Method for tapping a runner

Abstract

This invention provides a method for muck removal in a connecting passage, comprising: when a tunnel boring machine (TBM) reaches the outer side of the tunnel, the TBM stops excavating, fixing the negative ring segment corresponding to the free end of the sleeve, removing the first reaction device and the corresponding negative ring segment, and then reinstalling the second reaction device; the TBM resumes excavation, assembling the corresponding positive ring segment, and the muck generated by the TBM is discharged from the channel between the first inner wall and the negative ring segment corresponding to the free end of the sleeve. Compared with traditional muck removal methods for connecting passages, this application increases the space for muck removal within the tunnel by removing the negative ring segment and the first reaction device and reinstalling the second reaction device, thus improving the convenience of muck removal in the connecting passage; at the same time, a larger capacity earth bucket can be used in the connecting passage, increasing the amount of muck discharged per bucket and improving the construction efficiency of the connecting passage.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of shield engineering, in particular to a method for discharging slag in a connecting passage. BACKGROUND

[0002] There are mainly two methods for tunnel connecting passage construction, i.e. the mine method and the mechanical method. The tunnel in the mine method needs to be reinforced in advance by freezing and grouting to avoid collapse during excavation. When the stratum is low in strength and poor in self-stability, such as soft soil and water-rich sand layer, the grouting reinforcement effect is not easy to guarantee, and the freezing method is high in cost. At this time, the mechanical method can be used to excavate the connecting passage. The traditional method for excavating the connecting tunnel is to start from the design position of the connecting passage after the main tunnel construction is completed, and to excavate towards the other side tunnel to form the connecting passage by using a small shield machine or a pipe jacking machine. However, in the process of constructing the connecting passage, the slag discharge passage is narrow and inconvenient to operate, and the narrow slag discharge passage limits the size of the soil bucket, resulting in small amount of slag discharged at a time and low construction efficiency of the connecting passage. SUMMARY

[0003] Therefore, it is necessary to provide a method for discharging slag in a connecting passage to solve the problems of narrow slag discharge passage, inconvenient operation, limited size of the soil bucket, small amount of slag discharged at a time and low construction efficiency of the connecting passage in the process of constructing the connecting passage.

[0004] The technical scheme is as follows:

[0005] In one aspect, a method for discharging slag in a connecting passage is provided, comprising:

[0006] After the shield machine is moved to the construction position in the tunnel by the trolley, the trolley is in abutting engagement with the inner wall of the tunnel, the free end of the sleeve is in sealing engagement with the outer wall of the shield machine, the fixed end of the sleeve is fixedly connected and in sealing engagement with the corresponding position of the inner wall of the tunnel, and the two sides of the first counterforce device are respectively connected to the shield tail of the shield machine and the first inner side wall of the tunnel.

[0007] The shield machine starts to excavate, and the negative ring segment corresponding to the free end of the sleeve is assembled from the end of the first counterforce device close to the shield machine, and the slag generated by the shield machine is discharged from the channel between the negative ring segment and the first inner side wall.

[0008] When the shield machine excavates to the outside of the tunnel, the shield machine stops excavating, the negative ring segment corresponding to the free end of the sleeve is fixed, the first counterforce device and the negative ring segment between the first counterforce device and the free end of the sleeve are removed, and the second counterforce device is correspondingly arranged between the first inner side wall and the negative ring segment corresponding to the free end of the sleeve.

[0009] The shield machine starts tunneling again and assembles the positive annular segment corresponding to the free end of the sleeve, and the discharge of the shield machine is discharged from the channel between the first inner side wall and the negative annular segment corresponding to the free end of the sleeve.

[0010] The technical solutions are further described below:

[0011] In one of the embodiments, after the step of starting tunneling by the shield machine and assembling the negative annular segment from the side of the first counterforce device close to the shield machine, and discharging the discharge of the shield machine from the channel between the negative annular segment and the first inner side wall, further comprising:

[0012] When the shield machine needs to splice the negative annular segment corresponding to the free end of the sleeve, a connecting segment is transported to the shield machine so that the connecting segment is arranged corresponding to the free end of the sleeve;

[0013] When the connecting segment is spliced, a positive annular segment is transported to the shield machine so that the shield machine can start splicing the positive annular segment along the connecting segment.

[0014] In one of the embodiments, in the step of transporting a connecting segment to the shield machine when the shield machine needs to splice the negative annular segment corresponding to the free end of the sleeve, so that the connecting segment is arranged corresponding to the free end of the sleeve, comprising:

[0015] When the shield machine needs to splice the negative annular segment corresponding to the free end of the sleeve, a connecting segment is transported to the shield machine so that the connecting segment is arranged corresponding to the free end of the sleeve.

