Construction system and construction method for shield tunnel and connecting passage

Abstract

The present application provides a construction system and a construction method for a shield tunnel and a connection passage, including a shield tunnel, a connection passage, a first transport vehicle and a second transport vehicle. A transport track is provided in the shield tunnel. The transport track includes a single-track section, a double-track section and a double turnout. The single-track section and the double-track section are connected by the double turnout. The double-track section and the double turnout form a meeting area. The connection passage is vertically connected to the shield tunnel. The first transport vehicle slides in cooperation with the transport track, and the first transport vehicle is used for transporting construction materials of the shield tunnel. The second transport vehicle slides in cooperation with the transport track, and the second transport vehicle is used for transporting construction materials of the connection passage. The first transport vehicle and the second transport vehicle meet in the meeting area. The present application can realize the smooth passage of the first transport vehicle and the second transport vehicle, enable the construction processes of the shield tunnel and the connection passage to be carried out simultaneously, thereby improving the construction efficiency and shortening the construction period.

Description

Technical Field

[0001] This application relates to the technical field of subway construction, and particularly to a construction system and a construction method for shield tunnels and connecting passages. Background Art

[0002] During the construction of subway tunnels, a connecting passage needs to be set every 600 meters in the shield tunnel to connect two shield tunnels, which can play roles such as drainage, fire prevention, and escape.

[0003] Before the construction of the connecting passage, the shield tunnel needs to be supported by steel brackets to reinforce the segments of the shield tunnel and prevent the deformation of the segments from exceeding the limit when the connecting passage is being bored. However, the steel brackets often affect the operation of transport vehicles in the shield tunnel. Therefore, the connecting passage generally starts to be constructed after the completion of the shield tunnel construction to avoid affecting the normal construction of the shield tunnel.

[0004] However, this construction method often results in the connecting passage being constructed mostly in the final stage of the construction project, with a relatively short construction period and a prominent problem of tight construction schedule. Summary of the Invention

[0005] This application provides a construction system and a construction method for shield tunnels and connecting passages, which can achieve the smooth passage of the first transport vehicle and the second transport vehicle, enable the construction processes of the shield tunnel and the connecting passage to be carried out simultaneously, thereby improving the construction efficiency and shortening the construction period.

[0006] To solve the above technical problems, the following technical solutions are adopted in this application:

[0007] In the first aspect of this application, a construction system for shield tunnels and connecting passages is provided, including a shield tunnel, a connecting passage, a first transport vehicle, and a second transport vehicle. A transport track is provided in the shield tunnel. The transport track includes a single-track section, a double-track section, and a double turnout. The single-track section and the double-track section are connected by the double turnout. The double-track section and the double turnout form a meeting area. The connecting passage is vertically connected to the shield tunnel. The first transport vehicle slides in cooperation with the transport track and is used to transport the construction materials of the shield tunnel. The second transport vehicle slides in cooperation with the transport track and is used to transport the construction materials of the connecting passage. The first transport vehicle and the second transport vehicle meet in the meeting area.

[0008] During use, the double-track section and the double-opening turnout form a meeting area, creating two traffic paths, enabling the first transport vehicle and the second transport vehicle to meet in the meeting area. That is to say, the first transport vehicle and the second transport vehicle can respectively pass on the two traffic paths (the double-track section and the double-opening turnout), achieving their smooth passage. In this way, the first transport vehicle can be used in the construction process of the shield tunnel, and the second transport vehicle can be used in the construction process of the connecting passage, enabling the construction processes of the shield tunnel and the connecting passage to proceed simultaneously.

[0009] Compared with the prior art, the construction system of the shield tunnel and the connecting passage can achieve the smooth passage of the first transport vehicle and the second transport vehicle by setting a meeting area, enabling the construction processes of the shield tunnel and the connecting passage to proceed simultaneously, thereby improving construction efficiency and shortening the construction period.

[0010] In an embodiment of the present application, the height of the double-track section and the double-opening turnout is higher than that of the single-track section, and a connecting ramp is provided at one end of the single-track section close to the double-opening turnout.

