Communication channel excavation equipment and construction method thereof

Abstract

The present invention relates to a communication channel excavation equipment and a construction method thereof. The communication channel excavation equipment is used to excavate a communication channel (30) between a starting side main tunnel (10) and a receiving side main tunnel (20), and comprises: an excavation main machine (40), comprising a shield (41), a cutterhead (42) arranged at the front end of the shield (41), and a cutterhead driving element (43) arranged in the shield (41) for driving the cutterhead (42); and a driving mechanism (50), which is configured to be connected to a tunnel wall of the starting side main tunnel (10) adjacent to the communication channel (30) and to apply a driving force to make the excavation main machine (40) excavate toward the receiving side main tunnel (20).

Description

Technical Field

[0001] The present disclosure relates to the field of tunnel construction, and in particular to a communication channel excavation device and a construction method thereof. Background Art

[0002] With the continuous development of society, urban ground space resources are becoming increasingly scarce, the intensity of underground space development is constantly increasing, and the demand for various communication channels has increased dramatically. According to the provisions of GB 50157-2003 "Metro Design Code", "between two single-line section tunnels, when the tunnel connection length is greater than 600m, a communication channel should be set up."

[0003] The communication channel is mainly used for fire rescue, fire evacuation and drainage. When there is a problem with the tunnel, personnel can be transferred through the communication channel, which also facilitates rescue personnel to carry out rescue. Therefore, it is called the "escape channel", so the construction of the communication channel is particularly important.

[0004] In some related technologies for excavating the communication channel, the mining method is generally used for excavation, and the excavation range is reinforced by freezing method, ground reinforcement, etc. In other related technologies, the communication channel is excavated by shield or jacking construction method. Summary of the invention

[0005] The inventor has found through research that the mining method in the related art has the disadvantages of long freezing period, poor stability, high construction risk and high engineering cost when excavating the communication channel. When the shield or jacking construction method is used to excavate the communication channel, it is only suitable for the excavation of a single hole diameter, and the excavation mode that uses the back reaction force of the main tunnel to drive the excavation equipment forward requires the main tunnel to provide a certain support reaction force. In order to meet the requirements of stable advancement of the main tunnel and the excavation equipment, it is necessary to set up support mechanisms on both the starting side and the receiving side to support the multi-directional tunnel walls of the main tunnel, resulting in relatively high equipment costs, and occupying the main tunnel space, affecting the operation of other equipment or vehicles in the main tunnel. In addition, the support reaction force makes the stress distribution on the main tunnel not very uniform. When the support equipment fails, it is easy to cause uneven stress in all directions of the main tunnel, resulting in instability of the tunnel side segments, thereby affecting construction safety.

[0006] In view of this, the embodiments of the present disclosure provide a connecting channel excavation equipment and a construction method thereof, which can improve the stress condition of the main tunnel structure during the construction process and reduce construction risks.

[0007] In one aspect of the present disclosure, a communication channel excavation device is provided, which is used to excavate a communication channel between a main tunnel on an originating side and a main tunnel on a receiving side, wherein the communication channel excavation device comprises:

[0008] A tunneling main machine, comprising a shield body, a cutter head disposed at a front end of the shield body, and a cutter head driving element disposed in the shield body for driving the cutter head; and

[0009] The driving mechanism is configured to be connected to the tunnel wall of the originating main tunnel adjacent to the communication channel, and to apply a driving force to cause the excavation main machine to excavate toward the receiving main tunnel.

[0010] In some embodiments, the driving mechanism comprises:

[0011] A fixing member is configured to be fixedly connected to a tunnel wall of the originating main tunnel adjacent to the communication channel at a position located at the periphery of the originating side opening of the communication channel;

[0012] A push piece having a supporting portion for supporting the tail of the main boring machine or a pipe segment for lining the inner wall of the communication channel; and

[0013] A driving element, one end of which is connected to the jacking member and the other end of which is connected to the fixing member, is configured to pull the jacking member toward the fixing member so as to push the boring machine and the pipe segment toward the receiving side main tunnel through the supporting portion.

[0014] In some embodiments, the driving element comprises:

[0015] A plurality of hydraulic cylinders are arranged at intervals along the circumference of the boring machine.

[0016] In some embodiments, the extension and retraction directions of the piston rods of the multiple hydraulic cylinders are parallel to the movement direction of the pushing member.

[0017] In some embodiments, the fixing member comprises:

[0018] The four connecting ear plates are located in the same plane as the connection points of the driving element and are respectively located at the four corner points of a rectangle on the plane. The cutter head axis of the tunneling main machine located in the communication channel passes through the intersection of the two diagonals of the rectangle.

[0019] In some embodiments, the communication channel excavation equipment further includes:

[0020] A first supporting trolley is configured to run in the origin-side main tunnel; and

[0021] The guide mechanism is disposed between the first supporting trolley and the pushing member, and is configured to guide the movement of the pushing member.

[0022] In some embodiments, the guiding mechanism comprises:

[0023] a support and guide structure, disposed on the lower side or bottom of the push member, configured to support and guide the movement of the push member; and / or

[0024] The anti-tilt guide structure is arranged on both sides of the pushing member and is configured to maintain the angle of the pushing member relative to the first supporting trolley and guide the movement of the pushing member.

[0025] In some embodiments, the support guide structure comprises:

[0026] A first guide rail, disposed on an upper surface of the first supporting trolley;

[0027] At least one pair of legs, each pair of legs being respectively disposed on two side walls of the pushing member adjacent to the bottom of the pushing member; and

[0028] The roller is connected to the supporting leg and is rollably arranged on the first guide rail.

[0029] In some embodiments, the roller is a V-shaped track wheel, and the first guide rail is a triangular cross-section track that cooperates with the V-shaped track wheel.

[0030] In some embodiments, the first supporting trolley has a supporting column, and the anti-tilt guide structure includes:

[0031] At least one pair of sliding parts, each pair of sliding parts is respectively arranged on the side walls of both sides of the pushing member; and

[0032] At least one pair of second guide rails is fixedly connected to the supporting column, and each pair of second guide rails is slidably matched with the at least one pair of sliding parts.

[0033] In some embodiments, at least some of the plurality of hydraulic cylinders have one end hinged to the fixing member and can swing relative to the fixing member, and the other end is detachably connected to the pushing member.

[0034] In some embodiments, the driving element further comprises:

[0035] The pull rod is located on the upper side of the hydraulic cylinder, one end of which is connected to the fixing member and the other end of which is connected to the hydraulic cylinder, and is configured to support the hydraulic cylinder when the hydraulic cylinder swings relative to the fixing member.

[0036] In some embodiments, the communication channel excavation equipment further includes:

[0037] The first sealing sleeve is configured to be sealed and connected to a starting-side opening arranged on a tunnel wall of the starting-side main tunnel adjacent to the communication channel.

[0038] In some embodiments, the communication channel excavation equipment further includes:

[0039] A first supporting trolley is configured to run in the main tunnel at the originating side;

[0040] A first support, disposed on an upper surface of the first supporting trolley and configured to support the first sealing sleeve; and

[0041] The second support is arranged on the upper surface of the first supporting trolley and is located on the side of the first support away from the starting side opening, and is configured to support the excavation main machine.

[0042] In some embodiments, the communication channel excavation equipment further includes:

[0043] The anti-retraction mechanism is arranged on the first sealing sleeve and is configured to limit the retreat of the tunneling main machine and the pipe segment in the direction opposite to the tunneling direction of the tunneling main machine.