[0016] In one of the embodiments, in the step of transporting a connecting segment to the shield machine when the shield machine needs to splice the negative annular segment corresponding to the free end of the sleeve, so that the connecting segment is arranged corresponding to the free end of the sleeve, comprising:

[0017] When the shield machine tunnels to the outside of the tunnel, the shield machine stops tunneling, the two ends of the bending piece are connected to the connecting segment and the sleeve respectively, so that the bending piece can limit the movement of the connecting segment relative to the sleeve in the direction close to the first inner side wall;

[0018] When the bending piece is installed, the first counter-force device and the negative ring segment between the first counter-force device and the connecting segment are removed, and a second counter-force device is arranged between the first inner side wall and the connecting segment.

[0019] In one embodiment, when the tunneling machine tunnels to the outside of the tunnel, the tunneling machine stops tunneling, and the two ends of the bending piece are connected to the connecting segment and the sleeve, respectively, so that the bending piece can limit the movement of the connecting segment relative to the sleeve in the direction of approaching the first inner side wall.

[0020] When the tunneling machine tunnels to the outside of the tunnel, the tunneling machine stops tunneling, and one end of the bending piece is connected to the sliding groove arranged on the connecting segment along the axis direction of the sleeve.

[0021] The bending piece is driven to slide relative to the sliding groove, so that one end of the bending piece is in contact with the inner wall of one end of the sliding groove, and the other end of the bending piece is inserted into the socket on the sleeve, and then the bending piece is locked to the sleeve by the locking piece, so as to limit the movement of the connecting segment relative to the sleeve in the direction of approaching the first inner side wall.

[0022] In one embodiment, after the step of connecting the two ends of the bending piece to the connecting segment and the sleeve, respectively, so that the bending piece can limit the movement of the connecting segment relative to the sleeve in the direction of approaching the first inner side wall, the method further comprises:

[0023] When the tunneling machine tunnels to the outside of the tunnel, grouting is performed to the gap between the shield tail of the tunneling machine and the inner wall of the connecting passage, so as to seal and connect the tunneling machine and the inner wall of the connecting passage.

[0024] In one embodiment, after the bending piece is installed, the first counter-force device and the negative ring segment between the first counter-force device and the connecting segment are removed, and a second counter-force device is arranged between the first inner side wall and the connecting segment.

[0025] After the bending piece is installed, the first counter-force device and the negative ring segment between the first counter-force device and the connecting segment are removed, and a second counter-force device with an extension piece is arranged between the first inner side wall and the connecting segment.

[0026] The extension piece is driven to elongate, so that the second counter-force device is in contact with the connecting segment.

[0027] In one of the embodiments, after the step of driving the telescopic member to elongate so that the second counterforce device is in abutting engagement with the connecting segment, further comprising:

[0028] The two ends of the bending member are respectively disengaged from the corresponding connections of the connecting segment and the sleeve.

[0029] In one of the embodiments, after the step of the shield machine starting to excavate again and assembling the positive ring segment in correspondence, and the discharge from the channel between the first inner side wall and the negative ring segment arranged in correspondence with the free end of the sleeve, further comprising:

[0030] A belt conveyor is arranged at the bottom of the channel between the first inner side wall and the negative ring segment arranged in correspondence with the free end of the sleeve.

[0031] The shield machine starts to excavate again and assembles the positive ring segment in correspondence, and the discharge from the channel between the first inner side wall and the negative ring segment arranged in correspondence with the free end of the sleeve is discharged onto the belt conveyor so that the discharge is transported to the transport vehicle by the belt conveyor.

[0032] In one of the embodiments, after the step of the shield machine starting to excavate again and assembling the positive ring segment in correspondence, and the discharge from the channel between the first inner side wall and the negative ring segment arranged in correspondence with the free end of the sleeve is discharged onto the belt conveyor so that the discharge is transported to the transport vehicle by the belt conveyor, further comprising:

[0033] The shield machine starts to excavate again and assembles the positive ring segment in correspondence, and the discharge from the shield machine is discharged onto the side-discharging trolley.

[0034] The side-discharging trolley can transport the discharge to the channel between the first inner side wall and the negative ring segment arranged in correspondence with the free end of the sleeve, and dump the discharge onto the belt conveyor so that the discharge is transported to the transport vehicle by the belt conveyor.

[0035] Compared with the conventional discharge method of the communication passage, the discharge method of the communication passage in the present application has at least the following advantages: (1) When the shield machine excavates to the outside of the tunnel, by removing the first counterforce device and the negative ring segment between the first counterforce device and the negative ring segment arranged in correspondence with the free end of the sleeve, and reinstalling the second counterforce device, the space for discharge in the tunnel is increased, and the convenience of discharge in the communication passage is improved. (2) The operation space for discharge in the tunnel is increased, a larger capacity soil bucket can be used, the amount of single discharge of the soil bucket is increased, and the construction efficiency of the communication passage is improved. BRIEF DESCRIPTION OF DRAWINGS

[0036] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification. The illustrations are given for the purposes of explaining and

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the accompanying drawings needed to be used in the embodiments description will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these accompanying drawings without creative effort.