[0011] In an embodiment of the present application, the slope of the connecting ramp is 1% to 2%.

[0012] In an embodiment of the present application, a support frame is provided in the shield tunnel. The support frame is provided with an operating space, and a horizontal track is provided in the operating space. The horizontal track is connected to the single-track section, and the operating space allows the first transport vehicle and the second transport vehicle to pass.

[0013] In an embodiment of the present application, the support frame includes a bottom cross beam, a top cross beam, a first vertical beam, a second vertical beam, and the horizontal track. The bottom cross beam is connected to the circumferential wall of the shield tunnel through bottom columns, the top cross beam is connected to the circumferential wall of the shield tunnel through top columns, the lower end of the first vertical beam is connected to the bottom cross beam, the upper end of the first vertical beam is connected to the top cross beam, the first vertical beam passes through the center of the shield tunnel, and an operating space is formed between the first vertical beam and the side of the shield tunnel away from the connecting passage. The operating space allows the first transport vehicle and the second transport vehicle to pass. The second vertical beam is located between the first vertical beam and the connecting passage. The lower end of the second vertical beam is connected to the bottom cross beam, the upper end of the second vertical beam is connected to the top cross beam, and the horizontal track is arranged on the bottom cross beam and within the operating space, and the horizontal track extends along the length direction of the shield tunnel.

[0014] In an embodiment of the present application, the meeting area is arranged at the entrance of the shield tunnel; and / or,

[0015] The meeting area is arranged near the connecting passage of the shield tunnel.

[0016] The second aspect of the present application provides a construction method for implementing the construction system of the shield tunnel and the communication channel of the first aspect, comprising the following steps:

[0017] S1: The shield machine is started, excavates a shield tunnel of a predetermined length, and then lays a corresponding single track for transportation by the first transport vehicle;

[0018] S2: The shield machine is stopped, and a portion of the single track laid in step S1 is removed at a predetermined position in the meeting area to form the single track section and a new installation position, and the double-opening turnout and the double track section are installed at the new installation position and connected with the single track section;

[0019] S3: The shield machine is restarted, and the shield tunnel is continued to be excavated forward, and the required construction materials are transported by the first transport vehicle, and the second transport vehicle is moved to the meeting area, so that the first transport vehicle and the second transport vehicle can meet each other in the meeting area;

[0020] S4: constructing and excavating a communication channel at a preset position of the communication channel, and using the second transport vehicle to transport the required construction materials and excavated earth;

[0021] S5: Repeat step S4 until the shield tunnel and the last connecting channel are completed. During this process, the meeting area is used to achieve the meeting of the first transport vehicle and the second transport vehicle.

[0022] In this construction method, two traffic paths are formed by setting up a meeting area, so that the first transport vehicle and the second transport vehicle during the construction process can travel on the two traffic paths (double-track section and double-opening turnout) respectively, thereby achieving smooth passage of the two. In this way, the first transport vehicle can be used for the construction process of the shield tunnel, and the second transport vehicle can be used for the construction process of the connecting channel, so that the construction processes of the shield tunnel and the connecting channel can be carried out simultaneously.

[0023] Compared with the existing technology, this construction method, through the setting of the meeting area, allows the first transport vehicle and the second transport vehicle to travel separately on two passages (double-track section and double-opening turnout), thereby achieving smooth passage of the two, so that the construction process of the shield tunnel and the connecting channel can be carried out simultaneously, thereby improving construction efficiency and shortening construction period.

[0024] In one embodiment of the present application, at the new installation position, the sleepers are raised so that the shield tunnel can meet the width installation requirements of the double-opening turnout and the double-track section, and is connected to the single-track section with a connecting inclined rail.

[0025] In an embodiment of the present application, the step S4 includes the step of erecting a support frame for supporting the shield tunnel. The support frame is provided with an operating space, and the operating space is provided with a horizontal track. The horizontal track is connected to the single-track section, and the operating space allows the first transport vehicle and the second transport vehicle to pass through.