[0044] In some embodiments, the backstop mechanism comprises:

[0045] a connecting plate fixedly connected to the outer wall of the first sealing sleeve and having a protruding portion protruding relative to the wall edge of the first sealing sleeve in the opposite direction of the excavation direction of the excavation main machine, wherein the protruding portion has a pin hole; and

[0046] The pin is configured to pass through the pin hole and be inserted into the blind hole on the previous section of the pipe segment when assembling the pipe segments.

[0047] In some embodiments, the pin is connected to the connecting plate or the outer wall of the first sealing sleeve through a flexible connector.

[0048] In some embodiments, the first sealing sleeve has a grease injection hole for injecting sealing grease, and the communication channel excavation equipment further includes:

[0049] The sealing brush is arranged on the inner wall of the first sealing sleeve and is configured to be immersed in the sealing grease to achieve a sealing effect.

[0050] In some embodiments, the sealing brush includes at least two annular brushes, and the at least two annular brushes are arranged at intervals along the axial direction of the first sealing sleeve.

[0051] In some embodiments, a lower portion of the inner wall of the first sealing sleeve is provided with an arc-shaped support member, which extends circumferentially along the inner wall of the first sealing sleeve and protrudes relative to the inner wall of the first sealing sleeve.

[0052] In some embodiments, the first sealing sleeve comprises:

[0053] A first sleeve section having an arcuate edge welded to the originating side opening at one end and a first flange at the other end; and

[0054] The second sleeve section has a second flange at one end which can be connected to the first flange via a connecting piece.

[0055] In some embodiments, the communication channel excavation equipment further includes:

[0056] A first supporting trolley connected to the driving mechanism and configured to run in the starting main tunnel and support the main boring machine; and

[0057] The second support trolley is arranged on at least one side of the first support trolley along the extension direction of the main tunnel on the starting side, and is configured to set at least one of a segment crane, a starting side fluid system, a starting side hydraulic system and a starting side electrical system.

[0058] In some embodiments, the communication channel excavation equipment further includes:

[0059] a third supporting trolley configured to run in the receiving-side main tunnel;

[0060] A second sealing sleeve is configured to be sealed and connected to a receiving-side opening provided on a tunnel wall of the receiving-side main tunnel adjacent to the communication channel; and

[0061] The third support is disposed on the upper surface of the third supporting trolley and is configured to support the second sealing sleeve.

[0062] In some embodiments, the second sealing sleeve comprises:

[0063] A third sleeve section having an arcuate edge welded to the receiving side opening at one end and a third flange at the other end; and

[0064] The fourth sleeve section has a fourth flange at one end which can be connected to the third flange via a connecting piece.

[0065] In some embodiments, the third support is movably disposed on the upper surface of the third support trolley, and an exit-hole drive unit is provided between the third support and the third support trolley, and the exit-hole drive unit is configured to drive the fourth sleeve segment and the internal excavation main machine to leave the third sleeve segment.

[0066] In some embodiments, the communication channel excavation equipment further includes:

[0067] The third supporting trolley has a receiving side supporting mechanism, and the receiving side supporting mechanism is configured to support the tunnel wall of the tunnel section of the receiving side main tunnel corresponding to the receiving side opening of the connecting channel.

[0068] In one aspect of the present disclosure, a construction method based on the aforementioned communication channel excavation equipment is provided, comprising:

[0069] Transport the main boring machine to the position of the starting side opening corresponding to the connecting passage in the starting side main tunnel;

[0070] Connecting the driving mechanism to the tunnel wall of the main tunnel on the originating side adjacent to the communication channel;

[0071] Excavating the soil of the communication channel by using the excavation host;

[0072] During the excavation process of the excavation main machine, segments are assembled at the rear side of the excavation main machine to support the soil, and a driving force is applied to the excavation main machine and the segments through the driving mechanism to cause the excavation main machine to excavate toward the receiving side main tunnel;

[0073] After the main boring machine is drilled out of the receiving side opening of the communication channel, the pipe segments in the communication channel are subjected to back-wall grouting until the back-wall grout solidifies.

[0074] In some embodiments, the step of transporting the main boring machine to a position in the originating main tunnel corresponding to the originating opening of the communication channel comprises:

[0075] Installing the excavation main machine into a first sealing sleeve;

[0076] The excavation main machine and the first sealing sleeve are transported to a position corresponding to the starting side opening of the communication channel in the starting side main tunnel by a first supporting trolley;

[0077] The first sealing sleeve is sealingly connected to the starting side hole.

[0078] In some embodiments, the construction method further comprises:

[0079] After the first sealing sleeve is sealed and connected to the starting side opening and before the soil of the communication channel is excavated by the main boring machine, sealing grease is injected into the first sealing sleeve, mud is injected into the formed soil bin, and a pressure test is performed.

[0080] In some embodiments, the step of connecting the driving mechanism to the tunnel wall of the originating main tunnel adjacent to the communication channel comprises:

[0081] A connecting fixture is fixedly connected to a tunnel wall of the originating main tunnel adjacent to the communication channel at a position located on the periphery of the originating opening of the communication channel;

[0082] One end of the driving element is connected to the pushing member on the first supporting trolley, and the other end is connected to the fixing member, so that the pushing member can be driven by the driving element to move away from or close to the starting side hole.

[0083] In some embodiments, the construction method further comprises:

[0084] The second sealing sleeve is transported to a position of a receiving side opening corresponding to the communication channel in the receiving side main tunnel by a third supporting trolley;

[0085] The second sealing sleeve is sealingly connected to the receiving side hole.

[0086] In some embodiments, the construction method further comprises:

[0087] After the second sealing sleeve is sealed and connected to the receiving side opening and before the soil of the communication channel is excavated by the main boring machine, slurry is injected into the second sealing sleeve and a pressure test is performed.

[0088] Therefore, according to the embodiment of the present disclosure, the driving mechanism is connected to the tunnel wall of the main tunnel on the originating side adjacent to the connecting channel, and the driving mechanism applies a driving force to make the excavation main machine excavate toward the main tunnel on the receiving side, so as to use the excavation main machine to excavate the connecting channel. This driving method can improve the uneven force in all directions of the main tunnel on the originating side during the construction process, reduce the disturbance to the main tunnel on the originating side, and reduce the possibility of instability of the pipe segment on the side of the main tunnel on the originating side due to excessive force. In addition, this driving method can reduce the requirements for the support of the main tunnel on the originating side, save the cost of the support mechanism, and reduce the occupation of the main tunnel space. BRIEF DESCRIPTION OF THE DRAWINGS

[0089] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0090] The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0091] Figure 1 It is a schematic diagram of the structure of some embodiments of the communication channel excavation equipment disclosed in the present invention;

[0092] Figure 2 It is a schematic diagram of the structure of some embodiments of the communication channel excavation equipment disclosed in the present invention in the main tunnel on the originating side;

[0093] Figure 3 It is a structural schematic diagram of a tunneling main machine in some embodiments of the communication channel tunneling equipment disclosed in the present invention;

[0094] Figure 4is a structural schematic diagram of a tunneling main machine, a driving mechanism and a first supporting trolley according to some embodiments of the communication channel tunneling equipment disclosed in the present invention;

[0095] Figure 5 yes Figure 4 A schematic diagram of the structure from the reverse perspective;

[0096] Figure 6 is a schematic diagram of the structure of the driving mechanism in some embodiments of the communication channel excavation equipment disclosed in the present invention;

[0097] Figure 7 is a schematic structural diagram of a first sealing sleeve in some embodiments of the communication channel excavation equipment disclosed in the present invention;

[0098] Figure 8 and Fig. 9 They are respectively the stress distribution diagrams of the main tunnel on the originating side when the back-push method and the reverse-pull method are used for simulation;

[0099] Fig.10 is a schematic structural diagram of a stop-retraction mechanism in some embodiments of the communication channel excavation equipment disclosed in the present invention;

[0100] Fig.11 yes Fig.10 Schematic diagram of the structure from another perspective;

[0101] Fig.12 is a schematic diagram of the structure of the first support and the second support in some embodiments of the communication channel excavation equipment disclosed in the present invention;

[0102] Fig.13 yes Fig.12 Schematic diagram of the structure from another perspective;

[0103] Fig.14 It is a schematic diagram of the structure of some embodiments of the communication channel excavation equipment disclosed in the present invention in the main tunnel on the receiving side;

[0104] Fig.15 is a schematic structural diagram of a third support on a third supporting trolley in some embodiments of the communication channel excavation equipment disclosed in the present invention;

[0105] Fig.16 yes Fig.15 Schematic diagram of the structure from another perspective;

[0106] Fig.17 It is a flow chart of some embodiments of the communication channel construction method disclosed in the present invention.