[0038] Figure 1 Flow chart of the tapping method of the communication passage of one embodiment;

[0039] Figure 2 Flow chart of the tapping method of the communication passage of another embodiment;

[0040] Figure 3 Flow chart of the tapping method of the communication passage of still another embodiment;

[0041] Figure 4 Structural schematic diagram of the communication passage excavation system of one embodiment at the initial excavation;

[0042] Figure 5 Structural schematic diagram of the communication passage excavation system of Figure 4 from another perspective;

[0043] Figure 6 Structural schematic diagram of the communication passage excavation system of Figure 4 before the first counterforce device and the negative ring segment are disassembled;

[0044] Figure 7 Structural schematic diagram of the communication passage excavation system of Figure 4 after the first counterforce device and the negative ring segment are disassembled;

[0045] Figure 8 Structural schematic diagram of the communication passage excavation system of Figure 7 from another perspective;

[0046] Figure 9 Structural schematic diagram of the communication passage excavation system of Figure 4 after the second counterforce device is installed;

[0047] Figure 10 Structural schematic diagram of the communication passage excavation system of Figure 9 from another perspective.

[0048] Explanation of reference signs:

[0049] 10, the contact channel excavation system; 100, the shield machine; 110, the shield tail; 200, the trolley; 210, the telescopic arc-shaped support plate; 300, the tunnel; 310, the first inner side wall; 400, the sleeve; 410, the free end; 420, the fixed end; 430, the socket; 500, the first counter-force device; 610, the negative ring segment; 620, the positive ring segment; 700, the second counter-force device; 800, the connecting segment; 900, the bending piece; 1000, the locking piece; 1100, the contact channel; 1200, the belt conveyor; 1300, the side-dumping trolley. DETAILED DESCRIPTION

[0050] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the scope of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0051] As shown in Figure 1 , in one embodiment, a method for slagging of a contact channel 1100 is provided, comprising the following steps:

[0052] As shown in Figure 4 and Figure 5 , S100, the shield machine 100 moves to the construction position in the tunnel 300 by the trolley 200, the trolley 200 is in contact with the inner wall of the tunnel 300, the free end 410 of the sleeve 400 is in sealing cooperation with the outer wall of the shield machine 100, the fixed end 420 of the sleeve 400 is fixedly connected and sealingly cooperated with the corresponding position of the inner wall of the tunnel 300, and the two sides of the first counter-force device 500 are respectively connected with the shield tail 110 of the shield machine 100 and the first inner side wall 310 of the tunnel 300. In this way, the shield machine 100 is correspondingly installed at the construction position in the tunnel 300, so as to ensure that the shield machine 100 can stably and reliably excavate to form the contact channel 1100.

[0053] It should be noted that the contact between the trolley 200 and the inner wall of the tunnel 300 can be in the circumferential direction of the tunnel 300, and the four sides of the trolley 200 are provided with telescopic arc-shaped support plates 210, the profile of the telescopic arc-shaped support plates 210 matches the profile of the inner wall of the tunnel 300, when the shield machine 100 moves to the construction position in the tunnel 300 by the trolley 200, all the telescopic arc-shaped support plates 210 are elongated, so that the trolley 200 is in contact with the four sides of the inner wall of the tunnel 300. In this way, the reliability and stability of the shield machine 100 excavation are improved.

[0054] It should be noted that the sleeve 400 can be a steel sleeve 400. In this way, the steel sleeve 400 can prevent water and soil from outside the tunnel 300 from flowing into the tunnel 300 after the tunnel boring machine 100 cuts the lining of the tunnel 300.

[0055] It should be noted that the free end 410 of the sleeve 400 can slide against the outer wall of the tunnel boring machine 100, which is completed before the tunnel boring machine 100 moves into the tunnel 300. In this way, the sleeve 400 can move into the tunnel 300 together with the tunnel boring machine 100, avoiding interference between the sleeve 400 and the inner wall of the tunnel 300 during installation, thus improving the convenience of sleeve 400 installation.

[0056] It should be noted that the free end 410 of the sleeve 400 is sealed to the outer wall of the tunnel boring machine 100, which can be achieved by using a wire brush and tail grease. The fixed end 420 of the sleeve 400 is fixedly connected and sealed to the corresponding position of the inner wall of the tunnel 300. A mounting bracket can be provided at the corresponding position where the inner wall of the tunnel 300 connects to the connecting passage 1100, and the fixed end 420 is fixedly connected to the mounting bracket.

[0057] It should be noted that the first inner wall 310 refers to the inner wall of the tunnel 300 away from the sleeve 400 after the shield machine 100 is installed. Specifically, in this embodiment, the trolley 200 is provided with a first telescopic arc-shaped support plate on the side near the first inner wall 310, and the first telescopic arc-shaped support plate can abut against the first inner wall 310.

