211 of the tunneling host 200 to the second connecting part 111 of the straight-line combined tail shield 110, and use the guide tunnel to provide guidance for the tunneling of the tunneling host 200, so as to carry out pipe jacking construction at the straight-line point 300.

[0109] Alternatively, the first connecting part 211 of the tunneling host 200 can be connected to the third connecting part 121 of the corner-shaped combined tail shield 120, and the guide tunnel can be used to guide the tunneling of the tunneling host 200 to carry out pipe jacking construction at the corner-shaped point 400.

[0110] In this application, when constructing at a straight-line point 300, the tunneling machine 200 is mounted on the pre-adjusted angled straight-line combined tail shield 110 via the first connecting part 211 at the starting position. The straight-line combined tail shield 110 is then connected to the pilot guide 700, and the straight-line combined pipe section 500 is mounted on the straight-line combined tail shield 110. The tunneling machine 200 is started, and the pilot guide 700 provides guidance for its excavation, pushing the straight-line combined pipe section 500 into the construction point. After construction is completed, the tunneling machine 200 and the straight-line combined tail shield 110 are received at the ending position. The straight-line combined tail shield 110 and the tunneling machine 200 are moved to the next straight-line point 300, the angle of the straight-line combined tail shield 110 is adjusted, and construction is carried out at that straight-line point 300 until all straight-line points 300 are constructed.

[0111] Similarly, when constructing at corner point 400, at the starting position, the tunneling machine 200 is installed on the corner-shaped combined tail shield 120, which has been angled and adjusted, via the first connecting part 211. The corner-shaped combined tail shield 120 is then connected to the pilot guide 700, and the corner-shaped combined pipe section 600 is installed on the corner-shaped combined tail shield 120. The tunneling machine 200 is started, and the pilot guide 700 provides guidance for its excavation, pushing the corner-shaped combined pipe section 600 into the construction point. After construction is completed, the tunneling machine 200 and the corner-shaped combined tail shield 120 are received at the ending position. The corner-shaped combined tail shield 120 and the tunneling machine 200 are moved to the next corner point 400, the angle of the corner-shaped combined tail shield 120 is adjusted, and construction is carried out at that corner point 400 until all corner points 400 are constructed.

[0112] In summary, the combined pipe jacking machine and pipe jacking construction method provided in this application achieves tunneling of the strata by setting up a tunneling host 200. The combined tail shield structure 100 includes a straight combined tail shield 110 and a corner combined tail shield 120, which are used for pipe jacking construction at straight point 300 and corner point 400, respectively. The tunneling host 200 has a connecting shield body 210, on which a first connecting part 211 is provided. The straight combined tail shield 110 and the corner combined tail shield 120 are respectively provided with a second connecting part 111 and a third connecting part 121. The second connecting part 111 and the third connecting part 121 are detachably connected to the first connecting part 211. At the same time, the tunneling angle of the straight combined tail shield 110 or the corner combined tail shield 120 is adjustable, and the tunneling host 200 can be connected to the straight combined tail shield 110 or the corner combined tail shield 120 without rotation. Therefore, the straight-line combined tail shield 110 and the corner combined tail shield 120 can achieve the construction of multiple pipe curtain channels in a single jacking under the tunneling host 200, thus improving construction efficiency.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A combined tube curtain machine, characterized in that, It includes a combined tail shield structure (100) and at least two tunneling machines (200), the tunneling machine (200) having a connecting shield body (210), the connecting shield body (210) being provided with at least two first connecting parts (211). The combined tail shield structure (100) includes a straight combined tail shield (110) and a corner combined tail shield (120). The straight combined tail shield (110) and the corner combined tail shield (120) are used for pipe jacking construction at straight points (300) and corner points (400), respectively. The straight-line combined tail shield (110) and the corner combined tail shield (120) are respectively provided with at least two second connecting parts (111) and at least two third connecting parts (121). The second connecting parts (111) and the third connecting parts (121) are detachably connected to the first connecting part (211) to connect the straight-line combined tail shield (110) or the corner combined tail shield (120) to the tunneling host (200). The linear combined tail shield (110) includes a first circular steel structure (113) and at least one first connector (112) fixedly connected to the first circular steel structure (113). The end of the first circular steel structure (113) away from the first connector (112) is used to install the linear combined pipe section (500). The first circular steel structure is matched with the linear combined pipe section. The first round steel structure (113) has at least two first connecting ends (1131) at one end near the first connecting body (112), and the second connecting part (111) is evenly arranged on the first connecting end (1131) so that the first connecting end (1131) and the tunneling host (200) are detachably connected in a one-to-one correspondence; The corner-type combined tail shield (120) includes a second circular steel structure (123) and at least one second connector (122) fixedly connected to the second circular steel structure (123). The end of the second circular steel structure (123) away from the second connector (122) is used to install the corner-type combined pipe section (600). The second circular steel structure is matched with the corner-type combined pipe section. The second round steel structure (123) has at least two second connecting ends (1231) at one end near the second connecting body (122), and the third connecting part (121) is evenly arranged on the second connecting ends (1231) so that the second connecting ends (1231) and the tunneling host (200) are detachably connected in a one-to-one correspondence.