[0107] It should be understood that the size of each part shown in the accompanying drawings is not drawn according to the actual proportional relationship. In addition, the same or similar reference numerals represent the same or similar components. DETAILED DESCRIPTION

[0108] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0109] The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0110] In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other device without an intermediate device, or may not be directly connected to the other device but have an intermediate device.

[0111] All terms (including technical terms or scientific terms) used in the present disclosure have the same meanings as those understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0112] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0113] Figure 1 It is a schematic diagram of the structure of some embodiments of the connecting channel excavation equipment disclosed in the present invention. Figure 2 It is a schematic diagram of the structure of some embodiments of the connecting channel excavation equipment disclosed in the present invention in the main tunnel on the starting side. Figure 3 It is a schematic diagram of the structure of the excavation host in some embodiments of the communication channel excavation equipment disclosed in the present invention.

[0114] refer to Figures 1 to 3 The embodiment of the present disclosure provides a communication channel excavation equipment for excavating a communication channel 30 between a main tunnel 10 on the originating side and a main tunnel 20 on the receiving side. Figure 1 In the figure, the left side is the receiving side main tunnel 20, the right side is the originating side main tunnel 10, and at least one communication channel 30 is provided between the originating side main tunnel 10 and the receiving side main tunnel 20. The two ends of the communication channel 30 are respectively provided with an originating side opening 31 connected to the originating side main tunnel 10 and a receiving side opening 32 connected to the receiving side main tunnel 20. Figure 1 Arrow T shows the direction of the communication channel 30 from the originating side opening 31 to the receiving side opening 32. The communication channel 30 can be used for fire rescue, fire evacuation and drainage. When a problem occurs in the tunnel, personnel can be transferred through the communication channel, which also facilitates rescue personnel to carry out rescue.

[0115] The communication channel excavation equipment includes: an excavation host 40 and a driving mechanism 50. Figure 3 The main excavation machine 40 includes a shield body 41, a cutter head 42 disposed at the front end of the shield body 41, and a cutter head driving element 43 disposed in the shield body 41 for driving the cutter head 42. Compared with the excavation mechanism of the steel casing with a cutting knife used for excavating the communication channel, the main excavation machine 40 in this embodiment can realize the one-time forming of the communication channel 30, unlike the steel casing, which needs to cut the soil layer first to achieve support and then remove the soil in the middle. Therefore, this embodiment is more efficient in excavating the communication channel 30. In addition, compared with the partial section excavation machine used for excavating the communication channel, this embodiment can achieve soil pressure maintenance when cutting the soil layer, improve construction safety, unlike the partial section excavation machine, which is easy to cause collapse and water seepage due to the unstable stratum between the two main tunnels during excavation, thereby causing adverse effects on the main tunnel and affecting construction safety.

[0116] refer to Figure 2 , the driving mechanism 50 is configured to be connected to the tunnel wall of the originating main tunnel 10 adjacent to the communication channel 30, and to apply a driving force to make the excavation main machine 40 excavate toward the receiving main tunnel 20. Compared with the excavation mode in the related art that uses the back reaction force of the main tunnel to drive the excavation equipment forward, the driving mechanism 50 drives the excavation main machine 40 by pulling back from the side adjacent to the originating side opening 31, which can improve the force uniformity of the originating main tunnel 10 in all directions during the construction process, reduce the disturbance to the originating main tunnel 10, and reduce the possibility of instability of the opening side pipe segment of the originating main tunnel 10 due to excessive force. In addition, this driving method can reduce the requirements for the support of the originating main tunnel 10, save the cost of the support mechanism, and reduce the occupation of the main tunnel space.

[0117] In this embodiment, the driving mechanism 50 is connected to the tunnel wall of the originating main tunnel 10 adjacent to the communication channel 30 when applying the driving force to make the tunneling main machine 40 advance toward the receiving side main tunnel 20, so that the force of pulling back the tunneling main machine 40 can be directly borne by the tunnel wall on this side. Compared with the method of setting a support mechanism in the originating main tunnel 10, connecting the driving mechanism 50 to the support mechanism, and letting the support mechanism bear the force of pulling back the tunneling main machine 40, this embodiment can ensure the stability and reliability of the driving mechanism 50 when driving, and can save the setting of the support mechanism that provides the reverse pulling force, thereby saving costs.

[0118] In order to improve the excavation performance of the main excavation machine 40, the cutter head 42 can adopt a double-conical stepped cutting profile cutter head. The center of the cutter head protrudes in the axial direction away from the shield body 41, and the edge part is located further back than the center part in the axial direction away from the shield body 41, thereby forming a cutter head structure with a taper, so as to cut the main tunnel segment more smoothly.

[0119] exist Figure 3 In the embodiment, the shield body 41 may include a front shield and a rear shield, and the excavation main machine 40 may include a correction system 45 connecting the front shield and the rear shield, and the correction system 45 may be used to adjust the posture and excavation path of the excavation main machine 40 during excavation. The excavation main machine 40 may also include a screw conveying system 44, which is located in the shield body 41 and can transfer the sand and gravel excavated by the cutter head 42 backward, thereby realizing the transportation of the slag. During the excavation process, the excavation main machine 40 may assemble the pipe segment 33 on the rear side of the rear shield of the excavation main machine 40, and drive the excavation main machine 40 to continue excavating by pushing the pipe segment 33 through the driving mechanism 50.

[0120] refer to Figure 1 In some embodiments, the communication channel excavation equipment further includes: a first support trolley 60 and a second support trolley 70. The first support trolley 60 is connected to the driving mechanism 50 and is configured to run in the starting side main tunnel 10 and support the excavation main machine 40. The first support trolley 60 may have wheels so as to run on a track laid in the starting side main tunnel 10.

[0121] The second support trolley 70 is arranged on at least one side of the first support trolley 60 along the extension direction of the originating main tunnel 10, and is configured to be provided with at least one of a segment crane 74, an operating system 71, an originating hydraulic system 72, and an originating electrical system 73. The second support trolley 70 may be provided in plurality, and the segment crane 74, the originating fluid system 71, the originating hydraulic system 72, and the originating electrical system 73 may be centrally arranged on one second support trolley 70, or may be separately arranged on a plurality of second support trolleys 70. The second support trolley 70 may have wheels so as to run on a track laid in the originating main tunnel 10.