[0058] It should be noted that this application uses the example of the first reaction device 500 being connected to the tail 110 of the tunnel boring machine 100 and the first inner wall 310 of the tunnel 300 on both sides respectively for illustration. In other embodiments, the first reaction device 500 can also be connected to the tail 110 of the tunnel boring machine 100 and the first telescopic arc-shaped support plate on both sides. The principle is the same as or similar to the connection of the first reaction device 500 to the tail 110 of the tunnel boring machine 100 and the first inner wall 310 of the tunnel 300 respectively, and will not be described in detail here.

[0059] like Figure 4 and Figure 6 As shown, at S200, the tunnel boring machine 100 begins excavation, and the negative ring segment 610 is assembled from the side of the first reaction device 500 closest to the tunnel boring machine 100. The slag generated by the tunnel boring machine 100 is discharged through the channel between the negative ring segment 610 and the first inner wall 310. In this way, the reaction force of the tunnel boring machine 100 during its advancement is transmitted through the negative ring segment 610 to the first reaction device 500, and further to the lining of the tunnel 300, ensuring stable and reliable excavation of the tunnel boring machine 100.

[0060] It should be noted that, according to the traditional muck removal method for the connecting passage 1100, the 6m diameter tunnel 300 is constructed using mechanical methods. The diameter of the tunnel boring machine 100 used for the construction of the connecting passage 1100 is usually around 3m, and the length of the tunnel boring machine 100 is around 4m. After the 4m long tunnel boring machine 100 and the telescopic arc support plate 210 are placed into the tunnel 300, they almost fill the entire cross-section of the tunnel 300, leaving less than 1m of space behind the shield tail 110 of the tunnel boring machine 100 for muck removal and transportation of the negative ring segment 610.

[0061] It should be noted that during the excavation of the traditional connecting passage 1100, due to the short total length of the connecting passage 1100, the friction between the stratum and the negative ring segment 610 is insufficient to balance the reaction force when the shield machine 100 advances. Therefore, the negative ring segment 610 and the first reaction device 500 must be retained throughout the entire excavation process and removed after the tunnel is completed.

[0062] like Figure 4 and Figure 6 As shown in step S500, when the tunnel boring machine 100 needs to splice the negative ring segment 610 corresponding to the free end 410 of the sleeve 400, a connecting segment 800 is transported to the tunnel boring machine 100 so that the connecting segment 800 is corresponding to the free end 410 of the sleeve 400. Thus, the connecting segment 800 is positioned corresponding to the free end 410 of the sleeve 400 to temporarily fix the connecting segment 800 to the sleeve 400.

[0063] Specifically, in this embodiment, the connecting tube segment 800 refers to the negative ring tube segment 610 which has a connecting part for fixedly engaging with the sleeve 400.

[0064] like Figure 2 , Figure 4 and Figure 6 As shown, specifically in this embodiment, in step S510, when the tunnel boring machine 100 needs to splice the negative ring segment 610 corresponding to the free end 410 of the sleeve 400, a connecting segment 800 is transported to the tunnel boring machine 100, so that the end of the connecting segment 800 near the first inner wall 310 corresponds to the free end 410 of the sleeve 400. In this way, the connecting segment 800 can be located inside the sleeve 400, avoiding the connecting segment 800 occupying additional installation space within the tunnel 300, and ensuring a large gap between the connecting segment 800 and the first inner wall 310 for the discharge of excavated soil from the connecting passage 1100.

[0065] It should be noted that, compared with the sleeve 400 in the conventional scheme, the sleeve 400 in the embodiment has a shorter length, facilitating the later removal of the negative ring segment 610 and replacement of the first counterforce device 500, while also ensuring that a larger spacing is left between the connecting segment 800 and the first inner side wall 310. In addition, the length of the sleeve 400 needs to satisfy that the fixed end 420 of the sleeve 400 is just flush or nearly flush with the circumferential joint of the connecting segment 800, so as to meet the requirement of temporarily fixing the connecting segment 800 when the negative ring segment 610 is removed.

[0066] It should be noted that the end of the connecting segment 800 away from the first inner side wall 310 is located in the sleeve 400. In this way, when the communication passage 1100 is constructed, both the connecting segment 800 and the sleeve 400 can be removed for recycling.

[0067] As shown in Figure 6 , S600, after the connecting segment 800 is spliced, the positive ring segment 620 is transported to the shield machine 100, so that the shield machine 100 can start splicing the positive ring segment 620 along the connecting segment 800. In this way, the counterforce when the shield machine 100 advances can be transmitted to the lining of the tunnel 300 through the positive ring segment 620, the connecting segment 800, the negative ring segment 610 and the first counterforce device 500, improving the reliability and stability of the continuous tunneling of the shield machine 100.

[0068] It should be noted that the structure and shape of the positive ring segment 620 can be the same as or different from those of the negative ring segment 610.