[0026] In an embodiment of the present application, the passing area is arranged at the entrance of the shield tunnel; and / or,

[0027] The passing area is arranged near the connection passage of the shield tunnel. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 It is a layout schematic diagram of a construction system for a shield tunnel and a connection passage provided by an embodiment of the present application;

[0030] Figure 2 It is a structural schematic diagram of a construction system for a shield tunnel and a connection passage provided by an embodiment of the present application;

[0031] Figure 3 It is a three-dimensional structural schematic diagram of a support frame used in a construction system for a shield tunnel and a connection passage provided by an embodiment of the present application;

[0032] Figure 4 It is a method flow chart of a construction method for implementing a construction system for a shield tunnel and a connection passage provided by an embodiment of the present application.

[0033] Reference Signs:

[0034] 100, shield tunnel; 200, transport track; 210, single-track section; 220, double-track section; 230, double open switch; 240, passing area; 250, connecting inclined track; 300, connection passage; 400, first transport vehicle; 500, second transport vehicle; 600, support frame; 610, operating space; 620, horizontal track; 630, bottom cross beam; 631, bottom column; 640, top cross beam; 641, top column; 650, first vertical beam; 660, second vertical beam. Detailed Description of the Embodiments

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following clearly and completely describes the technical solutions in the embodiments of this application. Apparently, the described embodiments are some but not all of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts also belong to the scope of protection of this application.

[0036] In the description of this application, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of this application.

[0037] The terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0038] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] Figure 1 It is a layout schematic diagram of a construction system for a shield tunnel and a connection passage provided by an embodiment of this application. Figure 2 It is a structural schematic diagram of a construction system for a shield tunnel and a connection passage provided by an embodiment of this application. Figure 3 It is a three-dimensional structural schematic diagram of a support frame used in a construction system for a shield tunnel and a connection passage provided by an embodiment of this application. Figure 4 It is a method flow chart of a construction method for implementing a construction system for a shield tunnel and a connection passage provided by an embodiment of this application.

[0040] An embodiment of the first aspect of this application provides a construction system for a shield tunnel and a connection passage, as Figure 1 and Figure 2As shown in the figure, it includes a shield tunnel 100, a connecting passage 300, a first transport vehicle 400, and a second transport vehicle 500. Among them, the shield tunnel 100 is excavated by a shield machine, and the connecting passage 300 is excavated manually (that is, constructed by the mining method). The first transport vehicle 400 serves the excavation process of the shield tunnel 100 and can transport construction materials, etc. The second transport vehicle 500 serves the excavation process of the connecting passage 300 and can transport construction materials, etc.

[0041] As Figure 1 and Figure 2 shown in the figure, a transport track 200 is provided in the shield tunnel 100, and the transport track 200 meets the passing requirements of the first transport vehicle 400 and the second transport vehicle 500.

[0042] As Figure 1 and Figure 2 shown in the figure, the transport track 200 includes a single-track section 210, a double-track section 220, and a double turnout 230. The single-track section 210 and the double-track section 220 are connected by the double turnout 230, and the double-track section 220 and the double turnout 230 form a passing area 240. The single-track section 210 mentioned here refers to a single set of track sections, which actually includes two tracks to carry the first transport vehicle 400 and the second transport vehicle 500. Similarly, the double-track section 220 actually includes four tracks. In this way, in the single-track section 210, there is only one passing path, and in the double-track section 220, through the connection of the double turnout 230, there are two passing paths. The first transport vehicle 400 and the second transport vehicle 500 can pass each other in the double-track section 220.

[0043] As Figure 1 shown in the figure, the connecting passage 300 is vertically connected to the shield tunnel 100. Along the length direction of the shield tunnel 100, a connecting passage 300 needs to be set every 600 meters. Therefore, the number of connecting passages 300 is generally multiple.