[0122] The segment crane 74 can be used to lift the segment 33 used for lining the communication channel. The starting side fluid system 71, the starting side hydraulic system 72 and the starting side electrical system 73 are respectively used for the operation, hydraulic control and electrical control of the communication channel excavation equipment in the starting side main tunnel. In addition, the second support trolley 70 can also be provided with a fluid system for injecting mud or sealing grease.

[0123] exist Figure 1 In the embodiment, the communication channel excavation equipment may further include: a third support trolley 80. The third support trolley 80 is configured to run in the receiving-side main tunnel 20, and can be used to receive the excavation host 40 after excavating through the receiving-side opening 32 of the communication channel 30. The third support trolley 80 may have wheels so as to run on a track laid in the receiving-side main tunnel 20.

[0124] The third support trolley 80 may have a receiving side support mechanism 84. The receiving side support mechanism 84 is configured to support the tunnel wall of the tunnel section of the receiving side main tunnel 20 corresponding to the receiving side opening 32 of the communication channel 30, so as to reduce the risk of collapse of the receiving side main tunnel when the excavation main machine 40 digs through the receiving side opening 32.

[0125] refer to Figure 1 In some embodiments, the driving mechanism 50 includes: a fixing member 51, a pushing member 52 and a driving element 53. The fixing member 51 is configured to be fixedly connected to the tunnel wall of the starting side main tunnel 10 adjacent to the communication channel 30 at a position located at the periphery of the starting side opening 31 of the communication channel 30. The fixing member 51 is arranged at the periphery of the starting side opening 31 to avoid the fixing member 51 from interfering with the operation of the excavation main machine 40. The fixing member 51 can be welded to the tunnel wall or fixed by other connection methods.

[0126] The thrust member 52 has a supporting portion for supporting the tail of the tunneling main machine 40 or the pipe segment 33 used for lining the inner wall of the communication channel 30. One end of the driving element 53 is connected to the thrust member 52, and the other end is connected to the fixing member 51. The driving element 53 is configured to push the tunneling main machine 40 and the pipe segment 33 toward the receiving side main tunnel 20 through the supporting portion by pulling the thrust member 52 toward the fixing member 51. In this way, the driving effect of the tunneling main machine 40 and the pipe segment 33 moving toward the receiving side main tunnel 20 is achieved by pulling the thrust member 52 back.

[0127] In order to ensure that the push member 52 can smoothly and reliably push the excavation host 40 and the pipe segment 33 when being acted upon by the driving element 53, Figure 1 In some embodiments, the communication channel excavation equipment further includes: a first support trolley 60 and a guide mechanism 61. The first support trolley 60 is configured to run in the starting main tunnel 10. The guide mechanism 61 is disposed between the first support trolley 60 and the jacking member 52, and is configured to guide the movement of the jacking member 52.

[0128] According to specific needs, the guide mechanism 61 can be in various forms, such as Figure 1 The guide mechanism 61 may include: a support guide structure 611, which is disposed on the lower side or bottom of the push member 52 and is configured to support and guide the push member 52. In this way, the support and guidance of the push member 52 by the support guide structure 611 makes the push member 52 move more smoothly.

[0129] The guide mechanism 61 may also include: an anti-tilt guide structure 612, which is disposed on both sides of the push member 52 and is configured to maintain the angle of the push member 52 relative to the first support trolley 60 and guide the movement of the push member 52. In this way, the anti-tilt guide structure 612 guides the movement of the push member 52 and maintains the angle of the push member 52 relative to the first support trolley 60, so that the push member 52 moves more smoothly and stably, and avoids tipping during movement.

[0130] Figure 4 It is a structural schematic diagram of the excavation main machine, the driving mechanism and the first supporting trolley in some embodiments of the connecting channel excavation equipment disclosed in the present invention. Figure 5 yes Figure 4 Schematic diagram of the structure from the reverse perspective. Figure 6 It is a schematic diagram of the structure of the driving mechanism in some embodiments of the connecting channel excavation equipment disclosed in the present invention.

[0131] refer to Figures 4 to 6In some embodiments, the driving element 53 includes: a plurality of hydraulic cylinders 531 arranged at intervals along the circumference of the tunneling main machine 40. The number of the hydraulic cylinders 531 can be two, three, four or more. By retracting the plurality of hydraulic cylinders 531 synchronously, a reverse pulling action on the push member 52 is achieved, so that the push member 52 moves toward the starting side opening 31.

[0132] The hydraulic cylinder 531 can output a large force in a limited space, thereby reducing space occupation and achieving a large excavation output. In other embodiments, according to different excavation requirements, the drive mechanism 53 can also use other forms of drive elements 53, such as cylinders, electric push rods, etc.

[0133] In order to improve the hydraulic cylinder's pull-back effect on the push piece, refer to Figure 6 In some embodiments, the extension and retraction directions of the piston rods of the plurality of hydraulic cylinders 531 are parallel to the movement direction of the push member 52. One end of the hydraulic cylinder 531 may be fixedly connected or hinged to the fixed member 51, and when the hydraulic cylinder 531 extends or retracts the piston rod, the extension and retraction direction of the piston rod remains parallel to the movement direction of the push member 52 without changing, thereby achieving a greater counter-pull force. In other embodiments, the hydraulic cylinder 531 may be hinged to the fixed member 51, and when the hydraulic cylinder 531 extends or retracts the piston rod, the hydraulic cylinder 531 swings around the hinge axis, thereby changing the extension and retraction direction of the piston rod and the movement direction of the push member 52.

[0134] refer to Figure 6 In some embodiments, the fixing member 51 includes four connecting ear plates, and the connection points with the driving element 53 are located in the same plane. Figure 4 and Figure 5 The four connecting ear plates are respectively located at the four corner points of a rectangle on the same plane, and the axis of the cutterhead 42 of the tunneling main machine 40 located in the communication channel 30 passes through the intersection of the two diagonals of the rectangle. In this way, when the thrust member 52 acts on the tunneling main machine or the pipe segment 33, it is not easy to generate excess torque relative to the axis of the cutterhead 42, so that the tunneling process of the tunneling main machine 40 is smooth and a communication channel can be formed along a specified path.

[0135] refer to Figure 1 , Figure 4 and Figure 5 In some embodiments, the support guide structure 611 includes: a first guide rail 6111, at least one pair of legs 6112 and a roller 6113. The first guide rail 6111 is disposed on the upper surface of the first support trolley 60. The first guide rail 6111 may be parallel to the axis of the cutter head 42 or the shield body 41 of the excavation host 40.

[0136] There may be only one pair of legs 6112, or more than two pairs. Each pair of legs 6112 is respectively disposed on the side walls of the push member 52 adjacent to the bottom of the push member 52. The roller 6113 is connected to the legs 6112 and is rollably disposed on the first guide rail 6111. The roller 6113 rolls on the first guide rail 6111, so that the push member 52 can be translated more smoothly.

[0137] exist Figure 4 and Figure 5 In the embodiment, the roller 6113 is a V-shaped track wheel, and the first guide rail 6111 is a triangular cross-section track matched with the V-shaped track wheel. The V-shaped track wheel automatically aligns with the triangular cross-section track under the downward pressure of the push member and the legs, and is not easy to separate from the guide rail during operation, thereby improving the stability of the push member movement.

[0138] exist Figure 4 and Figure 5 In the embodiment, the first support trolley 60 has a support column 62, and the anti-tilt guide structure 612 may include: at least one pair of sliding parts 6121 and at least one pair of second guide rails 6122. Each pair of sliding parts 6121 is respectively arranged on the side walls of the push member 52. At least one pair of second guide rails 6122 is fixedly connected to the support column 62, and each pair of second guide rails 6122 is respectively slidably matched with the at least one pair of sliding parts 6121. The sliding part 6121 can form a relatively slidable clamping or embedding matching structure with the second guide rail 6122.