[0069] As shown in Figure 4 , and Figure 6 to Figure 9 , S300, when the shield machine 100 advances to the outside of the tunnel 300, the shield machine 100 stops advancing, fixes the negative ring segment 610 arranged corresponding to the free end 410 of the sleeve 400, removes the first counterforce device 500 and the negative ring segment 610 between the first counterforce device 500 and the negative ring segment 610 arranged corresponding to the free end 410 of the sleeve 400, and then arranges the second counterforce device 700 corresponding to the first inner side wall 310 and the negative ring segment 610 arranged corresponding to the free end 410 of the sleeve 400. In this way, by replacing the first counterforce device 500 with the second counterforce device 700, the space for discharging residue in the tunnel 300 is increased, improving the convenience of discharging residue in the communication passage 1100.

[0070] As shown in Figure 2 , Figure 4 , and Figure 6As shown, specifically to the embodiment, S310, when the shield tunneling machine 100 excavates to the outside of the tunnel 300, the shield tunneling machine 100 stops excavation, and connects the two ends of the bending piece 900 to the connecting segment 800 and the sleeve 400 respectively, so that the bending piece 900 can limit the movement of the connecting segment 800 relative to the sleeve 400 in the direction of approaching the first inner side wall 310. In this way, the bending piece 900 can ensure that the position of the connecting segment 800 relative to the sleeve 400 remains fixed after the shield tunneling machine 100 stops excavation, so as to avoid the shield tunneling machine 100 and the negative ring segment 610 in the communication passage 1100 retreating together under the action of the earth pressure, causing the earth pressure to decrease, the shield tail 110 to be damaged, the negative ring segment 610 to be damaged, or water and soil to leak, etc., and ensuring that the shield tunneling machine 100 can normally excavate after the second counterforce device 700 is replaced.

[0071] It should be noted that when the shield tail 110 of the shield tunneling machine 100 just leaves the tunnel 300 and enters the stratum, the shield tunneling machine 100 stops excavation. In this way, the length of the initial excavation of the shield tunneling machine 100 is reduced, so that the amount of muck that needs to be discharged from the passage between the negative ring segment 610 and the first inner side wall 310 is also reduced, thereby reducing the workload of manual auxiliary muck discharge.

[0072] As shown in Figure 3 , Figure 6 and Figure 7 , further, S311, when the shield tunneling machine 100 excavates to the outside of the tunnel 300, the shield tunneling machine 100 stops excavation, and connects one end of the bending piece 900 to the sliding groove provided on the connecting segment 800 in the axial direction of the sleeve 400. In this way, the sliding connection of the bending piece 900 and the sliding groove is used to facilitate the movement of the other end of the bending piece 900 to the position corresponding to the sleeve 400.

[0073] It should be noted that one end of the sliding groove extends to one end of the connecting segment 800 close to the first inner side wall 310. In this way, the processing of the connecting segment 800 is facilitated.

[0074] It should be noted that the connecting segment 800 does not enter the stratum, and the size of the sliding groove is small, so as not to cause the strength of the connecting segment 800 to be greatly weakened or water and soil to leak, etc.

[0075] As shown in Figure 6 , Figure 7 and Figure 8As shown, S312, the driving of the bending piece 900 relative to the sliding groove is slid, so that one end of the bending piece 900 is in contact with the inner wall of one end of the sliding groove, and the other end of the bending piece 900 is inserted into the socket 430 on the sleeve 400, and then the locking piece 1000 is locked with the bending piece 900 and the socket 430, so as to limit the movement of the connecting pipe piece 800 relative to the sleeve 400 along the direction close to the first inner side wall 310. In this way, the connecting pipe piece 800 can be locked with the sleeve 400 through the bending piece 900 and the locking piece 1000, so as to ensure that the connecting pipe piece 800 will not retreat during the replacement of the second counter-force device 700, thereby improving the reliability and stability of the construction of the communication passage 1100.

[0076] It should be noted that the outer wall of the sleeve 400 is provided with a socket 430 corresponding to the sliding groove, the socket 430 is provided with a socket opening corresponding to the other end of the bending piece 900, the socket opening is used for inserting the other end of the bending piece 900, along the axis direction of the sleeve 400, the socket 430 is provided with a first through hole, the bending piece 900 is provided with a second through hole corresponding to the first through hole, and the locking piece 1000 is a bolt, which can pass through the first through hole and the second through hole and lock the bending piece 900 and the socket 430. In this way, the reliability of the fixed connection between the bending piece 900 and the socket 430 is improved.

[0077] S320, when the shield tunneling machine 100 excavates to the outside of the tunnel 300, grouting is performed to the gap between the shield tail 110 of the shield tunneling machine 100 and the inner wall of the communication passage 1100, so as to seal and connect the shield tunneling machine 100 and the inner wall of the communication passage 1100. In this way, the water and soil in the communication passage 1100 will not flow into the tunnel 300, thereby improving the convenience of the construction of the communication passage 1100.