2. The combined tube curtain machine according to claim 1, characterized in that, Both the first connector (112) and the second connector (122) are provided with a mounting part (130), which is used to install the pilot tube (700).

3. The combined tube curtain machine according to claim 2, characterized in that, The mounting part (130) has a gap between its side facing the tunneling host (200) and the tunneling host (200) so that the tunneling host (200) can adjust its posture.

4. The combined tube curtain machine according to claim 3, characterized in that, Both the first connecting body (112) and the second connecting body (122) are provided with an openable and closable operating cabin (140).

5. The combined tube curtain machine according to any one of claims 1 to 4, characterized in that, The tunneling host (200) also includes a front shield (220) and a drive unit (230) and a cutterhead (240) mounted on the front shield (220), the drive unit (230) being used to drive the cutterhead (240) to rotate.

6. The combined tube curtain machine according to claim 5, characterized in that, The tunneling host (200) also includes a plurality of hinge components (250). One end of the hinge component (250) is hinged to the end of the front shield (220) away from the cutterhead (240), and the other end of the hinge component (250) is fixed to the end of the connecting shield (210) away from the combined tail shield structure. The hinge component (250) is used for the correction of the tunneling host (200).

7. The combined tube curtain machine according to claim 6, characterized in that, The articulation assembly (250) includes an articulation cylinder (251) and an articulation ring (252) articulated with the articulation cylinder (251). The end of the articulation cylinder (251) away from the connecting shield body (210) is articulated with the front shield (220). The articulation cylinder (251) is used to drive the front shield (220) to adjust its attitude. The hinge ring (252) is fixed to the connecting shield body (210) at one end away from the front shield (220), and the hinge ring (252) is used to adapt to the attitude changes of the front shield (220).

8. A method for constructing a pipe jacking system, characterized in that, The pipe jacking construction method, employing the combined pipe jacking machine according to any one of claims 1 to 7, comprises the following steps: Construction is carried out at the point to be excavated to form a pilot tunnel; The straight-line combined tail shield (110) is selected to be used based on the straight-line point (300), and the corner combined tail shield (120) is selected to be used based on the corner point (400). Adjust the angle of the straight-line combined tail shield (110) or the corner-type combined tail shield (120); The first connecting part (211) of the tunneling host (200) is connected to the second connecting part (111) of the straight-line combined tail shield (110), and the guide hole is used to guide the tunneling of the tunneling host (200) so as to carry out pipe curtain construction at the straight-line point (300). Alternatively, the first connecting part (211) of the tunneling host (200) can be connected to the third connecting part (121) of the corner-shaped combined tail shield (120), and the guide hole can be used to guide the tunneling of the tunneling host (200) to carry out pipe curtain construction at the corner-shaped point (400).

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