[0139] refer to Figure 6 In some embodiments, at least some of the multiple hydraulic cylinders 531 have one end hinged to the fixing member 51 and swingable relative to the fixing member 51, and the other end is detachably connected to the push member 52. When the multiple hydraulic cylinders 531 are all connected to the push member 52, the multiple hydraulic cylinders 531 can enclose a space for accommodating the tunneling mainframe and the pipe segments 33. When the pipe segments 33 need to be supplemented, the connection between the hydraulic cylinders 531 and the push member 52 can be disconnected, and the hydraulic cylinders 531 can be swung to facilitate the outer pipe segments 33 to enter the space, and then the hydraulic cylinders 531 can be swung back and connected to the push member 52.

[0140] In some embodiments, some of the hydraulic cylinders 531 can be set to a swingable structure according to the entry direction of the pipe segment 33, and their hinge axes can be parallel to the vertical direction. In other embodiments, all hydraulic cylinders 531 can also be set to a swingable structure. In addition, the hydraulic cylinder 531 can be connected to the push member 52 through a pin 54, and the pin 52 can be removed by a tool.

[0141] exist Figure 6In the embodiment, the driving element 53 further includes a pull rod 532. The pull rod 532 is located on the upper side of the hydraulic cylinder 531. One end of the pull rod 532 is connected to the fixing member 51, and the other end is connected to the hydraulic cylinder 531. The pull rod 532 is configured to support the hydraulic cylinder 531 when the hydraulic cylinder 531 swings relative to the fixing member 51, so that it is convenient for operators to connect or disconnect the connection structure of the hydraulic cylinder 531 and the push member 52 without having to support the hydraulic cylinder 531 manually or by tools.

[0142] Figure 7 Schematic diagram of the structure of the first sealing sleeve in some embodiments of the connecting channel excavation equipment disclosed in the present invention. Figure 1 and Figure 7 In some embodiments, the communication channel excavation equipment further includes: a first sealing sleeve 63. The first sealing sleeve 63 can be sealed and connected to the starting side opening 31, for example, by welding the first sealing sleeve 63 of metal material to be continuously and fixedly connected to the starting side opening to achieve a sealing effect.

[0143] exist Figure 7 In the embodiment, the first sealing sleeve 63 has a grease injection hole 631 for injecting sealing grease. The communication channel excavation equipment also includes a sealing brush 632. The sealing brush 632 is arranged on the inner wall of the first sealing sleeve 63 and is configured to be immersed in the sealing grease to achieve a sealing effect. After the sealing grease is injected into the first sealing sleeve 63 into which the excavation host 40 has been placed, the sealing grease will fill the space between the shield body 41 of the excavation host 40 and the inner wall of the first sealing sleeve 63 along the circumference of the first sealing sleeve 63, and will be immersed in the bristles of the sealing brush 632, forming a relatively stable sealing oil film, thereby forming a good sealing effect.

[0144] To improve the sealing effect, refer to Figure 7 In some embodiments, the sealing brush 632 includes at least two annular brushes, and the at least two annular brushes are arranged at intervals along the axial direction of the first sealing sleeve 63. Figure 7 Three annular brushes are arranged on the inner wall of the first sealing sleeve 63, and the intervals between two adjacent annular brushes of the three annular brushes can be equal, so that the sealing effect is more uniform in the circumferential direction.

[0145] Considering that the main engine 40 is relatively heavy, if the sealing brush 632 is directly pressed in the first sealing sleeve 63, the sealing brush 632 may be damaged or an effective sealing oil film may not be formed on the lower side of the main engine 40. Figure 7In some embodiments, the lower part of the inner wall of the first sealing sleeve 63 is provided with an arc-shaped support member 633, which extends circumferentially along the inner wall of the first sealing sleeve 63 and protrudes relative to the inner wall of the first sealing sleeve 63. In this way, the shield body 41, which also has an arc-shaped outer contour, is supported by the arc-shaped support member 633 to prevent the shield body 41 from directly pressing on the sealing brush 632, thereby causing damage to the sealing brush 632 or difficulty in forming a sealing oil film. At least part of the lower side of the sealing brush 632 can be fixed by the arc-shaped support member 633.

[0146] exist Figure 1 and Figure 7 In the embodiment, the first sealing sleeve 63 includes: a first sleeve section 63a and a second sleeve section 63b. One end of the first sleeve section 63a has an arcuate edge welded to the originating side opening 31, and the other end has a first flange. One end of the second sleeve section 63b has a second flange that can be connected to the first flange through a connecting piece. The connecting piece can be a bolt and nut structure, etc.

[0147] The first sealing sleeve 63 needs to be welded to the originating side hole 31 when in use. After the communication channel is formed, the first sealing sleeve 63 needs to be cut off from the originating side hole 31. During the cutting, more cutting amount of the first sealing sleeve 63 is often required. The number of times the overall first sealing sleeve 63 can be repeated during the welding and cutting process is relatively low. By making the first sealing sleeve 63 include the first sleeve section 63a and the second sleeve section 63b, when the first sealing sleeve 63 needs to be removed, the second sleeve section 63b can be removed from the first sleeve section 63a, and then the first sleeve section 63a can be cut off from the originating side hole 31. In this way, the second sleeve section 63b can be reused more times, thereby improving the utilization rate and reducing the cost.

[0148] Grouting holes and observation windows can also be provided on the first sealing sleeve 63. The grouting holes can be used to inject mud before the excavation main machine excavates to achieve pressure maintenance. The observation window can be a small door that can be opened and closed, which can be used to observe the filling situation and the position of the excavation main machine. A pressure sensor can also be provided in the first sealing sleeve 63 to detect the internal pressure.

[0149] Figure 8 and Fig. 9 The stress distribution diagrams of the main tunnel on the origin side when the back-pushing method and the reverse pulling method are used for simulation are shown respectively. Referring to the various embodiments of the aforementioned connecting channel excavation equipment, in order to facilitate understanding of the difference between the effect of the driving structure using the reverse pulling method (i.e., the reverse pulling method) on the main tunnel on the origin side and the effect of the back-pushing method on the main tunnel on the origin side in the related art, Figure 8 and Fig. 9 Provide a comparative description. Figure 8 and Fig. 9 The excavation force of the excavation equipment is the same.

[0150] exist Figure 8 In the figure, the magnitude of stress decreases from C1 to C12. The value of C1 is in the range of 1.363e-02 to 1.254e-02, and its color is darker. The value of C2 is in the range of 1.254e-02 to 1.145e-02, and its color is relatively lighter. The value range of C3 to C12 is Figure 8 The support mechanism that provides back thrust is located directly opposite the starting side opening. When the support mechanism provides back thrust to the tunneling equipment, the stress on the tunnel wall on that side is the largest at C1, and gradually changes to C2, C4, C5, etc. with this area as the center. In addition, on the tunnel wall below the starting side opening, the stress in this area is the largest at C1.

[0151] exist Fig. 9 In the figure, the magnitude of stress decreases from D1 to D12. The value of D1 is in the range of 1.097e-02 to 1.006e-02, and its color is darker. The value of D2 is in the range of 1.006e-02 to 9.160e-03, and its color is relatively lighter. The value range of D3 to D12 is Fig. 9 There is no need to set up a support mechanism to provide back thrust at the position opposite to the tunnel opening on the starting side. Therefore, when the tunnel opening side is subjected to tension, the stress of the tunnel wall on the opposite side of the tunnel opening is D3, and gradually changes to D4, D5, etc. with this area as the center toward the outer circle. In addition, the stress of the tunnel wall below the tunnel opening on the starting side is D1, and gradually changes to D2, D3 and D4 from this area outward.