[0078] As shown in Figure 4 , Figure 9 and Figure 10 S330, when the bending piece 900 is installed, the first counter-force device 500 and the negative ring pipe piece 610 between the first counter-force device 500 and the connecting pipe piece 800 are removed, and the second counter-force device 700 is arranged between the first inner side wall 310 and the connecting pipe piece 800. In this way, the width of the passage between the connecting pipe piece 800 and the first inner side wall 310 is increased, so that the operation space for discharging slag is increased, thereby improving the convenience of discharging slag in the communication passage 1100.

[0079] As shown in Figure 3 , Figure 9 and Figure 10As shown, specifically to the embodiment, S331, after the installation of the bending piece 900 is completed, the first counter-force device 500 and the negative ring segment 610 between the first counter-force device 500 and the connecting segment 800 are removed, and the second counter-force device 700 with the telescopic piece is correspondingly arranged between the first inner side wall 310 and the connecting segment 800. In this way, by removing the negative ring segment 610 in the tunnel 300, the operation space for discharging slag in the tunnel 300 is increased, so that the larger soil bucket is used to transport the slag, and the convenience and efficiency of discharging slag in the connecting passage 1100 are improved.

[0080] S332, the telescopic piece is driven to be elongated, so that the second counter-force device 700 is in abutting cooperation with the connecting segment 800. In this way, the telescopic piece can fill the gap between the second counter-force device 700 and the first inner side wall 310, so that the second counter-force device 700 can tightly abut against the connecting segment 800, and then the counter-force when the shield machine 100 advances can pass through the negative ring segment 610, the connecting segment 800, the second counter-force device 700 and be transmitted to the lining of the tunnel 300, so as to ensure that the shield machine 100 can stably and reliably advance.

[0081] It should be noted that the telescopic piece is provided as a jack, and the second counter-force device 700 includes a steel ring and at least four cross beams. One side of the steel ring is in abutting cooperation with the connecting segment 800, one end of each cross beam is spaced apart from the other side of the steel ring, and the other end of each cross beam is provided with a jack for abutting cooperation with the first inner side wall 310. In this way, the reliability and stability of the shield machine 100 advancing are improved.

[0082] As shown in Figure 7 and Figure 9 , S340, the corresponding connections between the two ends of the bending piece 900 and the connecting segment 800 and the sleeve 400 are all released. In this way, it is ensured that the bending piece 900 and the second counter-force device 700 do not interfere with each other. In addition, the bending piece 900, the sleeve 400 and the connecting segment 800 can be repeatedly used, thereby reducing the cost of advancing the connecting passage 1100.

[0083] As shown in Figure 4 , Figure 9 and Figure 10 , S400, the shield machine 100 starts advancing again, and the positive ring segment 620 is correspondingly assembled, and the slag generated by the shield machine 100 is discharged from the channel between the first inner side wall 310 and the negative ring segment 610 correspondingly arranged at the free end 410 of the sleeve 400. In this way, the operation space for discharging slag in the tunnel 300 is increased, and the convenience of discharging slag in the connecting tunnel 1100 is improved.

[0084] As shown in Figure 4 , Figure 9 and Figure 10As shown in S410, the belt conveyor 1200 is arranged at the bottom of the channel between the first inner side wall 310 and the negative segment 610 corresponding to the free end 410 of the sleeve 400. In this way, the muck is transported by the belt conveyor 1200, so that the labor intensity of the artificial is reduced during the muck discharge, and the efficiency of the muck discharge in the connecting channel 110 is improved.

[0085] It should be noted that one end of the belt conveyor 1200 is mounted on the bottom of the trolley 200, and the other end of the belt conveyor 1200 is arranged corresponding to the transport vehicle. In this way, the muck can be directly poured onto the belt conveyor 1200 on the trolley 200, so as to be conveyed to the transport vehicle.

[0086] As shown in Figure 4 , Figure 9 and Figure 10 , S420, the shield machine 100 starts tunneling again and assembles the positive segment 620 correspondingly, and the muck generated by the shield machine 100 is discharged from the channel between the first inner side wall 310 and the negative segment 610 corresponding to the free end 410 of the sleeve 400 to the belt conveyor 1200, so that the muck is transported to the transport vehicle by the belt conveyor 1200. In this way, most of the muck in the connecting channel 1100 can be transported to the transport vehicle by the belt conveyor 1200, reducing the labor intensity of the artificial and improving the efficiency of the muck discharge in the connecting channel 1100.

[0087] As shown in Figure 3 , in this embodiment, S421, the shield machine 100 starts tunneling again and assembles the positive segment 620 correspondingly, and the muck generated by the shield machine 100 is discharged to the side-discharging trolley 1300. In this way, the muck in the shield machine 100 can be directly distributed to the side-discharging trolley 1300, and the side-discharging trolley 1300 can accommodate a large amount of muck, so that the amount and efficiency of the muck discharge of the side-discharging trolley 1300 are increased, and the efficiency of the muck discharge in the connecting channel 1100 is improved.