[0044] The first transport vehicle 400 slides in cooperation with the transport track 200. The first transport vehicle 400 is used to transport the construction materials of the shield tunnel 100 to ensure the normal construction of the shield tunnel 100.

[0045] The second transport vehicle 500 slides in cooperation with the transport track 200. The second transport vehicle 500 is used to transport the construction materials of the connecting passage 300 to ensure the normal construction of the connecting passage 300.

[0046] It should be noted that the first transport vehicle 400 is generally a battery car formation vehicle, and the second transport vehicle 500 is generally a self-powered skip car. The wheel spacing of the two vehicles is the same and matches the distance between the two tracks in the single-track section 210, generally 900 mm.

[0047] During use, the double-track section 220 and the double turnout 230 form a passing area 240, creating two passing paths, enabling the first transport vehicle 400 and the second transport vehicle 500 to pass each other in the passing area 240. That is to say, the first transport vehicle 400 and the second transport vehicle 500 can pass separately on the two passing paths (the double-track section 220 and the double turnout 230), achieving their smooth passage. In this way, the first transport vehicle 400 can be used for the construction process of the shield tunnel 100, and the second transport vehicle 500 can be used for the construction process of the connecting passage 300, enabling the construction processes of the shield tunnel 100 and the connecting passage 300 to proceed simultaneously.

[0048] Compared with the prior art, the construction system of the shield tunnel and the connecting passage can achieve the smooth passage of the first transport vehicle 400 and the second transport vehicle 500 by setting the passing area 240, enabling the construction processes of the shield tunnel 100 and the connecting passage 300 to proceed simultaneously, thereby improving the construction efficiency and shortening the construction period.

[0049] Since the widths of the double-track section 220 and the double turnout 230 are greater than the width of the single-track section 210, in order to meet the installation requirements, in some embodiments, as Figure 2 shown, the heights of the double-track section 220 and the double turnout 230 are higher than the height of the single-track section 210, making the positions of the double-track section 220 and the double turnout 230 higher and the width of the shield tunnel 100 at the location wider, meeting the width installation requirements of the double-track section 220 and the double turnout 230. During actual construction, it can generally be achieved by raising the corresponding sleepers. A connecting ramp 250 is provided at one end of the single-track section 210 close to the double turnout 230, enabling the single-track section 210 and the double turnout 230 to be smoothly connected, facilitating the operation of the first transport vehicle 400 and the second transport vehicle 500.

[0050] In some embodiments, the slope of the connecting ramp 250 is 1% to 2%, with a relatively small slope, facilitating the passage of the first transport vehicle 400 and the second transport vehicle 500.

[0051] Before the construction of the connecting passage 300, it is necessary to support the shield tunnel 100 to reinforce the segments of the shield tunnel 100 and prevent the segments from deforming beyond the limit when the connecting passage 300 is being opened. Generally, it is achieved by using a steel support welded from steel, and this steel support cannot affect the passage of the first transport vehicle 400 and the second transport vehicle 500. Therefore, in some embodiments, as Figure 3As shown, a support frame 600 is provided inside the shield tunnel 100. The support frame 600 supports the shield tunnel 100 and supports and strengthens the segments of the shield tunnel 100. The support frame 600 is provided with an operating space 610. The width of the operating space 610 is greater than the widths of the first transport vehicle 400 and the second transport vehicle 500. The operating space 610 is provided with a horizontal track 620. The horizontal track 620 is connected to the single-track section 210. Therefore, the first transport vehicle 400 and the second transport vehicle 500 can move from the single-track section 210 to the horizontal track 620 and operate within the operating space 610 to pass through the support frame 600. In this way, the erection of the support frame 600 will not affect the normal passage of the first transport vehicle 400 and the second transport vehicle 500, ensuring the smooth progress of the construction.

[0052] Specifically, in some embodiments, as Figure 3 shown, the support frame 600 includes a bottom cross beam 630, a top cross beam 640, a first vertical beam 650, a second vertical beam 660, and a horizontal track 620 to form the general structure of the support frame 600.