[0152] Compared with the two, Figure 8 The corresponding main tunnel is subjected to the main structural stress mode under the back-push method, which is mainly the compression resistance on the inner side of the main tunnel, which is easy to cause large deformation on the arch side. Fig. 9 The corresponding main tunnel's structural stress mode under the counter-tension method is that the inner side of the main tunnel resists tension, and its arch side can withstand greater tension, thereby reducing the deformation of the main tunnel. Figure 8 and Fig. 9 In the Figure 8 The stress C1 on the inner side of the arch opposite to the opening is in the range of 1.363e-02 to 1.254e-02; Fig. 9 Zhongzai Figure 8 The stress D1 on the inner side of the arch opposite to the opening ranges from 1.097e-02 to 1.006e-02, which is lower than the value range of C1.

[0153] Fig.10 It is a structural schematic diagram of the stop-retreat mechanism in some embodiments of the connecting channel excavation equipment disclosed in the present invention. Fig.11 yes Fig.10Schematic diagram of the structure from another perspective. During the process of the tunneling mainframe 40 moving forward, the segments 33 are assembled into the connecting channel in sequence. When a new segment 33 is added, the soil pressure will form a tendency to push the segments 33 already placed in the connecting channel and the tunneling mainframe in the opposite direction. Fig.10 and Fig.11 In some embodiments, the communication channel excavation equipment may further include: a backstop mechanism 65. The backstop mechanism 65 is disposed on the first sealing sleeve 63 and is configured to limit the backstop of the excavation main machine 40 and the pipe segment 33 in the opposite direction of the excavation direction of the excavation main machine 40.

[0154] exist Fig.10 and Fig.11 In the embodiment, the stop mechanism 65 includes: a connecting plate 651 and a pin 652. The connecting plate 651 is fixedly connected to the outer wall of the first sealing sleeve 63, and has a protruding portion protruding relative to the wall edge of the first sealing sleeve 63 in the opposite direction of the excavation direction of the excavation main machine 40, and the protruding portion has a pin hole. The pin 652 is configured to pass through the pin hole and be inserted into the blind hole on the previous segment 33 when assembling the segment 33. In this way, the operator can insert the pin 652 into the pin hole and the blind hole when preparing to add the segment 33, and pull out the pin 652 after completing the addition of the segment 33.

[0155] For ease of use, the pin 652 may be connected to the connecting plate 651 or the outer wall of the first sealing sleeve 63 via a flexible connector 653. The flexible connector 653 may be a chain or a rope.

[0156] Fig.12 It is a schematic diagram of the structure of the first support and the second support in some embodiments of the connecting channel excavation equipment disclosed in the present invention. Fig.13 yes Fig.12 A schematic diagram of the structure from another perspective. Figure 4 , Figure 5 , Fig.12 and Fig.13 In some embodiments, the communication channel excavation equipment further includes: a first support trolley 60, a first support 641 and a second support 642. The first support trolley 60 can run in the starting side main tunnel 10. The first support 641 is arranged on the upper surface of the first support trolley 60, and is configured to support the first sealing sleeve 63. The second support 642 is arranged on the upper surface of the first support trolley 60, and is located on the side of the first support 641 away from the starting side opening 31, and is configured to support the excavation main machine 40.

[0157] exist Fig.13In the embodiment, the first support 641 which is wider in the left-right direction can support the first sealing sleeve 63 to ensure the stability of the first sealing sleeve 63 when the tunneling main machine 40 is working. The second support 642 which is wider in the left-right direction can support part of the shield body 41 of the tunneling main machine 40. The first support and the second support can also be used to adjust the position of the first sealing sleeve and the tunneling main machine relative to the starting side opening, so that they are aligned with the opening, so as to more conveniently realize the welding and cutting of the first sealing sleeve and facilitate the tunneling main machine to smoothly enter and exit the first sealing sleeve.

[0158] Fig.14 It is a schematic diagram of the structure of some embodiments of the connecting channel excavation equipment disclosed in the present invention in the main tunnel on the receiving side. Fig.15 It is a schematic structural diagram of a third support on a third supporting trolley in some embodiments of the connecting channel excavation equipment disclosed in the present invention. Fig.16 yes Fig.15 Schematic diagram of the structure from another perspective.

[0159] refer to Figure 1 , Fig.14 , Fig.15 and Fig.16 In some embodiments, the communication channel excavation equipment further includes: a third support trolley 80, a second sealing sleeve 81 and a third support 82. The third support trolley 80 is configured to run in the receiving-side main tunnel 20. The second sealing sleeve 81 is configured to be sealed and connected to the receiving-side opening 32 provided on the tunnel wall of the receiving-side main tunnel 20 adjacent to the communication channel 30. The third support 82 is provided on the upper surface of the third support trolley 80 and is configured to support the second sealing sleeve 81.

[0160] After the main boring machine 40 comes out of the receiving side opening 32, it enters the second sealing sleeve 81 prepared on the third supporting trolley 80 in the receiving side main tunnel 20. After the mud in the communication channel solidifies, the second sealing sleeve 81 can be removed from the receiving side opening 32, and at least part of the second sealing sleeve and the main boring machine 40 are transported away from the receiving side main tunnel 20.

[0161] refer to Figure 1 In some embodiments, the second sealing sleeve 81 includes: a third sleeve section 81a and a fourth sleeve section 81b. One end of the third sleeve section 81a has an arc-shaped edge welded to the receiving side hole 32, and the other end has a third flange. One end of the fourth sleeve section 81b has a fourth flange that can be connected to the third flange through a connecting piece. The connecting piece can be a bolt and nut structure, etc.

[0162] The second sealing sleeve 81 needs to be fixedly connected to the receiving side hole 32 (for example, by welding) when in use. After the mud in the communication channel solidifies, the second sealing sleeve 81 needs to be cut off from the receiving side hole 32. During the cutting, more cutting of the second sealing sleeve 81 is often required. The number of times the overall second sealing sleeve 81 can be repeated during welding and cutting is relatively low. By making the second sealing sleeve 81 include the third sleeve section 81a and the fourth sleeve section 81b, when the second sealing sleeve 81 needs to be removed, the fourth sleeve section 81b can be removed from the third sleeve section 81a, and then the third sleeve section 81a can be cut off from the receiving side hole 32. In this way, the fourth sleeve section 81b can be reused more times, thereby improving the utilization rate and reducing the cost.

[0163] In order to more conveniently remove the boring machine, refer to Fig.15 and Fig.16 In some embodiments, the third support 82 is movably disposed on the upper surface of the third support trolley 80, and an exit drive unit 83 is disposed between the third support 82 and the third support trolley 80, and the exit drive unit 83 is configured to drive the fourth sleeve section 81b and the internal excavation host 40 to leave the third sleeve section 81a. The exit drive unit 83 may include a hydraulic cylinder, and the movement of the fourth sleeve section 81b and the internal excavation host 40 relative to the third sleeve section 81a is achieved by the extension and contraction of the hydraulic cylinder.

[0164] exist Figure 1 In the embodiment, the third support trolley 80 may have a receiving side support mechanism 84, and the receiving side support mechanism 84 is configured to support the tunnel wall of the tunnel section corresponding to the receiving side opening 32 in the receiving side main tunnel 20 of the communication channel 30. Fig.14 In the embodiment, the third support trolley 80 may further include an electrical system 85 and a hydraulic system 86 .