[0088] S422, the side-discharging trolley 1300 can transport the muck to the channel between the first inner side wall 310 and the negative segment 610 corresponding to the free end 410 of the sleeve 400, and pour the muck onto the belt conveyor 1200, so that the muck is transported to the transport vehicle by the belt conveyor 1200. In this way, the side-discharging trolley 1300 can move back and forth between the belt conveyor 1200 and the shield machine 100, so that the side-discharging trolley 1300 can transport the muck discharged by the shield machine 100 to the belt conveyor 1200, further reducing the labor intensity of the artificial and improving the efficiency of the muck discharge in the connecting channel 1100.

[0089] It should be noted that the positive annular segment 620 can also be moved from the passage between the first inner side wall 310 and the connecting segment 800 to the side-dumping trolley 1300, and then transported to the corresponding position of the shield tunneling machine 100 by the side-dumping trolley 1300. In this way, the convenience of transporting the positive annular segment 620 is improved.

[0090] Compared with the conventional tapping method of the communication passage, the tapping method of the communication passage 1100 in the application has at least the following advantages: (1) When the shield tunneling machine 100 excavates to the outside of the tunnel 300, by removing the first counterforce device 500, and the negative annular segment 610 between the first counterforce device 500 and the negative annular segment 610 corresponding to the free end 410 of the sleeve 400, and reinstalling the second counterforce device 700, the space for tapping in the tunnel 300 is increased, and the convenience of tapping in the communication passage 1100 is improved. (2) The operation space for tapping in the tunnel 300 is increased, a larger capacity soil bucket can be used, the amount of tapping of the soil bucket at a time is increased, and the construction efficiency of the communication passage 1100 is improved.

[0091] In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. The term "and / or" used in the application includes any and all combinations of one or more related listed items.

[0092] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0093] In the present application, unless specifically defined otherwise, the terms "mounting", "connected", "connecting", "fixed", "fixing", and the like are to be construed in a broad sense, for example, they can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection via an intermediate medium; can be internal connection of two elements, or interaction between two elements, unless specifically defined otherwise. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0094] In the present application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0095] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used herein are for illustrative purposes only and are not intended to be limiting.

[0096] It should also be understood that when interpreting the connection relationship or position relationship of an element, although not explicitly described, the connection relationship and position relationship are interpreted to include an error range, which should be within an acceptable deviation range of a specific value determined by those skilled in the art. For example, "about", "approximately" or "substantially" can mean within one or more standard deviations, without limitation.

[0097] The technical features of the above embodiments can be combined in any way, and for the sake of brevity, not all possible combinations of the technical features in the above embodiments are described, but as long as the combination of the technical features does not exist Contradiction, it should be considered as the scope of the present application.

[0098] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be noted that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A method of tapping slag from a runner, characterized in that The application relates to a shield tunneling machine and a tunneling method thereof. The shield tunneling machine moves to a construction position in the tunnel through a trolley, the trolley is in abutment with the inner wall of the tunnel, the free end of a sleeve is in sealing abutment with the outer wall of the shield tunneling machine, the fixed end of the sleeve is fixedly connected with and in sealing abutment with the corresponding position of the inner wall of the tunnel, and the two sides of the first counterforce device are correspondingly connected with the shield tail of the shield tunneling machine and the first inner side wall of the tunnel; The shield tunneling machine starts tunneling, and starts assembling a negative ring segment from the side of the first counterforce device close to the shield tunneling machine, and the tailings generated by the shield tunneling machine are discharged from the channel between the negative ring segment and the first inner side wall; When the shield tunneling machine tunnels to the outside of the tunnel, the shield tunneling machine stops tunneling, fixes the negative ring segment arranged corresponding to the free end of the sleeve, removes the first counterforce device and the negative ring segment between the first counterforce device and the negative ring segment arranged corresponding to the free end of the sleeve, and correspondingly arranges a second counterforce device between the first inner side wall and the negative ring segment arranged corresponding to the free end of the sleeve; The shield tunneling machine starts tunneling again and correspondingly assembles a positive ring segment, and the tailings generated by the shield tunneling machine are discharged from the channel between the first inner side wall and the negative ring segment arranged corresponding to the free end of the sleeve.

2. The run-off method of the communication passage according to claim 1, characterized in that, After the step of the shield tunneling machine starting tunneling and starting assembling a negative ring segment from the side of the first counterforce device close to the shield tunneling machine, and the tailings generated by the shield tunneling machine being discharged from the channel between the negative ring segment and the first inner side wall, the method further comprises the following steps: When the shield tunneling machine needs to splice the negative ring segment arranged corresponding to the free end of the sleeve, a connecting segment is transported to the shield tunneling machine so that the connecting segment is arranged corresponding to the free end of the sleeve, and when the connecting segment is spliced, a positive ring segment is transported to the shield tunneling machine so that the shield tunneling machine can start splicing the positive ring segment along the connecting segment.