[0053] The bottom cross beam 630 is connected to the circumferential wall of the shield tunnel 100 through a bottom column 631, and the top cross beam 640 is connected to the circumferential wall of the shield tunnel 100 through a top column 641 to achieve connection with the circumferential wall of the shield tunnel 100.

[0054] The lower end of the first vertical beam 650 is connected to the bottom cross beam 630, and the upper end of the first vertical beam 650 is connected to the top cross beam 640. The first vertical beam 650 passes through the center of the shield tunnel 100. That is to say, the first vertical beam 650 is located at the vertical axis of the entire shield tunnel 100, dividing the shield tunnel 100 into left and right parts.

[0055] The first vertical beam 650 and the side of the shield tunnel 100 away from the connection passage 300 form an operating space 610 (i.e., Figure 3 the left part in), and the width of the operating space 610 is greater than the widths of the first transport vehicle 400 and the second transport vehicle 500. Therefore, it can allow the first transport vehicle 400 and the second transport vehicle 500 to pass, providing space conditions for the passage of the first transport vehicle 400 and the second transport vehicle 500.

[0056] The second vertical beam 660 is located between the first vertical beam 650 and the connection passage 300. The lower end of the second vertical beam 660 is connected to the bottom cross beam 630, and the upper end of the second vertical beam 660 is connected to the top cross beam 640 to ensure the structural strength of the entire support frame 600.

[0057] The horizontal track 620 is arranged on the bottom cross beam 630 and is located within the operation space 610. The horizontal track 620 extends along the length direction of the shield tunnel 100, and provides a path condition for the passage of the first transport vehicle 400 and the second transport vehicle 500.

[0058] In this way, the support frame 600 not only realizes the support of the shield tunnel 100, but also allows the first transport vehicle 400 and the second transport vehicle 500 to pass through.

[0059] It should be noted that when supporting the shield tunnel 100, the number of support frames 600 is generally multiple, and they are arranged at intervals along the length direction of the shield tunnel 100. Moreover, the height of the horizontal track 620 is generally higher than that of the single-track section 210, and a track similar to the connecting inclined track 250 can be used to realize the connection between the horizontal track 620 and the single-track section 210.

[0060] In some embodiments, the meeting area 240 is arranged at the entrance of the shield tunnel 100 and / or the meeting area 240 is arranged near the connection passage 300 of the shield tunnel 100, which is convenient for the first transport vehicle 400 and the second transport vehicle 500 to meet. And because the length of the shield tunnel 100 is relatively long, several meeting areas 240 can be set according to the actual situation, and it is advisable to set them near the connection passage 300. In addition, a meeting area 240 can also be set in the shield launching shaft, which is more convenient for meeting.

[0061] The embodiment of the second aspect of the present application provides a construction method for implementing the construction system of the shield tunnel and the connection passage of the first aspect, as Figure 4 shown, including the following steps:

[0062] S1: The shield machine starts, excavates a shield tunnel 100 of a predetermined length, and lays a corresponding single track for the transportation of the first transport vehicle 400. After the shield machine starts, the single track is laid along with it so that the first transport vehicle 400 can transport construction materials. The predetermined length here should be able to meet the installation requirements of the subsequent double turnout 230 and double-track section 220, that is to say, the predetermined length should be at least greater than the total length of the double turnout 230 and the double-track section 220.

[0063] S2: The shield machine stops, and a part of the single track laid in step S1 is removed at a predetermined position in the meeting area 240 to form a single-track section 210 and a new installation position. The double turnout 230 and the double-track section 220 are installed at the new installation position and are connected to the single-track section 210. After removing a part of the single track, there is no track at the new installation position, providing an installation space for the installation of the double turnout 230 and the double-track section 220. After the double turnout 230 and the double-track section 220 are installed, they need to be connected to the single-track section 210 to form a complete passage path.