[0165] exist Fig.16 In the embodiment, the exit driving unit 83 may further include a movable jack 831 for adjusting the posture of the third support 82 and locking the adjusted posture by a locking bolt 832 .

[0166] Fig.17 1 is a flow chart of some embodiments of the connecting channel construction method disclosed in the present invention. Based on the embodiments of the connecting channel excavation equipment described above, the present invention also provides a connecting channel construction method. Fig.17 In some embodiments, the construction method includes: steps S100 to S500.

[0167] In step S100, the tunneling main machine is transported to a position in the starting side main tunnel corresponding to the starting side opening of the communication channel. Specifically, step S100 may include: loading the tunneling main machine into a first sealing sleeve; transporting the tunneling main machine and the first sealing sleeve to a position in the starting side main tunnel corresponding to the starting side opening of the communication channel via a first supporting trolley; and sealingly connecting the first sealing sleeve to the starting side opening.

[0168] In step S200, the driving mechanism is connected to the tunnel wall of the originating main tunnel adjacent to the communication channel. Specifically, step S200 may include: fixing and connecting a fixing member at a position on the tunnel wall of the originating main tunnel adjacent to the communication channel, which is located at the periphery of the originating side opening of the communication channel; connecting one end of the driving element to the pushing member on the first supporting trolley, and the other end to the fixing member, so as to drive the pushing member away from or close to the originating side opening through the driving element.

[0169] In step S300, the soil of the communication channel is excavated by the main excavation machine. Before step S300, and after the first sealing sleeve is sealed and connected to the starting side opening, the construction method may further include: injecting sealing grease into the first sealing sleeve, injecting bentonite into the formed soil bin, and performing a pressure holding test.

[0170] In some embodiments, the construction method may further include: transporting the second sealing sleeve to a position of a receiving side opening corresponding to the communication channel in the receiving side main tunnel by a third supporting trolley; and sealingly connecting the second sealing sleeve to the receiving side opening.

[0171] Accordingly, before step S300, and after sealingly connecting the second sealing sleeve to the receiving side opening, the construction method may further include: injecting mud into the second sealing sleeve and performing a pressure test to ensure the stability of the stratum and the segments when the excavation main machine breaks through the opening segments of the receiving side main tunnel.

[0172] In step S400, during the excavation process of the excavation main machine, pipe segments are assembled on the rear side of the excavation main machine to support the soil, and a driving force is applied to the excavation main machine and the pipe segments through the driving mechanism to cause the excavation main machine to excavate toward the receiving side main tunnel.

[0173] In step S500, after the main boring machine is drilled out of the receiving side opening of the communication channel, the pipe segments in the communication channel are grouted behind the wall until the grout behind the wall solidifies. After the grout solidifies, the communication channel is formed. Next, the relevant equipment in the main tunnel on the originating side and the main tunnel on the receiving side can be withdrawn respectively.

[0174] In this specification, multiple embodiments are described in a progressive manner, and the focus of each embodiment is different, and the same or similar parts between the embodiments can be referred to each other. For the construction method embodiment, since its overall and the steps involved correspond to the contents in the system embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the system embodiment.

[0175] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0176] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A communication channel excavation device for excavating a communication channel (30) between a main tunnel (10) on the originating side and a main tunnel (20) on the receiving side, characterized in that: include: A tunneling main machine (40) comprises a shield body (41), a cutter head (42) arranged at the front end of the shield body (41), and a cutter head driving element (43) arranged in the shield body (41) for driving the cutter head (42); A first supporting trolley (60) is configured to run in the originating main tunnel (10); a guide mechanism (61); and A driving mechanism (50) is configured to be connected to a tunnel wall of the originating main tunnel (10) adjacent to the communication channel (30) and to apply a driving force to cause the excavation main machine (40) to excavate toward the receiving main tunnel (20); The driving mechanism (50) comprises a fixing member (51), a pushing member (52) and a driving element (53); the fixing member (51) is configured to be fixedly connected to a tunnel wall of the starting main tunnel (10) adjacent to the connecting channel (30) at a position on the periphery of the starting opening (31) of the connecting channel (30); the pushing member (52) has a supporting portion for supporting the tail of the excavation main machine (40) or a pipe segment (33) for lining the inner wall of the connecting channel (30); one end of the driving element (53) is connected to the tunnel wall of the starting main tunnel (10) and the driving element (53) is connected to the tunnel wall of the starting main tunnel (10). The pushing member (52) is connected to the fixing member (51) at one end, and the other end is connected to the fixing member (51). The driving element (53) is configured to pull the pushing member (52) toward the fixing member (51) so as to push the tunneling main machine (40) and the pipe segment (33) toward the receiving side main tunnel (20) through the supporting portion. The guiding mechanism (61) is arranged between the first supporting trolley (60) and the pushing member (52) and is configured to guide the movement of the pushing member (52). The guiding mechanism (61) includes: an anti-tilt guide structure (612), arranged on both sides of the pushing member (52), configured to maintain the angle of the pushing member (52) relative to the first supporting trolley (60) and to guide the movement of the pushing member (52); Wherein, the first supporting trolley (60) has a supporting column (62), and the anti-tilt guide structure (612) comprises: At least one pair of sliding parts (6121), each pair of sliding parts (6121) is respectively arranged on the side walls of both sides of the pushing member (52); and At least one pair of second guide rails (6122) is fixedly connected to the supporting column (62), and each pair of second guide rails (6122) is slidably matched with the at least one pair of sliding parts (6121) respectively.

2. The communication channel excavation equipment according to claim 1, characterized in that: The driving element (53) comprises: A plurality of hydraulic cylinders (531) are arranged at intervals along the circumference of the tunneling main machine (40).

3. The communication channel excavation equipment according to claim 2, characterized in that: The extension and retraction directions of the piston rods of the multiple hydraulic cylinders (531) are parallel to the movement direction of the pushing member (52).

4. The communication channel excavation equipment according to claim 1, characterized in that: The fixing member (51) comprises: The four connecting ear plates are located in the same plane as the connection point of the driving element (53), and are respectively located at the four corner points of a rectangle on the plane. The axis of the cutter head (42) of the boring machine (40) located in the communication channel (30) passes through the intersection of the two diagonals of the rectangle.

5. The communication channel excavation equipment according to claim 1, characterized in that: The guide mechanism (61) further comprises a support guide structure (611), which is arranged on the lower side or bottom of the pushing member (52) and is configured to support and guide the movement of the pushing member (52).

6. The communication channel excavation equipment according to claim 5, characterized in that: The support and guide structure (611) comprises: A first guide rail (6111) is arranged on the upper surface of the first supporting trolley (60); At least one pair of legs (6112), each pair of legs (6112) being respectively arranged on two side walls of the pushing member (52) adjacent to the bottom of the pushing member (52); and The roller (6113) is connected to the supporting leg (6112) and is rollably disposed on the first guide rail (6111).

7. The communication channel excavation equipment according to claim 6, characterized in that: The roller (6113) is a V-shaped track wheel, and the first guide rail (6111) is a triangular cross-section track that cooperates with the V-shaped track wheel.

8. The communication channel excavation equipment according to claim 2, characterized in that: At least some of the multiple hydraulic cylinders (531) have one end hinged to the fixing member (51) and can swing relative to the fixing member (51), and the other end is detachably connected to the pushing member (52).