3. The run-off method of the communication passage according to claim 2, characterized in that, In the step of transporting a connecting segment to the shield tunneling machine so that the connecting segment is arranged corresponding to the free end of the sleeve when the shield tunneling machine needs to splice the negative ring segment arranged corresponding to the free end of the sleeve, the connecting segment is arranged corresponding to the free end of the sleeve. In the step of transporting a connecting segment to the shield tunneling machine so that the connecting segment is arranged corresponding to the free end of the sleeve when the shield tunneling machine needs to splice the negative ring segment arranged corresponding to the free end of the sleeve, the connecting segment is arranged corresponding to the free end of the sleeve.

4. The run-off method of the communication passage according to claim 3, characterized in that, In the step of transporting a connecting segment to the shield tunneling machine so that the connecting segment is arranged corresponding to the free end of the sleeve when the shield tunneling machine needs to splice the negative ring segment arranged corresponding to the free end of the sleeve, the connecting segment is arranged corresponding to the free end of the sleeve. When the shield machine excavates to the outside of the tunnel, the shield machine stops excavation, and two ends of the bending piece are connected with the connecting segment and the sleeve respectively, so that the bending piece can limit the connecting segment from moving relative to the sleeve in a direction close to the first inner side wall; When the bending piece is installed, the first counterforce device and the negative ring segment between the first counterforce device and the connecting segment are removed, and a second counterforce device is arranged between the first inner side wall and the connecting segment.

5. The run-off method of the communication passage according to claim 4, characterized in that, In the step of when the shield machine excavates to the outside of the tunnel, the shield machine stops excavation, and two ends of the bending piece are connected with the connecting segment and the sleeve respectively, so that the bending piece can limit the connecting segment from moving relative to the sleeve in a direction close to the first inner side wall, comprising: When the shield machine excavates to the outside of the tunnel, the shield machine stops excavation, and one end of the bending piece is connected with a sliding groove arranged on the connecting segment in the axial direction of the sleeve; The bending piece is driven to slide relative to the sliding groove, so that one end of the bending piece abuts against the inner wall of one end of the sliding groove, and the other end of the bending piece is inserted into the socket on the sleeve, and then the bending piece is locked with the socket through a locking piece, so as to limit the connecting segment from moving relative to the sleeve in a direction close to the first inner side wall.

6. The run-off method of the communication passage according to claim 4, wherein After the step of when the shield machine excavates to the outside of the tunnel, the shield machine stops excavation, and two ends of the bending piece are connected with the connecting segment and the sleeve respectively, so that the bending piece can limit the connecting segment from moving relative to the sleeve in a direction close to the first inner side wall, further comprising: When the shield machine excavates to the outside of the tunnel, grouting is performed to the gap between the shield tail of the shield machine and the inner wall of the connecting passage, so as to seal and connect the shield machine and the inner wall of the connecting passage.

7. The run-off method of the communication passage according to claim 4, wherein In the step of when the bending piece is installed, the first counterforce device and the negative ring segment between the first counterforce device and the connecting segment are removed, and a second counterforce device is arranged between the first inner side wall and the connecting segment, comprising: In the step of when the bending piece is installed, the first counterforce device and the negative ring segment between the first counterforce device and the connecting segment are removed, and a second counterforce device is arranged between the first inner side wall and the connecting segment, comprising: The second counterforce device is driven to abut against the connecting segment.

8. The run-off method of a connecting channel according to claim 7, characterized in that, After the step of driving the second counterforce device to abut against the connecting segment, further comprising: The connection of the two ends of the bending piece with the connecting segment and the sleeve is released respectively.

9. The run-off method of a communication channel according to any one of claims 1 to 8, characterized in that, In the step of when the shield machine starts excavation again and the positive ring segment is assembled correspondingly, and the discharged residue of the shield machine is discharged from the channel between the first inner side wall and the negative ring segment arranged at the free end of the sleeve, comprising: A belt conveyor is arranged at the bottom of the channel between the first inner side wall and the negative segment corresponding to the free end of the sleeve; The shield machine starts to excavate again and assembles the positive segment, and the discharge from the shield machine is discharged from the channel between the first inner side wall and the negative segment corresponding to the free end of the sleeve to the belt conveyor, so that the discharge is transported to the transport vehicle through the belt conveyor.

10. The run-off method of a communication channel according to claim 9, characterized in that, In the step of the shield machine starting to excavate again and assembling the positive segment, and the discharge from the shield machine being discharged from the channel between the first inner side wall and the negative segment corresponding to the free end of the sleeve to the belt conveyor, so that the discharge is transported to the transport vehicle through the belt conveyor, comprising: The shield machine starts to excavate again and assembles the positive segment, and the discharge from the shield machine is discharged to the side-discharging trolley; The side-discharging trolley can transport the discharge to the channel between the first inner side wall and the negative segment corresponding to the free end of the sleeve, and dump the discharge to the belt conveyor, so that the discharge is transported to the transport vehicle through the belt conveyor.

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