[0064] S3: Restart the shield machine and continue to drive forward the shield tunnel 100. Use the first transport vehicle 400 to transport the required construction materials, and at the same time move the second transport vehicle 500 to the passing area 240. The first transport vehicle 400 and the second transport vehicle 500 can pass each other in the passing area 240. After the passing area 240 is set up, the shield tunnel 100 can be continuously driven, and the first transport vehicle 400 and the second transport vehicle 500 can pass each other in the passing area 240.

[0065] S4: At the preset position of the connecting passage 300, construct the connecting passage 300 by driving, and use the second transport vehicle 500 to transport the required construction materials and the excavated soil. After the shield machine reaches the preset position of the connecting passage 300, the construction of the connecting passage 300 can be started. In this application, the mining method is used for the construction of the connecting passage 300, and the construction materials and the excavated soil can be transported by the second transport vehicle 500. In this way, the simultaneous construction of the shield tunnel 100 and the connecting passage 300 is realized.

[0066] S5: Repeat step S4 until the shield tunnel 100 and the last connecting passage 300 are constructed. During this process, the passing area 240 is used to realize the passing of the first transport vehicle 400 and the second transport vehicle 500. Generally, there are multiple connecting passages 300. Therefore, as the shield machine drives forward, the connecting passages 300 can be constructed one by one until the shield tunnel 100 and the last connecting passage 300 are both constructed.

[0067] It should be noted that in step S5, steps S2 and S3 can be repeated several times at appropriate positions, that is to say, several passing areas 240 can be set at appropriate positions. In this way, as the shield machine advances, the shield tunnel 100 becomes longer, and the passing positions of the first transport vehicle 400 and the second transport vehicle 500 also increase, making it more convenient for passing.

[0068] In this construction method, by setting up the passing area 240, two passing paths are formed, so that the first transport vehicle 400 and the second transport vehicle 500 during the construction process can pass respectively on the two passing paths (the double-track section 220 and the double open switch 230), realizing their smooth passing. In this way, the first transport vehicle 400 can be used for the construction process of the shield tunnel 100, and the second transport vehicle 500 can be used for the construction process of the connecting passage 300, enabling the construction processes of the shield tunnel 100 and the connecting passage 300 to be carried out simultaneously.

[0069] The following is an example to illustrate the passing process:

[0070] Assume that the first transport vehicle 400 transports construction materials from the opening of the shield tunnel 100 to the shield machine, and the second transport vehicle 500 is at the opening of a certain connecting passage 300. The specific passing process is as follows: When the first transport vehicle 400 moves towards the shield machine, the construction personnel can first move the second transport vehicle 500 to an adjacent passing area 240, that is, move the second transport vehicle 500 to one track of the double-track section 220 of an adjacent passing area 240 until the first transport vehicle 400 arrives at the passing area 240 and passes the second transport vehicle 500 through the other track of the double-track section 220. In this way, the first transport vehicle 400 can continue to move towards the shield machine through the connecting passage 300 and the second transport vehicle 500, and then move the second transport vehicle 500 to the opening of the connecting passage 300.

[0071] Compared with the prior art, through the setting of the passing area 240, the first transport vehicle 400 and the second transport vehicle 500 can pass respectively on two passing paths (the double-track section 220 and the double open switch 230), realizing their smooth passing, enabling the construction processes of the shield tunnel 100 and the connecting passage 300 to be carried out simultaneously, thereby improving the construction efficiency and shortening the construction period.

[0072] Since the widths of the double-track section 220 and the double open switch 230 are greater than the width of the single-track section 210, in order to meet the installation requirements, in some embodiments, at the new installation position, the sleeper is raised. For example, the sleeper can be raised by 150 mm, making the positions of the double-track section 220 and the double open switch 230 higher and the width of the shield tunnel 100 at the location wider, meeting the width installation requirements of the double-track section 220 and the double open switch 230. Then, the connecting ramp 250 is used to connect with the single-track section 210, enabling the single-track section 210 and the double open switch 230 to be smoothly connected, facilitating the operation of the first transport vehicle 400 and the second transport vehicle 500.