9. The communication channel excavation equipment according to claim 8, characterized in that: The driving element (53) further comprises: The pull rod (532) is located on the upper side of the hydraulic cylinder (531), and one end of the pull rod is connected to the fixing member (51), and the other end of the pull rod is connected to the hydraulic cylinder (531), and is configured to support the hydraulic cylinder (531) when the hydraulic cylinder (531) swings relative to the fixing member (51).

10. The communication channel excavation equipment according to claim 1, characterized in that: Also includes: The first sealing sleeve (63) is configured to be sealed and connected to a starting-side opening (31) provided on a tunnel wall of the starting-side main tunnel (10) on a side adjacent to the communication channel (30).

11. The communication channel excavation equipment according to claim 10, characterized in that: Also includes: A first supporting trolley (60) is configured to run in the originating main tunnel (10); A first support (641), disposed on the upper surface of the first supporting trolley (60), and configured to support the first sealing sleeve (63); and The second support (642) is arranged on the upper surface of the first supporting trolley (60) and is located on the side of the first support (641) away from the starting side opening (31), and is configured to support the excavation main machine (40).

12. The communication channel excavation equipment according to claim 10, characterized in that: Also includes: The anti-retraction mechanism (65) is arranged on the first sealing sleeve (63) and is configured to limit the retreat of the tunneling main machine (40) and the pipe segment (33) in the direction opposite to the tunneling direction of the tunneling main machine (40).

13. The communication channel excavation equipment according to claim 12, characterized in that: The anti-retraction mechanism (65) comprises: a connecting plate (651) fixedly connected to the outer wall of the first sealing sleeve (63) and having a protruding portion protruding relative to the wall of the first sealing sleeve (63) in the opposite direction of the excavation direction of the excavation main machine (40), wherein the protruding portion has a pin hole; and The pin (652) is configured to pass through the pin hole and be inserted into the blind hole on the previous section of the pipe segment (33) when assembling the pipe segments (33).

14. The communication channel excavation equipment according to claim 13, characterized in that: The pin (652) is connected to the connecting plate (651) or the outer wall of the first sealing sleeve (63) via a flexible connecting piece (653).

15. The communication channel excavation equipment according to claim 10, characterized in that: The first sealing sleeve (63) has a grease injection hole (631) for injecting sealing grease, and the communication channel excavation equipment also includes: The sealing brush (632) is arranged on the inner wall of the first sealing sleeve (63) and is configured to be immersed in sealing grease to achieve a sealing effect.

16. The communication channel excavation equipment according to claim 15, characterized in that: The sealing brush (632) comprises at least two annular brushes, and the at least two annular brushes are arranged at intervals along the axial direction of the first sealing sleeve (63).

17. The communication channel excavation equipment according to claim 15, characterized in that: An arc-shaped support member (633) is provided at the lower portion of the inner wall of the first sealing sleeve (63). The arc-shaped support member (633) extends circumferentially along the inner wall of the first sealing sleeve (63) and protrudes relative to the inner wall of the first sealing sleeve (63).

18. The communication channel excavation equipment according to claim 10, characterized in that: The first sealing sleeve (63) comprises: A first sleeve section (63a), one end of which has an arc-shaped edge welded to the originating side hole (31), and the other end of which has a first flange; and The second sleeve section (63b) has a second flange at one end which can be connected to the first flange via a connecting piece.

19. The communication channel excavation equipment according to claim 1, characterized in that: Also includes: A first supporting trolley (60) connected to the driving mechanism (50) and configured to run in the starting main tunnel (10) and support the excavation main machine (40); and The second support trolley (70) is arranged on at least one side of the first support trolley (60) along the extension direction of the starting side main tunnel (10), and is configured to be provided with at least one of a segment crane, a starting side fluid system, a starting side hydraulic system and a starting side electrical system.

20. The communication channel excavation equipment according to claim 1, characterized in that: Also includes: A third supporting trolley (80) is configured to run in the receiving-side main tunnel (20); A second sealing sleeve (81) is configured to be sealed and connected to a receiving-side opening (32) provided on a tunnel wall of the receiving-side main tunnel (20) adjacent to the communication channel (30); and The third support (82) is arranged on the upper surface of the third supporting trolley (80) and is configured to support the second sealing sleeve (81).

21. The communication channel excavation equipment according to claim 20, characterized in that: The second sealing sleeve (81) comprises: A third sleeve section (81a), one end of which has an arc-shaped edge welded to the receiving side hole (32), and the other end of which has a third flange; and The fourth sleeve section (81b) has a fourth flange at one end which can be connected to the third flange via a connecting piece.

22. The communication channel excavation equipment according to claim 21, characterized in that: The third support (82) is movably arranged on the upper surface of the third support trolley (80), and an exit-hole driving unit (83) is provided between the third support (82) and the third support trolley (80). The exit-hole driving unit (83) is configured to drive the fourth sleeve section (81b) and the internal excavation main machine (40) to leave the third sleeve section (81a).

23. The communication channel excavation equipment according to claim 1, characterized in that: Also includes: The third supporting trolley (80) has a receiving side supporting mechanism (84), and the receiving side supporting mechanism (84) is configured to support the tunnel wall of the tunnel section of the receiving side main tunnel (20) corresponding to the receiving side opening (32) of the connecting channel (30).

24. A construction method based on the communication channel excavation equipment according to any one of claims 1 to 23, characterized in that: include: Transport the main boring machine to the position of the starting side opening corresponding to the connecting passage in the starting side main tunnel; Connecting the driving mechanism to the tunnel wall of the main tunnel on the originating side adjacent to the communication channel; Excavating the soil of the communication channel by using the excavation host; During the excavation process of the excavation main machine, segments are assembled at the rear side of the excavation main machine to support the soil, and a driving force is applied to the excavation main machine and the segments through the driving mechanism to cause the excavation main machine to excavate toward the receiving side main tunnel; After the main boring machine is drilled out of the receiving side opening of the communication channel, the pipe segments in the communication channel are subjected to back-wall grouting until the back-wall grout solidifies.

25. The construction method according to claim 24, characterized in that: The step of transporting the main boring machine to a position in the starting side main tunnel corresponding to the starting side opening of the communication channel comprises: Installing the excavation main machine into a first sealing sleeve; The excavation main machine and the first sealing sleeve are transported to a position corresponding to the starting side opening of the communication channel in the starting side main tunnel by a first supporting trolley; The first sealing sleeve is sealingly connected to the starting side hole.

26. The construction method according to claim 25, characterized in that: Also includes: After the first sealing sleeve is sealed and connected to the starting side opening and before the soil of the communication channel is excavated by the main boring machine, sealing grease is injected into the first sealing sleeve, mud is injected into the formed soil bin, and a pressure test is performed.

27. The construction method according to claim 24, characterized in that: The step of connecting the driving mechanism to the tunnel wall of the main tunnel on the originating side adjacent to the communication channel comprises: A connecting fixture is fixedly connected to a tunnel wall of the originating main tunnel adjacent to the communication channel at a position located on the periphery of the originating opening of the communication channel; One end of the driving element is connected to the pushing member on the first supporting trolley, and the other end is connected to the fixing member, so that the pushing member can be driven by the driving element to move away from or close to the starting side hole.

28. The construction method according to claim 24, characterized in that: Also includes: The second sealing sleeve is transported to a position of a receiving side opening corresponding to the communication channel in the receiving side main tunnel by a third supporting trolley; The second sealing sleeve is sealingly connected to the receiving side hole.

29. The construction method according to claim 28, characterized in that: Also includes: After the second sealing sleeve is sealed and connected to the receiving side opening and before the soil of the communication channel is excavated by the main boring machine, slurry is injected into the second sealing sleeve and a pressure test is performed.

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