[0073] In some embodiments, the slope of the connecting ramp 250 is 1% to 2%, and the slope is small, facilitating the passage of the first transport vehicle 400 and the second transport vehicle 500.

[0074] Before the construction of the connecting passage 300, it is necessary to support the shield tunnel 100 to reinforce the segments of the shield tunnel 100 and avoid excessive deformation of the segments when the connecting passage 300 is opened. Generally, a steel support welded by steel is used for support, and the steel support cannot affect the passage of the first transport vehicle 400 and the second transport vehicle 500. Therefore, in some embodiments, the S4 step includes the step of erecting a support frame 600, and the support frame 600 is used to support the shield tunnel 100, such as Figure 3As shown, the support frame 600 is provided with an operating space 610. The operating space 610 is provided with a horizontal track 620. The horizontal track 620 is connected to the single-track section 210. The operating space 610 allows the first transport vehicle 400 and the second transport vehicle 500 to pass through, enabling the first transport vehicle 400 and the second transport vehicle 500 to pass through the support frame 600 and continue to run along the shield tunnel 100. In this way, the erection of the support frame 600 does not affect the normal passage of the first transport vehicle 400 and the second transport vehicle 500, ensuring the smooth progress of the construction.

[0075] Specifically, in some embodiments, as Figure 3 shown, the support frame 600 includes a bottom cross beam 630, a top cross beam 640, a first vertical beam 650, a second vertical beam 660, and a horizontal track 620 to form the general structure of the support frame 600.

[0076] The bottom cross beam 630 is connected to the circumferential wall of the shield tunnel 100 through a bottom column 631, and the top cross beam 640 is connected to the circumferential wall of the shield tunnel 100 through a top column 641, realizing the connection with the circumferential wall of the shield tunnel 100.

[0077] The lower end of the first vertical beam 650 is connected to the bottom cross beam 630, and the upper end of the first vertical beam 650 is connected to the top cross beam 640. The first vertical beam 650 passes through the center of the shield tunnel 100. That is to say, the first vertical beam 650 is located at the vertical axis of the entire shield tunnel 100, dividing the shield tunnel 100 into left and right parts.

[0078] The first vertical beam 650 and the side of the shield tunnel 100 away from the connection passage 300 form an operating space 610 (i.e., Figure 3 the left part in), and the width of the operating space 610 is greater than the widths of the first transport vehicle 400 and the second transport vehicle 500. Therefore, it can allow the first transport vehicle 400 and the second transport vehicle 500 to pass through, providing space conditions for the passage of the first transport vehicle 400 and the second transport vehicle 500.

[0079] The second vertical beam 660 is located between the first vertical beam 650 and the connection passage 300. The lower end of the second vertical beam 660 is connected to the bottom cross beam 630, and the upper end of the second vertical beam 660 is connected to the top cross beam 640, ensuring the structural strength of the entire support frame 600.

[0080] The horizontal track 620 is arranged on the bottom cross beam 630 and is located within the operating space 610. The horizontal track 620 extends along the length direction of the shield tunnel 100, providing path conditions for the passage of the first transport vehicle 400 and the second transport vehicle 500.

[0081] In this way, the support frame 600 not only supports the shield tunnel 100 but also allows the first transport vehicle 400 and the second transport vehicle 500 to pass through.

[0082] In some embodiments, the passing zone 240 is arranged at the entrance of the shield tunnel 100 and / or the passing zone 240 is arranged near the connecting passage 300 of the shield tunnel 100, which is convenient for the first transport vehicle 400 and the second transport vehicle 500 to pass each other. Moreover, due to the relatively long length of the shield tunnel 100, several passing zones 240 can be arranged according to the actual situation, and it is advisable to arrange them near the connecting passage 300. In addition, a passing zone 240 can also be arranged in the shield launching shaft, which is more convenient for passing each other.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A construction method for a construction system implementing a shield tunnel and a connecting passage, characterized in that, The construction system comprises: A shield tunnel, wherein a transport track is provided in the shield tunnel, wherein the transport track comprises a single track section, a double track section and a double turnout, wherein the single track section and the double track section are connected by the double turnout, and the double track section and the double turnout form a meeting area; A communication channel, wherein the communication channel is vertically connected to the shield tunnel; a first transport vehicle, the first transport vehicle slidingly cooperates with the transport track, and the first transport vehicle is used to transport construction materials of the shield tunnel; a second transport vehicle, the second transport vehicle slidingly cooperates with the transport track, and the second transport vehicle is used to transport construction materials of the communication channel; The first transport vehicle and the second transport vehicle meet at the meeting area; Wherein, the construction method comprises the following steps: S1: The shield machine is started, excavates a shield tunnel of a predetermined length, and then lays a corresponding single track for transportation by the first transport vehicle; S2: The shield machine is stopped, and a portion of the single track laid in step S1 is removed at a predetermined position in the meeting area to form the single track section and a new installation position, and the double-opening turnout and the double track section are installed at the new installation position and connected with the single track section; S3: The shield machine is restarted, and the shield tunnel is continued to be excavated forward, and the required construction materials are transported by the first transport vehicle, and the second transport vehicle is moved to the meeting area, so that the first transport vehicle and the second transport vehicle can meet each other in the meeting area; S4: constructing and excavating a communication channel at a preset position of the communication channel, and using the second transport vehicle to transport the required construction materials and excavated earth; S5: Repeat step S4 until the shield tunnel and the last communication channel are completed. During this process, the meeting area is used to achieve the meeting of the first transport vehicle and the second transport vehicle.

2. The construction method according to claim 1, characterized in that, The heights of the double-track section and the double-opening turnout are higher than the height of the single-track section, and a connecting inclined rail is provided at one end of the single-track section close to the double-opening turnout.

3. The construction method according to claim 2, wherein The slope of the connecting ramp is 1% to 2%.

4. The construction method according to claim 1, characterized in that, A support frame is provided in the shield tunnel, the support frame is provided with an operating space, the operating space is provided with a horizontal track, the horizontal track is connected to the monorail section, and the operating space allows the first transport vehicle and the second transport vehicle to pass.

5. The construction method according to claim 4, wherein The support frame includes a bottom cross beam, a top cross beam, a first vertical beam, a second vertical beam, and the horizontal track. The bottom cross beam is connected to the circumferential wall of the shield tunnel through bottom columns. The top cross beam is connected to the circumferential wall of the shield tunnel through top columns. The lower end of the first vertical beam is connected to the bottom cross beam, and the upper end of the first vertical beam is connected to the top cross beam. The first vertical beam passes through the center of the shield tunnel. The first vertical beam and the side of the shield tunnel away from the connection passage form the operation space, and the operation space allows the first transport vehicle and the second transport vehicle to pass through. The second vertical beam is located between the first vertical beam and the connection passage. The lower end of the second vertical beam is connected to the bottom cross beam, and the upper end of the second vertical beam is connected to the top cross beam. The horizontal track is arranged on the bottom cross beam and within the operation space, and the horizontal track extends along the length direction of the shield tunnel.

6. The construction method according to claim 4, characterized in that, The meeting area is arranged at the entrance of the shield tunnel; and / or, The meeting area is arranged at the shield tunnel near the connection passage.

7. The construction method according to any one of claims 1-6, characterized in that At the new installation position, raise the sleeper so that the shield tunnel can meet the width installation requirements of the double turnout and the double-track section, and connect the single-track section with a connecting inclined track.

8. The construction method according to any one of claims 1-6, characterized in that, The step S4 includes the step of erecting a support frame for supporting the shield tunnel. The support frame is provided with an operation space, the operation space is provided with a horizontal track, the horizontal track is connected to the single-track section, and the operation space allows the first transport vehicle and the second transport vehicle to pass through.

9. The construction method according to any one of claims 1-6, characterized in that, The meeting area is arranged at the entrance of the shield tunnel; and / or, The meeting area is arranged at the shield tunnel near the connection passage.

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